Electrode high-precision cutting device

Abstract

The utility model relates to electrode cutting technical field discloses electrode high accuracy cutting device, including work table, the left side of work table is provided with filter mechanism, the effect of filter mechanism is filter working liquid, filter mechanism includes fixed shell, the fixed shell sets up in the left side of work table, the inside fixed shell is installed with rotating shell, the left end of rotating shell is provided with water outlet, the inside fixed shell is installed with filter screen, the left and right ends of filter screen all are fixedly connected with the isolation ring, the bottom right end intercommunication of fixed shell has liquid outlet, in the utility model, working liquid is penetrated through filter screen under the centrifugal force, and the working liquid after filtration enters rotating shell and filter screen cavity, and is discharged from liquid outlet, and the mechanism utilizes centrifugal force to accelerate working liquid and impurity separation, compares traditional method, and centrifugal force auxiliary makes working liquid more easily penetrate filter screen, reduces the influence of jam.

Description

Technical Field

[0001] This utility model relates to the field of electrode cutting technology, and in particular to high-precision electrode cutting equipment. Background Technology

[0002] Electrode cutting equipment, also known as wire electrical discharge machining equipment, is a highly precise metal processing technology. Its principle is to use the instantaneous high-temperature spark generated by electrical energy to erode metal materials, thereby achieving the purpose of cutting shapes. It is an indispensable key equipment in the mold, aerospace, and medical device manufacturing industries. Its structure includes electrode wire, working fluid system, mechanical transmission system, power supply system, control system, machine tool body, and protective devices.

[0003] The working fluid system is a crucial component in the cutting process of this equipment. Its main function is to establish a physical isolation layer between the electrode wire and the workpiece, preventing accidental discharge in non-processing areas, dissipating high discharge temperatures, and removing eroded debris. However, during processing, because the working fluid is recycled, a large number of fine debris accumulates in the liquid over time, altering its physical properties, preventing it from providing cooling, increasing resistance, and reducing cutting accuracy. Under current technological conditions, a filtration system and a scraping mechanism are used to address this issue. This involves a double-layer filtration structure using a primary metal mesh screen and a paper fine filter element to separate debris and impurities from the working fluid, and a scraping mechanism to clean the residue on the filter screen. However, hard alloy debris can embed in the filter screen pores, causing blockage and reducing filtration efficiency. Furthermore, the existing scraping mechanism uses a single-sided fixed scraper, which can only clean flat filter screens, resulting in a higher residue rate on the curved areas of cylindrical filter elements, reducing filter screen lifespan, increasing equipment costs, and requiring frequent filter screen replacements, which takes a significant amount of time, disrupting production rhythm and further reducing processing efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-precision electrode cutting device, which aims to improve the existing technology that causes filter screen clogging, resulting in reduced filtration effect, reduced filter screen usage time, increased equipment cost, and frequent filter screen replacement requiring a lot of time, affecting production rhythm and further reducing processing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision electrode cutting device, including a worktable, a filter mechanism is provided on the left side of the worktable, the function of the filter mechanism is to filter the working fluid, and a cleaning mechanism is fixedly connected to the right side of the worktable, the function of the cleaning mechanism is to clean the cutting debris.

[0006] The filtration mechanism includes a fixed outer shell, which is located on the left side of the workbench. A rotating outer shell is installed inside the fixed outer shell. A water outlet is located at the left end of the rotating outer shell. A filter screen is installed inside the rotating outer shell. Isolation rings are fixedly connected to both ends of the filter screen, which is then fixedly connected to the rotating outer shell via the isolation rings. A liquid outlet is connected to the bottom right end of the fixed outer shell. A second sealing cover is fixedly connected to both ends of the rotating outer shell, and a first sealing cover is fixedly connected to both ends of the fixed outer shell. A water inlet is connected to the right end of the fixed outer shell and is connected to the right end of the filter screen. Bearings are rotatably connected to the middle of both first sealing covers, and the bearings are fixedly connected to the left and right sides of the rotating outer shell. The water inlet passes through the middle of the bearing. A drive assembly is installed at the right end of the bearing.

