Safe pressure relief control mechanism
By installing a safety pressure relief control mechanism on the molten iron casting machine, using cylinders and air pumps to drive the outer frame to rotate, combined with pressure sensors and knob control, the problem of unstable pressure relief under high temperature and high pressure is solved, thus achieving equipment stability and ease of operation.
Patent Information
- Application Number
- CN202520071410.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-13
AI Technical Summary
When existing molten iron casting machines operate under high temperature and high pressure, they lack effective pressure relief devices, which may cause the equipment to be subjected to excessive pressure or vibration during reset, resulting in equipment damage or operational difficulties.
The system employs a safe pressure relief control mechanism, which includes a platform, outer frame, cylinder, air pump, and control components. The cylinder drives the outer frame to rotate, and the air pump and control components achieve uniform pressure relief. Combined with pressure sensors and knobs to control the gas flow path, the system ensures equipment stability.
By controlling the pressure release at a constant speed, vibration during equipment reset is reduced, equipment stability is improved, equipment damage is prevented, and the operation process is simplified.
Smart Images
Figure CN223833441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal casting technology, specifically to a safety pressure relief control mechanism. Background Technology
[0002] A casting machine is a specialized piece of equipment used to inject molten metal, plastic or other materials into a mold to manufacture a product.
[0003] Existing molten iron casting machines are equipped with a pouring spout. The molten iron stored in the casting cylinder is poured slowly into the mold through the pouring spout. Current technology usually uses a funnel to assist the container in aligning with the casting spout of the mold, which can effectively improve the convenience of casting.
[0004] In traditional casting equipment, the casting cylinder may operate under high temperature or high pressure. Especially when pouring molten iron, the pressure of the casting cylinder changes greatly. Without a suitable pressure relief device, the equipment may be subjected to excessive pressure or vibration when returning to the initial position, which may lead to equipment damage or operational difficulties. Utility Model Content
[0005] The purpose of this utility model is to solve the problems in the prior art by proposing a safe pressure relief control mechanism.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a safety pressure relief control mechanism, including a platform, an outer frame rotatably mounted on the platform, a pouring cylinder mounted on the outer frame, the outer frame being driven to rotate by a cylinder rotatably mounted on the platform, an air pump being mounted on the platform, and a control component that drives the cylinder to rotate the outer frame at a uniform speed through the air pump, wherein the cylinder is tilted so that one end faces the pouring port of the pouring cylinder.
[0007] The present invention is further configured such that: two air inlets are provided on the cylinder body of the cylinder; the control component includes a reversing valve, a proportional valve and a control unit, all fixedly mounted on the platform; the air pump is connected to the two air inlets of the cylinder in sequence through the proportional valve and the reversing valve; and the control unit is electrically connected to both the proportional valve and the reversing valve.
[0008] The present invention is further configured such that: the control unit is provided with a knob for adjusting the magnitude of the electrical signal output from the control unit to the proportional valve, and the knob outputs an electrical signal to change the gas flow path in the reversing valve when rotated in both directions.
[0009] The present invention is further configured such that: a dead zone is provided at the middle position of the rotation angle of the knob, which prevents the control unit from outputting any electrical signal.
[0010] The present invention is further configured such that: a pressure sensor is installed inside the proportional valve, so that the control unit adjusts the electrical signal output to the proportional valve according to the pressure change of the gas discharged into the cylinder by the proportional valve.
[0011] The present invention is further configured such that: the rotation axis of the outer frame and the platform is located at the lower end of the pouring port opened on the pouring cylinder, and the output end of the cylinder is rotatably connected to the outer frame.
[0012] In summary, this utility model has the following beneficial effects: by setting up a control component, the air pump can drive the outer frame to rotate at a uniform speed, thereby achieving effective pressure relief of the pouring cylinder and improving the stability of the equipment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0014] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0015] Figure 3 for Figure 1 Enlarged view of point A in the middle.
