Low-temperature pulverizer

Abstract

The utility model relates to the technical field of material crushing equipment, and provides a low-temperature crusher, which is used for solving the problems that materials are easily denatured due to temperature rise and active ingredients are damaged when heat-sensitive materials are treated by a traditional crusher. The main body of the low-temperature crusher is a crusher body, a crushing structure is arranged in the crusher body, and a cooling interlayer is arranged around the crusher body; an external compression type refrigerating machine conveys refrigerants to the cooling interlayer through a heat preservation cold supply pipeline, the temperature in the cavity can be precisely regulated and controlled to be-20 DEG C to 0 DEG C, the smashing structure is driven by a variable frequency motor and works through meshing smashing teeth with a special transmission ratio, tooth bodies are made of high-strength abrasion-resistant alloy, the surfaces of the tooth bodies are hardened, and the smashing efficiency and durability are improved. In addition, the equipment has sealing and noise reduction design, is simple and convenient to operate, and is widely applicable to industries with low-temperature and high-efficiency requirements on material crushing, such as pharmacy, food and chemical engineering.

Description

A low-temperature pulverizer Technical Field

[0001] This utility model relates to the technical field of material crushing equipment, specifically a low-temperature crusher. Background Technology

[0002] In many industries such as pharmaceuticals, food, and chemicals, it is often necessary to pulverize various materials.

[0003] However, for some heat-sensitive materials, such as certain traditional Chinese medicines, food additives, and biological products, traditional pulverizers generate a large amount of heat during the pulverization process due to mechanical friction, causing the material temperature to rise sharply. The high-temperature environment can easily denature heat-sensitive materials, resulting in a significant loss of nutrients, active substances, and flavor compounds, which seriously affects the quality and performance of the products. Existing pulverizers cannot balance pulverization efficiency with material temperature control, and therefore cannot meet the pulverization requirements of heat-sensitive materials.

[0004] Therefore, a cryogenic pulverizer needs to be designed to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a low-temperature pulverizer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A low-temperature pulverizer includes a pulverizer body, an internal pulverizing structure, a cooling jacket located inside the pulverizer body and surrounding the pulverizing structure, an external cooling pipe connecting the cooling jacket to an externally located refrigeration device, an upper cover on the upper part of the pulverizer body, a matching sealing cover fixedly connected to the upper part of the upper cover, and a handle fixedly installed on the top of the sealing cover.

[0008] As a preferred embodiment of this utility model, the crushing structure includes a first crushing tooth and a second crushing tooth located inside the crusher body. The first crushing tooth and the second crushing tooth are each connected to a drive shaft. The tail ends of the drive shafts on the first crushing tooth and the second crushing tooth are respectively connected to a first drive gear and a second drive gear. The head end of the drive shaft of the first crushing tooth is fixedly connected to a drive motor located on the outside through a coupling. The drive motor is a variable frequency motor. The head end of the drive shaft of the second crushing tooth is rotatably connected to the inner wall of the crusher body through a bearing.

[0009] As a preferred embodiment of this utility model, the first crushing tooth and the second crushing tooth are meshed together with a transmission ratio of 1:1.2-1:1.5 to ensure a reasonable speed difference between the first crushing tooth and the second crushing tooth, thereby improving the crushing efficiency. Both are made of high-strength wear-resistant alloy material and have undergone surface hardening treatment to improve their wear resistance and service life.

[0010] As a preferred embodiment of this utility model, the cooling jacket is made of stainless steel with a thickness ranging from 3 to 5 millimeters to ensure good cooling effect and sufficient strength.

[0011] As a preferred embodiment of this utility model, the cooling pipe is an insulated pipe, which is wrapped with heat insulation material to reduce the loss of cold energy of the refrigerant during transmission and ensure cooling efficiency.

[0012] As a preferred embodiment of this utility model, the refrigeration device is a compression refrigeration machine with a refrigeration temperature range of -20℃ to 0℃, and has automatic temperature adjustment and control functions, which can accurately adjust the temperature inside the pulverizing chamber according to the pulverizing requirements.

