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CN-121988435-A - Compression device and steam circulation type crushing system

CN121988435ACN 121988435 ACN121988435 ACN 121988435ACN-121988435-A

Abstract

A compression device and a steam circulation type crushing system belong to the technical field of steam crushing, and comprise a compression cylinder, wherein a driving piston, a driven piston and a piston rod are arranged in the compression cylinder, the piston rod is arranged in the compression cylinder in a reciprocating mode along the axial direction, the driving piston is fixedly arranged in the middle section of the piston rod, a baffle is arranged at the front end of the piston rod, the front section of the piston rod penetrates through the driven piston, a first compression cavity is formed between the driving piston and the rear end of the compression cylinder, a second compression cavity is formed between the driving piston and the driven piston, a first pressure release valve is arranged on the driving piston, an exhaust pipe is arranged at the front end of the driven piston, a second pressure release valve is arranged on the driven piston, a nozzle is arranged on the compression cylinder in a penetrating mode, and an air inlet one-way valve is arranged at the rear end of the compression cylinder and used for supplying air to the first compression cavity. The steam circulation type crushing system comprises a steam generator, a steam crusher, a dust remover and the compression device. The scheme not only can recycle tail steam, but also can effectively reduce the operation load of the steam generator and reduce the energy consumption.

Inventors

  • ZHANG QIAOMIAN
  • WANG BIAO
  • YANG QIAN
  • ZHANG XIAORONG

Assignees

  • 绵阳流能粉体设备有限公司

Dates

Publication Date
20260508
Application Date
20260403

Claims (10)

  1. 1. The compression device is characterized by comprising a compression cylinder (1), wherein the front end of the compression cylinder is of an open structure, and the rear end of the compression cylinder is of a closed structure, a driving piston (2), a driven piston (3) and a piston rod (4) are coaxially arranged in the compression cylinder (1), and the piston rod (4) is arranged in a reciprocating manner along the axial direction; The rear end of the piston rod (4) passes through the rear end of the compression cylinder (1), the driving piston (2) is fixedly arranged at the middle section of the piston rod (4), the front end of the piston rod (4) is provided with a baffle (41), the front section of the piston rod (4) passes through the driven piston (3), and the driven piston (3) is positioned between the baffle (41) and the driving piston (2); a first compression cavity is formed between the driving piston (2) and the rear end of the compression cylinder (1), and a second compression cavity is formed between the driving piston (2) and the driven piston (3); The driving piston (2) is provided with a first pressure relief valve (21) for exhausting to the second compression cavity, the front end of the driven piston (3) is provided with an exhaust pipe (31), the driven piston (3) is provided with a second pressure relief valve (32) for communicating the exhaust pipe (31) with the second compression cavity, and the release pressure of the first pressure relief valve (21) is smaller than that of the second pressure relief valve (32); the compression cylinder (1) is provided with a nozzle (5) in a penetrating way and is used for injecting liquid into the compression cylinder (1); the inside of the front end of the compression cylinder (1) is provided with a blocking piece (11) for limiting the movement of the driven piston (3) to the front end of the compression cylinder (1), and the rear end of the compression cylinder (1) is provided with an air inlet one-way valve (12) for supplying air to the first compression cavity.
  2. 2. A compression device according to claim 1, characterized in that the first compression chamber and the second compression chamber are provided with nozzles (5) for injecting liquid into the first compression chamber and the second compressor, respectively, during compression.
  3. 3. A compression device according to claim 1, characterized in that the maximum volume of the second compression chamber is the same as the volume of the first compression chamber at that time when the pressure inside the first compression chamber is equal to the relief pressure of the first relief valve (21).
  4. 4. A compression device according to claim 1, characterized in that the blocking member (11) is of a threaded sleeve construction, the outer part of which is screwed to the inner wall of the compression cylinder (1), and the exhaust pipe (31) and the baffle (41) are located in the region of the inner bore of the threaded sleeve.
  5. 5. A compression device according to claim 1, characterized in that the nozzle (5) is an atomizing nozzle structure.
  6. 6. A compression device according to claim 1, characterized in that the piston rod (4) is driven by a motor, which is connected to the piston rod (4) by means of a crank-link mechanism.
  7. 7. A steam circulation type crushing system is characterized by comprising a steam generator, a steam crusher, a dust remover and a compression device according to any one of claims 1 to 6, wherein an exhaust pipe (31) is connected with the steam crusher through a pipeline, the steam crusher is connected with the dust remover, the dust remover is used for separating crushed materials from steam to form powder and tail steam, and the tail steam is connected with the compression device through an air inlet check valve (12) after being combined with the steam generated by the steam generator.
  8. 8. The steam cycle type pulverizing system of claim 7, wherein the dust remover is connected with a steam tank and a product collector, the steam tank is used for stabilizing and buffering tail steam, a three-way joint (13) is arranged at the outer end of the air inlet one-way valve (12), isomorphic pipelines of the steam tank and the steam generator are respectively connected with other two ports of the three-way joint (13), and the product collector is used for collecting powder.
  9. 9. The steam cycle type pulverizing system of claim 7, wherein a heater is provided between the compression device and the steam pulverizer.
  10. 10. The steam cycle type pulverizing system of claim 9, wherein a surge tank is provided between the compression device and the heater.

