Food processor

Abstract

The utility model provides a food processing machine, which belongs to the field of food processing machines, and comprises a cup body component, a cup cover component and a cup cover component, the smashing device is separably arranged at the cup bottom, the smashing device comprises a smashing cutter, a cutter holder shell and a permanent magnet arranged in the cutter holder shell, and the permanent magnet drives the smashing cutter to rotate through a transmission shaft; a mounting cavity used for mounting a shaft seal and a bearing is integrally formed in the tool apron shell, and a through hole defined by flanging is formed in the upper end of the mounting cavity, so that the transmission shaft passes through the mounting cavity from bottom to top and is connected with the shaft seal and the bearing. By arranging the mounting cavity integrally integrated on the tool apron shell, the magnetic drive transmission of the crushing cutter is realized, and the crushing device is simple in structure and low in cost.

Description

Technical Field

[0001] The utility model belongs to the field of food processing machines, and in particular relates to a non-contact transmission magnetic drive food processing machine. Background Art

[0002] Existing food processing machines, such as wall-breaking machines and soymilk machines, generally include a main unit and a cup body detachably connected to the main unit. A crushing knife is provided in the cup body, and a motor is provided in the main unit. The crushing knife includes a crushing blade and a cutter shaft. The cutter shaft is provided with a first connector, and the motor shaft is provided with a second connector. The first connector and the second connector are engaged and connected to transmit the motor power to the crushing knife, and the crushing blade rotates and crushes the food in the cup body. Due to the contact and meshing transmission of the connector, the noise and vibration noise of the motor as a power source are directly transmitted upward to the cup body, and are superimposed on the crushing noise in the cup body. As the number of times the cup body and the main unit are disassembled and assembled increases, the installation positioning and wear between the connectors increase, resulting in a decrease in the coaxiality of the connector relative to the motor shaft and the cutter shaft, which in turn produces abnormal transmission noise. The reduction in coaxiality and the disturbance of the crushing knife also affect the crushing performance of the food processor.

[0003] To prevent wear between connectors, another existing food processor installs the motor on a detachable cup. The motor shaft is directly connected to the pulverizer shaft and drives the pulverizer, thus avoiding transmission noise between connectors. However, the detachable motor is not conducive to the lightweight cup, making it difficult for users to remove and place the cup, which reduces the user experience. In addition, regardless of whether there is a connector or not, the pulverizer is fixed at the bottom of the cup, making it difficult for users to clean the pulverizer blade and the space below the blade in the cup, resulting in inconvenience.

[0004] To address the issue of easy blade cleaning, food processors with removable blade assemblies have emerged, allowing users to thoroughly clean the blades. However, the inconvenience of assembly and disassembly, coupled with the reduced alignment and sealing reliability caused by frequent assembly and disassembly, remains a challenge. Furthermore, regardless of whether the blades need to be disassembled for cleaning, the connection between the blade shaft and the cup body carries the risk of seal degradation and leakage that could damage the motor.

[0005] Utility model patent application number CN201710772357.5 discloses a food processor that utilizes a first magnetic disk connected to the rotating shaft and blades, magnetically driving the first disk to address the sealing issue caused by the opening in the mixing cup for the blade shaft. Furthermore, because the mixing blade assembly and the motor are driven contactlessly via the first and second magnetic disks, the transmission torque relies entirely on the magnetic force between the disks. High torque is required to drive the pulverizer blade to crush at high speeds. Therefore, the magnetic elements on the disks have strong magnetic force, and when not installed, they can easily attract metal components near the disks. This is particularly true for kitchen knives and metal sinks, where the entire mixing blade assembly is firmly attached to the surface, making it difficult to remove. Forced separation can even risk scratching fingers. However, this disk structure is relatively complex, and the pulverizer blade, in particular, requires a separate blade holder for assembly. This complex manufacturing process leads to high production costs. Furthermore, the shaft seal reliability is poor, making it susceptible to residual slurry intrusion. Therefore, simplifying the internal structure of the pulverizer assembly while ensuring high torque, low noise, and smooth transmission is a pressing issue. Utility Model Content

[0006] The purpose of the utility model is to provide a magnetically driven food processor to solve the problem that the detachable crushing device through non-contact magnetic transmission, the knife seat mounting structure load, and the shell deformation easily occur when it is independently set in the cup body, resulting in unstable magnetic drive.

[0007] In order to solve the above technical problems, the utility model provides a food processing machine, including a cup body assembly, including a cup body and a cup cover, and a cup bottom is provided at the lower end of the cup body; a crushing device is detachably arranged at the bottom of the cup, and the crushing device includes a crushing knife, a knife seat shell and a permanent magnet arranged in the knife seat shell, and the permanent magnet drives the crushing knife to rotate through the transmission shaft; an installation cavity for installing a shaft seal and a bearing is integrally formed on the knife seat shell, and a through hole surrounded by a flange is provided at the upper end of the installation cavity, so that the transmission shaft passes through the installation cavity from bottom to top and is respectively connected to the shaft seal and the bearing.

[0008] Furthermore, the middle part of the top wall of the tool holder shell extends upward and downward respectively to form an upper surrounding edge and a lower surrounding edge, the flange is arranged at the top end of the upper surrounding edge, and the upper surrounding edge and the lower surrounding edge are connected and enclosed with the flange to form the installation cavity.

[0009] Furthermore, the tool holder housing includes a side wall and a bottom wall, and the lower end of the side wall of the tool holder housing is fixed to the bottom wall by welding, so that a closed cavity is formed in the tool holder housing.

