Tool for solving run-out of small-caliber high-pressure flowmeter products
By setting limiting components at both ends of the mold shell of the small-diameter high-pressure flow meter and using screws and nuts to fix the positioning ring, the problem of fire leakage in investment casting is solved, thereby improving product quality and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN HAOSEN PRECISION CASTING
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-15
AI Technical Summary
Small-diameter high-pressure flow meters often suffer from arcing defects in the triangular prism section during investment casting, which cannot be effectively resolved by existing methods, resulting in substandard product quality.
The system employs a limiting component structure that includes a positioning ring and a connecting rod. It is fixed to both ends of the high-pressure flow meter mold shell by screws and nuts, ensuring that the positioning ring fits tightly against the inner hole, preventing the mold shell from cracking and avoiding sparking.
It effectively prevents mold shell cracking, improves product qualification rate and quality, simplifies processes, reduces costs, and enhances market competitiveness.
Smart Images
Figure CN224239393U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling technology, specifically to tooling for solving the problem of fire escaping in small-diameter high-pressure flow meter products. Background Technology
[0002] In the investment casting industry, small-diameter high-pressure flow meters are common and produced in large quantities. Their depth-to-diameter ratio exceeds 5, and they often contain a triangular prism in the center. The mold shell is typically made from zircon sand / zircon powder and mullite sand / mullite powder used in conventional investment casting.
[0003] Existing methods often result in arcing defects in the triangular prism section after smelting and casting, making product delivery unreliable. Current solutions typically address this by increasing the number of coating layers or injecting refractory slurry into the inner prism. However, for small-diameter flow meters, the limited inner space restricts the number of coating layers. While injecting refractory slurry into the inner hole can mitigate arcing to some extent, it compromises mold permeability, often leading to shrinkage defects after casting. Therefore, this patent proposes a tooling solution to address arcing issues in small-diameter high-pressure flow meters. Utility Model Content
[0004] The purpose of this invention is to provide a tooling solution for the fire escaping of small-diameter high-pressure flowmeters, thereby addressing the problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a tooling for preventing fire in small-diameter high-pressure flowmeters, comprising a high-pressure flowmeter mold shell and two limiting components. The two limiting components are located at both ends of the high-pressure flowmeter mold shell, and each limiting component includes a positioning ring and two connecting rods. The two connecting rods are fixed on both sides of the positioning ring, and a connection port is provided on the connecting rod. A first screw is inserted into the connection port between the two limiting components. A limiting block is fixed at one end of the first screw, and a nut is screwed onto the outer wall of the other end of the first screw.
[0006] Preferably, the positioning ring is collinear with the center of the inner hole of the high-pressure flow meter mold shell.
[0007] Preferably, a throttle is fixed to the outer wall of the nut.
[0008] Preferably, the limiting member is equipped with a positioning member, which includes a mounting plate, a plug, a connecting shell, a turntable, a slider, a limiting rod, a second screw, and a fixing rod.
[0009] Preferably, the mounting plate is fixed to the end of the connecting rod away from the high-pressure flow meter mold shell, the plug is fixed to the end of the mounting plate near the high-pressure flow meter mold shell, the connecting shell is fixed to the end of the plug, the turntable is rotatably connected to the end of the plug, one end of the turntable has multiple sliding ports, the slider is slidably connected in the sliding ports, the limiting rod is rotatably connected to the end of the slider, the outer wall of the connecting shell has limiting ports corresponding to the limiting rods, the limiting rods slide in the limiting ports, the second screw is screwed into the plug, the fixing rod is fixed to the end of the second screw near the connecting shell, the outer wall of the fixing rod has a limiting groove, and the inner wall of the turntable is adapted to the limiting groove and the fixing rod.
[0010] Preferably, one end of the plug is fixed with a limiting shell, and the turntable is located inside the limiting shell.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] By placing two limiting components at both ends of the high-pressure flow meter mold shell, and then inserting the first screw into the connection port of one limiting component and the connection port of the other limiting component, and screwing a nut onto the outer wall of the first screw, the two connecting rods limit the two ends of the high-pressure flow meter mold shell. The positioning ring is aligned with the inner hole and tightly fits against the inner hole of the high-pressure flow meter mold shell. After reinforcement, it ensures that the mold shell will not crack after casting, thus preventing spark leakage. This tooling achieves a simple, efficient, and economical improvement result, not only effectively reducing spark leakage and significantly improving the product qualification rate to meet delivery requirements, but also ultimately improving product quality and market competitiveness. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the tooling structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the structure of this utility model after removing the high-pressure flow meter mold shell;
[0016] Figure 4 This is a schematic diagram of the positioning component structure of this utility model;
[0017] Figure 5 This is a schematic diagram of the structure of this utility model after the connecting shell is removed.