Description

Compression device and steam circulation type crushing system Technical Field The invention belongs to the technical field of steam crushing, and particularly relates to a compression device and a steam circulation type crushing system. Background The method of pulverizing the material particles by air flow is a physical pulverizing method for obtaining the minimum granularity by the current full-dry pulverizing method, and the method is widely used in industrial production. The steam pulverizer uses steam as a power medium to achieve material pulverization, the pulverizing strength of the steam pulverizer can reach 2-5 times that of the traditional air pulverization, and the processed materials are finer, so that the development of a powder process is strongly promoted. However, the traditional steam mill has obvious defects, because the adopted steam is heated and pressurized by a boiler to produce high-pressure superheated steam, and then the high-pressure superheated steam is used for material crushing, in the whole crushing production process, the superheated state of the steam is required to be maintained in order to ensure the whole process to be in a dry state, and the crushed tail steam is still in a normal-pressure superheated state of 110-120 ℃. At present, most of tail steam is directly emptied and not recovered, the residual heat contained in the tail steam cannot be effectively utilized, a large amount of energy is wasted, in order to ensure the steam pressure during crushing, the boiler needs to be kept in high-load operation for a long time, and finally the energy utilization rate of the steam crushing mill is low. Disclosure of Invention In order to solve the defects in the prior art, the invention provides the compression device and the steam circulation type crushing system, which not only recycle tail steam, but also utilize cooling medium of the compression device to assist in generating steam, thereby effectively reducing the operation load of a steam generator and reducing energy consumption. In order to achieve the object of the invention, the following scheme is adopted: the compression device comprises a compression cylinder, a driving piston, a driven piston and a piston rod, wherein the front end of the compression cylinder is of an open structure, and the rear end of the compression cylinder is of a closed structure; The rear end of the piston rod passes through the rear end of the compression cylinder, the driving piston is fixedly arranged at the middle section of the piston rod, the front end of the piston rod is provided with a baffle, the front section of the piston rod passes through the driven piston, and the driven piston is positioned between the baffle and the driving piston; a first compression cavity is formed between the driving piston and the rear end of the compression cylinder, and a second compression cavity is formed between the driving piston and the driven piston; The driving piston is provided with a first pressure relief valve for exhausting gas to the second compression cavity, the front end of the driven piston is provided with an exhaust pipe, the driven piston is provided with a second pressure relief valve for communicating the exhaust pipe with the second compression cavity, and the release pressure of the first pressure relief valve is smaller than that of the second pressure relief valve; The compression cylinder is provided with a nozzle in a penetrating way and is used for spraying liquid into the compression cylinder; The front end of the compression cylinder is internally provided with a blocking piece for limiting the movement of the driven piston to the front end of the compression cylinder, and the rear end of the compression cylinder is provided with an air inlet one-way valve for supplying air to the first compression cavity. The steam circulation type crushing system comprises a steam generator, a steam crusher, a dust remover and the compression device, wherein the exhaust pipe is connected with the steam crusher through a pipeline, the steam crusher is connected with the dust remover, the dust remover is used for separating crushed materials from steam to form powder and tail steam, and the tail steam is combined with the steam generated by the steam generator and then is connected with the compression device through an air inlet one-way valve. The invention has the beneficial effects that: 1. The compression device realizes continuous two-stage compression, not only contributes to improving the crushing pressure of steam, but also contributes to further improving the temperature of the steam due to high pressure, so that on one hand, the crushing effect can be ensured, and on the other hand, liquid can be vaporized by means of high temperature to form a new steam source, thereby reducing the energy consumption of a steam generator while compressing the steam; 2. the steam circulation type crushing system effectively realizes the circula