Wet-type agitator mill barrel protection structure

Abstract

The utility model belongs to the technical field of protection structure, specifically is a kind of wet process stirring mill barrel protection structure, including outer tube, and the interlayer formed between outer tube and barrel body, the top side of outer tube is equipped with annular pipe, the bottom side of annular pipe is equidistantly connected with six connecting pipes, and the bottom end of connecting pipe is equidistantly provided with four groups of two number of air outlet, and the top end outside of outer tube is connected with exhaust pipe, and the input end of air pump is connected with air inlet pipe, and the output end of air pump is connected with conveying pipe;During stirring process, grinding heat is transferred to barrel body wall surface, cooling water is injected into interlayer after water inlet pipe, air pump extracts external nitrogen, cooling water is injected into cooling water from air outlet through annular pipe and connecting pipe, nitrogen bubble rises and pushes cooling water to form dynamic circulation in interlayer, breaks static cooling limit, improves the heat exchange efficiency of cooling water and barrel body, quickly takes away barrel body wall surface heat, avoids barrel body deformation and abrasion due to high temperature, to enhance the protection of barrel body.

Description

Technical Field

[0001] This utility model relates to the field of protective structure technology, specifically a protective structure for the cylinder of a wet stirred mill. Background Technology

[0002] A wet stirred mill is a device that uses mechanical stirring to cause the grinding media and materials to impact, shear, and grind in a liquid medium, thereby achieving ultrafine grinding or uniform mixing of materials. During the grinding process of the bearing balls, the friction between the grinding media, materials, and the cylinder generates heat. If heat is not dissipated in time, the cylinder may overheat and deform locally. Therefore, a protective structure is required.

[0003] An existing wet stirred mill cylinder protection structure consists of an inner cylinder and an outer cylinder with an interlayer in between. Cooling water is introduced into the interlayer. During mill operation, the cooling water carries away the heat generated during the grinding process, preventing the cylinder from deforming or being damaged due to overheating. It also prevents the material from undergoing property changes due to high temperatures, thus achieving protection for the cylinder.

[0004] However, the above-mentioned protective structure still has some problems. In practical applications, the cooling water is static in the jacket and cannot remove the heat generated during the grinding process in time, which leads to thermal fatigue and reduced strength of the cylinder metal, and cracks in weak places such as welds or pipes of the cylinder, thereby reducing the protective effect on the cylinder. Therefore, a protective structure for the cylinder of a wet stirred mill is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a protective structure for the cylinder of a wet stirred mill.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A protective structure for the cylinder of a wet stirred mill, comprising a cylinder body, an outer cylinder installed on the outer side of the cylinder body, a sandwich layer formed between the outer cylinder and the cylinder body, an annular pipe installed on the top side of the outer cylinder, six connecting pipes equidistantly connected to the bottom side of the annular pipe, the bottom end of each connecting pipe extending to the bottom end of the sandwich layer, four sets of two air outlets equidistantly opened at the bottom end of each connecting pipe, an exhaust pipe connected to the outer side of the top of the outer cylinder, a support plate connected to the outer side of the top of the outer cylinder, and a... An air pump is provided, with an inlet pipe connected to its input end. One end of the inlet pipe is connected to an external nitrogen source. The output end of the air pump is connected to a delivery pipe, one end of which is connected to an annular pipe. The air pump delivers nitrogen into the annular pipe through the delivery pipe, and then evenly injects it into the cooling water in the jacket through the outlet at the bottom of the connecting pipe. The injection of nitrogen causes the cooling water to form a dynamic circulation in the jacket, breaking the limitations of traditional static cooling, improving the heat exchange efficiency between the cooling water and the cylinder body, effectively reducing the cylinder temperature, reducing problems such as cylinder deformation and wear caused by high temperature, and significantly improving the protection effect on the cylinder.

[0007] Preferably, an inlet pipe and a drain pipe are installed at the top and bottom of the other side of the outer cylinder, respectively. Both the inlet pipe and the drain pipe are equipped with valves. Cooling water can be easily injected into the interlayer through the inlet pipe to ensure that the cooling system has enough water for heat exchange. After the cooling water has been used for a period of time, the wastewater can be discharged through the drain pipe to facilitate timely replacement with fresh cooling water and ensure the cooling effect.

