Silicon nitride ceramic lining elbow

Abstract

The utility model discloses a silicon nitride ceramic lining elbow which comprises an elbow body, a silicon nitride ceramic inner pipe is fixedly embedded in the inner wall of the elbow body, two blocking rings are fixedly connected to the inner wall of the elbow body, and the two ends of the silicon nitride ceramic inner pipe are fixedly connected with the side faces, close to the silicon nitride ceramic inner pipe, of the two blocking rings respectively. Three annular limiting grooves are formed in the inner wall of the bent pipe body, and the inner wall of each annular limiting groove is fixedly connected with a positioning ring. According to the device, through the arrangement of the bent pipe body, the silicon nitride ceramic inner pipe, the annular limiting groove, the positioning ring and the plugging ring, the silicon nitride ceramic inner pipe can be effectively fixed and limited, the silicon nitride ceramic inner pipe is more stably installed in the bent pipe body, stable use of the elbow is facilitated, and through the cooperation of the arranged material guiding slope plate and the plugging ring, the material guiding slope plate is more stable. And the end of the silicon nitride ceramic inner pipe can be protected, the impact force borne by the silicon nitride ceramic inner pipe is reduced, and the elbow can be stably used for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a silicon nitride ceramic lined elbow. Background Art

[0002] Concrete pump truck pipelines are subject to erosion by concrete mixture during long-term use, especially the pipe connection elbows, which generate centrifugal force due to the change in the movement direction of the concrete mixture. The impact abrasion on the outer diameter of the elbows is the most serious, and may even be worn through. The wear rate of the elbows is several times higher than that of the straight pipes. Some of the existing concrete pump truck pipeline elbows increase the metal thickness of the inner wall of the pipeline, while others use wear-resistant alloy materials to extend the service life, but the cost is high and the effect is not ideal.

[0003] Currently, the use of patch silicon nitride ceramic lining can solve the wear resistance problem, but the patch is easy to fall off. Once it falls off, it will cause the nearby silicon nitride ceramic pieces to fall off as well. In addition, the silicon nitride ceramic lining cannot be used for auxiliary protection during use, thus affecting the service life of the pipe elbow. For this reason, we propose a silicon nitride ceramic lined elbow to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a silicon nitride ceramic lined elbow to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A silicon nitride ceramic lined elbow comprises a bend body, the inner wall of which is fixedly inlaid with a silicon nitride ceramic inner tube, the inner wall of which is fixedly connected to two sealing rings, the two ends of the silicon nitride ceramic inner tube being respectively fixedly connected to a side surface of the two sealing rings close to the silicon nitride ceramic inner tube, the inner wall of the bend body being provided with three annular limiting grooves, the inner wall of each annular limiting groove being fixedly connected to a positioning ring, and the inner wall of each positioning ring being fixedly connected to the outer surface of the silicon nitride ceramic inner tube.

[0007] In a further embodiment, two material guide ramps are fixedly connected to the inner wall of the curved pipe body, and each of the material guide ramps is fixedly connected to a side of the sealing ring away from the silicon nitride ceramic inner tube at one end thereof.

[0008] In a further embodiment, the right end of the elbow body and the bottom end of the elbow body are fixedly connected with a connecting flange, and a side surface of each connecting flange away from the elbow body is provided with a group of mounting holes.

[0009] In a further embodiment, a sealing groove is formed on a side of each connecting flange away from the elbow body, and a sealing gasket is clamped on the inner wall of each sealing groove.

[0010] In a further embodiment, two handles are fixedly connected to the outer surface of the elbow body, and the handles are made of stainless steel.

[0011] In a further embodiment, a model mark is fixedly connected to the upper surface of the elbow body, and the model mark is located in the middle of the elbow body.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This device can effectively fix and limit the silicon nitride ceramic inner tube through the arrangement of the elbow body, silicon nitride ceramic inner tube, annular limiting groove, positioning ring and sealing ring, so that the silicon nitride ceramic inner tube can be more firmly installed inside the elbow body, which is convenient for the stable use of the elbow. In addition, through the cooperation of the provided material guide ramp and the sealing ring, the end of the silicon nitride ceramic inner tube can be protected and the impact force on the silicon nitride ceramic inner tube can be reduced, which is convenient for the stable and long-term use of the elbow. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the silicon nitride ceramic lined elbow.

[0015] Figure 2 A side view of the elbow body in a silicon nitride ceramic lined elbow.

[0016] Figure 3 This is a bottom view of the elbow body in the silicon nitride ceramic lined elbow.

[0017] Figure 4 Schematic diagram of the internal anatomical structure of the elbow body in the silicon nitride ceramic lined elbow.

