Device capable of synchronously reacting and grinding

Abstract

The invention discloses a device capable of synchronously reacting and grinding, which belongs to the technical field of reaction equipment and comprises a reaction cylinder, a grinding rotor is arranged in the reaction cylinder, a grinding reaction cavity is formed between the grinding rotor and the reaction cylinder, a grinding medium is filled in the grinding reaction cavity, the grinding rotor is fixedly connected with a rotating shaft, and the rotating shaft is connected with a driving device. The rotating shaft is hollow and is provided with a shaft cavity, the upper part of the grinding rotor is provided with separation groove holes distributed along the circumference, the separation groove holes are communicated with the shaft cavity, and the shaft cavity is communicated with the discharging pipe. The device can synchronously react in the grinding process, so that the reaction time is shortened, and the reaction efficiency is improved; gas generated in the reaction process can be effectively released or collected, so that high pressure of the cavity is avoided; through grinding of the grinding medium, the reaction efficiency and the purity requirement are improved; the production line cost and the environmental pollution are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of reaction equipment, in particular to a device capable of synchronous reaction and grinding. Background Art

[0002] Generally speaking, when there are solids in the reaction raw materials and the solid particles are relatively large, during the reaction process, the solvent needs to be constantly in contact with the outer surface of the solid. As the reaction proceeds, the solid particles continue to shrink and new substances are continuously generated. Therefore, in order to improve the reaction efficiency, the solid is usually ground first to increase the contact area of ​​the reaction and then contact with the solvent after reaching the optimal particle size. However, due to the influence of the current reaction device, it is necessary to use a grinding device to grind and sieve the solid raw materials before adding them to the reaction device. After reaching the standard particle size, they are added to the reaction device to react with the solvent. Not only do two sets of equipment need to be purchased, which increases the cost, but also the grinding and sieving of the solid raw materials also takes some time, which results in a long production line time, thus affecting production efficiency. A large amount of sewage will also be generated in the grinding process, and waste materials that are not completely reacted due to some particle sizes not meeting the standards will also be generated in the reaction process. These sewage and waste materials pollute the environment greatly, and their purification treatment requires a lot of cost. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that the existing grinding and reaction are carried out separately, resulting in low production efficiency and the purification of a large amount of sewage and waste materials will also increase production costs. A device that can react and grind simultaneously is proposed, which can react simultaneously during the grinding process, shorten the reaction time, improve the reaction efficiency, reduce the amount of grinding sewage and waste materials caused by incomplete reaction, and reduce the purification cost.

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: a device capable of synchronous reaction and grinding, comprising a reaction cylinder, a feed port is arranged at the bottom of the reaction cylinder, the feed port is connected to the feed pipe, a pressure relief port and a first exhaust port are arranged at the top of the reaction cylinder, the pressure relief port is connected to the pressure relief valve, the first exhaust port is connected to the first exhaust pipe, a grinding rotor is arranged in the reaction cylinder, a grinding reaction chamber is formed between the grinding rotor and the reaction cylinder, the feed port is communicated with the grinding reaction chamber, the grinding reaction chamber is filled with grinding media, one end of the grinding rotor is fixedly connected to a rotating shaft, the rotating shaft is hollow and has an axial cavity, the grinding rotor is provided with separation slots distributed along the circumference at the upper part, the separation slots are communicated with the axial cavity, the rotating shaft is connected to a driving device, and the axial cavity is communicated with a discharge pipe.

[0005] As a further description of the above technical solution, a connector is provided at the entrance of the separation slot, and a separation device is detachably installed in the connector. Different separation devices can be installed or replaced according to actual needs to meet different working conditions.

