Brittle fracture prevention ceramic plunger
By installing a metal insert on the ceramic plunger body and setting a chamfered structure, the problem of brittle fracture caused by clamping of ceramic plungers is solved, achieving the effects of preventing brittle fracture and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SAMRO HOMOGENIZER
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-14
AI Technical Summary
Ceramic plungers are prone to brittle fracture when clamped in a homogenizer, affecting operational safety and service life.
A metal sleeve is fixedly fitted at one end of the ceramic plunger body. The clamp is held in place by the metal sleeve to avoid directly clamping the ceramic plunger body. The metal sleeve is tightly connected to the ceramic plunger and has a chamfered structure to distribute the clamping force.
It effectively prevents ceramic plunger brittleness, improves performance and lifespan, and ensures motion stability and safety.
Smart Images

Figure CN224113846U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of homogenizer equipment technology, and in particular to a ceramic plunger that is resistant to brittle fracture. Background Technology
[0002] The plunger in a homogenizer is a moving part and the most vulnerable component, therefore it requires high hardness to achieve excellent wear resistance. Ceramic is an excellent high-wear-resistant material and is often used to manufacture plungers for homogenizers; however, ceramic materials are relatively brittle.
[0003] Because one end of the plunger needs to be clamped during installation, ceramic plungers are prone to brittleness and cracking after prolonged clamping, affecting their operational safety, stability, and service life. Therefore, there is a need for a brittle-resistant ceramic plunger that can solve the problem of ceramic plungers in homogenizers easily cracking after clamping. Summary of the Invention
[0004] The purpose of this invention is to provide a brittle ceramic plunger that can solve the problem that ceramic plungers in homogenizers in the prior art are prone to brittle fracture after being clamped by clamps.
[0005] This utility model is implemented as follows:
[0006] A ceramic plunger designed to prevent brittle fracture includes a ceramic plunger body and a metal insert; the metal insert is fixedly fitted onto one end of the ceramic plunger body, and a clamp is held in place on the metal insert, so that the clamp holds the ceramic plunger body through the metal insert.
[0007] The inner diameter of the metal insert is the same as the diameter of the ceramic plunger body, so that the metal insert and the ceramic plunger body are tightly connected into a whole.
[0008] One end face of the metal insert is flush with one end face of the ceramic plunger body.
[0009] The metal insert has a first chamfer structure formed at both ends of its edge.
[0010] A second chamfer structure is formed on the other end face of the ceramic plunger body.
[0011] Compared with the prior art, this utility model has the following advantages:
[0012] This invention features a metal insert that fits tightly onto the ceramic plunger body, allowing the clamp to hold the plunger in place. This prevents the clamp from directly clamping the ceramic plunger body, which could cause it to crack. The invention also improves the performance and lifespan of the ceramic plunger body while ensuring stable clamping. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the anti-brittle ceramic plunger of this utility model.
[0014] In the figure, 1 is the ceramic plunger body, 2 is the metal insert, 3 is the first chamfer structure, and 4 is the second chamfer structure. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0016] Please see the appendix Figure 1 A type of anti-brittle ceramic plunger includes a ceramic plunger body 1 and a metal sleeve 2; the metal sleeve 2 is fixedly fitted onto one end of the ceramic plunger body 1, and a clamp (not shown in the figure) is clamped on the metal sleeve 2, so that the clamp clamps the ceramic plunger body 1 through the metal sleeve 2.
[0017] By setting the metal sleeve 2, the clamp is held on the ceramic plunger body 1 through the metal sleeve 2, avoiding the clamp being directly held on the ceramic plunger body 1. This prevents the ceramic plunger body 1 from cracking due to long-term clamping by the clamp, which helps to ensure the movement safety and stability of the ceramic plunger body 1 and extends the service life of the ceramic plunger body 1.
[0018] The inner diameter of the metal sleeve 2 is the same as the diameter of the ceramic plunger body 1, so that the metal sleeve 2 and the ceramic plunger body 1 are tightly connected into a whole.
[0019] The metal insert 2 can be made according to the size of the ceramic plunger body 1. The metal insert 2 and the ceramic plunger body 1 are in surface-fit contact, which makes them tightly fitted and not easy to fall off. It can also disperse the clamping force of the clamp and prevent the end of the ceramic plunger body 1 from cracking under the clamping force.
[0020] One end face of the metal insert 2 is flush with one end face of the ceramic plunger body 1 to prevent the metal insert 2 from protruding from the end of the ceramic plunger body 1 and to ensure the normal installation of the ceramic plunger body 1.
[0021] The metal insert 2 has a first chamfer structure 3 formed at both ends of its edge.
[0022] The first chamfer structure 3 is designed to minimize collisions between the metal bushing 2 and other components within the homogenizer. The chamfer angle of the first chamfer structure 3 can be adjusted to meet specific needs.
[0023] A second chamfer structure 4 is formed on the other end face of the ceramic plunger body 1.
[0024] The second chamfer structure 4 makes the other end of the ceramic plunger body 1 smoother, reducing edge wear. The chamfer angle of the second chamfer structure 4 can be adjusted adaptively according to actual needs.
[0025] The metal sleeve 2 is made of metal materials such as steel and aluminum alloy. The metal sleeve 2 is not easy to crack or deform. The clamp is held on the metal sleeve 2, so that the clamping force of the clamp is borne by the metal sleeve 2, thus avoiding the clamp from being directly clamped on the ceramic plunger body 1 and causing the ceramic plunger body 1 to crack.
[0026] The movement process of the ceramic plunger body 1 is consistent with the movement process of the ceramic plunger in the existing homogenizer, and will not be described again here.
[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.
Claims
1. A ceramic plunger designed to prevent brittle fracture, characterized in that: It includes a ceramic plunger body (1) and a metal sleeve (2); the metal sleeve (2) is fixedly fitted on one end of the ceramic plunger body (1), and the clamp is held on the metal sleeve (2), so that the clamp holds the ceramic plunger body (1) through the metal sleeve (2).
2. The anti-brittle ceramic plunger according to claim 1, characterized in that: The inner diameter of the metal sleeve (2) is the same as the diameter of the ceramic plunger body (1), so that the metal sleeve (2) and the ceramic plunger body (1) are tightly connected into a whole.
3. The anti-brittle ceramic plunger according to claim 1 or 2, characterized in that: One end face of the metal insert (2) is flush with one end face of the ceramic plunger body (1).
4. The anti-brittle fracture ceramic plunger according to claim 3, characterized in that: The metal insert (2) has a first chamfer structure (3) formed at both ends of its edges.
5. The anti-brittle fracture ceramic plunger according to claim 3, characterized in that: A second chamfer structure (4) is formed on the other end face of the ceramic plunger body (1).