[0007] As a further description of the above technical solution:

[0008] The drive assembly includes a motor, which is located at the right end of the fixed housing. A drive wheel is fixedly connected to the output end of the motor. A belt is driven to the outer wall of the drive wheel. A driven wheel is driven to the top inner side of the belt. A bearing is fixedly connected to the middle of the driven wheel.

[0009] As a further description of the above technical solution:

[0010] The cleaning mechanism includes a tub body, which is fixedly connected to the right side of the workbench. A base is fixedly connected to the bottom of the tub body, and multiple limiting claws are fixedly connected to the top of the base. A second motor is provided at the bottom of the base, and a rotating shaft is fixedly connected to the output end of the second motor. The rotating shaft is rotatably connected to the middle of the base and passes through the inside of the tub body. A rolling component is fixedly connected to the outer wall of the rotating shaft.

[0011] As a further description of the above technical solution:

[0012] The rolling assembly includes two connecting strips, both of which are fixedly connected to the outer wall of the rotating shaft. Two rolling grooves are fixedly connected to the front side of each of the two connecting strips. Ball joints are slidably connected inside the rolling grooves. Spring tubes are fixedly connected to the front side of each of the ball joints. Cleaning rollers are fixedly connected to the front side of each of the spring tubes.

[0013] As a further description of the above technical solution:

[0014] An electrode wire is installed on the front side of the middle part of the workbench, and a liquid collection tank is provided at the bottom of the electrode wire.

[0015] As a further description of the above technical solution:

[0016] A flow pipe is connected to the left side of the liquid collection tank, and a water inlet is connected to the left end of the flow pipe.

[0017] As a further description of the above technical solution:

[0018] A support is provided on the left side of the workbench, and trusses are fixedly connected to the top left and right sides of the support. Bearings are rotatably connected to the top of the two trusses. A liquid collection tank is provided at the bottom of the fixed housing, and the liquid collection tank is fixedly connected to the top of the support.

[0019] As a further description of the above technical solution:

[0020] Two connecting plates are fixedly connected to the right side of the workbench, and both connecting plates are fixedly connected to the outer wall of the barrel. A support plate is fixedly connected to the bottom of the second motor, and a barrel lid is rotatably connected to the top of the barrel.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, a motor drives a drive wheel, which in turn drives a driven wheel and bearing, causing the rotating housing to rotate within the fixed housing. Under centrifugal force, the working fluid passes through the filter screen, while debris and impurities are blocked. The filtered working fluid enters the cavity between the rotating housing and the filter screen, and then enters the collection chamber between the rotating housing and the fixed housing through the outlet. It is then discharged from the outlet and stored for later circulation. This mechanism utilizes centrifugal force to accelerate the separation of the working fluid from impurities, and the filter screen blocks impurities. Compared with traditional methods, centrifugal force assists in making it easier for the working fluid to pass through the filter screen, reducing the impact of clogging and solving the problem of reduced filtration effect caused by filter screen clogging.

[0023] 2. In this utility model, after the filter screen has been used for a period of time, it is placed into the barrel and pressed to embed it into the limiting claw for fixation. The second motor is started to drive the rotating shaft and the rolling assembly for cleaning. When the inner wall of the filter screen comes into contact with the cleaning roller, pressure is applied to compress the spring tube. The elastic force of the spring tube pushes the cleaning roller to stick tightly to the inner wall and fix it. The ball joint and the rolling groove enable the cleaning roller to rotate in multiple directions and adjust its posture according to the shape of the inner wall of the filter screen. This mechanism can clean filter screens of various shapes and solves the problem that the traditional scraping mechanism is only suitable for flat filter screens and has a high residual rate when cleaning the curved surface of cylindrical filter elements. Attached Figure Description

[0024] Figure 1 This is a front view of the high-precision electrode cutting device proposed in this utility model;

[0025] Figure 2 This is a perspective view of the high-precision electrode cutting device proposed in this utility model;

[0026] Figure 3 This is an exploded view of the filter mechanism of the high-precision electrode cutting device proposed in this utility model;

[0027] Figure 4 This is an exploded view of the cleaning mechanism of the high-precision electrode cutting equipment proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the rolling assembly of the high-precision electrode cutting device proposed in this utility model;

[0029] Figure 6 This is a diagram illustrating the filtration mechanism of the high-precision electrode cutting device proposed in this utility model.