[0008] Preferably, a stirring motor is installed on the top side of the cylinder body, and a rotating shaft is installed at the output end of the stirring motor. The bottom end of the rotating shaft passes through the cylinder body and extends to its bottom end. Seven sets of stirring blades, each consisting of three blades, are equidistantly installed on the outer side of the rotating shaft. When the stirring motor is working, it drives the rotating shaft and stirring blades to rotate at high speed, thereby fully stirring and grinding the material inside the cylinder.

[0009] Preferably, a base is installed directly below the cylinder body, and three dampers are installed at equal intervals on the inner wall of the bottom side of the base. The top of each damper is fixedly installed on the bottom side of the outer cylinder, which can absorb and consume the vibration energy generated during the operation of the mill and reduce the direct impact of vibration on the cylinder body.

[0010] Preferably, the base has three grooves on its bottom side, each groove having a guide rod fixedly connected to it. Sliding blocks are slidably mounted on the outer sides of the guide rods within the grooves. Springs are fixed between the sliding blocks and the grooves, and these springs are sleeved on the outer sides of the guide rods. A mounting seat is mounted on the top side of each sliding block, and a connecting rod is mounted inside the mounting seat via a pin. Three support seats are mounted on the bottom side of the outer cylinder, with one end of each connecting rod mounted inside a support seat via a pin. When the mill vibrates during operation, the outer cylinder moves the support seats up and down, which in turn pushes the sliding blocks along the guide rods via the connecting rods. During the sliding process, the springs undergo elastic deformation, absorbing and buffering vibration energy, reducing the transmission of vibration to the base, and further reducing the impact of vibration on the cylinder. This effectively reduces the transmission of vibration generated during mill operation, providing comprehensive protection for the cylinder from fatigue damage caused by vibration.

[0011] Preferably, a control panel is installed on one side of the base. The control panel is electrically connected to the electrical components inside the device and is used for the operation and control of the electrical components inside the device. Through the control panel, the operator can conveniently centrally control electrical components such as the stirring motor and air pump, and realize precise adjustment of parameters such as stirring speed and nitrogen injection volume.

[0012] The advantages of this utility model are:

[0013] 1. In the stirring process of this utility model, a large amount of heat generated by grinding is transferred to the wall of the cylinder body. Cooling water is injected into the jacket through the water inlet pipe. The air pump draws nitrogen from an external nitrogen source through the air inlet pipe and sends it into the annular pipe through the delivery pipe. The nitrogen in the annular pipe is then injected evenly into the cooling water in the jacket through the air outlet at the bottom of the six connecting pipes. As the nitrogen bubbles rise, they push the cooling water to form a dynamic circulation in the jacket, which improves the heat exchange efficiency between the cooling water and the cylinder body, removes the heat from the wall of the cylinder body, effectively reduces the temperature of the cylinder body, and improves the protection effect of the cylinder body.

[0014] 2. The stirring motor of this utility model drives the rotating shaft and blades to vibrate, causing the outer cylinder to move. The three support seats on the bottom side of the outer cylinder move accordingly. The support seats drive the connecting rod through the pin shaft, pushing the mounting seat and sliding block to slide in the guide rod and slide groove. During the sliding process, the spring elastically deforms to absorb and buffer the vibration energy. At the same time, the damper also plays a role in consuming the vibration energy. The spring and the damper work together to effectively reduce the transmission of vibration, avoid fatigue damage to the base and cylinder caused by vibration, and achieve protection of the cylinder. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the intermediate axis side view of the present invention;

[0017] Figure 2 A cross-sectional view of the protective structure;

[0018] Figure 3 This is a schematic diagram of the cooling assembly structure between the outer cylinder and the cylinder body;

[0019] Figure 4 This is a schematic diagram of the stirring assembly structure;

[0020] Figure 5 This is a schematic diagram of the vibration damping component structure.