[0010] Furthermore, the side wall of the tool holder shell is arranged to be tilted upward, and the upper end of the side wall of the tool holder shell is connected to the flange.

[0011] Furthermore, the installation cavity includes a shaft seal installation cavity and a bearing installation cavity, and an annular step is provided at the connection point between the shaft seal installation cavity and the bearing installation cavity.

[0012] Furthermore, a gasket is provided between the bearing and the annular step, the upper end of the bearing abuts against the annular step through the gasket, and a limiting retaining spring is provided at the lower end of the bearing.

[0013] Furthermore, a disc is fixedly connected to the lower end of the transmission shaft, the permanent magnet is installed in the disc, and the disc and the permanent magnet rotate integrally with the transmission shaft.

[0014] Furthermore, a first isolating member, a crushing knife and a fixing member are sleeved on the transmission shaft extending out of the through hole from bottom to top. The fixing member is connected to the upper end of the transmission shaft through a thread and abuts against the crushing knife.

[0015] Furthermore, the crushing knife includes a first blade, a second isolation piece and a second blade in order from bottom to top.

[0016] Furthermore, the bottom surface of the knife seat housing is provided with a recess or a boss; and / or the bottom of the cup is provided with a recess or a boss.

[0017] The beneficial effects of the utility model are:

[0018] The pulverizing device is detachably mounted at the bottom of the cup. The pulverizing device includes a pulverizing blade 301, a blade holder housing 302, and a permanent magnet disposed within the blade holder housing. The blade holder housing is integrally formed with a mounting cavity for mounting a shaft seal and bearings. The upper end of the mounting cavity is provided with a through hole formed by a flange, allowing the drive shaft to pass through the mounting cavity from bottom to top and connect with the shaft seal and bearing, respectively. No additional blade holder is required to mount and secure the pulverizing blade. The pulverizing blade is driven, mounted, sealed, and positioned through the integrated structure of the blade holder housing. Because the food processor utilizes magnetic drive, no transmission hole is required at the bottom of the cup, resulting in a food processor cup body without a shaft seal and without water leakage. The blade holder housing itself does not rotate with the pulverizing blade. Therefore, by providing a mounting cavity integrally integrated with the blade holder housing, magnetic drive transmission of the pulverizing blade is achieved. The blade holder housing includes side walls and a bottom wall. The lower end of the side wall of the blade holder housing is welded to the bottom wall to form a closed cavity within the blade holder housing. This prevents the processed material within the cup from entering the pulverizing device, ensuring good sealing within the pulverizing device. The blade holder housing also has excellent strength at its upper end, lower bottom surface, and surrounding sides, making it less susceptible to deformation in high-temperature, high-humidity, and even dry-burning environments. The bottom surface of the blade holder housing preferably includes a recess or a protrusion, which prevents the blade holder housing from deforming upward and interfering with the upper permanent magnet within the blade holder housing. This ensures that the upper permanent magnet and the lower drive disk are in close proximity, maintaining strong magnetic attraction and enabling torque transmission. Furthermore, a gap is maintained between the upper permanent magnet and the bottom surface of the blade holder housing to prevent frictional noise and ensure stable and reliable torque transmission. Furthermore, the bottom surface of the cup mates with the bottom surface of the blade holder housing. While the bottom surface of the blade holder housing remains stable, the cup bottom is also less likely to bulge downward, maintaining a stable gap between the cup bottom and the lower drive disk. The cup bottom preferably includes a protrusion to enhance deformation resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the food processing machine described in the present invention.

[0021] Figure 2 This is a schematic diagram of the food processing machine's crushing device, cup body, and main machine in a separated state.

[0022] Figure 3 This is a structural schematic diagram of the food processing machine crushing device of the present invention.

[0023] Figure 4This is a schematic diagram of the exploded structure of the pulverizing device of the food processing machine described in the present invention.

[0024] Figure 5 This is a schematic diagram of the cup structure of the food processing machine described in the present invention.

[0025] Figure 6 This is a schematic diagram of another type of pulverizing device and cup body of the food processor of the present invention.

[0026] Figure 7 This is a schematic structural diagram of another pulverizing device of the food processing machine described in the present invention.

[0027] Figure 8 This is a schematic diagram of another type of pulverizing device and cup body of the food processor of the present invention.

[0028] Figure 9 This is a schematic structural diagram of another pulverizing device of the food processing machine described in the present invention.

[0029] The names of the components in the figure are as follows: 100, main engine; 101, motor; 102, lower transmission disk; 103, lower disk body; 104, lower permanent magnet; 200, cup assembly; 201, cup body; 202, cup bottom; 203, boss; 204, sinker; 205, side of sinker; 206, bottom of sinker; 207, annular groove; 208, bottom of cup; 209, side of cup bottom; 210, lower attracting magnet;