[0030] Legend:

[0031] 1. Workbench; 2. Filtration mechanism; 201. Fixed housing; 202. Rotating housing; 203. Liquid outlet; 204. Filter screen; 205. Isolation ring; 206. Drive assembly; 2061. Motor 1; 2062. Drive wheel; 2063. Driven wheel; 2064. Belt; 207. Sealing cover 1; 208. Sealing cover 2; 209. Water outlet; 210. Water inlet; 211. Bearing; 3. Cleaning mechanism; 01. Barrel body; 302. Motor II; 303. Base; 304. Limiting claw; 305. Rotating shaft; 306. Rolling assembly; 3061. Connecting strip; 3062. Rolling groove; 3063. Ball joint; 3064. Bourdon tube; 3065. Cleaning roller; 4. Liquid collection tank I; 5. Liquid collection tank II; 6. Connecting plate; 7. Support plate; 8. Flow pipe; 9. Bracket; 10. Truss; 11. Electrode wire; 12. Barrel lid. Detailed Implementation

[0032] 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 protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 3 and Figure 6This utility model provides an embodiment of a high-precision electrode cutting device, including a worktable 1. A filter mechanism 2 is arranged on the left side of the worktable 1, the function of which is to filter the working fluid. A cleaning mechanism 3 is fixedly connected to the right side of the worktable 1, the function of which is to clean cutting debris. The filter mechanism 2 includes a fixed outer shell 201, which is located on the left side of the worktable 1. A rotating outer shell 202 is installed inside the fixed outer shell 201. A water outlet 209 is opened at the left end of the rotating outer shell 202 for conducting the filtered working fluid. A filter screen 204 is installed inside the rotating outer shell 202, and different materials or... Different layers of filter screen 204 are fixedly connected to both the left and right ends of the filter screen 204. The filter screen 204 is fixedly connected to the rotating housing 202 through the isolation rings 205. A cavity is formed between the rotating housing 202 and the filter screen 204 for initial storage of the filtered working liquid. The bottom right end of the fixed housing 201 is connected to the outlet 203 to discharge the working liquid from the cavity. The left and right ends of the rotating housing 202 are fixedly connected to the sealing cap 208, and the left and right ends of the fixed housing 201 are fixedly connected to the sealing cap 207. The right end of the fixed housing 201 is connected to the inlet 210, which is connected to the right end of the filter screen 204. The unfiltered working liquid... The fluid enters the filter mechanism 2 through this point. Bearings 211 are rotatably connected to the center of each of the two sealing covers 207. The bearings 211 are fixedly connected to the left and right sides of the rotating housing 202. An inlet 210 passes through the center of the bearing 211, allowing the working fluid to enter from the center and ensuring that the fixed housing 201 remains relatively stationary while the rotating housing 202 rotates. A drive assembly 206 is installed at the right end of the bearing 211. The drive assembly 206 includes a motor 2061, which is located at the right end of the fixed housing 201. A drive wheel 2062 is fixedly connected to the output end of the motor 2061, and a belt is driven through the outer wall of the drive wheel 2062. 2064, the inner top of the belt 2064 is connected to the driven wheel 2063, the middle of the driven wheel 2063 is fixedly connected to the bearing 211, which provides power for the rotation of the filter mechanism 2. The left side of the liquid collection tank 4 is connected to the flow pipe 8, and the left end of the flow pipe 8 is connected to the water inlet 210, which is the flow channel for the working liquid. The left side of the workbench 1 is provided with the support 9, and the top left and right sides of the support 9 are fixedly connected to the truss 10. The top of the two trusses 10 are rotatably connected to the bearing 211 for fixing the filter mechanism 2. The bottom of the fixed housing 201 is provided with the liquid collection tank 5, which is fixedly connected to the top of the support 9 to collect the filtered working liquid.

