Metal air suction hose suitable for casting and vacuumizing
By designing high-temperature and wear-resistant metal suction hoses, the problem of flammable and wearable rubber hoses in the casting V method is solved, and the higher airtightness and service life are achieved, and the dimensional precision and product quality of the castings are improved.
Patent Information
- Application Number
- CN202422277225.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In the existing casting V-process industry, rubber hoses are flammable and wearable, resulting in air leakage during vacuum extraction, affecting the dimensional accuracy of castings and product quality.
The metal suction hose consisting of characteristic sleeves, connecting accessories, characteristic braided mesh and characteristic corrugated pipe is designed to be high temperature resistant, wear-resistant, and flame-retardant. The inner holes are distributed in a conical shape to ensure airtightness.
It improves airtightness and service life, reduces material consumption, enhances casting dimensional precision and product quality, and reduces safety hazards.
Smart Images
Figure CN223063371U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of metal suction hoses, and relates to a metal suction hose suitable for the use of casting vacuum pumping. Background Technique
[0002] During the melting and pouring process in the V-method casting industry, the rubber hoses used are prone to burning due to the splashing of molten iron. Although the rubber hose burning can be extinguished and remedied in time, the service life of the rubber hose is greatly reduced in the later stage.
[0003] Due to the high frequency of plugging and unplugging at the orifice part of the rubber hose, damage and loss of elasticity occur during use, which causes air leakage in the vacuum negative pressure during the mold waiting process, and has a great impact on the product size accuracy. Summary of the Invention
[0004] The purpose of the utility model is to provide a metal suction hose with a certain flexibility, made of special materials, meeting the high-temperature resistance characteristics, having high wear resistance, good flame retardancy, excellent airtightness, and a long service life, so as to solve the problems raised in the above background technique.
[0005] The purpose of the utility model can be achieved by the following technical solutions: A metal suction hose suitable for the use of casting vacuum pumping includes two special sleeves, two connecting accessories, a special braided mesh, and a special corrugated pipe. The inner wall surface of the special braided mesh is connected to the special corrugated pipe. The two ends of the special braided mesh are respectively connected to the two connecting accessories. The two connecting accessories are respectively connected to the two special sleeves. The inner hole channels of the two special sleeves are both distributed in a conical shape.
[0006] In the above-mentioned metal suction hose suitable for the use of casting vacuum pumping, the opening diameter of the head end of the special sleeve is larger than the opening diameter of the tail end of the special sleeve.
[0007] In the above-mentioned metal suction hose suitable for the use of casting vacuum pumping, a sealing and fitting surface is provided at the inner hole channel of the special sleeve.
[0008] In the above-mentioned metal suction hose suitable for the use of casting vacuum pumping, the special braided mesh can withstand high-temperature molten iron at a temperature of 1200 - 1450 °C.
[0009] Compared with the prior art, the advantages of the metal suction hose suitable for the use of casting vacuum pumping of the utility model are as follows: The metal suction hose of the utility model effectively achieves the characteristics of reducing material consumption, high-temperature resistance, wear resistance, good flame retardancy, excellent airtightness, and a long service life, thereby improving the hardness of the mold waiting for sand, and further improving the dimensional precision and product quality of the casting. Brief Description of the Drawings
[0010] Figure 1 This is a schematic structural view of a metal suction hose for casting vacuum applications according to the present utility model.
[0011] Figure 2 This is a schematic structural view of a special sleeve of a metal suction hose for casting vacuum applications according to the present utility model.
[0012] In the figure, 1 is a special sleeve; 2 is a connecting accessory; 3 is a special braided mesh; 4 is a special corrugated pipe. Detailed implementation mode
[0013] The following are specific embodiments of the present utility model and, in conjunction with the accompanying drawings, further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.
[0014] As Figure 1 and Figure 2 shown, a metal suction hose for casting vacuum applications according to the present utility model includes two special sleeves 1, two connecting accessories 2, a special braided mesh 3, and a special corrugated pipe 4. The inner wall surface of the special braided mesh 3 is connected to the special corrugated pipe 4, and both ends of the special braided mesh 3 are respectively connected to the two connecting accessories 2. The two connecting accessories 2 are respectively connected to the two special sleeves 1, and the inner hole channels of the two special sleeves 1 are both in a tapered distribution.
[0015] During use: When the product to be molded is connected to a vacuum pump for negative pressure evacuation, the vacuum pump evacuates air. The suction port of the metal suction hose contacts the suction port of the sand box. The suction port of the sand box made in a specific shape forms a tight fit with the special sleeve. Gas is transmitted through the cavity pipeline composed of the special corrugated pipe and the special braided mesh, and then the suction port of the vacuum negative pressure pipeline made in a specific shape forms a tight fit with the special sleeve. A sealed space is formed to prevent the process gas from leaking.
[0016] When splashing occurs during the pouring process, the special braided mesh can effectively prevent high-temperature molten iron (1200 - 1450 °C) from splashing onto the surface of the metal suction hose even if the molten iron splashes. The residual molten iron on the surface can only form an attachment, avoiding the phenomenon of combustion and reducing the safety hazards in the production process.
[0017] The structure of this technical solution can effectively improve wear resistance, flame retardancy, airtightness, and service life, achieve the purpose of reducing material consumption and increasing the hardness of the sand mold, and further improve the quality of the cast product.
[0018] The shape and size of the metal suction hose can be adjusted according to the actual situation for the sizes of each unit (1, special sleeve 2, connecting accessory 3, special braided mesh 4, special corrugated pipe), but the internal structure and principle remain unchanged.
[0019] This technical solution can effectively achieve the characteristics of reducing material consumption, high temperature resistance, wear resistance, good flame retardancy, excellent airtightness, and long service life, thereby achieving the purpose of increasing the hardness of the mold sand mold, and further improving the dimensional precision of the casting and the product quality.
[0020] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.
Claims
1. A metal suction hose suitable for the use of casting vacuum pumping, comprising two special sleeves (1), two connecting accessories (2), a special braided mesh (3) and a special corrugated pipe (4), characterized in that, The inner wall surface of the special woven net (3) is connected to the special corrugated pipe (4). The two ends of the special woven net (3) are respectively connected to two connecting accessories (2), and the two connecting accessories (2) are respectively connected to two special sleeves (1). The inner hole channels of the two special sleeves (1) are both distributed in a conical shape.
2. The metal suction hose applicable to the use of casting vacuum extraction according to claim 1, characterized in that The opening diameter of the head end of the special sleeve (1) is larger than the opening diameter of the tail end of the special sleeve (1).
3. The metal suction hose applicable to the use of casting vacuum extraction according to claim 1, wherein A sealing and fitting surface is provided at the inner hole channel of the special sleeve (1).
4. A metal suction hose suitable for casting vacuum applications according to claim 1, characterized in that, The special woven net (3) can withstand the temperature of high-temperature molten iron at 1200 - 1450 °C.