[0030] 300, crushing device; 301, crushing knife; 302, knife seat housing; 303, upper housing; 304, lower housing; 305, upper permanent magnet; 306, disk; 307, recess; 308, limit structure; 309, mounting groove; 310, bearing; 311, protrusion; 312, upper attracting magnet; 313, mounting cavity; 314, shaft seal mounting cavity; 315, bearing mounting cavity; 316, upper peripheral edge; 317, lower peripheral edge; 318, annular step; 3 19. Gasket; 320. Retaining spring; 321. First recess; 322. Second recess; 323. First gap; 324. Second gap; 325. Third gap; 326. Support platform; 327. Flanging; 328. Iron ring; 329. First spacer; 330. First blade; 331. Second spacer; 332. Second blade; 333. Fixing member; 334. Drive shaft; 335. First shoulder; 336. Second shoulder; 337. Third shoulder. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 9As shown, the present invention provides a magnetically driven food processor, comprising a main unit 100, wherein the main unit 100 is provided with a lower transmission disk 102 driven by a motor 101. The lower transmission disk is in transmission connection with the motor output shaft, and the motor 101 directly drives the lower transmission disk to rotate; a cup body assembly 200, comprising a cup body 201 and a cup cover, wherein the cup cover is fitted over the upper end of the cup body, and a cup bottom 202 is provided at the lower end of the cup body, wherein the cup bottom is provided with a heating element. Preferably, the cup bottom is equivalent to a heating plate, and the heating element is preferably a heating tube embedded in the heating plate for heating the material in the cup body. The cup bottom is a completely closed surface, and there is no through-hole structure in the center of the cup bottom. Therefore, there is no need to set any sealing structure such as a shaft seal. Compared with traditional food processors with shaft seals, the present invention provides a food processor with a cup body without a shaft seal, which can completely avoid the situation where water leakage from the cup bottom damages the motor.

[0033] The cup body can be detachably mounted on the main unit 100, and the crushing device 300 can be detachably disposed within the cup body. The crushing device includes a crushing blade 301, a blade holder housing 302, and an upper permanent magnet 305 disposed within the blade holder housing. The bottom surface of the blade holder housing 302 is concave to form a depression 307, and the upper permanent magnet 305 is disposed above the depression 307. The inner concave surface of the depression is higher than the lowest point of the crushing device, axially directing the upper permanent magnet away from the plane of the lowest point of the crushing device. When the crushing device is separated from the bottom of the cup and removed from the cup body and placed on a metal countertop in a kitchen environment, such as a sink or kitchen knife, that can be attracted by a magnet, the upper permanent magnet is separated from the countertop by the depression. Since the magnetic force between the permanent magnet and the object of attraction decreases exponentially as the distance between the two increases, the magnetic attraction force decreases exponentially. Therefore, the isolation of the recess 307 can significantly weaken the adsorption force between the upper permanent magnet and the metal table, allowing the user to easily remove the pulverizing device from the metal table without the need for additional lifting tools, making the operation labor-saving and convenient. When the pulverizing device 300 is installed on the bottom of the cup body, the recess 307 can extend the matching area of ​​the pulverizing device and the cup bottom in height. In particular, the side of the recess can form an air gap between the cup body. The liquid is distributed on the bottom surface due to its own gravity, thus preventing water from accumulating in the air gap. This effectively prevents the pulverizing device from being partially adsorbed on the cup bottom after pulping is completed, making it difficult to separate.

[0034] Example 1

[0035] like Figures 1 to 5As shown, a magnetically driven food processing machine includes a main unit, in which a lower transmission disk 102 driven by a motor is provided, the lower transmission disk includes a lower disk body 103 and a lower permanent magnet 104 arranged on the lower disk body; a cup body assembly includes a cup body and a cup cover, the lower end of the cup body is provided with a cup bottom, and the cup body can be detachably mounted on the main unit; a crushing device is detachably arranged in the cup body, the crushing device includes a crushing knife 301, a knife seat shell 302 and an upper permanent magnet 305 arranged in the knife seat shell; the bottom surface of the knife seat shell is concave to form a recess 307, the upper permanent magnet is arranged above the recess, and the inner concave surface of the recess is higher than the lowest point of the crushing device. The bottom of the cup protrudes upward to form a boss 203 that cooperates with the recess. After the cup body is installed in place on the main machine and the crushing device is installed in place on the bottom of the cup, the upper end of the lower transmission disk 102 is located in the boss, and the boss 203 extends into the recess to allow the upper permanent magnet and the lower transmission disk to be set close to each other. This arrangement maximizes the magnetic attraction between the upper permanent magnet 305 and the lower transmission disk 102, ensuring that the torque driven by the motor can be reliably transmitted to the crushing device 300, thereby efficiently crushing the material in the cup body.

[0036] When the crushing device 300 and the cup body 201 are in a separation device, the recess can weaken the magnetic attraction between the upper permanent magnet in the crushing device and the metal kitchen countertop, making it convenient for the user to remove the crushing device with less effort. When the crushing device 300 is installed on the bottom of the cup and installed on the main unit together with the cup body, the upper end of the lower transmission disk can just pass through the bottom of the cup and extend into the boss 203. The boss extends into the recess, so that the upper permanent magnet 305 and the lower permanent magnet 104 on the lower transmission disk 102 are set as close as possible, thereby meeting strong magnetic attraction and strong transmission torque, solving the problem that the crushing device is easily adsorbed on the metal kitchen countertop due to excessive magnetic attraction of the permanent magnet and is difficult to remove, and the dual problem that the distance between the crushing device and the lower transmission disk when placed on the bottom of the cup body is too large, resulting in an exponential decrease in magnetic attraction, resulting in large transmission torque loss and low transmission efficiency. In addition, the crushing device can still operate smoothly when the crushing blade speed reaches 9000rpm and above. The bottom surface of the blade seat shell can fit firmly with the cup body and form a stable suction force with the lower transmission disk to ensure torque transmission while the crushing blade runs smoothly. In particular, when the material is stuck in the blade, the blade seat shell can still maintain stable adsorption, so that the stuck part can be cut into small pieces and then crushed into fine particles under the high-speed processing of the crushing blade. Figure 3 and Figure 5As shown, the preferred concave depth of the recess 307 is H1, H1 ≥ 1 mm, the upward protrusion height of the boss 203 is H2, H2 ≥ 1 mm, and the distance between the top surface of the recess and the bottom surface of the knife seat shell is H3, H3 ≥ 2 mm. In this embodiment, H1 is 2 mm, H2 is 2.5 mm, and H3 is 2.4 mm. The distance between the upper permanent magnet above the recess and the horizontal metal table is obviously greater than 2 mm, which can effectively avoid strong adsorption and difficulty in canceling the crushing device, while ensuring that the boss has sufficient height to effectively extend into the recess, so that the lower transmission disk is sufficiently close to the upper permanent magnet, ensuring strong magnetic attraction between the crushing device and the lower transmission disk when it is installed at the bottom of the cup.