[0034] Specifically, the used working fluid flows into the filter mechanism 2 through the inlet 210, and then the motor 2061 is started. The motor 2061 is fixed on the outside of the filter mechanism 2, and its output shaft is connected to the drive wheel 2062. The operation of the motor 2061 drives the drive wheel 2062 to start rotating. The surface of the drive wheel 2062 is provided with anti-slip grooves. It is connected to the driven wheel 2063 through the belt 2064. The belt 2064 is sleeved on the outside of the drive wheel 2062 and the driven wheel 2063, and the power is transmitted by friction. The driven wheel 2063 is mounted on the outer ring of the bearing 211. The inner ring of the bearing 211 is fixed on the central shaft of the rotating housing 202. The rotation of the driven wheel 2063 drives the bearing 211, which in turn drives the rotating housing 202 to rotate at high speed inside the fixed housing 201. A sealing ring is provided between the fixed housing 201 and the rotating housing 202. To prevent leakage of the working fluid, as the rotating housing 202 rotates, the working fluid in the filter mechanism 2 begins to rotate and flow synchronously under the action of centrifugal force. The filter screen 204 is cylindrical and installed inside the rotating housing 202. Driven by centrifugal force, the working fluid moves outward and passes through the mesh of the filter screen 204. Debris and other impurities in the working fluid are blocked by the filter screen 204 because their particle size is larger than the mesh. The filtered working fluid enters the annular cavity between the rotating housing 202 and the filter screen 204. The filtered working fluid flows out through the outlet 209, which is located on the side wall of the rotating housing 202. The working fluid enters the collection chamber between the rotating housing 202 and the fixed housing 201 through the outlet 209. The bottom of the collection chamber is provided with an outlet 203. The working fluid is finally discharged from the outlet 203 and enters the external storage container for temporary storage, waiting for recycling.

[0035] Reference Figure 1 , Figure 4 and Figure 5The cleaning mechanism 3 includes a barrel 301, which is fixedly connected to the right side of the workbench 1. A base 303 is fixedly connected to the bottom of the barrel 301, and multiple limiting claws 304 are fixedly connected to the top of the base 303 to prevent the filter screen 204 from moving abnormally during the cleaning process. A second motor 302 is installed at the bottom of the base 303, and a rotating shaft 305 is fixedly connected to the output end of the second motor 302. The rotating shaft 305 is rotatably connected to the middle of the base 303 to provide and transmit power for the cleaning process. The rotating shaft 305 passes through the interior of the barrel 301, and a rolling assembly 306 is fixedly connected to the outer wall of the rotating shaft 305. The rolling assembly 306 includes two connecting strips 3061, both of which are fixedly connected to the outer wall of the rotating shaft 305. Two limiting claws 304 are fixedly connected to the front side of each of the two connecting strips 3061. Each of the multiple rolling grooves 3062 has a ball joint 3063 slidably connected inside, allowing the cleaning roller 3065 to adjust its working direction. Each of the multiple ball joints 3063 has a spring tube 3064 fixedly connected to its front side, providing the cleaning roller 3065 with the necessary pressure to ensure cleaning effect. Each of the multiple spring tubes 3064 has a cleaning roller 3065 fixedly connected to its front side, using friction to prevent the removal of surface cutting debris. Two connecting plates 6 are fixedly connected to the right side of the worktable 1, and both connecting plates 6 are fixedly connected to the outer wall of the barrel 301, so that the cleaning mechanism 3 can be stably attached to the machine. A support plate 7 is fixedly connected to the bottom of the second motor 302 for fixing the second motor 302. A barrel cover 12 is rotatably connected to the top of the barrel 301 to prevent external dust from contaminating the internal equipment.

