Applicable to crusher intelligent cold charging system

Abstract

The present invention belongs to the technical field of crusher assembly and application, and in particular relates to an intelligent cold installation system for crushers. The system comprises a freezing box and liquid nitrogen connected to the freezing box, and also comprises a controller. The freezing box is provided with a temperature sensor, and the temperature sensors are arranged at intervals along the long side of the freezing box. The freezing box is provided with a nitrogen chamber, and the nitrogen chamber is provided with an exhaust fan, and the exhaust fan is arranged at one end of the freezing box. The nitrogen chamber is also connected to an air pump, and the output end of the air pump is connected to a nitrogen nozzle. The present invention provides an intelligent cold installation system for crushers, which realizes one-button intelligent freezing by improving the structure of the existing freezing box and setting the freezing time and freezing temperature based on experience according to the type, size and material characteristics of the parts to be frozen. In addition, by improving the structure of the freezing box, it realizes multi-point injection, thereby effectively improving the freezing effect and ensuring the freezing quality.

Description

Technical Field

[0001] The invention belongs to the technical field of crusher assembly application, and in particular relates to an intelligent cold assembly system suitable for a crusher. Background Art

[0002] A cone crusher is a type of machine used for crushing raw materials in the metallurgical, construction, road construction, chemical, and silicate industries. With the continuous development of mining technology, cone crushers have been divided into several categories. These include spring cone crushers, mortar cone crushers, hydraulic cone crushers, and compound cone crushers. By model, they can be divided into conventional PY cone crushers, Simmons cone crushers, compound cone crushers, standard hydraulic cone crushers, single-cylinder hydraulic cone crushers, and multi-cylinder hydraulic cone crushers.

[0003] In existing multi-cylinder crusher assembly, for example, eccentric and horizontal shaft copper sleeves are assembled with interference fits and are cold-assembled. Multi-cylinder cone crushers feature several copper sleeves, including the eccentric sleeve, upper and lower sleeves of the movable cone, and horizontal shaft sleeve. These sleeves are typically cold-assembled with an interference fit to other components. To achieve this, they require refrigeration. However, refrigeration time varies depending on the crusher model and component size; for example, the eccentric sleeve and forging components require different refrigeration times. Furthermore, existing refrigeration equipment uses a "single-point injection" cooling input method, ignoring the impact of the large working chamber volume on temperature distribution. When low-temperature nitrogen enters the working chamber, forced convection occurs, leading to cooling losses along the way. This results in a significant temperature gradient within the large working chamber, from the nitrogen injection port to the exhaust outlet. This creates an uneven temperature distribution and, in turn, poor refrigeration performance. Summary of the Invention

[0004] Aiming at the technical problem of freezing accessories during the assembly process of existing multi-cylinder cone crushers, the present invention proposes an intelligent cold assembly system for crushers which has a reasonable design, a simple structure and can effectively and evenly freeze accessories.

[0005] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: the present invention provides an intelligent cold loading system for a crusher, comprising a freezing box and liquid nitrogen connected to the freezing box, and also comprising a controller, wherein a temperature sensor is provided in the freezing box, and the temperature sensors are arranged at intervals along the long side direction of the freezing box, a nitrogen-forming chamber is provided in the freezing box, an exhaust fan is provided on the nitrogen-forming chamber, and the exhaust fan is arranged at one end of the freezing box, the nitrogen-forming chamber is also connected to an air pump, and the output end of the air pump is connected to a nitrogen nozzle, and the nitrogen nozzles are arranged at intervals in the freezing box, the controller comprises a control panel and an operation panel, the operation panel is provided with a plurality of operation buttons for one-button control of the refrigeration time and refrigeration temperature according to the type, size and material characteristics of the parts to be frozen, an electromagnetic control valve is provided between the nitrogen nozzle and the air pump, and the control panel is electrically connected to the operation panel, the temperature sensor, the electromagnetic control valve, the exhaust fan and the air pump.