[0037] The projection of the upper permanent magnet 305 on the horizontal plane at least partially overlaps with the projection of the recess 307 on the horizontal plane, which is equivalent to at least partial overlap of the upper permanent magnet and the recess in the vertical direction, so that the recess can effectively isolate the distance between the upper permanent magnet and the horizontal plane. When the projection of the upper permanent magnet 305 on the horizontal plane is larger than the projection of the recess 307 on the horizontal plane or the two partially intersect, the upper permanent magnet is at least partially located outside the recess. At this time, the upper permanent magnet projected in the recess can effectively isolate the magnetic force through the recess, and the upper permanent magnet located outside the recess can partially enhance the transmission of torque. In addition, the morphological structure of the upper permanent magnet is also expanded. It can be completely above the recess or above the recess within the range covered by the recess. The upper permanent magnet outside the recess that is not covered is equivalent to the upper permanent magnet 305 above the recess. It can be partially extended downward and then closer to the lower transmission disk on the outer peripheral side of the recess. The magnetic attraction of the downward extending part of the upper permanent magnet is limited. Since most of the upper permanent magnets have been isolated by the recess, the user can still easily remove the crushing device when it is placed on the metal kitchen countertop. It can be understood that the permanent magnet on the downwardly extending portion can also cooperate with the lower attraction magnet provided in the cup body to play the role of adsorbing the crushing device, thereby preventing the crushing device from falling from the bottom of the cup when pouring the pulp.

[0038] Preferably, the projection of the depression on the horizontal plane completely covers the projection of the upper permanent magnet on the horizontal plane. Preferably, the upper permanent magnet is located directly above the depression. When the crushing device is separated from the cup body, the depression can completely separate the upper permanent magnet from the metal countertop in the kitchen environment. The diameter of the lower transmission disk is smaller than the diameter of the boss. When the crushing device is placed on the bottom of the cup, the upper end of the lower transmission disk is completely inserted into the boss, and the boss is inserted into the depression. This allows the lower permanent magnet of the lower transmission disk to be arranged in close proximity to the upper permanent magnet without wasting the magnetic attraction area that can be matched between the upper permanent magnet and the lower transmission disk. This maximizes the use of the space between the upper permanent magnet and the lower transmission disk. While not weakening the strong torque transmission in the working state, it ensures that when the crushing device is assembled with the cup body, the upper end surface of the lower transmission disk can be fully inserted into the depression, fully in close proximity with the upper permanent magnet to form a strong magnetic attraction.

[0039] Specifically, the blade holder housing 302 includes an upper housing 303 and a lower housing 304. The upper and lower housings together form an inner cavity, the upper permanent magnet is disposed in the inner cavity, and the recess is disposed in the lower housing. Preferably, the upper housing includes an integral top wall and side walls, and the lower housing forms the bottom surface of the blade holder housing. The lower housing is welded and sealed to the lower end of the upper housing. The upper end of the upper housing is sealed and driven by the pulverizer shaft via a shaft seal, thereby forming a closed and sealed inner cavity within the blade holder housing. The cup bottom is also provided with a sink 204, comprising a bottom surface 206 and side surfaces 205. The boss 203 is disposed on the bottom surface of the sink. The blade holder housing is at least partially located within the sink to limit the installation of the pulverizing device. When the pulverizing blades rotate at high speed to pulverize bulk material, the blade holder housing is prone to radial swing due to uneven circumferential force. The sink can limit the sidewalls of the blade holder housing to prevent radial swing or tilting of the blade holder housing. The pulverizing blades further rotate to pulverize the bulk material into small pieces and then into granular material. The circumferential uniformity of the pulverizing blades is essentially restored. The sink 204 cooperates with the blade holder housing 302 to prevent the pulverizing device from separating from the cup bottom, thereby fully maintaining the distance between the upper permanent magnet and the lower drive disk, ensuring strong magnetic attraction and strong transmission torque. Preferably, at least two-thirds of the blade holder housing sidewall is located within the sink 205. The depth of the sink is preferably H, H ≥ 8 mm. In this embodiment, H is 11.3 mm, which effectively limits the position of the blade holder housing. The cup bottom is strong, and the crushing device is not easy to tip over. The blade holder housing is preferably provided with an anti-rotation structure to prevent the blade holder housing from rotating with the upper permanent magnet and crushing blade. Specifically, the anti-rotation structure can be a flat portion, groove, or protrusion provided on the blade holder housing, and the anti-rotation structure cooperates with the sink at the bottom of the cup.

