Ceramic core press viscosity self-adapting regulation nozzle

Abstract

The utility model provides a kind of viscosity self-adaptive regulation nozzle of ceramic core press, belong to special ceramic manufacturing technical field, including shell, nozzle head and support assembly being arranged in the inside of shell, the support assembly includes valve core, reset spring.The utility model realizes the self-adaptive regulation of temperature, viscosity in ceramic slurry conveying process by the synergistic effect of tungsten carbide-ceramic composite nozzle head and memory alloy driving mechanism, the double effect of 60 ° conical angle valve core cooperation shape memory alloy spring and reset spring, can be automatically regulated opening size according to temperature change, effectively solve the problem of dripping and blockage under high pressure, uniformly distributed heating rod cooperate thermocouple monitoring form stable temperature field, with excellent wear resistance, sealing and temperature response, significantly improve the forming quality and production efficiency of ceramic core, can effectively prevent dripping, protect core from being destroyed, while prolong the service life of nozzle, improve production efficiency and finished product quality.

Description

Technical Field

[0001] This utility model belongs to the field of special ceramic manufacturing technology, specifically relating to a viscosity adaptive adjustment nozzle for a ceramic core pressing machine. Background Technology

[0002] Ceramic core pressing machines use high pressure to spray ceramic slurry into a mold to form complex part structures. However, during the heating process, the viscosity of binders such as resins decreases significantly with increasing temperature, making it difficult for traditional fixed-opening nozzles to adapt to dynamic viscosity changes. This leads to problems such as dripping contamination, uneven spraying, and clogging. Currently, the method of adjusting the nozzles based on manual experience is slow and lacks precision. Improved solutions using electric or pneumatic valves face technical drawbacks such as valve core wear and sealing failure due to the high abrasiveness of ceramic slurry, as well as complex external control systems with high failure rates and high maintenance costs. Utility Model Content

[0003] The purpose of this invention is to provide a viscosity-adaptive adjusting nozzle for a ceramic core pressing machine, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A viscosity-adaptive adjusting nozzle for a ceramic core pressing machine includes a housing, a nozzle head, and a support assembly disposed inside the housing. The support assembly includes a valve core, a return spring, a shape memory alloy spring, and a baffle. A heating rod is disposed between the housing and the chamber.

[0006] As a preferred embodiment of this utility model, the housing is provided with a valve port and a top cover is installed on its upper part.

[0007] As a preferred embodiment of this utility model, the nozzle head includes a first sealing ring and a first opening, and is installed and fixed through the third opening of the housing.

[0008] As a preferred embodiment of the present invention, the housing further includes a second opening, a slot, and a channel, and the chamber is installed via the slot on the housing.

[0009] As a preferred embodiment of this utility model, a shape memory alloy spring is installed on the rear part of the conical surface of the valve core, and a return spring is installed at its tail end, and the return spring is fixed by a baffle.

[0010] As a preferred embodiment of this utility model, the shape memory alloy spring is provided with a shape memory alloy spring protective cover, and the reset spring is provided with a spring protective cover.

[0011] As a preferred embodiment of this utility model, the shape memory alloy spring protective cover has a through hole on its outer circumference, and a thermocouple is installed in the second opening of the housing.

[0012] As a preferred embodiment of this utility model, the upper cover is provided with a fourth opening and is sealed to the upper end face of the shell through a second sealing ring.

[0013] In a preferred embodiment of this invention, the heating rods are evenly distributed along the circumference between the shell and the chamber.

[0014] In a preferred embodiment of this utility model, the top cover is installed through the upper end face of the shell, and a second sealing ring is provided therebetween.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the synergistic effect of the tungsten carbide-ceramic composite nozzle head and the shape memory alloy drive mechanism, the temperature and viscosity of the ceramic slurry are adaptively adjusted during the conveying process. The 60° cone angle valve core, combined with the dual action of the shape memory alloy spring and the return spring, can automatically adjust the opening size according to temperature changes, effectively solving the problems of dripping and clogging under high pressure conditions. The uniformly distributed heating rods, combined with thermocouple monitoring, form a stable temperature field with excellent wear resistance, sealing and temperature response, significantly improving the forming quality and production efficiency of the ceramic core. It can effectively prevent dripping, protect the core from damage, extend the service life of the nozzle, and improve production efficiency and finished product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial schematic diagram of the support component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the axial displacement of the valve core of this utility model.