[0006] Preferably, a support box is provided in the freezing box, a nitrogen-generating chamber is provided at one end of the support box, a shaft placement groove is provided in the nitrogen-generating chamber, the shaft placement groove is horizontally arranged, the exhaust fan is arranged at the bottom of the shaft placement groove, and the shaft placement groove passes through the nitrogen-generating chamber and is arranged near one end of the support box.

[0007] Preferably, a copper sleeve bracket is provided on the top of the support box, the top surface of the copper sleeve bracket is arranged in an arc shape, the top of the copper sleeve bracket is provided with an arc groove, a nitrogen nozzle is provided in the arc groove, and the copper sleeve bracket is arranged on the support box at intervals along the long side direction of the support box.

[0008] Preferably, curved plates are provided on both sides of the support box, curved tubes are provided on the curved plates, and nitrogen nozzles are provided on the curved tubes.

[0009] Preferably, the central axis of the exhaust fan, the central axis of the shaft placement groove and the central axis of the copper sleeve bracket are coaxially arranged.

[0010] Preferably, the arc-shaped plate is provided with air guide slots arranged at intervals.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. The present invention provides an intelligent cold loading system for a crusher. By improving the structure of the existing freezing box and setting the freezing time and freezing temperature based on experience according to the type, size and material characteristics of the parts to be frozen, it can achieve one-button intelligent freezing. In addition, by improving the structure of the freezing box, it can achieve multi-point spraying, thereby effectively improving the freezing effect and ensuring the freezing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is a schematic diagram of the structure of the crusher intelligent cold charging system provided in Example 1;

[0015] Figure 2 The control principle diagram of the crusher intelligent cold charging system provided in Example 1;

[0016] Figure 3 A schematic diagram of the structure of the support box and nitrogen chamber provided in Example 1;

[0017] In the above figures, 1. Freezer; 2. Liquid nitrogen; 3. Controller; 31. Operation panel; 32. Temperature sensor; 4. Nitrogen chamber; 41. Exhaust fan; 42. Air pump; 43. Shaft placement slot; 5. Support box; 51. Guide wheel; 6. Copper sleeve bracket; 61. Arc groove; 7. Arc plate; 71. Air guide slot hole; 8. Arc tube; 9. Nitrogen nozzle. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Example 1, as Figures 1 to 3 As shown, this embodiment aims to provide a refrigeration device capable of intelligently freezing accessories that require cold installation for different models of multi-cylinder crushers. To this end, the present embodiment provides a system for intelligent cold installation for crushers, comprising a freezing chamber 1 and liquid nitrogen 2 connected to the freezing chamber 1. Because the parts to be frozen have an axis and are relatively long, in this embodiment, the freezing chamber 1 is arranged in a rectangular parallelepiped shape, and the liquid nitrogen 2 is used to supply liquid nitrogen 2 to the freezing chamber 1. The above structure is a common existing structure and is therefore not described in detail in this embodiment.

[0021] Considering that the reason for uneven freezing is the inaccurate control of temperature and injection point, in this embodiment, a corresponding controller 3 is also provided. At the same time, a temperature sensor 32 is provided in the freezer 1. Since the temperature changes in a step-like manner, different temperature ranges are formed. Therefore, in order to accurately obtain the temperature in the freezer 1, in this embodiment, the temperature sensors 32 are arranged at intervals along the long side direction of the freezer 1.

[0022] Considering that the freezing process of liquid nitrogen 2 is actually a heat exchange process, using liquid nitrogen 2 directly for freezing may directly cause damage to components. Therefore, a nitrogen chamber 4 is provided within the freezing chamber 1. Of course, a temperature sensor 32 is also provided within the freezing chamber 4. To achieve freezing, an exhaust fan 41 is provided within the freezing chamber 4. The exhaust fan 41 is located at the outlet of the freezing chamber 4. In this way, vaporized nitrogen is extracted from the nitrogen chamber 4 and blown from one end of the freezing chamber 1 to the other end. For this purpose, the exhaust fan 41 is located at one end of the freezing chamber 1.