[0040] The diameter of the bottom surface 206 of the sink is greater than the diameter of the boss 203, thereby forming an annular groove 207 between the side of the sink and the boss. The bottom surface of the blade holder housing is provided with a limiting structure 308 surrounding the recess, and the limiting structure cooperates with the annular groove 207. Specifically, the bottom surface of the blade holder housing is concave to form the recess, and a ring-shaped platform is formed in the non-concave area around the recess, which is the limiting structure. When the crushing device is installed on the bottom of the cup, the ring-shaped platform extends into the annular groove, so that the crushing device can be firmly engaged with the boss on the bottom of the cup without deviation during high-speed crushing by the crushing blade.

[0041] The pulverizing device also includes a blade shaft, or transmission shaft 334, which is connected to the pulverizing blade and the upper permanent magnet, respectively. Specifically, the pulverizing device includes a disk 306, on which the upper permanent magnet is mounted. Specifically, the disk is lid-shaped, with a mounting position for the upper permanent magnet provided at its lower end. The upper end of the disk is integrally fixedly connected to the lower end of the blade shaft. A gap is provided between the upper permanent magnet 305 and the upper surface of the recess 307 to prevent scraping, wear, and noise between the upper permanent magnet and the upper surface of the recess. A mounting groove 309 is provided at the center of the bottom of the disk, within which a bearing 310 is disposed. The center of the recess protrudes upward to form a protrusion 311. The top of the protrusion preferably abuts the bearing, providing point-contact support for the lower end of the upper permanent magnet. This minimizes noise and optimizes the dynamic balance of the upper permanent magnet.

[0042] The blade holder housing is further provided with an upper magnet 312. A lower magnet 210 is positioned below the cup body, engaging with the upper magnet. The upper magnet 312 is positioned on the outer periphery of the recess, and the lower magnet 210 is positioned within the cup body. When the crushing device is mounted on the bottom of the cup, the lower magnet engages with the cup body. When the cup body is separated from the main machine, the upper permanent magnet and the lower drive disk are separated at any time. The crushing device can be attracted to the bottom of the cup by the upper and lower magnets, preventing the crushing device from falling out of the cup body when liquid is poured. When the cup body and crushing device are in place, the mutual attraction between the upper and lower magnets assists in the effective attraction between the upper permanent magnet and the lower drive disk, preventing the crushing device from being lifted by the food during processing. Specifically, the disc body is in the shape of a lid with an open bottom. The top wall of the disc body is integrally formed with the lower end of the blade shaft. A plurality of partitions extend downward from the top wall of the disc body. The partitions are spaced apart, and the spaces between the partitions form mounting locations for the upper permanent magnet. An iron ring 328 is provided on the outer periphery of the disk body, and the iron ring includes a longitudinal ring wall and a transverse ring wall connected to the bottom end of the longitudinal ring wall, so as to form a mounting position for installing the upper attraction magnet between the longitudinal ring wall and the transverse ring wall. The upper attraction magnet is annular and is arranged around the outer periphery of the disk body of the upper permanent magnet along with the iron ring. Preferably, the iron ring and the upper attraction magnet are fixedly arranged and separated from the upper permanent magnet and the disk body to avoid being driven to rotate by the upper permanent magnet.

[0043] It is understandable that this embodiment provides another cup bottom structure and a matching scheme between the crushing device and the cup bottom. Specifically, the cup bottom includes a cup bottom bottom surface 208 and a cup bottom side surface 209, and the cup bottom side surface is connected to the side wall of the cup body. Figure 6 The side surface of the cup bottom and the side wall of the cup body are connected. In this embodiment, the boss is provided on the bottom surface of the cup bottom, and the side surface of the cup bottom cooperates with the side surface of the blade holder housing to limit the installation of the crushing device. This arrangement further simplifies the structure of the cup bottom, making cleaning more convenient and thorough, without blind spots.

[0044] This embodiment also provides a structurally optimized pulverizing device 300 and a food processor utilizing the pulverizing device. The food processor includes a cup assembly 200 and a pulverizing device 300, the pulverizing device being detachably mounted on the cup bottom 202. The pulverizing device includes a pulverizing blade 301, a blade holder housing 302, and a permanent magnet disposed within the blade holder housing, namely, an upper permanent magnet 305 in the accompanying drawings. The permanent magnet drives the pulverizing blade 301 to rotate via a drive shaft. The drive shaft 334 also serves as the blade shaft of the pulverizing device. The blade holder housing 302 is integrally formed with a mounting cavity 313 for mounting a shaft seal and bearings. The upper end of the mounting cavity is provided with a through hole surrounded by a flange 327, allowing the drive shaft to pass through the mounting cavity 313 from bottom to top and connect to the shaft seal and bearing, respectively. This eliminates the need for an additional blade holder to mount and secure the pulverizing blade. The pulverizing blade is driven, mounted, sealed, and positioned through the integrated structure of the blade holder housing. Because the food processor utilizes magnetic drive, no transmission holes are required at the bottom of the cup, resulting in a seal-free and leak-free food processor cup. The blade holder housing itself does not rotate with the pulverizing blade. Therefore, a mounting cavity integrally integrated with the blade holder housing enables magnetic drive of the pulverizing blade. The blade holder housing 302 comprises sidewalls and a bottom wall. The lower end of the sidewalls of the blade holder housing is welded to the bottom wall, creating a closed cavity within the housing. This prevents processed material within the cup from entering the pulverizing device. The mounting cavity includes a shaft seal mounting cavity 314 and a bearing mounting cavity 315. An annular step 318 is provided at the connection between the shaft seal mounting cavity and the bearing mounting cavity. The bearing abuts against the stepped surface of the annular step for axial positioning. Preferably, a gasket 319 is provided between the bearing and the annular step. The upper end of the bearing abuts against the annular step through the gasket. A retaining spring 320 is provided at the lower end of the bearing to retain the bearing in position. Preferably, two bearings are provided within the mounting cavity to fully ensure the coaxiality of the drive shaft and transmission stability. In addition, the internal sealing of the pulverizing device is good, and the upper end, lower bottom surface and peripheral side of the blade holder shell are strong, and are not easily deformed in high temperature, high humidity or even dry burning environments.