[0018] In the diagram: 1. High-pressure flow meter housing; 2. Positioning ring; 3. Connecting rod; 4. Connecting port; 5. First screw; 6. Nut; 7. Rotary handle; 8. Limiting block; 9. Mounting plate; 10. Insert; 11. Connecting shell; 12. Second screw; 13. Turntable; 14. Sliding port; 15. Fixing rod; 16. Limiting groove; 17. Limiting rod; 18. Slider; 19. Limiting shell. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] In the investment casting industry, small-diameter high-pressure flow meters are common and produced in large quantities. Their hole depth to diameter ratio exceeds 5, and they often contain a triangular prism in the center. Conventional investment casting uses zircon sand / zircon powder and mullite sand / mullite powder to make the mold shell. This invention provides a tooling solution to prevent sparking in small-diameter high-pressure flow meters. This solution involves placing two limiting components at both ends of the high-pressure flow meter mold shell 1. Then, a first screw 5 is inserted into the connection port 4 within one limiting component and the connection port 4 within the other limiting component. A nut 6 is screwed onto the outer wall of the first screw 5, thus limiting the two connecting rods 3 at both ends of the high-pressure flow meter mold shell 1. The positioning ring 2 is aligned with the inner hole, tightly fitting against the outer mold shell of the high-pressure flow meter mold shell 1. This reinforcement ensures that the mold shell does not crack after casting, preventing sparking. This tooling achieves a simple, efficient, and economical improvement, effectively reducing sparking, significantly increasing product qualification rate, meeting delivery requirements, and ultimately enhancing product quality and market competitiveness.
[0021] Example 1:
[0022] like Figures 1-3 As shown, this utility model provides a technical solution: a tooling solution for preventing fires in small-diameter high-pressure flowmeters, including a high-pressure flowmeter mold shell 1 and two limiting components. The two limiting components are located at both ends of the high-pressure flowmeter mold shell 1, and each limiting component includes a positioning ring 2 and two connecting rods 3. The two connecting rods 3 are fixed to both sides of the positioning ring 2, and each connecting rod 3 has a connection port 4. A first screw 5 is inserted into the connection port 4 between the two limiting components. A limiting block 8 is fixed to one end of the first screw 5, and a nut 6 is screwed onto the outer wall of the other end of the first screw 5. The positioning ring 2 is collinear with the center of the inner hole of the high-pressure flowmeter mold shell 1. A handle 7 is fixed to the outer wall of the nut 6, which facilitates the rotation of the nut 6.
[0023] It is important to note that by placing two limiting components at both ends of the high-pressure flow meter mold shell 1, and then inserting the first screw 5 into the connection port 4 inside one of the limiting components and the connection port 4 inside the other limiting component, and screwing the nut 6 onto the outer wall of the first screw 5, the two connecting rods 3 limit the two ends of the high-pressure flow meter mold shell 1. The positioning ring 2 is directly opposite the inner hole, tightly attached to the outer mold shell of the high-pressure flow meter mold shell 1, and reinforced to ensure that the mold shell does not crack after casting, thus preventing sparking. This tooling achieves a simple, efficient, and economical improvement, effectively reducing sparking, significantly improving product qualification rate, meeting delivery requirements, and ultimately enhancing product quality and market competitiveness. After baking and before casting, this tooling is used to tighten the inner hole and reverse direction of the mold shell. After casting and cooling of the molten steel, the tooling can be removed. Before reuse, the tooling needs to be water-cooled for easy operation.