[0036] Specifically, after the filter screen 204 has been used for a period of time, it is removed from the filter mechanism 2, placed and moved above the barrel 301. The filter screen 204 slowly descends into the barrel 301, and is pressed appropriately so that its bottom contacts the bottom of the barrel 301. Multiple limiting claws 304 are symmetrically distributed on the inner wall of the barrel 301. The limiting claws 304 are fixed after the filter screen 204 descends into place. The motor 302 installed outside the barrel 301 is started. The output shaft of the motor 302 is fixedly connected to one end of the rotating shaft 305. When the motor 302 runs, it drives the rotating shaft 305 to rotate inside the barrel 301. Multiple rolling components 306 are installed on the outer wall of the rotating shaft 305. The rolling components 306 roll synchronously with the rotating shaft 305 to start the cleaning work. When the inner wall of the filter screen 204 contacts the cleaning roller 3065, the filter screen... The inner wall of the screen 204 applies inward pressure to the cleaning roller 3065. This pressure is transmitted to the spring tube 3064 connected to the cleaning roller 3065. The spring tube 3064 consists of inner and outer tubes and a spring. When subjected to pressure, the inner spring is compressed, and the spring tube 3064 generates elastic force to push the cleaning roller 3065 in the opposite direction, so that the cleaning roller 3065 always adheres tightly to the inner wall of the screen 204. At the same time, it plays a certain role in fixing during the cleaning process. The cleaning roller 3065 is connected to the rolling groove 3062 through a ball joint 3063. The ball joint 3063 can rotate in multiple directions within the rolling groove 3062. When the inner wall of the screen 204 has a curved surface or irregular shape, the cleaning roller 3065 adjusts its working posture in real time according to the changes in the shape of the inner wall of the screen 204, relying on the cooperation of the ball joint 3063 and the rolling groove 3062.

[0037] Reference Figure 1 and Figure 2 An electrode wire 11 is installed on the front side of the middle part of the workbench 1, and a liquid collection tank 4 is provided at the bottom of the electrode wire 11.

[0038] Specifically, the electrode wire 11 completes high-precision cutting of the workpiece with the assistance of the working fluid, and the liquid collection tank 4 holds the used working fluid to be filtered.

[0039] Working principle: Used working fluid enters the filter mechanism 2 through inlet 210. At this time, motor 2061 is started, which drives the drive wheel 2062 to rotate. The drive wheel 2062 drives the belt 2064, which in turn drives the driven wheel 2063. The driven wheel 2063 drives the bearing 211 to rotate, which in turn drives the rotating housing 202 to rotate inside the fixed housing 201. At this time, the working fluid in the filter mechanism 2 begins to rotate and flow synchronously. Under the action of centrifugal force, it will pass through the filter screen 204. Debris and other impurities in the working fluid will be blocked by the filter screen 204. The filtered working fluid then enters the filter mechanism 2. Within the cavity of the rotating housing 202 and the filter screen 204, which is surrounded by the drive assembly 206 to prevent the filtered working fluid from flowing back, the fluid then enters the collection cavity between the rotating housing 202 and the fixed housing 201 through the outlet 209. Here, it is discharged through the outlet 203 and temporarily stored for recycling. This mechanism utilizes centrifugal force to accelerate the separation of the working fluid and impurities therein, and the barrel-shaped filter screen 204 blocks debris and impurities. Compared with traditional filtration methods, the working fluid passes through the filter screen 204 more easily with the assistance of centrifugal force, reducing the impact of filter screen 204 blockage and solving the problem that filter screen 204 blockage will lead to a reduction in filtration effect.