[0021] In the diagram: 1. Cylinder body; 2. Outer cylinder; 201. Annular pipe; 202. Connecting pipe; 203. Air outlet; 204. Exhaust pipe; 205. Support plate; 206. Air pump; 207. Air inlet pipe; 208. Conveying pipe; 209. Water inlet pipe; 210. Drain pipe; 211. Valve; 3. Stirring motor; 301. Rotating shaft; 302. Stirring blades; 4. Base; 401. Damper; 402. Slide groove; 403. Guide rod; 404. Sliding block; 405. Spring; 406. Mounting base; 407. Connecting rod; 408. Support base; 5. Control panel. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] Please see Figure 1-4As shown, a protective structure for the cylinder of a wet stirred mill includes a cylinder body 1, an outer cylinder 2 installed on the outside of the cylinder body 1, forming a sandwich between the outer cylinder 2 and the cylinder body 1, an annular pipe 201 installed on the top side of the outer cylinder 2, six connecting pipes 202 equidistantly connected to the bottom side of the annular pipe 201, the bottom end of the connecting pipes 202 extending to the bottom end of the sandwich, four sets of two air outlets 203 equidistantly opened at the bottom end of each connecting pipe 202, an exhaust pipe 204 connected to the outer side of the top of the outer cylinder 2, a support plate 205 connected to the outer side of the top of the outer cylinder 2, an air pump 206 installed on the top side of the support plate 205, an air inlet pipe 207 connected to the input end of the air pump 206, one end of the air inlet pipe 207 connected to an external nitrogen source, and a delivery pipe 208 connected to the output end of the air pump 206, one end of the delivery pipe 208 connected to the annular pipe 201.

[0024] The top and bottom ends of the other side of the outer cylinder 2 are respectively equipped with a water inlet pipe 209 and a drain pipe 210, and both the water inlet pipe 209 and the drain pipe 210 are equipped with valves 211.

[0025] A control panel 5 is installed on one side of the base 4. The control panel 5 is electrically connected to the electrical components inside the device and is used for the operation control of the electrical components inside the device. During operation, in practical applications, the cooling water is static in the jacket and cannot remove the heat generated during the grinding process in time, leading to thermal fatigue and reduced strength of the cylinder metal. Cracks may also occur at weak points such as welds or pipes in the cylinder, thereby reducing the protective effect on the cylinder. During the stirring process, a large amount of heat generated during grinding will be transferred to the wall of the cylinder body 1. The valve 211 inside the water inlet pipe 209 is opened, and cooling water is injected into the jacket between the outer cylinder 2 and the cylinder body 1 through the water inlet pipe 209. When the cooling water in the jacket reaches a suitable level, the water inlet pipe is closed. At valve 211 of 209, the air pump 206 is started. The air pump 206 draws nitrogen from an external nitrogen source through the air inlet pipe 207 and sends it into the annular pipe 201 through the delivery pipe 208. The nitrogen in the annular pipe 201 is then evenly injected into the cooling water in the jacket through the air outlet 203 at the bottom of the six connecting pipes 202. As the nitrogen bubbles rise, they push the cooling water to form a dynamic circulation in the jacket, which greatly improves the heat exchange efficiency between the cooling water and the cylinder body 1, removes the heat from the wall of the cylinder body 1, effectively reduces the temperature of the cylinder body, and improves the protection effect of the cylinder body 1. After the cooling water has been used for a period of time, the valve 211 inside the drain pipe 210 is opened to drain the sewage and then fresh cooling water is injected to maintain the cooling effect.

[0026] Please see Figure 1 , 2As shown in Figures 3 and 5, a stirring motor 3 is installed on the top side of the cylinder body 1, and a rotating shaft 301 is installed at the output end of the stirring motor 3. The bottom end of the rotating shaft 301 passes through the cylinder body 1 and extends to its bottom end. Seven sets of stirring blades 302, each consisting of three blades, are installed at equal intervals on the outer side of the rotating shaft 301.

[0027] A base 4 is installed directly below the cylinder body 1. Three dampers 401 are installed at equal intervals on the inner wall of the bottom side of the base 4. The top of each damper 401 is fixedly installed on the bottom side of the outer cylinder 2.