[0023] Considering that the process in which the exhaust fan 41 blows nitrogen from one end of the freezing chamber 1 to the other end is a heat exchange process of the nitrogen, its temperature will decrease. Therefore, in order to ensure the uniformity of the overall freezing, in this embodiment, the nitrogen chamber 4 is further connected to the air pump 42, and the output end of the air pump 42 is connected to the nitrogen nozzle 9. The nitrogen nozzle 9 is arranged at intervals in the freezing chamber 1. At the same time, an electromagnetic control valve is provided between the nitrogen nozzle 9 and the air pump 42. It should be noted that each nitrogen nozzle 9 is provided with an electromagnetic control valve, which is an electromagnetic flow control valve for adjusting the nitrogen injection amount of each nitrogen nozzle 9, thereby achieving temperature consistency in the overall environment.

[0024] Considering the convenience of operation, in this embodiment, the controller 3 includes a control board and an operation panel 31. The operation panel 31 is provided with a number of operation buttons for one-touch control of the refrigeration time and refrigeration temperature according to the type, size, and material characteristics of the frozen items. Of course, the control board is provided with a PID controller with a built-in relevant program. Its control is mainly based on experience to set the one-touch program. For example, the aperture, wall thickness, and length of the eccentric copper sleeve are used to determine the refrigeration time and refrigeration temperature based on experience. In this way, the experience is converted into the program, facilitating accurate control. To this end, the control board is electrically connected to the operation panel 31, the temperature sensor 32, the electromagnetic control valve, the exhaust fan 41, and the air pump 42.

[0025] In this way, the control panel displays the temperature information transmitted by the temperature sensor 32 on the display screen, and the operator selects the corresponding button according to the part to be frozen to control the magnetic control valve, the exhaust fan 41 and the air pump 42, thereby achieving the purpose of intelligent control.

[0026] Considering that the components that require cold installation are primarily pipes or shafts, and that shafts are solid and thicker than pipes, a tray 5 is provided within the freezer 1 to achieve rapid cold termination. A nitrogen chamber 4 is provided at one end of the tray 5. The nitrogen chamber 4 is box-shaped and includes a shaft placement slot 43 within the tray 5. The shaft placement slot 43 is used to accommodate the plug-in end of the shaft, while the remaining portion rests on the tray 5. To this end, the shaft placement slot 43 is horizontally disposed, and an exhaust fan 41 is disposed at the bottom of the shaft placement slot 43, which extends through the nitrogen chamber 4 near the end of the tray 5. This arrangement is primarily designed for two reasons: first, as liquid nitrogen 2 vaporizes, it absorbs a significant amount of heat, thereby reducing the ambient temperature within the shaft placement slot 43. Furthermore, by placing the tray 5 directly near the exhaust fan 41, where the nitrogen gas temperature is at its lowest, the shaft can be quickly frozen, reducing freezing costs.

[0027] In order to achieve the purpose of uniform cooling, in this embodiment, a copper sleeve bracket 6 is provided on the top of the tray box 5. The top surface of the copper sleeve bracket 6 is arranged in an arc shape. The arc-shaped top surface can fit with the copper sleeve to ensure the stability of the copper sleeve fixation. Considering that the contact part between the top surface and the copper sleeve may affect the freezing, an arc groove 61 is provided on the top of the copper sleeve bracket 6, and a nitrogen nozzle 9 is provided in the arc groove 61. In this way, the contact area between the copper sleeve and the copper sleeve bracket 6 is reduced. At the same time, the cooling is further improved by directly injecting nitrogen.