[0006] As an implementation of the above technical solution, the top center of the reaction tube has an opening, the rotating shaft is inserted from the opening, a pressing device is provided between the opening and the rotating shaft, a buffer groove is provided on the pressing device, a second exhaust port is provided on the top of the buffer groove, the second exhaust port is connected to the second exhaust pipe, and the buffer groove is communicated with the grinding reaction chamber through the pressing device. It is suitable for working conditions where non-toxic gas is generated, and a design without mechanical seal is adopted to reduce the failure points, and at the same time, the gas pressure in the grinding reaction chamber is reduced, and the service life of the device is improved. A buffer groove is provided on the top of the reaction tube, and the buffer groove is communicated with the grinding reaction chamber through the pressing device, which solves the problem of splashing and spraying of reaction liquid.

[0007] As an implementation of the above technical solution, the top center of the reaction cylinder has an opening, the rotating shaft is inserted from the opening, a mechanical sealing device is provided between the opening and the rotating shaft, and the pressure relief valve and the first exhaust pipe are both connected to a gas recovery and processing device. It is suitable for working conditions where toxic gases are generated and can prevent toxic gas leakage.

[0008] Furthermore, a feed pump and a one-way valve are provided on the feed pipe, a temperature monitor and a discharge pump are provided on the discharge pipe, and a liquid level monitor and a pressure monitor are provided in the grinding reaction chamber, wherein the liquid level monitor is located between the top of the separation slot and the top of the grinding rotor, wherein the drive device, liquid level monitor, pressure monitor, pressure relief valve, feed pump and discharge pump are all connected to the controller to realize automatic control. When the temperature monitor detects that the temperature is too high, the feed pump is controlled to increase the feed flow rate until the temperature drops to a suitable temperature to maintain a constant temperature; when the liquid level monitor detects that the liquid level in the grinding reaction chamber is too high, the feed pump is controlled by the controller to reduce the feed flow rate or stop feeding, and the discharge pump increases the discharge flow rate; when the liquid level is too low, the feed pump is controlled to increase the feed flow rate, and the discharge pump is controlled to reduce the discharge flow rate or stop discharging to maintain a constant liquid level. When the pressure monitor detects that the pressure in the grinding reaction chamber is too high, the controller controls the pressure relief valve to open and reduce the feed flow of the feed pump or stop feeding, the drive device stops driving, and the discharge pump increases the discharge flow, thereby reducing the pressure.

[0009] Furthermore, the reaction cylinder comprises a grinding inner cylinder and a heat-insulating outer cylinder, a temperature-controlling interlayer is arranged between the grinding inner cylinder and the heat-insulating outer cylinder, and the temperature-controlling interlayer is electrically connected to a temperature monitor, so as to maintain a constant temperature in the grinding reaction chamber.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) The device capable of simultaneous reaction and grinding of the present invention can be applied to two working conditions by replacing some accessories, one of which is applicable to the generation of non-toxic gas during the reaction process, and the other is applicable to the generation of toxic gas during the reaction process: in the design of the generation of non-toxic gas during the reaction process, a material pressing device is provided at the opening of the reaction cylinder, and a design without mechanical seal is adopted, thereby reducing the failure points and also reducing the gas pressure in the grinding reaction chamber, thereby increasing the service life of the device, and a buffer tank is provided at the top of the reaction cylinder, and the buffer tank is connected to the grinding reaction chamber through the material pressing device, thereby solving the problem of splashing and external spraying of the reaction liquid; in the design of the generation of toxic gas during the reaction process, a mechanical sealing device is provided at the opening of the reaction cylinder, and the exhaust pipe and the pressure relief valve of the grinding reaction chamber are both connected to the gas recovery and processing device, thereby eliminating the risk of leakage of toxic gas.

[0012] (2) The grinding reaction chamber is filled with grinding media, so that the solid raw materials in the solvent are continuously ground and sheared with the grinding media, thereby improving the grinding efficiency.