[0045] The lower end of the transmission shaft 334 is fixedly connected to the disk 306, within which the permanent magnet is mounted. The disk and permanent magnet rotate integrally with the transmission shaft. The permanent magnet is fixedly mounted to the disk to improve the transmission efficiency between the permanent magnet and the pulverizer. The pulverizer comprises multiple layers, which increase the vertical space available for the pulverizer's rotation and pulverization, increasing the volume of material focused on the pulverized material and thereby improving pulverization efficiency. Specifically, the lower portion of the transmission shaft 334 extends into the enclosed cavity of the blade holder housing, while the upper portion of the transmission shaft, extending through the through-hole, is sleeved from bottom to top with a first spacer 329, the pulverizer 301, and a fixed member 333. The fixed member is threadedly connected to the upper end of the transmission shaft and abuts against the pulverizer, effectively clamping the pulverizer between the first spacer and the fixed member. Specifically, the pulverizer comprises, from bottom to top, a first blade 330, a second spacer 331, and a second blade 332. The second spacer is a sleeve extending vertically through which the transmission shaft passes, separating the first and second blades in height. The first isolating member 329 isolates the pulverizing blade from the flange of the blade holder housing, and the second isolating member 331 isolates the first blade from the second blade, thereby increasing the height of the pulverizing space in the axial direction. The bearings within the mounting cavity 313 include a first bearing and a second bearing, which are stacked one above the other and disposed within the mounting cavity below the shaft seal. The pulverizing blade shaft is a drive shaft 335 integral with the disc body. From bottom to top, the drive shaft includes a first shoulder 335 and a second shoulder 336. The first shoulder 335 abuts the lower end face of the bearing within the blade holder housing that supports the drive shaft, while the second shoulder 336 abuts the lower end face of the pulverizing blade. Preferably, the transmission shaft includes, from bottom to top, a first shoulder 335, a second shoulder 336, and a third shoulder 337. The third shoulder 337 abuts the lower end surface of the fixing member 333. The fixing member has an open lower end and is hollow, with an internally threaded hole provided in the hollow portion. The upper end of the transmission shaft extends into the internally threaded hole of the fixing member and is locked and fixed to the fixing member 333. The lower end surface of the fixing member abuts the third shoulder and / or the upper end surface of the crushing blade. This ensures reliable axial positioning of the crushing blade, stable high-speed operation, and higher crushing efficiency. In particular, the multi-layer crushing blades arranged at intervals in the axial direction allow the material to be repeatedly contacted by blades of different layers and subjected to multi-stage crushing, significantly increasing the amount of material crushed per unit time and achieving a smaller particle size after crushing.

[0046] like Figure 3 and Figure 7As shown, the bottom surface of the blade holder housing is preferably provided with a recess 307. This prevents the blade holder housing from deforming upward, ensuring that it does not interfere with the upper permanent magnet within the blade holder housing. This ensures that the upper permanent magnet and the lower drive disk are kept close together, maintaining strong magnetic attraction and enabling torque transmission. Furthermore, a gap is maintained between the upper permanent magnet and the bottom surface of the blade holder housing to prevent friction and noise, ensuring stable and reliable torque transmission. Furthermore, the cup bottom mates with the bottom surface of the blade holder housing. While the blade holder housing bottom maintains a stable shape, the cup bottom is also less likely to bulge downward, maintaining a stable gap between the cup bottom and the lower drive disk. Preferably, a boss 203 is provided on the cup bottom to enhance deformation resistance. It is understood that a boss could also be provided on the bottom surface of the blade holder housing. It is also understood that a recess could also be provided on the cup bottom to prevent the blade holder housing bottom and the cup bottom from contacting the permanent magnet, maintaining a stable gap between the moving and static components, and optimizing the torque transmission stability of the magnetic transmission and the sound quality of the food processor.

[0047] like Figure 7 As shown, as one of the embodiments of the crushing device, the top wall and the side wall of the tool holder shell 302 are arranged in an integrated manner, and the middle part of the top wall of the tool holder shell extends upward and downward respectively to form an upper edge 316 and a lower edge 317, and the flange 327 is arranged at the top of the upper edge. The upper edge and the lower edge are connected and enclosed with the flange to form the installation cavity 313, avoiding the need to set up a separate tool holder for installing the drive shaft and the crushing knife, thereby greatly simplifying the structure of the crushing device, and such an arrangement can effectively improve the coaxiality of the crushing knife, the upper permanent magnet and the lower transmission disk, there is no abnormal sound during the processing, the crushing noise is lower, the crushing knife disturbance is small, and the crushing efficiency is higher.

[0048] like Figure 3 As shown, as another embodiment of the crushing device, the structure of the knife seat shell 302 is further simplified and miniaturized, the side wall of the knife seat shell is tilted upward, and the upper end of the side wall of the knife seat shell is directly connected to the flange 327, and the top wall of the knife seat shell is not provided, so that the overall crushing device is miniaturized, the closed cavity in the knife seat shell has better sealing performance, and is not easily affected by thermal expansion and contraction, thereby further extending the service life of the shaft seal.