[0028] The base 4 has three sliding grooves 402 inside its bottom side. A guide rod 403 is fixedly connected through each groove 402. Sliding blocks 404 are slidably installed on the outer side of each guide rod 403 inside the groove 402. A spring 405 is fixedly connected between the sliding block 404 and the groove 402, and the spring 405 is sleeved on the outer side of the guide rod 403. A mounting seat 406 is installed on the top side of each sliding block 404. A connecting rod 407 is installed inside the mounting seat 406 via a pin. Three support seats 408 are installed on the bottom side of the outer cylinder 2. One end of each connecting rod 407 is installed inside a support seat 408 via a pin. During operation, the grinding of the bearing balls occurs during the grinding process, involving the grinding media and materials... Frictional heat generation in the cylinder body, coupled with inadequate heat dissipation, can lead to localized overheating and deformation. Therefore, a protective structure is required. The top side of the cylinder body 1 has a feed inlet, and the bottom end of the cylinder body 1 is connected to the outer cylinder 2 via a discharge pipe with a discharge valve. The material and grinding media are fed into the cylinder body 1 through the feed inlet. The operator starts the stirring motor 3 via the control panel 5, and the rotating shaft 301 at its output end rotates. The rotating shaft 301 drives the seven sets of stirring blades 302, three in each set, which are equidistantly installed on the outside, to rotate together. Inside the cylinder body 1, the stirring blades 302 stir the material and grinding media. Through impact, shearing, and friction, the material is fully stirred and ground. After grinding, the discharge valve is opened, and the ground material is output through the discharge pipe.

[0029] When the stirring motor 3 drives the rotating shaft 301 and stirring blades 302 to rotate at high speed, the mill will vibrate. The outer cylinder 2 will move under the action of vibration, and the three support seats 408 on the bottom side of the outer cylinder 2 will move accordingly. The connecting rod 407 will move through the pin shaft. The movement of the connecting rod 407 will push the mounting seat 406 and the sliding block 404 connected to it, so that it slides outside the guide rod 403 and inside the slide groove 402. During the sliding process of the sliding block 404, the spring 405 sleeved on the outside of the guide rod 403 will undergo elastic deformation to absorb and buffer the vibration energy. At the same time, the damper 401 will also play a role in absorbing and consuming the vibration energy generated during the operation of the mill. The spring 405 and the damper 401 work together to reduce the vibration transmitted to the base 4 and the cylinder, and protect the cylinder from fatigue damage caused by vibration in all directions.

[0030] Working principle: The top side of the cylinder body 1 is provided with a feed port. The bottom end of the cylinder body 1 passes through the outer cylinder 2 and is connected to a discharge pipe with a discharge valve. The material and grinding media are fed into the inside of the cylinder body 1 through the feed port. The operator starts the stirring motor 3 through the control panel 5. The rotating shaft 301 at its output end rotates. The rotating shaft 301 drives the seven sets of stirring blades 302, three in each set, which are installed at equal intervals on the outside to rotate together. Inside the cylinder body 1, the stirring blades 302 stir the material and grinding media. Through impact, shearing and friction, the material is fully stirred and ground. After grinding is completed, the discharge valve is opened and the ground material is output through the discharge pipe.

[0031] During the mixing process, the large amount of heat generated by grinding is transferred to the wall of the cylinder body 1. The valve 211 inside the water inlet pipe 209 is opened, and cooling water is injected into the interlayer between the outer cylinder 2 and the cylinder body 1 through the water inlet pipe 209. When the cooling water level in the interlayer reaches a suitable level, the valve 211 of the water inlet pipe 209 is closed. At this time, the air pump 206 is started. The air pump 206 draws nitrogen from an external nitrogen source through the air inlet pipe 207 and sends it into the annular pipe 201 through the delivery pipe 208. The nitrogen in the annular pipe 201 then... Six connecting pipes 202 evenly inject cooling water into the jacket through the air outlet 203 at their bottom ends. As the nitrogen bubbles rise, they drive the cooling water to form a dynamic circulation in the jacket, which greatly improves the heat exchange efficiency between the cooling water and the cylinder body 1, removes the heat from the wall of the cylinder body 1, effectively reduces the cylinder temperature, and improves the protection effect of the cylinder body 1. After the cooling water has been used for a period of time, the valve 211 inside the drain pipe 210 is opened to drain the sewage, and then fresh cooling water is injected to maintain the cooling effect.