[0013] (3) A temperature monitor, a liquid level monitor, and a pressure monitor are provided and are interlocked with the pressure relief valve, the feed pump, and the discharge pump through a controller. By controlling the opening and closing of the pressure relief valve and the flow rates of the feed pump and the discharge pump, the temperature, liquid level, and pressure in the grinding reaction chamber are adjusted to maintain a constant temperature in the grinding reaction chamber, and effectively prevent dangers caused by excessive pressure or material leakage caused by excessive liquid level.

[0014] (4) A temperature control interlayer is set outside the grinding reaction chamber to achieve cooling or heating, and together with the temperature monitor, the temperature inside the grinding reaction chamber can be controlled to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the device capable of simultaneous reaction and grinding according to Example 1.

[0016] Figure 2 It is a cross-sectional view of the grinding rotor and the rotating shaft of the first embodiment.

[0017] Figure 3 It is a schematic diagram of the structure of the device capable of simultaneous reaction and grinding according to the second embodiment.

[0018] Legend:

[0019] 1-feed pump; 2-feed pipe; 3-check valve; 4-grinding inner cylinder; 5-temperature control interlayer; 6-insulation outer cylinder; 7-reaction cylinder; 8-grinding reaction chamber; 9-grinding medium; 10-grinding rotor; 11-pressure monitor; 12-first exhaust pipe; 13-buffer tank; 14-second exhaust pipe; 15-rotating shaft; 16-shaft cavity; 17-driving device; 18-discharge pipe; 19-temperature monitor; 20-discharge pump; 21-pressure relief valve; 22-pressing device; 23-liquid level monitor; 24-separation slot hole; 25-connector; 26-separation device; 27-mechanical sealing device. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Embodiment 1

[0022] This embodiment provides a device capable of simultaneous reaction and grinding, such as Figure 1 , Figure 2 As shown, it includes a reaction cylinder 7, which is a double-layer structure, with a grinding inner cylinder 4 and a heat-insulating outer cylinder 6, a temperature-controlling interlayer 5 is arranged between the grinding inner cylinder 4 and the heat-insulating outer cylinder 6, a feed port is arranged at the bottom of the reaction cylinder 7, the feed port is connected to a feed pipe 2, the feed pipe 2 is connected to a feed pump 1, the material is fed from the feed pump 1 through the bottom of the reaction cylinder 7, and a one-way valve 3 is arranged on the feed pipe 2 to ensure that the material in the reaction cylinder 7 will not be backflowed into the feed pump 1, a pressure relief port and a first exhaust port are arranged at the top of the reaction cylinder 7, the pressure relief port is connected to a pressure relief valve 21, the first exhaust port is connected to a first exhaust pipe 12, and the outlets of the pressure relief valve 21 and the first exhaust pipe 12 are vented for pressure relief and direct discharge of non-toxic gas generated by the reaction;

[0023] A grinding rotor 10 is arranged in the reaction barrel 7, and a grinding reaction chamber 8 is formed between the grinding rotor 10 and the reaction barrel 7. The feed port is communicated with the grinding reaction chamber 8, and a grinding medium 9 is arranged in the grinding reaction chamber 8. The grinding medium 9 collides and rubs against each other under the action of the grinding rotor 10, and the solid particles in the reaction liquid are squeezed and sheared, so as to achieve the requirement of finer grinding; one end of the grinding rotor 10 is fixedly connected to a rotating shaft 15, and the rotating shaft 15 is connected to a driving device 17. As the driving device 17 runs, the rotating shaft 15 drives the grinding rotor The rotor 10 rotates together to grind and crush the solid particles. The rotating shaft 15 is hollow and has an axial cavity 16. The upper part of the grinding rotor 10 is provided with narrow separation slots 24 distributed along the circumference. The separation slots 24 are provided with L-shaped connectors 25. The connectors 25 can be inserted with a separation device 26. The separation slots 24 are communicated with the axial cavity 16, and the axial cavity 16 is connected to the discharge pipe 18. The discharge pipe 18 is provided with a temperature monitor 19 and a discharge pump 20. The temperature monitor 19 is electrically connected to the temperature control interlayer 5 to maintain a constant temperature in the grinding reaction chamber 8. During the grinding reaction process, the solvent and solid particles in the reaction liquid react continuously to form a reaction slurry. The reaction slurry enters the shaft cavity 16 through the narrow separation slot 24 on the grinding rotor 10. Under the action of the discharge pump 20, the reaction slurry enters the discharge pipe 18. The temperature of the reaction slurry is monitored by the temperature monitor 19, and the reaction slurry is pumped out by the discharge pump 20 to the next process or into the buffer tank for temporary storage. The slurry in the buffer tank can also be sent to the reaction cylinder 7 by the feed pump 1 for further grinding reaction according to actual conditions.

