An electric grinder dedicated to graphite rod of oil spectrometer

Abstract

The utility model relates to graphite grinding technical field, and disclose a kind of electric grinder specially used for oil liquid spectrometer graphite rod, including base shell, and the motor being set on the upside of base shell, the output of motor is equipped with fixed plate, and the inside of fixed plate is equipped with motor shaft, the side of fixed plate is equipped with protective cover, and one end of protective cover is equipped with aperture, the inside of protective cover is equipped with grinding mechanism, and grinding mechanism is connected with motor shaft. With the advantages of high-efficiency automation, improve work efficiency, grinding quality is stable and reliable, solve the problem that staff manually grind graphite rod very slowly, so that efficiency improvement becomes a must to solve the problem;Common grinding method, it is difficult to control the effect and time of grinding to achieve the best effect, it is easy to cause the waste of consumables, so as to prevent excessive grinding and cause waste, improve the utilization of consumables.

Description

Technical Field

[0001] This utility model relates to the field of graphite grinding technology, specifically an electric grinder for graphite rods in an oil spectrometer. Background Technology

[0002] Graphite is an important non-metallic mineral resource with excellent physical and chemical properties. It has a wide range of applications in leading industries and high-end manufacturing industries of the national economy, such as steel, electronics and information, aerospace, new energy, medicine, and new materials, and is very important for the development of strategic emerging industries.

[0003] Graphite has an electrical conductivity approximately 100 times that of ordinary metals; it also exhibits exceptional thermal conductivity, meaning its thermal conductivity decreases with increasing temperature and becomes almost adiabatic at extremely high temperatures. It has good visible light absorption and is black and opaque. In oil spectrometers, graphite rods are used to conduct electricity and ignite the oil sample. However, the combustion of the oil sample sputters substances onto the graphite rod, reducing its conductivity and affecting the instrument's operation. Therefore, the graphite rods need to be ground periodically to maintain optimal performance. When using oil spectrometers, multiple graphite rods are typically prepared, and manual grinding is inefficient. Improving efficiency is therefore crucial. Common grinding methods often lack precise control over the grinding effect and time, easily leading to waste of consumables. Therefore, preventing over-grinding and waste, and improving the utilization rate of consumables, is essential. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an electric grinder specifically designed for graphite rods in oil spectrometers. It boasts advantages such as high efficiency and automation, improved work efficiency, and stable and reliable grinding quality. This solves the problem of slow manual grinding of graphite rods, making efficiency a crucial issue. Furthermore, commonly used grinding methods often struggle to control the grinding effect and time to achieve optimal results, easily leading to waste of consumables. Therefore, this invention addresses the issue of preventing over-grinding and waste, and improving the utilization rate of consumables.

[0005] (II) Technical Solution To achieve the aforementioned goals of high efficiency and automation, improved work efficiency, and stable and reliable grinding quality, this utility model provides the following technical solution: an electric grinder specifically for graphite rods in an oil spectrometer, comprising a base shell and a motor mounted on the upper side of the base shell. The output end of the motor is provided with a fixing plate, and the fixing plate contains a motor shaft. A protective cover is provided on one side of the fixing plate, and one end of the protective cover has an opening. A grinding mechanism is provided inside the protective cover, and the grinding mechanism is connected to the motor shaft.

[0006] Preferably, the grinding mechanism includes a rotary engine and a triangular blade mounted on one side of the rotary engine. The triangular blade is fixedly connected to one side of the rotary engine. One end of the rotary engine is provided with a connecting shaft, and one end of the connecting shaft is fixedly connected to one end of the motor shaft.

[0007] Preferably, an O-ring is provided on one side of the fixing plate, and the O-ring is located at the connection between the protective cover and one side of the fixing plate. A skeleton oil seal is installed at one end of the rotator, and the skeleton oil seal is located at the connection between the rotator and the inner wall of the protective cover.

[0008] Preferably, the bottom of the base housing is provided with a base plate, and a wire strip holder and a time relay are installed on the upper side of the base plate. The wire strip holder and the time relay are disposed inside the base housing.