[0049] The optimized crushing device can be applied to the food processing machine in this embodiment, which includes a main unit. The main unit and the cup body are separately and detachably arranged. The main unit is provided with a motor and a lower transmission disk directly connected to the motor shaft. After the cup body and the crushing device are installed in place, the upper permanent magnet in the crushing knife seat is attracted by the lower transmission disk and the crushing knife is driven to rotate by the motor.

[0050] It is understandable that the crushing device can also be adapted to other forms of food processing machines. Specifically, the food processing machine includes a main unit, which is integrally and non-detachably arranged with the cup body, and a lower transmission disk for driving the upper permanent magnet is provided in the main unit.

[0051] It can be understood that the optimized crushing device can also be adapted to other forms of food processing machines. Specifically, the food processing machine includes a main unit and a cup body detachably connected to the main unit, the crushing device is arranged in the cup body, and a motor and a lower transmission disk are arranged in the cup seat of the cup body.

[0052] It can be understood that the optimized pulverizing device acts as a motor rotor itself and cooperates with the cup seat of the cup body or the stator component in the main machine to drive the pulverizing knife to rotate.

[0053] Example 2

[0054] like Figures 6 to 9 As shown, this embodiment provides an easy-to-clean magnetic transmission food processor, including a main unit 100, a cup body assembly 200 and a crushing device 300. The main unit is provided with a lower transmission disk 102 driven by a motor, the cup body assembly includes a cup body 201 and a cup cover, the lower end of the cup body is provided with a cup bottom 202, the cup body can be detachably installed on the main unit, the crushing device 300 is detachably arranged in the cup body 201, the crushing device 300 includes a crushing knife 301, a knife seat shell 302 and an upper permanent magnet 305 arranged in the knife seat shell, the bottom surface of the knife seat shell is concave to form a depression 307, the upper permanent magnet 305 is arranged above the depression, the cup bottom 202 is provided with a continuous cup bottom plane, The bottom surface of the knife seat shell 302 contacts and cooperates with the bottom plane of the cup, so that the bottom plane of the cup is loosely matched with the recess 307. When the crushing device and the cup body are in a separated state and placed on the metal table top in the kitchen, the recess can form an isolation space to prevent the upper permanent magnet from being too tightly adsorbed to the metal table top. The recess 307 weakens the adsorption force of the upper permanent magnet 305 on the metal table top, and the user can easily remove the crushing device from the metal table top. The magnetic force required for the adsorption and cooperation between the lower permanent magnet of the lower transmission disk 102 and the upper permanent magnet is adjusted according to the design margin of the processing conditions, thereby meeting the transmission torque while avoiding the crushing device 300 from being adsorbed on the kitchen metal table top and simplifying the bottom surface structure of the cup body. At the same time, the cup body is a continuous plane, and the bottom surface of the crushing device can be better fitted with the bottom plane of the cup bottom, and the recess 307 can effectively form an air gap, which solves the problem that after the food processor completes processing and pours out the slurry, the bottom surface of the crushing device 300 and the bottom plane of the cup are filled with residual slurry, causing the crushing device to be adsorbed on the bottom plane of the cup and difficult to remove.

[0055] This embodiment optimizes the fit between the bottom of the pulverizing device 300 and the bottom of the cup body, simplifying the structure of the cup bottom. This reduces the likelihood of slurry and food residue remaining on the bottom of the cup, making it easier to clean. Preferably, the projection of the upper permanent magnet on the horizontal plane at least partially overlaps with the projection of the recess on the horizontal plane, allowing the recess 307 to effectively isolate the distance between the upper permanent magnet 305 and the horizontal plane. When the projection of the upper permanent magnet 305 on the horizontal plane is larger than the projection of the recess 307 on the horizontal plane, or when the two partially intersect, the upper permanent magnet 305 is at least partially located outside the recess. In this case, the upper permanent magnet projected within the recess can effectively isolate the magnetic force through the recess, while the upper permanent magnet located outside the recess can partially enhance torque transmission. Furthermore, the upper permanent magnet 305 can be further expanded in its morphological structure, allowing it to be completely above the recess, or within the area covered by the recess, while the upper permanent magnet can partially extend downward from the outer portion of the recess. Of course, the projection of the upper permanent magnet on the horizontal plane can completely cover the projection of the recess on the horizontal plane. At this time, the surface of the upper permanent magnet close to the lower transmission disk is large enough, and the area space for cooperating with the lower transmission disk is large. By adjusting the surface magnetic design margin of the lower transmission disk, it can not only meet the requirements of the crushing device to prevent users from easily removing it from the metal countertop in the kitchen, but also ensure strong magnetic attraction and strong torque transmission, and the cup body is easy to clean.