[0018] In the figure: 1. Bend pipe body; 2. Handle; 3. Model mark; 4. Connecting flange; 5. Mounting hole; 6. Material guide ramp; 7. Sealing gasket; 8. Sealing groove; 9. Silicon nitride ceramic inner tube; 10. Positioning ring; 11. Annular limit groove; 12. Blocking ring. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 In the utility model, a silicon nitride ceramic lined elbow comprises an elbow body 1, the inner wall of the elbow body 1 is fixedly inlaid with a silicon nitride ceramic inner tube 9, the inner wall of the elbow body 1 is fixedly connected to two sealing rings 12, the two ends of the silicon nitride ceramic inner tube 9 are respectively fixedly connected to the two sealing rings 12 on one side close to the silicon nitride ceramic inner tube 9, the inner wall of the elbow body 1 is provided with three annular limiting grooves 11, the inner wall of each annular limiting groove 11 is fixedly connected to a positioning ring 10, and the inner wall of each positioning ring 10 is fixedly connected to the outer surface of the silicon nitride ceramic inner tube 9.

[0023] Two material guide ramps 6 are fixedly connected to the inner wall of the elbow body 1, and one end of each material guide ramp 6 close to the silicon nitride ceramic inner tube 9 is fixedly connected to the side of the sealing ring 12 away from the silicon nitride ceramic inner tube 9. The material guide ramp 6 can be used to guide the conveyed material, reduce the impact force on the silicon nitride ceramic inner tube 9, and achieve stable use of this elbow. The right end of the elbow body 1 and the bottom end of the elbow body 1 are fixedly connected with a connecting flange 4, and each connecting flange 4 is provided with a group of mounting holes 5 on the side away from the elbow body 1. The connecting flange 4 and the mounting holes 5 facilitate the installation and connection of the elbow body 1 and the material conveying pipe. Each connecting flange 4 is provided with a sealing groove 8 on the side away from the elbow body 1, and the inner wall of each sealing groove 8 is clamped with a sealing gasket 7. The sealing gasket 7 can increase the sealing effect of the elbow body 1 when connected to avoid material leakage.

[0024] Two handles 2 are fixedly connected to the outer surface of the elbow body 1. The handles 2 are made of stainless steel, which enables the installer to easily pick up the elbow body 1 and facilitate the installation of this elbow. The upper surface of the elbow body 1 is fixedly connected with a model mark 3, which is located in the middle of the elbow body 1, which enables the installer to more conveniently understand this elbow and facilitate the use of this elbow.

[0025] The working principle of this utility model is:

[0026] During use, first fix the silicon nitride ceramic inner tube 9 into the interior of the elbow body 1, and install the sealing ring 12 and the material guide ramp 6 at the end of the silicon nitride ceramic inner tube 9. Then, hold the handle 2 to pick up the elbow body 1, and connect the elbow body 1 to the concrete pump truck feed pipe through the connecting flange 4 and the mounting hole 5. During use, when the material flows through the elbow, the material guide ramp 6 is used to guide the conveyed material, and the sealing ring 12 is used to protect the silicon nitride ceramic inner tube 9, thereby reducing the impact force on the silicon nitride ceramic inner tube 9 when the material flows, thereby realizing the safe and stable conveying of the conveyed material by the elbow body 1.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A silicon nitride ceramic lined elbow, characterized by: The invention comprises a bend pipe body (1), the inner wall of which is fixedly inlaid with a silicon nitride ceramic inner tube (9), the inner wall of which is fixedly connected to two sealing rings (12), the two ends of the silicon nitride ceramic inner tube (9) are respectively fixedly connected to the side of the two sealing rings (12) close to the silicon nitride ceramic inner tube (9), the inner wall of the bend pipe body (1) is provided with three annular limiting grooves (11), the inner wall of each annular limiting groove (11) is fixedly connected to a positioning ring (10), and the inner wall of each positioning ring (10) is fixedly connected to the outer surface of the silicon nitride ceramic inner tube (9).

2. The silicon nitride ceramic lined elbow according to claim 1, characterized in that: Two material guide ramps (6) are fixedly connected to the inner wall of the elbow body (1), and one end of each material guide ramp (6) close to the silicon nitride ceramic inner tube (9) is fixedly connected to a side of the sealing ring (12) away from the silicon nitride ceramic inner tube (9).

3. The silicon nitride ceramic lined elbow according to claim 1, characterized in that: The right end of the elbow body (1) and the bottom end of the elbow body (1) are both fixedly connected with a connecting flange (4), and a group of mounting holes (5) are opened on a side of each connecting flange (4) away from the elbow body (1).

4. The silicon nitride ceramic lined elbow according to claim 3, characterized in that: A sealing groove (8) is provided on a side of each connecting flange (4) away from the elbow body (1), and a sealing gasket (7) is clamped on the inner wall of each sealing groove (8).

5. The silicon nitride ceramic lined elbow according to claim 1, characterized in that: Two gripping handles (2) are fixedly connected to the outer surface of the elbow body (1), and the gripping handles (2) are made of stainless steel.

6. The silicon nitride ceramic lined elbow according to claim 1, characterized in that: A model mark (3) is fixedly connected to the upper surface of the elbow body (1), and the model mark (3) is located in the middle of the elbow body (1).

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