CN210697375U

CN210697375U - A high-efficient sealed blade holder subassembly for food mixer

Info

Publication number: CN210697375U
Application number: CN201921331447.1U
Authority: CN
Inventors: 黄伟; 方廷余
Original assignee: Guangzhou Lont Electronic Co ltd
Current assignee: Guangzhou Lont Electronic Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-06-09
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses an efficient seal blade holder subassembly for food mixer, including the blade, the arbor, first oil blanket, the blade holder, transmission tooth, ball bearing, the second oil blanket, third oil blanket and bearing housing, the lower extreme of arbor passes behind the centre bore of blade holder and is connected with transmission tooth's upper end, first oil blanket is installed between the upper end of blade and blade holder and the suit is outside the arbor, the equal open-ended bearing housing in upper and lower both ends is installed in the blade holder, ball bearing installs in the bearing housing and the suit is outside the arbor, second oil blanket and third oil blanket are installed respectively in ball bearing's top and below and the suit is outside the arbor respectively. The utility model discloses an installation bearing housing and two oil seals of installation and ball bearing in the bearing housing in the blade holder can effectively avoid stirring the interior liquid of cup and spill over, replace traditional copper base oiliness bearing with ball bearing, can stop heavy metal and oil stain seepage phenomenon fundamentally, make it arrange the dish washer in and wash, can bear high-power load moreover.

Description

A high-efficient sealed blade holder subassembly for food mixer

Technical Field

The utility model relates to a blade holder subassembly for food mixer especially relates to an efficient sealed blade holder subassembly for food mixer.

Background

Food mixer also is called food mixer, food processor etc. is a general name of equipment that cuts up the stirring to food such as vegetables, fruit, meat, its basic structure includes the host computer and installs the stirring cup on the host computer, be equipped with the blade holder in the stirring cup, the arbor is installed in the rotation on the blade holder, install the blade on the arbor, the host computer includes the host computer base and installs the host computer shell on the host computer base, install agitator motor in the host computer shell, agitator motor's pivot is connected with the arbor, blade holder and each parts group that is connected with the blade holder are called blade holder subassembly together.

As shown in fig. 1, the knife holder assembly of the conventional food mixer mainly comprises a blade 1, a knife shaft 3, an oil seal 2, a knife holder 5, a copper-based oil-retaining bearing 4 and a transmission tooth 6, wherein the oil seal 2 is generally a sealing ring with a splayed axial section, which is a single-layer waterproof sealing structure, for example, the knife holder assembly disclosed by the utility model with the publication number of "CN 202355277" is the structure.

As the tool apron component of the traditional food mixer only has one layer of waterproof sealing structure, namely the oil seal 2, the rotating speed of the mixing motor is generally 18000-25000PRM, and the oil seal 2 can be failed due to the problems of abnormal abrasion of the single-layer sealing structure, improper installation of operators, uneven material vulcanization and the like. After the oil seal 2 fails, the problem of water leakage can be caused, and in severe cases, the oil can enter the main machine shell from the upper hole of the main machine shell to cause the short circuit of a stirring motor, so that danger is caused, and oil of the copper-based oil-containing bearing 4 and abraded metal powder can permeate into a stirring cup to pollute food and influence the health of a user; moreover, the knife holder assembly of the traditional food mixer cannot be put into a dishwasher or immersed into water for cleaning due to poor sealing effect, which brings inconvenience to consumers.

In addition, the requirements of the copper-based oil-retaining bearing 4 of the cutter holder component of the traditional food mixer on the component formula, the sintering process, the oil penetration process, the roughness of a friction contact surface and the like are high, if the control is lacked, the concentricity of the cutter shaft 3 or the mixing cup connected to the mixing motor is poor and the like, the service life of the cutter holder component is directly influenced, the problems of large heat productivity, large noise, short service life and the like of the copper-based oil-retaining bearing 4 during long-time high-speed rotating mixing are solved, the copper-based oil-retaining bearing is not suitable for being driven by the mixing motor with the power of more than 500W, on one hand, the mixing power of the mixer is required to be higher and higher by consumers, the former structure is not suitable for the use of a high-power mixer, the copper-based oil-retaining bearing 4 and the cutter shaft 3 are in surface-surface rotating, finally, the copper-based oil-retaining bearing 4 is over-high in temperature, the plastic tool apron melts glue, and metal powder and oil stains which have unpleasant smell and wear penetrate into the stirring cup to affect the health of a human body. And the copper-based oil-retaining bearing 4 exposed in the tool apron component can have harmful oil stain exudation after use, the cleaning powder and the cleaning agent of the dish-washing machine can also cause oxidation to the copper material of the copper-based oil-retaining bearing 4 and decomposition of oil in the copper-based oil-retaining bearing 4 in a high-temperature environment, and meanwhile, tableware which is put into the dish-washing machine together with the stirring cup for cleaning is polluted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an all-round high-efficient sealed blade holder subassembly that is used for food mixer in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