[0013] As a preferred embodiment of this utility model, the inner wall of the sealing cover is provided with sound-absorbing and noise-reducing material, which can effectively reduce the noise generated during the crushing process and improve the working environment.

[0014] As a preferred embodiment of this utility model, the upper cover and the crusher body are sealed together by a sealing rubber ring, and an installation eave is provided around the inner wall of the top connection between the upper cover and the crusher body. A connecting plate that works with the installation eave is provided around the periphery of the sealing cover. Several holes are provided on the installation eave and the connecting plate, and locking bolts are used to lock and fix the parts through these holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model, through the design of a low-temperature pulverizer, achieves the following effects: 1. Equipped with an independent refrigeration device, the temperature inside the pulverizing chamber can be precisely controlled to tens of degrees below zero Celsius via a cooling jacket circulating refrigerant, preventing heat damage to heat-sensitive materials and significantly improving the retention rate of nutrients, active substances, and flavor compounds, making it suitable for fields with stringent requirements on material composition; 2. The transmission ratio between the first and second crushing teeth in the pulverizing structure is 1:1.2-1:1.5, with a reasonable speed difference, and is made of high-strength wear-resistant alloy material with hardening treatment, enabling stable and efficient pulverization even in low-temperature environments, increasing output per unit time; 3. The drive motor is a variable frequency motor, which can flexibly adjust the speed according to the material properties and pulverizing requirements, with a speed adjustment range of 500-2000 rpm, meeting the requirements of... 4. The cooling jacket is made of stainless steel, a metal with good thermal conductivity, with a thickness of 3-5 mm. This ensures excellent cooling performance and sufficient strength to quickly remove the heat generated during crushing. 5. The cooling pipes are wrapped with thermal insulation material to reduce heat loss during refrigerant transmission and ensure cooling efficiency. The refrigeration unit is a compression refrigeration unit with a cooling temperature range of -20℃ to 0℃. It also has automatic temperature adjustment and control functions, which can precisely adjust the temperature inside the crushing chamber according to crushing requirements. 6. The inner wall of the sealing cover is equipped with sound-absorbing and noise-reducing material to effectively reduce noise during crushing and improve the working environment. 7. The upper cover is sealed to the crusher body with a sealing rubber ring. The sealing cover is fixed by a connecting plate, mounting eaves, and locking bolts to prevent dust from overflowing. Attached Figure Description

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

[0018] Figure 2 is a schematic diagram of the main structure of this utility model;

[0019] Figure 3 is a top view of the structure of this utility model.

[0020] In the diagram: 1. Crusher body; 2. Crushing structure; 3. Cooling jacket; 4. Upper cover; 5. Sealing cover; 6. Handle; 7. Cooling pipe; 8. Refrigeration device; 9. Mounting eaves; 10. Connecting plate; 11. Locking bolt; 21. First crushing tooth; 22. Second crushing tooth; 23. First transmission gear; 24. Second transmission gear; 25. Drive motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] As illustrated in Figures 1-3, this utility model provides a technical solution:

[0026] A low-temperature pulverizer includes a pulverizer body 1, a pulverizing structure 2 inside the pulverizer body 1, a cooling jacket 3 inside the pulverizer body 1 and outside the pulverizing structure 2, a cooling device 8 at the outer end of the cooling jacket 3 being connected to the interior of the cooling jacket 3 via an external cooling pipe 7, an upper cover 4 on the upper part of the pulverizer body 1, a matching sealing cover 5 fixedly connected to the upper part of the interior of the upper cover 4, and a handle 6 fixedly installed on the top of the sealing cover 5.

[0027] Specifically, the crushing structure 2 includes a first crushing tooth 21 and a second crushing tooth 22 located inside the crusher body 1. Both the first crushing tooth 21 and the second crushing tooth 22 are internally connected to a drive shaft. The tail ends of the drive shafts on the first crushing tooth 21 and the second crushing tooth 22 are respectively connected to a first drive gear 23 and a second drive gear 24. The head end of the drive shaft of the first crushing tooth 21 is fixedly connected to a drive motor 25 located on the outside via a coupling. The drive motor 25 is a variable frequency motor. The head end of the drive shaft of the second crushing tooth 22 is rotatably connected to the inner wall of the crusher body 1 via a bearing. When the drive motor 25 starts, it drives the drive shaft of the first crushing tooth 21 to rotate via the coupling. The first drive gear 23 rotates accordingly, which in turn drives the meshing second drive gear 24, causing the second crushing tooth 22 to rotate and crush the material entering the crusher body 1. Since the drive motor 25 is a variable frequency motor, the speed can be adjusted according to the material characteristics and crushing requirements.