[0032] When the stirring motor 3 drives the rotating shaft 301 and stirring blades 302 to rotate at high speed, the mill will vibrate. The outer cylinder 2 will move under the action of vibration, and the three support seats 408 on the bottom side of the outer cylinder 2 will move accordingly. The connecting rod 407 will move through the pin shaft. The movement of the connecting rod 407 will push the mounting seat 406 and the sliding block 404 connected to it, so that it slides outside the guide rod 403 and inside the slide groove 402. During the sliding process of the sliding block 404, the spring 405 sleeved on the outside of the guide rod 403 will undergo elastic deformation to absorb and buffer the vibration energy. At the same time, the damper 401 will also play a role in absorbing and consuming the vibration energy generated during the operation of the mill. The spring 405 and the damper 401 work together to reduce the vibration transmitted to the base 4 and the cylinder, and protect the cylinder from fatigue damage caused by vibration in all directions.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A protective structure for the cylinder of a wet stirred mill, characterized in that: The system includes a cylindrical body (1), an outer cylinder (2) installed on the outside of the cylindrical body (1), and a sandwich layer formed between the outer cylinder (2) and the cylindrical body (1). An annular pipe (201) is installed on the top side of the outer cylinder (2), and six connecting pipes (202) are equidistantly connected to the bottom side of the annular pipe (201). The bottom end of each connecting pipe (202) extends to the bottom end of the sandwich layer. Each connecting pipe (202) has four sets of two air outlets (203) equidistantly opened at its bottom end. The outer cylinder (2... An exhaust pipe (204) is connected to the outer top of the outer cylinder (2). A support plate (205) is connected to the outer top of the outer cylinder (2). An air pump (206) is installed on the top side of the support plate (205). An air inlet pipe (207) is connected to the input end of the air pump (206). One end of the air inlet pipe (207) is connected to an external nitrogen source. A delivery pipe (208) is connected to the output end of the air pump (206). One end of the delivery pipe (208) is connected to an annular pipe (201).

2. The protective structure for the cylinder of a wet stirred mill according to claim 1, characterized in that: The top and bottom of the other side of the outer cylinder (2) are respectively equipped with a water inlet pipe (209) and a drain pipe (210), and valves (211) are installed inside the water inlet pipe (209) and the drain pipe (210).

3. The protective structure for the cylinder of a wet stirred mill according to claim 2, characterized in that: A stirring motor (3) is installed on the top side of the cylinder body (1). A rotating shaft (301) is installed at the output end of the stirring motor (3). The bottom end of the rotating shaft (301) passes through the cylinder body (1) and extends to its bottom end. Seven sets of stirring blades (302) with a total number of three are installed at equal intervals on the outer side of the rotating shaft (301).

4. The protective structure for the cylinder of a wet stirred mill according to claim 3, characterized in that: A base (4) is installed directly below the cylinder body (1). Three dampers (401) are installed at equal intervals on the inner wall of the bottom side of the base (4). The top of each damper (401) is fixedly installed on the bottom side of the outer cylinder (2).

5. The protective structure for the cylinder of a wet stirred mill according to claim 4, characterized in that: The base (4) has three sliding grooves (402) inside its bottom side. A guide rod (403) is fixedly connected through each sliding groove (402). A sliding block (404) is slidably installed on the outside of the guide rod (403) inside the sliding groove (402). A spring (405) is fixed between the sliding block (404) and the sliding groove (402). The spring (405) is sleeved on the outside of the guide rod (403). A mounting seat (406) is installed on the top side of the sliding block (404). A connecting rod (407) is installed inside the mounting seat (406) through a pin. Three support seats (408) are installed on the bottom side of the outer cylinder (2). One end of the connecting rod (407) is installed inside the support seat (408) through a pin.

6. The protective structure for the cylinder of a wet stirred mill according to claim 5, characterized in that: A control panel (5) is installed on one side of the base (4). The control panel (5) is electrically connected to the electrical components inside the device and is used for the operation control of the electrical components inside the device.

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