[0016] In the diagram: 1. Platform; 2. Outer frame; 3. Pouring cylinder; 4. Cylinder; 5. Air pump; 6. Reversing valve; 7. Proportional valve; 8. Control unit; 9. Knob. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] Safety pressure relief control mechanism, such as Figures 1 to 3As shown, the system includes a platform 1, an outer frame 2 rotatably mounted on the platform 1, a pouring cylinder 3 mounted on the outer frame 2, and the outer frame 2 being driven to rotate by a cylinder 4 rotatably mounted on the platform 1. An air pump 5 is mounted on the platform 1, and a control assembly is connected to the air pump 5 to drive the cylinder 4 to rotate the outer frame 2 at a uniform speed. To maximize the pressure relief effect of the cylinder 4, the rotation axis of the outer frame 2 and the platform 1 is positioned at the lower end of the pouring opening on the pouring cylinder 3. The output end of the cylinder 4 is rotatably connected to the outer frame 2. The cylinder 4 is tilted so that one end faces the pouring opening of the pouring cylinder 3. The cylinder 4 has two air inlets. The control assembly includes a reversing valve 6, a proportional valve 7, and a control unit 8, all fixedly mounted on the platform 1. The air pump 5 is connected to the two air inlets of the cylinder 4 sequentially through the proportional valve 7 and the reversing valve 6. The control unit 8 is electrically connected to both the proportional valve 7 and the reversing valve 6.
[0019] Beneficial effects: By setting up the control components, the air pump 5 can drive the outer frame 2 to rotate at a uniform speed, thereby effectively relieving the pressure on the pouring cylinder 3 and improving the stability of the equipment.
[0020] like Figure 3 As shown, the proportional valve 7 stabilizes the gas flow rate from the air pump 5 into the cylinder 4, thereby reducing vibration caused by excessive pressure during equipment reset. The proportional valve 7 is simple and convenient to use. However, due to the large variation in the total mass of the pouring cylinder 3 and the large range of load variation in the cylinder 4, a pressure sensor is installed inside the proportional valve 7 to enable it to quickly adapt to the pressure changes applied to the cylinder 4 by the pouring cylinder 3. This allows the control unit 8 to adjust the electrical signal output to the proportional valve 7 based on the pressure change of the gas discharged into the cylinder 4 by the proportional valve 7.
[0021] like Figure 3 As shown, in order to make the operation of the proportional valve 7 and the reversing valve 6 more convenient, the control unit 8 is provided with a knob 9 for adjusting the magnitude of the electrical signal output from the control unit 8 to the proportional valve 7. When the knob 9 is rotated in both directions, it outputs an electrical signal to change the gas flow path in the reversing valve 6. That is, the two directions of the knob 9 correspond to the extension or retraction of the cylinder 4, respectively. Increasing the rotation angle of the knob 9 can increase the operating speed of the cylinder 4. In order to integrate the operation of the cylinder 4 into a single knob 9, a dead zone is provided at the middle position of the rotation angle of the knob 9, which prevents the control unit 8 from outputting any electrical signal.
[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A safety pressure relief control mechanism, comprising a platform, an outer frame rotatably mounted on the platform, and a casting cylinder mounted on the outer frame, characterized in that: The outer frame is driven to rotate by a cylinder rotatably mounted on a platform. The platform is equipped with an air pump and a control component that drives the cylinder to rotate the outer frame at a uniform speed through the air pump. The cylinder is tilted so that one end faces the pouring port of the casting cylinder.
2. The safety pressure relief control mechanism according to claim 1, characterized in that: The cylinder body has two air inlets. The control component includes a reversing valve, a proportional valve, and a control unit, all fixedly mounted on the platform. The air pump is connected to the two air inlets of the cylinder in sequence through the proportional valve and the reversing valve. The control unit is electrically connected to both the proportional valve and the reversing valve.
3. The safety pressure relief control mechanism according to claim 2, characterized in that: The control unit is equipped with a knob that adjusts the magnitude of the electrical signal output from the control unit to the proportional valve. When the knob is rotated in either direction, it outputs an electrical signal that changes the gas flow path within the reversing valve.
4. The safety pressure relief control mechanism according to claim 3, characterized in that: The knob is positioned at a dead zone at its midpoint of rotation angle, preventing the control unit from outputting any electrical signals.
5. The safety pressure relief control mechanism according to claim 3, characterized in that: A pressure sensor is installed inside the proportional valve so that the control unit can adjust the electrical signal output to the proportional valve according to the pressure change of the gas discharged into the cylinder by the proportional valve.
6. The safety pressure relief control mechanism according to claim 1, characterized in that: The rotation axis of the outer frame and the platform is located at the lower end of the pouring port opened on the pouring cylinder, and the output end of the cylinder is rotatably connected to the outer frame.