[0028] The first crushing tooth 21 and the second crushing tooth 22 are meshed together with a transmission ratio of 1:1.2-1:1.5 to ensure a reasonable speed difference between them, thereby improving crushing efficiency. Both are made of high-strength wear-resistant alloy material and have undergone surface hardening treatment to enhance their wear resistance and service life. The high-strength wear-resistant alloy material and surface hardening treatment of the first crushing tooth 21 and the second crushing tooth 22 ensure wear resistance and long service life under low temperature and frequent use. The transmission ratio of 1:1.2-1:1.5 ensures a reasonable speed difference, improves crushing efficiency, and allows for more thorough material crushing.

[0029] Specifically, the refrigeration device 8 is a compression refrigeration unit with a refrigeration temperature range of -20℃ to 0℃, and it has automatic temperature adjustment and control functions, which can precisely adjust the temperature inside the pulverizing chamber according to the pulverizing requirements; the cooling pipe 7 is an insulated pipe, which is wrapped with heat insulation material to reduce the loss of cold energy of the refrigerant during the transmission process and ensure refrigeration efficiency; the cooling jacket 3 is made of a metal with good thermal conductivity, such as stainless steel, with a thickness of 3-5 mm to ensure good cooling effect and sufficient strength; when the refrigeration device 8 is working, the refrigerant enters the cooling jacket 3 through the cooling pipe 7, circulates in the jacket, and carries away the heat generated by the pulverizing structure 2 during operation.

[0030] Specifically, the inner wall of the sealing cover 5 is provided with sound-absorbing and noise-reducing material, which can effectively reduce the noise generated during the crushing process and improve the working environment; the upper cover 4 and the crusher body 1 are sealed together by a sealing rubber ring, and the inner wall of the top connection between the upper cover 4 and the crusher body 1 is surrounded by an installation eave 9. The outer periphery of the sealing cover 5 is provided with a connecting plate 10 that cooperates with the installation eave 9. Several holes are opened on the installation eave 9 and the connecting plate 10, and locking bolts 11 are used to lock and fix them through these holes; the sealing cover 5 can be opened or closed by the handle 6. When the machine is open, it can be used for operations such as material feeding; the upper cover 4 and the crusher body 1 are sealed and connected by a sealing rubber ring. During installation, the connecting plate 10 of the sealing cover 5 is aligned with the mounting eaves 9 on the inner wall of the connection between the upper cover 4 and the top of the crusher body 1, and locked and fixed by locking bolts 11 through the holes; the sound-absorbing and noise-reducing material on the inner wall of the sealing cover 5 can effectively reduce the noise during the crushing process and improve the working environment; the sealing connection between the upper cover 4, the crusher body 1 and the sealing cover 5 prevents dust from overflowing, ensures the cleanliness of the working environment, and also helps to maintain the low temperature environment in the crushing chamber.

[0031] The working process of this utility model is as follows: When installing the low-temperature pulverizer, firstly, install the refrigeration device 8 in a suitable position, ensuring that it is tightly connected to the cooling jacket 3 through the cooling pipe 7 without leakage. The cooling pipe 7 is wrapped with heat insulation material to reduce the loss of cold energy transmission. Then, install the first crushing tooth 21 and the second crushing tooth 22. The tail ends of their internal drive shafts are respectively connected to the first drive gear 23 and the second drive gear 24. The head end of the drive shaft of the first crushing tooth 21 is fixedly connected to the drive motor 25 on the outside through a coupling. The head end of the drive shaft of the second crushing tooth 22 is rotatably connected to the inner wall of the pulverizer body 1 through a bearing. After installation, carefully adjust the position and gap of the crushing teeth. Then, seal the upper cover 4 to the pulverizer body 1 with a sealing rubber ring. Connect the sealing cover 5 to the mounting eaves 9 through the connecting plate 10 and fix it with locking bolts 11. Turn on the power and debug the refrigeration system and pulverization system through the intelligent control panel, setting the initial parameters such as the refrigeration temperature range of the refrigeration device 8 from -20℃ to 0℃ and the pulverization time.