[0028] Considering the limited length of the copper sleeve, in order to place more copper sleeves on the support box 5, copper sleeve brackets 6 are arranged on the support box 5 at intervals along the long side direction of the support box 5. It should be noted that in addition to supporting, the support box 5 also has the function of placing pipelines.

[0029] To further improve the freezing effect and freezing uniformity, in this embodiment, curved plates 7 are further provided on both sides of the tray 5. Curved tubes 8 are provided on the curved plates 7, and nitrogen nozzles 9 are provided on the curved tubes 8. This achieves multi-angle blowing and reduces temperature differences. At the same time, the air blown by the exhaust fan 41 freezes the copper sleeve from the inside out, while the nitrogen nozzles 9 freeze from the outside in, thereby ensuring freezing uniformity. The temperature difference of the nitrogen is mainly compensated by the nitrogen flow rate.

[0030] Considering the issue of nitrogen gas being depleted during the blowing process by the exhaust fan 41, and in order to minimize consumption during the blowing process, in this embodiment, the central axis of the exhaust fan 41, the central axis of the shaft placement slot 43, and the central axis of the copper sleeve bracket 6 are coaxially arranged. This allows the nitrogen gas to reach the other end as directly as possible, ensuring internal refrigeration.

[0031] Considering that nitrogen nozzles 9 spray nitrogen from the outside of the copper sleeves, and the copper sleeves are spaced apart, the wind generated by the sprayed nitrogen will enter between the copper sleeves due to the obstruction of the curved plate 7, thereby affecting the blowing effect of the exhaust fan 41. Therefore, spaced air guide slots 71 are provided on the curved plate 7. The air guide slots 71 are used to disperse the wind force, thereby minimizing its impact on the blowing of the exhaust fan 41. At the same time, the air guide slots 71 also help to make the temperature throughout the box more uniform, thereby ensuring the freezing effect.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An intelligent cold charging system for a crusher, comprising a freezing box and liquid nitrogen connected to the freezing box, characterized in that: The freezer further comprises a controller, wherein a temperature sensor is provided in the freezer, and the temperature sensors are arranged at intervals along the long side direction of the freezer; a nitrogen-forming chamber is provided in the freezer, and an exhaust fan is provided on the nitrogen-forming chamber, and the exhaust fan is provided at one end of the freezer; the nitrogen-forming chamber is also connected to an air pump, and the output end of the air pump is connected to a nitrogen nozzle, and the nitrogen nozzles are arranged at intervals in the freezer; the controller comprises a control panel and an operation panel, and the operation panel is provided with a plurality of operation buttons for one-touch control of the refrigeration time and the refrigeration temperature according to the type, size and material characteristics of the parts to be frozen; an electromagnetic control valve is provided between the nitrogen nozzle and the air pump; the control panel is connected to the operation panel, the temperature sensor, and the electromagnetic control valve. The magnetic control valve, the exhaust fan and the air pump are electrically connected. A support box is provided in the freezing box. A nitrogen chamber is provided at one end of the support box. A shaft placement slot is provided in the nitrogen chamber. The shaft placement slot is arranged horizontally. The exhaust fan is arranged at the bottom of the shaft placement slot. The shaft placement slot passes through the nitrogen chamber and is arranged near one end of the support box. A copper sleeve bracket is provided on the top of the support box. The top surface of the copper sleeve bracket is arranged in an arc shape. An arc groove is provided on the top of the copper sleeve bracket. A nitrogen nozzle is provided in the arc groove. The copper sleeve bracket is arranged on the support box at intervals along the long side direction of the support box. Arc plates are also provided on both sides of the support box. Arc tubes are provided on the arc plates, and nitrogen nozzles are provided on the arc tubes. The arc-shaped plate is provided with air guide slots arranged at intervals.

2. The intelligent cold charging system for crushers according to claim 1 is characterized in that: The central axis of the exhaust fan, the central axis of the shaft placement groove and the central axis of the copper sleeve bracket are coaxially arranged.

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