[0024] A pressure monitor 11 and a liquid level monitor 23 are provided in the grinding reaction chamber 8. The pressure monitor 11 is electrically connected to the feed pump 1, the discharge pump 20 and the pressure relief valve 21 through a controller to ensure that the pressure in the grinding reaction chamber 8 is not too high to cause danger. The liquid level monitor 23 is located between the top of the separation slot 24 and the top of the grinding rotor 10. The liquid level monitor 23 is electrically connected to the feed pump 1 and the discharge pump 20 through a controller to prevent the reaction slurry from filling the entire grinding reaction chamber 8 and to ensure that there is a cavity in the upper part of the grinding reaction chamber. The cavity is used to collect the non-toxic gas generated by the reaction, and the non-toxic gas can be directly discharged through the exhaust port and the exhaust pipe 12.

[0025] The working condition is suitable for generating non-toxic gas, the top center of the reaction cylinder 7 has an opening, the rotating shaft 15 is inserted from the opening, a pressing device 22 is provided between the opening and the rotating shaft 15, a buffer groove 13 is provided above the pressing device 22, a second exhaust port is provided at the top of the buffer groove 13, the second exhaust port is connected to the second exhaust pipe 14, and the buffer groove 13 is communicated with the grinding reaction chamber 8 through the pressing device 22. The function of the pressing device 22 is to press down the material splashed by the high-speed rotation of the rotating shaft 15 to prevent the material from splashing out of the grinding reaction chamber 8 when there is too much material, and it also has a certain exhaust function. The buffer groove 13 is provided on the outside of the pressing device 15 as a second layer of protection. Under the working condition that the generated gas is non-toxic gas, it plays a role in replacing the mechanical seal and reducing the failure point.

[0026] Embodiment 2:

[0027] The difference between the second embodiment and the first embodiment is that: the mechanical sealing device 27 is provided at the opening of the reaction tube 7 of the second embodiment to replace the material pressing device 22, the buffer tank 13 is not provided, and the first exhaust pipe 12 and the pressure relief valve 21 are connected to the gas recovery and processing device. Figure 3 As shown, the toxic gas generated by the reaction in the grinding reaction chamber 8 is discharged to the gas recovery and treatment device through the first exhaust pipe 12 or the pressure relief valve 21 for unified purification treatment to prevent the toxic gas from leaking and polluting the environment. The mechanical sealing device 27 can effectively prevent the toxic gas generated by the reaction in the grinding reaction chamber 8 from leaking. At the same time, a pressure monitor 11 is arranged in the grinding reaction chamber 8, and a pressure relief valve 21 is arranged on the reaction cylinder 7 to monitor the pressure in the grinding reaction chamber 8 in real time and ensure that the pressure in the grinding reaction chamber 8 does not exceed the critical value, thereby ensuring the safety of the equipment. The pressure relief valve 21 and the first exhaust pipe 12 are both connected to the gas recovery and purification device to ensure that the toxic gas will not leak.

[0028] The device capable of simultaneous reaction and grinding of the present invention can react simultaneously during the grinding process, thereby reducing reaction time and improving reaction efficiency; the reaction efficiency and purity requirements can be improved through grinding with grinding media; the gas generated during the reaction can be effectively released or collected to avoid high pressure in the cavity and ensure equipment safety; the production line cost can be reduced and environmental pollution can be reduced.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. A person skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the present invention.