[0020] In the diagram: 1. Housing; 101. Second opening; 102. Slot; 103. Third opening; 2. Nozzle head; 201. First sealing ring; 202. First opening; 3. Support assembly; 301. Spring protective cover; 302. Shape memory alloy spring protective cover; 303. Valve core; 304. Return spring; 305. Shape memory alloy spring; 306. Baffle; 307. Valve port; 308. Channel; 4. Chamber; 5. Heating rod; 6. Thermocouple; 7. Top cover; 701. Second sealing ring; 702. Fourth opening; 8. Through hole. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example

[0025] Reference Figure 1-3 This is an embodiment of the present invention. This embodiment provides a viscosity adaptive adjustment nozzle for a ceramic core pressing machine, including a housing 1, a nozzle head 2, and a support assembly 3 disposed inside the housing 1. The support assembly 3 includes a valve core 303, a reset spring 304, a shape memory alloy spring 305, and a baffle 306. A heating rod 5 is provided between the housing 1 and the chamber 4.

[0026] The integrated design achieves a compact layout of the nozzle device. The shape memory alloy spring 305 and the return spring 304 work together to automatically adjust the position of the valve core 303 according to temperature changes, effectively preventing leakage under high pressure conditions.

[0027] Specifically, the housing 1 is provided with a valve port 307, and a top cover 7 is installed on its upper part. The nozzle head 2 includes a first sealing ring 201 and a first opening 202, and is installed and fixed through the third opening 103 of the housing 1.

[0028] The nozzle head 2, made of tungsten carbide-ceramic composite material, achieves double sealing through the first sealing ring 201, which ensures wear resistance under high temperature conditions and sealing reliability under high pressure conditions. The precise size design of the first opening 202 can optimize the slurry flow characteristics.

[0029] Furthermore, the housing 1 also includes a second opening 101, a slot 102, and a channel 308, and the chamber 4 is installed through the slot 102 on the housing 1.

[0030] The modular design of the housing 1 facilitates the assembly and maintenance of the components, the second opening 101 is used to install the temperature monitoring element, and the slot 102 ensures the accurate positioning and installation of the chamber 4.

[0031] Preferably, a shape memory alloy spring 305 is installed at the rear of the conical surface of the valve core 303, and a return spring 304 is installed at its tail. The return spring 304 is fixed by a baffle 306. A shape memory alloy spring protective cover 302 is provided on the outside of the shape memory alloy spring 305, and a spring protective cover 301 is provided on the outside of the return spring 304.

[0032] The valve core 303 with a 60° cone angle, combined with a dual spring system, achieves precise flow control: at low temperatures, the reset spring 304 pushes the valve core 303 forward to reduce the opening and increase flow resistance; at high temperatures, the shape memory alloy spring 305 expands and moves the valve core 303 backward to expand the opening, achieving adaptive adjustment. The dual protective cover design not only prevents mechanical damage to the spring system, but also achieves efficient heat conduction through the through hole 8 on the protective cover 302, ensuring timely temperature response.

[0033] Furthermore, the shape memory alloy spring protective cover 302 has a through hole 8 on its outer circumference, a thermocouple 6 is installed in the second opening 101 of the housing 1, and the upper cover 7 has a fourth opening 702 and is sealed to the upper end face of the housing 1 through the second sealing ring 701.

[0034] Among them, the through hole 8 enhances the heat exchange efficiency, the thermocouple 6 monitors the temperature in real time to prevent material carbonization, and the sealing design of the top cover 7 ensures the sealing performance under high pressure working environment.

[0035] Furthermore, the heating rods 5 are evenly distributed along the circumference between the housing 1 and the chamber 4, and the top cover 7 is installed through the upper end face of the housing 1, with a second sealing ring 701 in between.

[0036] The tangentially arranged heating rods 5 form a uniform temperature field, which, together with the second sealing ring 701, achieves a double seal, ensuring that the ceramic slurry maintains stable temperature and viscosity characteristics throughout the entire working process.