[0009] Preferably, one end of the base housing is provided with a wire-threading slot for connecting and fixing wires, and a switch is installed on the upper side of the base housing.

[0010] (III) Beneficial Effects Compared with existing technologies, this utility model provides an electric grinder specifically designed for graphite rods in oil spectrometers, offering the following advantages: This electric grinder automates graphite rod grinding by driving a grinding mechanism to high-speed rotation via a motor, replacing the traditional, inefficient manual grinding method and significantly improving grinding efficiency while saving labor and time costs. The grinding mechanism, composed of specific triangular blades and a rotary head, can uniformly and smoothly grind the ends of the graphite rods at a stable motor speed, effectively ensuring the consistency of the ground surface. This provides stable and reliable pretreatment conditions for oil spectral analysis, improving the accuracy of analytical data. A protective cover effectively prevents graphite dust generated during grinding from splashing outwards, protecting the health of operators and preventing dust pollution of the laboratory environment. Simultaneously, the protective cover prevents operators from accidentally contacting the high-speed rotating blades, improving equipment safety. Integrating the motor, control switch, time relay, and other components into the base housing results in a compact and rationally laid-out device that is easy to operate and maintain. The design of the wire-threading bayonet ensures neat and secure wiring connections. The use of O-rings and skeleton oil seals effectively prevents graphite dust from entering the moving parts and connections inside the equipment, reducing component wear, ensuring stable operation of the motor shaft and rotator, and extending the equipment's service life. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the present utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3This is a structural diagram of the rotator of this utility model.

[0012] In the diagram: 1. Motor; 2. Motor shaft; 3. Fixing plate; 4. O-ring; 5. Triangular blade; 6. Rotator; 7. Frame oil seal; 8. Protective cover; 9. Wire guide; 10. Base shell; 11. Cable tray; 12. Base plate; 13. Time relay; 14. Switch; 15. Connecting shaft. Detailed Implementation

[0013] 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.

[0014] Example: Please refer to Figure 1-3 An electric grinder for graphite rods in an oil spectrometer includes a base housing 10 and a motor 1 mounted on the upper side of the base housing 10. The output end of the motor 1 is provided with a fixing plate 3, and the inside of the fixing plate 3 is provided with a motor shaft 2. A protective cover 8 is provided on one side of the fixing plate, and one end of the protective cover 8 is provided with an opening. A grinding mechanism is provided inside the protective cover 8, and the grinding mechanism is connected to the motor shaft 2.

[0015] This electric grinder aims to provide an automated and professional solution for grinding graphite rods used in oil spectrometers, replacing the inefficient and inconsistent quality of manual grinding. The base housing 10 is the basic support structure and protective shell of the equipment. Typically made of metal or high-strength engineering plastics, it provides a mounting base and physical protection for internal components such as the motor and circuitry, while also contributing to the overall integrity and aesthetics of the equipment. The motor 1, as the power source of the equipment, is typically a high-speed DC or AC motor. It is responsible for converting electrical energy into mechanical energy, providing the necessary rotational power for subsequent grinding operations. The motor 1 is securely mounted on the upper side of the base housing 10. The mounting plate 3 is a crucial connecting and supporting component. One end is firmly connected to the output end of the motor 1, and the other end is used to mount the protective cover 8. The mounting plate 3 ensures the precise and stable relative position of the motor 1, the protective cover 8, and the internal grinding mechanism. The motor shaft 2 is the power output shaft of the motor 1, directly bearing the torque generated by the motor. It passes through the center of the mounting plate 3, transmitting rotational power to the grinding mechanism located within the protective cover 8. The protective cover 8 is an important safety component, typically a transparent or semi-transparent cover-like structure (such as acrylic material) that covers the entire exterior of the grinding mechanism. One end has an opening allowing the graphite rod to be ground to extend inside. The protective cover 8 prevents the generation of fine graphite dust during grinding, thus protecting the environment from environmental pollution and operator health, while also preventing accidental contact with high-speed rotating components. The grinding mechanism, the core component performing the grinding function, is enclosed inside the protective cover 8 and receives power from the motor shaft 2, directly cutting and grinding the graphite rod.