Claims

1. A device capable of simultaneous reaction and grinding, comprising a reaction tube (7), a feed port is arranged at the bottom of the reaction tube (7), the feed port is connected to a feed pipe (2), a pressure relief port and a first exhaust port are arranged at the top of the reaction tube (7), the pressure relief port is connected to a pressure relief valve (21), and the first exhaust port is connected to a first exhaust pipe (12), characterized in that: A grinding rotor (10) is arranged inside the reaction barrel (7), a grinding reaction chamber (8) is formed between the grinding rotor (10) and the reaction barrel (7), the feed port is communicated with the grinding reaction chamber (8), a grinding medium (9) is contained in the grinding reaction chamber (8), one end of the grinding rotor (10) is fixedly connected with a rotating shaft (15), the rotating shaft (15) is hollow and has an axial cavity (16), the upper part of the grinding rotor (10) is provided with separation slots (24) distributed along the circumference, the separation slots (24) are communicated with the axial cavity (16), the rotating shaft (15) is connected with a driving device (17), and the axial cavity (16) is communicated with a discharge pipe (18).

2. The device capable of simultaneous reaction and grinding as claimed in claim 1, characterized in that: A plug-in connector (25) is provided at the entrance of the separation slot hole (24), and a separation device (26) is detachably installed in the plug-in connector (25).

3. The device capable of simultaneous reaction and grinding as claimed in claim 1, characterized in that: The top center of the reaction cylinder (7) has an opening, the rotating shaft (15) is inserted from the opening, a material pressing device (22) is provided between the opening and the rotating shaft (15), a buffer groove (13) is provided on the material pressing device (22), a second exhaust port is provided at the top of the buffer groove (13), the second exhaust port is connected to the second exhaust pipe (14), and the buffer groove (13) is communicated with the grinding reaction chamber (8) through the material pressing device (22).

4. The device capable of simultaneous reaction and grinding as claimed in claim 1, characterized in that: The top center of the reaction cylinder (7) has an opening, the rotating shaft (15) is inserted into the opening, and a mechanical sealing device (27) is provided between the opening and the rotating shaft (15).

5. The device capable of simultaneous reaction and grinding as claimed in claim 4, characterized in that: The pressure relief valve (21) and the first exhaust pipe (12) are both connected to a gas recovery and processing device.

6. The device capable of simultaneous reaction and grinding as claimed in claim 3 or 5, characterized in that: A feed pump (1) and a one-way valve (3) are arranged on the feed pipe (2).

7. The device capable of simultaneous reaction and grinding as claimed in claim 6, characterized in that: The discharge pipe (18) is provided with a temperature monitor (19) and a discharge pump (20).

8. The device capable of simultaneous reaction and grinding as claimed in claim 7, characterized in that: A liquid level monitor (23) and a pressure monitor (11) are arranged in the grinding reaction chamber (8), wherein the liquid level monitor (23) is located between the top of the separation slot hole (24) and the top of the grinding rotor (10).

9. The device capable of simultaneous reaction and grinding as claimed in claim 8, characterized in that: The driving device (17), the heating device, the temperature monitor (19), the liquid level monitor (23), the pressure monitor (11), the pressure relief valve (21), the feed pump (1) and the discharge pump (20) are all connected to the controller.

10. The device capable of simultaneous reaction and grinding as claimed in claim 3 or 5, characterized in that: The reaction cylinder (7) comprises a grinding inner cylinder (4) and a heat-insulating outer cylinder (6), a temperature-controlling interlayer (5) is arranged between the grinding inner cylinder (4) and the heat-insulating outer cylinder (6), and the temperature-controlling interlayer (5) is electrically connected to a temperature monitor (19).

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