[0056] Specifically, in this embodiment, the recess includes a first recess 321 arranged in the middle of the bottom surface of the knife holder shell, the diameter of the upper permanent magnet is larger than the diameter of the first recess 321, and a first gap 323 is provided between the first recess and the cup bottom plane. The recess also includes a second recess 322 arranged on the bottom surface of the knife holder shell and away from the middle part, and a second gap 324 is provided between the second recess and the cup bottom plane. The cup body is provided with a cup body side wall connected to the cup body and matched with the side surface of the knife holder shell, and a third gap 325 is provided between the cup body side wall and the side surface of the knife holder shell. The first gap 323 and the second gap 324 are not connected to each other, and the second gap 324 is connected to the third gap 325. The third gap can effectively form an air gap to prevent the crushing device from being adsorbed on the cup bottom plane and difficult to remove, and the connection between the second gap and the third gap can allow outside air to quickly pass through the gap into between the cup bottom and the bottom surface of the knife holder shell, thereby further prompting the user to quickly remove the crushing device from the cup body. An upper isolation gap is defined between the upper permanent magnet and the bottom surface of the blade holder housing. The lower drive disk is positioned below the cup bottom plane, with a lower isolation gap defined between the lower drive disk and the cup bottom plane. The upper isolation gap, the blade holder housing bottom surface, the first and / or second gaps, the cup bottom plane, and the lower isolation gap are sequentially defined between the upper permanent magnet and the lower drive disk. This minimizes axial space by utilizing the recessed space, simplifying assembly and disassembly of the pulverizing device from the cup body. It should be noted that when the pulverizing device is placed on the cup bottom, the interconnected second and third gaps facilitate removal, preventing the space between the blade holder housing and the cup bottom from becoming filled with slurry and becoming difficult to remove during removal. When the pulverizing device is placed on a horizontal metal kitchen countertop, both the first and second recesses provide axial isolation, preventing the blade holder housing from adhering to the countertop and making removal difficult. This also eliminates the need for the user to use external force or tools to separate the pulverizing device.

[0057] The lower drive disk includes a lower disk body 103 and a lower permanent magnet 104 mounted on the lower disk body. The lower disk body is provided with an upper-opening mounting slot 309. The lower permanent magnet 104 is fixedly mounted in the mounting slot, with its upper end exposed, thereby minimizing surface magnetic loss. The blade holder housing 302 includes an upper housing 303 and a lower housing 304. The lower housing forms the bottom surface of the blade holder housing 302. A through-hole is provided in the middle of the top wall of the upper housing 303. The edges of the through-hole extend upward and downward to form a mounting cavity 313. A shaft seal and bearing for the blade shaft to pass through are located within the mounting cavity 313. The upper portion of the blade shaft is exposed in the blade holder housing and connected to the pulverizing blade. The lower portion of the blade shaft is enclosed in the blade holder housing and connected to the upper permanent magnet, allowing the pulverizing blade to be reliably driven by the permanent magnet with low transmission noise.

[0058] Understandably, Figure 8 and Figure 9 As shown, a support platform 326 is provided at the bottom of the knife holder housing 302, and the bottom end of the support platform 326 is the lowest point of the bottom surface of the knife holder housing. The upper permanent magnet is separated from the kitchen horizontal surface by the support platform 326 to achieve the purpose of anti-adsorption.

[0059] In addition to the preferred embodiments described above, the technical solutions protected by this utility model are not limited to the aforementioned embodiments. It should be noted that the combination of multiple technical solutions in any one embodiment, as well as the combination of the technical solution of any one embodiment with the technical solutions in one or more other embodiments, are within the scope of protection of this utility model. Although the utility model has been described in detail above using general descriptions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made to the utility model based on the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by this utility model.

Claims

1. A food processing machine, characterized in that: include: The cup body assembly includes a cup body and a cup cover, and the lower end of the cup body is provided with a cup bottom; A crushing device is detachably arranged at the bottom of the cup, and includes a crushing knife, a knife seat housing, and a permanent magnet arranged in the knife seat housing, wherein the permanent magnet drives the crushing knife to rotate via a transmission shaft; The knife seat housing is integrally formed with an installation cavity for installing a shaft seal and a bearing. The upper end of the installation cavity is provided with a through hole surrounded by a flange, so that the transmission shaft passes through the installation cavity from bottom to top and is connected to the shaft seal and the bearing respectively.

2. The food processing machine according to claim 1, characterized in that The middle part of the top wall of the knife seat shell extends upward and downward respectively to form an upper surrounding edge and a lower surrounding edge, the flange is arranged at the top end of the upper surrounding edge, the upper surrounding edge and the lower surrounding edge are connected and enclosed with the flange to form the installation cavity.

3. The food processing machine according to claim 1 or 2, characterized in that: The knife seat shell includes a side wall and a bottom wall. The lower end of the side wall of the knife seat shell is fixed to the bottom wall by welding, so that a closed cavity is formed in the knife seat shell.

4. The food processing machine according to claim 3, characterized in that The side wall of the knife seat shell is arranged to be tilted upward, and the upper end of the side wall of the knife seat shell is connected to the flange.

5. The food processing machine according to claim 1, wherein The installation cavity comprises a shaft seal installation cavity and a bearing installation cavity, and an annular step is provided at the connection point between the shaft seal installation cavity and the bearing installation cavity.

6. The food processing machine according to claim 5, characterized in that A gasket is provided between the bearing and the annular step, the upper end of the bearing abuts against the annular step through the gasket, and a limiting retaining spring is provided at the lower end of the bearing.

7. The food processing machine according to claim 1, wherein The lower end of the transmission shaft is fixedly connected with a disc body, and the permanent magnet is installed in the disc body. The disc body and the permanent magnet rotate integrally with the transmission shaft.

8. The food processing machine according to claim 1, wherein A first isolating member, a crushing knife and a fixing member are sleeved on the transmission shaft extending out of the through hole from bottom to top. The fixing member is connected to the upper end of the transmission shaft through a thread and abuts against the crushing knife.

9. The food processor according to any one of claims 1 to 2 and 5 to 8, characterized in that: The crushing knife comprises a first blade, a second isolation piece and a second blade in sequence from bottom to top.

10. The food processor according to any one of claims 1 to 2 and 5 to 8, characterized in that: The bottom surface of the knife seat housing is provided with a recess or a boss; and / or the bottom of the cup is provided with a recess or a boss.

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