[0032] During crushing, the cooling device 8 is activated, and the refrigerant circulates in the cooling jacket 3, rapidly cooling the crushing chamber to the set low temperature. The cooling jacket 3 is made of 3-5 mm thick stainless steel or other thermally conductive metals to ensure effective cooling. The drive motor 25 is turned on; as it is a variable frequency motor, its speed can be adjusted according to the material characteristics. The motor drives the first crushing tooth 21 to rotate, and through the meshing of the first transmission gear 23 and the second transmission gear 24, it drives the second crushing tooth 22 to rotate. The two crushing teeth rotate relative to each other at a transmission ratio of 1:1.2-1:1.5, efficiently crushing heat-sensitive materials entering the crushing chamber from the feed inlet. During the crushing process, the cooling jacket 3 continuously removes the heat generated by mechanical friction, maintaining the material at a low temperature and preventing the heat-sensitive material from deforming due to heat.

[0033] 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. A low-temperature pulverizer, comprising a pulverizer body (1), characterized in that: The crusher body (1) is provided with a crushing structure (2) inside. A cooling jacket (3) is provided inside the crusher body (1) and outside the crushing structure (2). The cooling jacket (3) is connected to a refrigeration device (8) at the outer end through an external cooling pipe (7). The upper part of the crusher body (1) is provided with an upper cover (4). A matching sealing cover (5) is fixedly connected to the upper part of the upper cover (4). A handle (6) is fixedly installed on the top of the sealing cover (5).

2. The cryogenic pulverizer according to claim 1, characterized in that: The crushing structure (2) includes a first crushing tooth (21) and a second crushing tooth (22) located inside the crusher body (1). The first crushing tooth (21) and the second crushing tooth (22) are both connected to a transmission shaft. The tail ends of the transmission shafts on the first crushing tooth (21) and the second crushing tooth (22) are respectively connected to a first transmission gear (23) and a second transmission gear (24). The head end of the transmission shaft of the first crushing tooth (21) is fixedly connected to a drive motor (25) located on the outside through a coupling. The drive motor (25) is a variable frequency motor. The head end of the transmission shaft of the second crushing tooth (22) is rotatably connected to the inner wall of the crusher body (1) through a bearing.

3. A low-temperature pulverizer according to claim 2, characterized in that: The first crushing tooth (21) and the second crushing tooth (22) are meshed together with a transmission ratio of 1:1.2-1:1.5 to ensure a reasonable speed difference between the first crushing tooth (21) and the second crushing tooth (22). Both are made of high-strength wear-resistant alloy material and have been hardened.

4. A low-temperature pulverizer according to claim 1, characterized in that: The cooling interlayer (3) is made of stainless steel and has a thickness of 3-5 mm.

5. A low-temperature pulverizer according to claim 1, characterized in that: The cooling pipe (7) is an insulated pipe, and its exterior is wrapped with heat insulation material.

6. A cryogenic pulverizer according to claim 1, characterized in that: The refrigeration device (8) is a compression refrigeration machine with a refrigeration temperature range of -20℃ to 0℃, and has automatic temperature adjustment and control functions, which can accurately adjust the temperature in the crushing chamber according to the crushing requirements.

7. A cryogenic pulverizer according to claim 1, characterized in that: The inner wall of the sealing cover (5) is provided with sound-absorbing and noise-reducing material.

8. A cryogenic pulverizer according to claim 1, characterized in that: The upper cover (4) and the crusher body (1) are sealed together by a sealing rubber ring. The inner wall of the top connection between the upper cover (4) and the crusher body (1) is surrounded by an installation eave (9). The outer periphery of the sealing cover (5) is provided with a connecting plate (10) that works with the installation eave (9). The installation eave (9) and the connecting plate (10) are provided with several holes, and locking bolts (11) are used to lock and fix them through these holes.

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