[0016] The grinding mechanism includes a rotary 6 and a triangular blade 5 mounted on one side of the rotary 6. The triangular blade 5 is fixedly connected to one side of the rotary 6. One end of the rotary 6 is provided with a connecting shaft 15, and one end of the connecting shaft 15 is fixedly connected to one end of the motor shaft 2.

[0017] The rotary unit 6 is the main power transmission and load-bearing component of the grinding mechanism. It is typically a metal disc or shaft-shaped part, one end of which is fixed to the motor shaft 2 via component 15 (connecting shaft), allowing it to rotate synchronously at high speed with the motor. Triangular inserts 5 are mounted on its side or end face. Triangular inserts 5 are the tools that directly perform the grinding task. Their triangular shape provides a sharp cutting edge, enabling efficient removal of the ablated layer and uneven parts at the end of the graphite rod. They are securely fixed to one side of the rotary unit 6 by screws or welding. The connecting shaft 15 is a connector used to reliably transmit the rotational power of the motor shaft 2 to the rotary unit 6. It can be integrally formed with the motor shaft 2 or a separate part, connected to both the motor shaft 2 and the rotary unit 6 via couplings, set screws, etc.

[0018] An O-ring 4 is provided on one side of the fixed plate 3, and the O-ring 4 is located at the connection between the protective cover 8 and the fixed plate 3. A skeleton oil seal 7 is installed at one end of the rotator 6, and the skeleton oil seal 7 is located at the connection between the rotator 6 and the inner wall of the protective cover 8.

[0019] O-ring 4 is a typical static sealing element, usually made of elastic materials such as rubber or silicone. It is installed at the connection interface between the fixed plate 3 and the protective cover 8. When the protective cover 8 is fastened to the fixed plate 3, the O-ring 4 is compressed, forming an effective seal to prevent external dust or internal graphite dust from entering the equipment through the joint gap. The skeleton oil seal 7 is a dynamic sealing element for the rotating shaft. It is installed between the shaft of the rotator 6 and the perforation in the inner wall of the protective cover 8. It typically contains a spring ring that provides continuous clamping force, ensuring a tight fit between the sealing lip and the rotating shaft surface, thus allowing the shaft to rotate at high speed while effectively preventing fine graphite dust from entering the area of ​​the fixed plate 3 and motor 1 along the rotating shaft, protecting the core power components.

[0020] The base housing 10 has a base plate 12 at its bottom, and a wire harness holder 11 and a time relay 13 are mounted on the upper side of the base plate 12. The wire harness holder 11 and the time relay 13 are located inside the base housing 10. The base plate 12, located at the bottom of the base housing 10, is the mounting base for internal electrical components and is usually made of insulating material or metal plate. The wire harness holder 11 is also called a terminal block. It is the centralized connection point for the power and control lines inside the equipment, used to neatly connect the wires from the power source, the cables of the motor 1, and the control circuits of components such as the switch 14 and the time relay 13, facilitating installation and maintenance and improving electrical safety and reliability. The time relay 13 is an automated control element. The operator can preset the grinding time (e.g., 10 seconds, 20 seconds). When the equipment is started, the time relay 13 starts timing, and automatically cuts off the power to the motor 1 after the set time, stopping the equipment. This ensures the consistency of the grinding time for each operation, thereby guaranteeing the standardization and repeatability of the graphite rod grinding effect and avoiding over-grinding or under-grinding due to human error.

[0021] One end of the base housing 10 is provided with a wire-threading slot 9 for connecting and fixing wires, and a switch 14 is installed on the upper side of the base housing 10.