[0040] After the filter screen 204 has been used for a period of time, remove the filter screen 204 and place it into the barrel 301. Press the filter screen 204 appropriately to embed it into the limiting claw 304 and fix it. Start the motor 302 to drive the rotating shaft 305 and the rolling assembly 306 to roll and begin the cleaning work. When the inner wall of the filter screen 204 comes into contact with the cleaning roller 3065, it will apply inward pressure to compress the spring tube 3064. The spring tube 3064 will generate elastic force to push the cleaning roller 3065 in the opposite direction. 65, which allows the cleaning roller 3065 to fit tightly against the inner wall of the filter screen 204 and play a certain role in fixing it. The ball joint 3063 and the rolling groove 3062 enable the cleaning roller 3065 to rotate in multiple directions and adjust its working posture according to the changes in the inner wall shape of the filter screen 204, so as to adapt to different types of filter screens 204. This mechanism can clean filter screens 204 of other shapes, and solves the problem that the traditional scraping mechanism can only clean flat filter screens 204, and the residual rate will increase in the curved area of ​​the cylindrical filter element.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision electrode cutting device, comprising a worktable (1), characterized in that: A filter mechanism (2) is provided on the left side of the workbench (1). The function of the filter mechanism (2) is to filter the working fluid. A cleaning mechanism (3) is fixedly connected to the right side of the workbench (1). The function of the cleaning mechanism (3) is to clean the cutting debris. The filtration mechanism (2) includes a fixed housing (201) which is located on the left side of the workbench (1). A rotating housing (202) is installed inside the fixed housing (201). An outlet (209) is located at the left end of the rotating housing (202). A filter screen (204) is installed inside the rotating housing (202). Isolation rings (205) are fixedly connected to both ends of the filter screen (204). The filter screen (204) is fixedly connected to the rotating housing (202) via the isolation rings (205). A liquid outlet (203) is connected to the bottom right end of the fixed housing (201). The left and right ends of the moving housing (202) are fixedly connected with sealing caps two (208), and the left and right ends of the fixed housing (201) are fixedly connected with sealing caps one (207). The right end of the fixed housing (201) is connected to a water inlet (210), which is connected to the right end of the filter screen (204). The middle of the two sealing caps one (207) is rotatably connected with bearings (211). The bearings (211) are fixedly connected to the left and right sides of the moving housing (202). The water inlet (210) passes through the middle of the bearing (211). The right end of the bearing (211) is equipped with a drive assembly (206).

2. The high-precision electrode cutting equipment according to claim 1, characterized in that: The drive assembly (206) includes a motor (2061), which is located at the right end of the fixed housing (201). The output end of the motor (2061) is fixedly connected to a drive wheel (2062). A belt (2064) is driven to the outer wall of the drive wheel (2062). A driven wheel (2063) is driven to the top inner side of the belt (2064). A bearing (211) is fixedly connected to the middle of the driven wheel (2063).

3. The high-precision electrode cutting equipment according to claim 1, characterized in that: The cleaning mechanism (3) includes a barrel (301), which is fixedly connected to the right side of the workbench (1). A base (303) is fixedly connected to the bottom of the barrel (301), and multiple limiting claws (304) are fixedly connected to the top of the base (303). A second motor (302) is provided at the bottom of the base (303). A rotating shaft (305) is fixedly connected to the output end of the second motor (302). The rotating shaft (305) is rotatably connected to the middle of the base (303). The rotating shaft (305) passes through the interior of the barrel (301), and a rolling assembly (306) is fixedly connected to the outer wall of the rotating shaft (305).

4. The high-precision electrode cutting equipment according to claim 3, characterized in that: The rolling assembly (306) includes two connecting strips (3061), both of which are fixedly connected to the outer wall of the rotating shaft (305). Two rolling grooves (3062) are fixedly connected to the front side of each of the two connecting strips (3061). Ball joints (3063) are slidably connected inside the multiple rolling grooves (3062). Spring tubes (3064) are fixedly connected to the front side of the multiple ball joints (3063). Cleaning rollers (3065) are fixedly connected to the front side of the multiple spring tubes (3064).

5. The high-precision electrode cutting equipment according to claim 1, characterized in that: An electrode wire (11) is installed on the front side of the middle part of the workbench (1), and a liquid collection tank (4) is provided at the bottom of the electrode wire (11).

6. The high-precision electrode cutting equipment according to claim 5, characterized in that: The left side of the liquid collection tank (4) is connected to a flow pipe (8), and the left end of the flow pipe (8) is connected to a water inlet (210).

7. The high-precision electrode cutting equipment according to claim 1, characterized in that: A support (9) is provided on the left side of the workbench (1). A truss (10) is fixedly connected to the top left and right sides of the support (9). A bearing (211) is rotatably connected to the top of the two trusses (10). A liquid collection tank (5) is provided at the bottom of the fixed housing (201). The liquid collection tank (5) is fixedly connected to the top of the support (9).

8. The high-precision electrode cutting equipment according to claim 3, characterized in that: Two connecting plates (6) are fixedly connected to the right side of the workbench (1). Both connecting plates (6) are fixedly connected to the outer wall of the barrel (301). A support plate (7) is fixedly connected to the bottom of the motor (302). A barrel lid (12) is rotatably connected to the top of the barrel (301).

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