[0024] Example 2:
[0025] like Figures 1-5 As shown, a positioning component is installed on the limiting component. The positioning component includes a mounting plate 9, a plug 10, a connecting shell 11, a turntable 13, a slider 18, a limiting rod 17, a second screw 12, and a fixing rod 15. Mounting plate 9 is fixed to the end of connecting rod 3 away from high-pressure flowmeter mold housing 1. Insert 10 is fixed to the end of mounting plate 9 near high-pressure flowmeter mold housing 1. Connecting housing 11 is fixed to one end of insert 10. Turntable 13 is rotatably connected to one end of insert 10. One end of turntable 13 has multiple sliding ports 14. Slider 18 is slidably connected in the sliding ports 14. Limiting rod 17 is rotatably connected to one end of slider 18. The outer wall of connecting housing 11 has limiting openings corresponding to limiting rods 17. Limiting rods 17 slide in the limiting openings. Second screw 12 is screwed into insert 10. Fixing rod 15 is fixed to the end of second screw 12 near connecting housing 11. The outer wall of fixing rod 15 has a limiting groove 16. The inner wall of turntable 13 is adapted to the limiting groove 16 and fixing rod 15. One end of insert 10 is fixed with limiting housing 19, and turntable 13 is located inside limiting housing 19.
[0026] It should be noted that by rotating the second screw 12, the second screw 12 drives the fixed rod 15 to rotate and move forward, thereby causing the turntable 13 to rotate. The rotation of the turntable 13 drives the slider 18 to move within the sliding opening 14, thereby driving the limiting rod 17 to move. The moving limiting rod 17 contacts the inner hole of the high-pressure flow meter mold shell 1 to achieve center positioning, which facilitates the installation of the limiting component. In addition, the turntable 13 is restricted by the limiting groove 16 and can only rotate with the fixed rod 15. The turntable 13 is restricted by the limiting shell 19 and cannot move with the fixed rod 15.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.
Claims
1. A tooling solution for fire escaping in small-diameter high-pressure flowmeters, comprising a high-pressure flowmeter housing (1) and two limiting components, characterized in that: Two limiting components are set at both ends of the high pressure flow meter mold shell (1). The limiting components include a positioning ring (2) and two connecting rods (3). The two connecting rods (3) are fixed on both sides of the positioning ring (2). A connecting port (4) is opened on the connecting rod (3). A first screw (5) is inserted into the connecting port (4) between the two limiting components. A limiting block (8) is fixed at one end of the first screw (5). A nut (6) is screwed onto the outer wall of the other end of the first screw (5).
2. The tooling for solving the problem of arcing in small-diameter high-pressure flowmeters according to claim 1, characterized in that: The positioning ring (2) is collinear with the center of the inner hole of the high-pressure flow meter housing (1).
3. The tooling for solving the problem of arcing in small-diameter high-pressure flowmeters according to claim 1, characterized in that: A throttle (7) is fixed to the outer wall of the nut (6).
4. The tooling for solving the problem of arcing in small-diameter high-pressure flowmeters as described in claim 1, characterized in that: The limiting component is equipped with a positioning component, which includes a mounting plate (9), a plug (10), a connecting shell (11), a turntable (13), a slider (18), a limiting rod (17), a second screw (12), and a fixing rod (15).
5. The tooling for solving the problem of arcing in small-diameter high-pressure flowmeters according to claim 4, characterized in that: The mounting plate (9) is fixed to the end of the connecting rod (3) away from the high-pressure flow meter mold shell (1). The plug (10) is fixed to the end of the mounting plate (9) close to the high-pressure flow meter mold shell (1). The connecting shell (11) is fixed to the end of the plug (10). The turntable (13) is rotatably connected to the end of the plug (10). The turntable (13) has multiple sliding ports (14) at one end. The slider (18) is slidably connected in the sliding ports (14). The limiting rod (17) is rotatably connected to the end of the plug (10). At one end of the slider (18), the outer wall of the connecting shell (11) is provided with a limiting port corresponding to the limiting rod (17). The limiting rod (17) slides in the limiting port. The second screw (12) is screwed into the plug (10). The fixing rod (15) is fixed at one end of the second screw (12) near the connecting shell (11). The outer wall of the fixing rod (15) is provided with a limiting groove (16). The inner wall of the turntable (13) is adapted to the limiting groove (16) and the fixing rod (15).
6. The tooling for solving the problem of arcing in small-diameter high-pressure flowmeters according to claim 4, characterized in that: One end of the plug (10) is fixed to a limiting shell (19), and the turntable (13) is located inside the limiting shell (19).