an efficient sealing tool apron assembly for a food mixer comprises a blade, a cutter shaft, a first oil seal, a tool apron and transmission teeth, wherein the blade is installed at the upper end of the cutter shaft, the lower end of the cutter shaft penetrates through a center hole of the tool apron and then is connected with the upper end of the transmission teeth, and the first oil seal is installed between the blade and the upper end of the tool apron and sleeved outside the cutter shaft; the efficient sealing tool apron assembly further comprises a ball bearing, a second oil seal, a third oil seal and a bearing sleeve, wherein the upper end and the lower end of the bearing sleeve are both provided with openings, the bearing sleeve is arranged in the tool apron, the ball bearing is arranged in the bearing sleeve and sleeved outside the cutter shaft, and the second oil seal and the third oil seal are respectively arranged above and below the ball bearing and sleeved outside the cutter shaft.

Further, in order to carry out spacing in order to prevent that blade, arbor from reciprocating and guarantee that first oil blanket can reliably be fixed, high-efficient sealed blade holder subassembly still includes the snap ring of circle shape, lie in on the outer wall circumference of arbor the position of ball bearing below is equipped with the spacing groove, the snap ring install in spacing inslot can prevent the arbor reciprocates.

Further, in order to reliably fix a third oil seal, the efficient sealing tool apron assembly further comprises a metal gasket and a metal fixing ring, the metal gasket is mounted between the ball bearing and the third oil seal and sleeved outside the cutter shaft, the inner diameter of the metal gasket is larger than the outer diameter of the cutter shaft, the rotation of the cutter shaft is not influenced completely, the metal gasket is in interference fit with the inner wall of the bearing sleeve, the metal fixing ring is mounted at the lower end of the bearing sleeve, and the third oil seal is mounted on the metal fixing ring.

Preferably, in order to improve the sealing effect, the first oil seal is a splayed sealing ring and is in interference fit with the cutter shaft, the second oil seal and the outer circumferential surface of the third oil seal are provided with a plurality of thin convex rings in interference fit with the bearing sleeve, and the upper end surface of the second oil seal is provided with a waterproof groove and is in interference fit with the cutter holder.

Further, in order to improve the sealing effect, the second oil seal and the third oil seal are KC type or KB type oil seals, and food-grade lubricating oil is arranged between two sealing lips of the second oil seal and the third oil seal.

Preferably, in order to facilitate assembly of the cutter shaft, the lower end of the cutter shaft is provided with an external thread for connecting with the transmission teeth, and the outer peripheral surface of the lower section of the cutter shaft close to the external thread is a conical surface with a large upper part and a small lower part.

Further, in order to improve the sealing effect, the inner wall of the cutter holder is in interference fit with the bearing sleeve.

The beneficial effects of the utility model reside in that:

the utility model discloses an installation bearing housing and two oil blanket and ball bearing of installation in the bearing housing in the blade holder, realized the multiple seal structure from top to bottom of tool setting axle, can effectively avoid stirring cup in the liquid overflow, replace traditional copper base oil-retaining bearing with ball bearing, can stop heavy metal and oil stain seepage phenomenon fundamentally, make it can arrange the dish washer in and wash, and can bear high-power load, satisfy the application demand, and can reduce the noise, reduce 5-10 decibels than copper base oil-retaining bearing, and improved the blade holder subassembly life-span; by arranging the clamping ring and adopting the measures such as interference fit and the like, the sealing effect is further improved, the knife holder assembly can completely bear high-temperature and high-pressure cleaning in the dish-washing machine, dish-washing agents and liquid cannot enter the bearing, and the product adaptation degree and the requirements of consumers are improved; the blade holder subassembly is applicable to in the similar stirring sword cutting class electrical apparatus equally.