[0022] Cable guide 9: A standard interface designed on the side wall or rear end of the base housing 10, typically a hole with a rubber protective coil. The main power cord of the device is introduced into the base through this guide and connected to the cable tray 11. The function of the cable guide 9 is to secure the wire, preventing it from being accidentally pulled out, and to protect the wire insulation from being cut by the sharp edges of the housing, thus improving the safety performance of the device. Switch 14 is the main control component for user operation of the device, typically a self-locking or instantaneous push-button or rocker switch, installed on the upper side of the base housing 10 in an easily accessible position. It is used to control the power supply to the entire device, realizing the start and stop of the device.

[0023] Working Principle: Preparation and Power-On: The operator inserts the graphite rod of the oil spectrometer to be ground through the opening at the front end of the protective cover 8. The external power supply is connected, and the equipment is in standby mode. The operator presses switch 14. The circuit is connected, and power is transmitted through the cable tray 11 to the time relay 13 and motor 1. After being powered on, motor 1 begins to rotate at high speed, and its torque is transmitted to the rotator 6 through the motor shaft 2 and connecting shaft 15, ultimately driving the triangular blade 5 fixed on the rotator 6 to rotate at high speed. The operator holds the graphite rod and gently presses its end against the high-speed rotating triangular blade 5. The sharp blade quickly and evenly cuts away the uneven parts and old ablation layer on the end face of the graphite rod, generating a fresh, smooth end face. Throughout the grinding process, all graphite dust generated is confined inside the sealed protective cover 8. The sealing design of the protective cover 8 (ensured by O-rings 4 and skeleton oil seals 7) ensures that dust does not escape, protecting the environment and the operator. Simultaneously with the start of motor 1, time relay 13 begins timing. When the grinding time reaches the preset value, time relay 13 activates, automatically cutting off the circuit supplying motor 1, stopping motor 1, and ending the grinding process. This ensures consistent grinding duration for each operation, resulting in stable and repeatable grinding quality. The operator removes the processed graphite rod, and the equipment is ready for the next grinding operation.

[0024] This equipment achieves efficient, safe, and standardized grinding of graphite rods for oil spectrometers through the coordinated operation of motor drive, protective cover sealing, and time relay automatic control, effectively solving many drawbacks of traditional manual methods.

[0025] 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 claims and their equivalents.

Claims

1. An electric grinder specifically designed for graphite rods in an oil spectrometer, characterized in that: Includes a base shell (10) and a motor (1) disposed on the upper side of the base shell (10). The output end of the motor (1) is provided with a fixing plate (3), and the inside of the fixing plate (3) is provided with a motor shaft (2). A protective cover (8) is provided on one side of the fixing plate, and an opening is provided at one end of the protective cover (8). A grinding mechanism is provided inside the protective cover (8), and the grinding mechanism is connected to the motor shaft (2).

2. The electric grinder for graphite rods in an oil spectrometer according to claim 1, characterized in that: The grinding mechanism includes a rotary (6) and a triangular blade (5) mounted on one side of the rotary (6). The triangular blade (5) is fixedly connected to one side of the rotary (6). One end of the rotary (6) is provided with a connecting shaft (15), and one end of the connecting shaft (15) is fixedly connected to one end of the motor shaft (2).

3. The electric grinder specifically for graphite rods in an oil spectrometer according to claim 2, characterized in that: One side of the fixed plate (3) is provided with an O-ring (4), and the O-ring (4) is located at the connection between the protective cover (8) and the fixed plate (3). One end of the rotator (6) is equipped with a skeleton oil seal (7), and the skeleton oil seal (7) is located at the connection between the rotator (6) and the inner wall of the protective cover (8).

4. The electric grinder for graphite rods in an oil spectrometer according to claim 1, characterized in that: The bottom of the base housing (10) is provided with a base plate (12), and a wire strip seat (11) and a time relay (13) are installed on the upper side of the base plate (12). The wire strip seat (11) and the time relay (13) are located inside the base housing (10).

5. An electric grinder specifically for graphite rods in an oil spectrometer according to claim 1, characterized in that: One end of the base housing (10) is provided with a wire-threading slot (9) for connecting and fixing wires, and a switch (14) is installed on the upper side of the base housing (10).

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