[0037] During use, when the ceramic slurry enters the inner cavity of the housing 1, the heating rod 5 starts heating, and the thermocouple 6 monitors the temperature in real time. At low temperatures, the high-viscosity slurry causes the return spring 304 to push the valve core 303 forward, narrowing the valve opening 307 to increase flow resistance. As the temperature rises, the shape memory alloy spring 305 expands due to heat, overcoming the resistance of the return spring 304 and pulling the valve core 303 backward, widening the valve opening 307 to reduce flow resistance. The first opening 202 of the tungsten carbide-ceramic composite nozzle head 2 evenly extrudes the slurry, while the first sealing ring 201 and the second sealing ring 701 ensure that there is no leakage throughout the entire working process, thereby realizing adaptive flow regulation and stable output of the ceramic slurry at different temperatures.

[0038] In summary, by adopting a modular design, the device consists of a housing 1, a tungsten carbide-ceramic composite nozzle head 2, and an intelligent adjustment assembly. The nozzle head 2 achieves high-pressure sealing through a first sealing ring 201. A 60° cone-angle valve core 303, along with a shape memory alloy spring 305 and a return spring 304, forms an adaptive flow regulation system. This, combined with evenly distributed heating rods 5 and thermocouples 6, achieves precise temperature control. This device automatically adjusts the viscosity of the ceramic slurry through intelligent temperature control, effectively solving the problems of dripping and clogging under high-pressure conditions. Its tungsten carbide-ceramic material and double-sealing design ensure wear resistance and sealing performance under high temperature and high pressure environments, significantly improving the forming quality and production efficiency of the ceramic core.

[0039] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0040] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0041] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A viscosity-adaptive adjusting nozzle for a ceramic core pressing machine, characterized in that: It includes a housing (1), a nozzle head (2) and a support assembly (3) disposed inside the housing (1). The support assembly (3) includes a valve core (303), a reset spring (304), a shape memory alloy spring (305) and a baffle (306). A heating rod (5) is provided between the housing (1) and the chamber (4).

2. The self-adapting viscosity adjustment nozzle for ceramic press core machine according to claim 1, characterized in that: The housing (1) is provided with a valve port (307) and a cover (7) is installed on its upper part.

3. The self-adapting viscosity adjustment nozzle for ceramic press core machine according to claim 2, characterized in that: The nozzle head (2) includes a first sealing ring (201) and a first opening (202), and is fixed by the third opening (103) of the housing (1).

4. The self-adapting viscosity adjustment nozzle for ceramic press core machine according to claim 3, characterized in that: The housing (1) further includes a second opening (101), a slot (102) and a channel (308), and the chamber (4) is installed through the slot (102) on the housing (1).

5. The self-adapting viscosity adjustment nozzle for ceramic press core machine according to claim 4, characterized in that: A shape memory alloy spring (305) is installed on the rear part of the conical surface of the valve core (303), and a return spring (304) is installed at its tail. The return spring (304) is fixed by a baffle (306).

6. The self-adapting viscosity adjustment nozzle for ceramic press core machine according to claim 5, characterized in that: The shape memory alloy spring (305) is provided with a shape memory alloy spring protective cover (302), and the return spring (304) is provided with a spring protective cover (301).

7. The self-adapting viscosity adjustment nozzle for ceramic press core machines according to claim 6, characterized in that: The shape memory alloy spring protective cover (302) has a through hole (8) on its outer circumference, and a thermocouple (6) is installed in the second opening (101) of the housing (1).

8. The self-adapting viscosity adjustment nozzle for ceramic press core machine according to claim 6, characterized in that: The upper cover (7) is provided with a fourth opening (702) and is sealed to the upper end face of the shell (1) through a second sealing ring (701).

9. The viscosity adaptive adjusting nozzle for a ceramic core pressing machine according to claim 6, characterized in that: The heating rod (5) is evenly distributed along the circumference between the shell (1) and the chamber (4).

10. The self-adapting viscosity adjustment nozzle for ceramic press core machine according to claim 6, characterized in that: The top cover (7) is installed through the upper end face of the housing (1), and a second sealing ring (701) is provided therebetween.

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