Drawings

FIG. 1 is a front sectional view of a conventional food blender with a blade holder assembly assembled;

FIG. 2 is a schematic sectional view of the assembled high efficiency seal cartridge assembly for a food blender of the present invention;

FIG. 3 is a schematic sectional view of the efficient sealing blade holder assembly for a food mixer according to the present invention, which is shown in a smaller scale than FIG. 2;

fig. 4 is a schematic sectional view of a food mixer with the efficient sealing blade holder assembly according to the present invention. The scale in the figure is smaller than in figure 3.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 2 and fig. 3, the high-efficiency sealing knife holder assembly for a food mixer of the present invention comprises a blade 7, a knife shaft 9, a first oil seal 8, a knife holder 17, a transmission tooth 18, a ball bearing 11, a second oil seal 10, a third oil seal 15, a bearing sleeve 12, a ring-shaped snap ring 13, a metal washer 14 and a metal fixing ring 16, wherein the blade 7 is installed at the upper end of the knife shaft 9, the lower end of the knife shaft 9 is provided with an external thread for connecting with the transmission tooth 18, the outer peripheral surface of the lower section of the knife shaft 9 near the external thread is a conical surface with a large upper part and a small lower part, the lower end of the knife shaft 9 passes through the center hole of the knife holder 17 and then is connected with the upper end of the transmission tooth 18, the first oil seal 8 is installed between the upper ends of the blade 7 and the knife holder 17 and is sleeved outside the knife shaft 9, the bearing sleeve, the ball bearing 11 is arranged in the bearing sleeve 12 and sleeved outside the cutter shaft 9, and the second oil seal 10 and the third oil seal 15 are respectively arranged above and below the ball bearing 11 and sleeved outside the cutter shaft 9; a limiting groove is formed in the circumference of the outer wall of the cutter shaft 9 and below the ball bearing 11, a clamping ring 13 is mounted in the limiting groove and can prevent the cutter shaft 9 from moving up and down, a metal gasket 14 is mounted between the ball bearing 11 and a third oil seal 15 and sleeved outside the cutter shaft 9, the inner diameter of the metal gasket 14 is larger than the outer diameter of the cutter shaft 9 and does not influence the rotation of the cutter shaft 9 completely, the metal gasket 14 is in interference fit with the inner wall of the bearing sleeve 12, a metal fixing ring 16 is mounted at the lower end of the bearing sleeve 12, and the third oil seal 15 is mounted on the metal fixing ring 16; the first oil seal 8 is a splayed seal ring and is in interference fit with the cutter shaft 9, the second oil seal 10 and the third oil seal 15 are KC type or KB type oil seals, food-grade lubricating oil is arranged between two seal lips of the second oil seal 10 and the third oil seal 15, a plurality of thin convex rings in interference fit with the bearing sleeve 12 are arranged on the outer circumferential surfaces of the second oil seal 10 and the third oil seal 15, and a waterproof groove is formed in the upper end surface of the second oil seal 10 and is in interference fit with the inner wall of the top of the cutter holder 17.

As shown in fig. 2 and 3, during assembly, the first oil seal 8 is mounted on the cutter shaft 9 in a specific direction, and the flared mouth of the first oil seal is downward, the outer diameter of the cutter shaft 9 is in interference fit with the inner diameter of the first oil seal 8, the upper end surface of the first oil seal 8 is attached to the bottom surface of the blade 7, so that the first oil seal 8 can rotate along with the blade 7 when the blade 7 rotates, two vertically parallel ball bearings 11 and a second oil seal 10 are sequentially pressed into the bearing sleeve 12 and in interference fit, the bearing sleeve 12 presses the above components and then is pressed into the tool apron 17 in an assembly form and is pressed in place, at this time, the upper end surface of the second oil seal 10 is tightly matched with the inner wall of the top of the tool apron 17, the upper end surface of the second oil seal 10 is provided with a convex seal groove in a press fit manner, the side surface of the second oil seal 10 is also provided with a convex seal groove in a tight fit with the inner wall of the side surface of the bearing sleeve 12, and the purpose that liquid cannot flow into, the blade 7 and the first oil seal 8 are assembled in a tool apron 17 together and penetrate through a bearing sleeve 12 and parts thereof, a snap ring 13 is fixed in a limiting groove through an inclined plane at the lower end of a cutter shaft 9, at the moment, a certain pre-pressing amount is reserved between the lip edge of the first oil seal 8 and the tool apron 17 for sealing and waterproofing, a metal gasket 14 and a third oil seal 15 are sequentially placed, the outer surface of the third oil seal 15 is in interference fit with the inner wall of the bearing sleeve 12, the side surface and the end surface of the third oil seal 15 are provided with a convex sealing groove, then a metal fixing ring 16 is pressed in interference fit with the outer wall of the lower end of the bearing sleeve 12 to play a role in waterproofing and preventing the metal gasket 14 and the third oil seal 15 from falling off, the transmission teeth 18 are provided with threads and holes corresponding to the lower end threads of the cutter shaft 9, the transmission teeth 18 are rotationally locked to the cutter shaft 9, a certain distance is reserved between the upper end surface of, the up end of snap ring 13 and ball bearing 11's lower terminal surface contact, it is spacing to ball bearing 11, arbor 9 is at the rotation during operation,

arbor

9 and 11 frictions or little friction of ball bearing, so the mixer can work for a long time, the too high sol problem that leads to of frictional temperature can not appear, scribble proper amount food level lubricating oil between the seal lip of second oil blanket 10 and third oil blanket 15, the seal lip contacts with a small amount of interference with arbor 9, play and prevent that liquid from arbor 9 position from entering into ball bearing 11 and overflowing the outside effect of blade holder 17, and can adapt to the long time work. The multiple waterproof sealing structure can completely avoid liquid overflow and meet the requirements of prolonging the service life of the tool apron component, reducing noise and the like. The tool apron 17 is made of stainless steel, or a combination form of a plastic tool apron and the stainless steel, the metal fixing ring 16 and the bearing sleeve 12 are made of stainless steel, so that the whole dishwasher cleaning requirement can be met, harmful substances cannot seep out, the transmission teeth 18 can be made of stainless steel materials or nylon plastics, and other materials which are corrosion-resistant, rust-resistant and high in strength can also be used.

As shown in fig. 4, when the sealing tool apron assembly 20 (representing the tool apron assembly) is used, the sealing tool apron assembly 20 is installed in a stirring cup 19 of a food stirring machine and connected with a rotating shaft of a stirring motor 21 of a host machine 22, a tool apron 17 and the assembly thereof are fixed at the bottom of the stirring cup 19, the tool apron 17 can be fixed or detachable, the stirring motor 21 is installed in the host machine 22, and a flexible transmission component matched with a transmission tooth 18 is installed at the upper end of the rotating shaft of the stirring motor 21, so that the stirring cup 19 and the assembly thereof can be separated from the host machine 22, which is a conventional structure.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims

1. The utility model provides an efficient seal blade holder subassembly for food mixer, includes blade, arbor, first oil blanket, blade holder and transmission tooth, the blade is installed the upper end of arbor, the lower extreme of arbor passes behind the centre bore of blade holder with the upper end of transmission tooth is connected, first oil blanket is installed the blade with between the upper end of blade holder and the suit be in outside the arbor, its characterized in that: the efficient sealing tool apron assembly further comprises a ball bearing, a second oil seal, a third oil seal and a bearing sleeve, wherein the upper end and the lower end of the bearing sleeve are both provided with openings, the bearing sleeve is arranged in the tool apron, the ball bearing is arranged in the bearing sleeve and sleeved outside the cutter shaft, and the second oil seal and the third oil seal are respectively arranged above and below the ball bearing and sleeved outside the cutter shaft.

2. The high efficiency sealed blade holder assembly for a food blender of claim 1, wherein: the efficient sealing tool apron assembly further comprises a clamping ring in a circular shape, a limiting groove is formed in the position, below the ball bearing, of the circumference of the outer wall of the cutter shaft, and the clamping ring is installed in the limiting groove and can prevent the cutter shaft from moving up and down.

3. The high efficiency sealed blade holder assembly for a food blender of claim 1, wherein: the efficient sealing tool apron assembly further comprises a metal gasket and a metal fixing ring, the metal gasket is mounted between the ball bearing and the third oil seal and sleeved outside the cutter shaft, the inner diameter of the metal gasket is larger than the outer diameter of the cutter shaft, the cutter shaft is not affected completely in rotation, the metal gasket is in interference fit with the inner wall of the bearing sleeve, the metal fixing ring is mounted at the lower end of the bearing sleeve, and the third oil seal is mounted on the metal fixing ring.

4. A high efficiency sealed blade holder assembly for a food blender as recited in claim 1, 2 or 3, wherein: the first oil seal is a splayed seal ring and is in interference fit with the cutter shafts, the second oil seal and the outer circumferential surface of the third oil seal are provided with a plurality of thin convex rings in interference fit with the bearing sleeve, and the upper end surface of the second oil seal is provided with a waterproof groove and is in interference fit with the cutter holder.

5. The high efficiency sealed blade holder assembly for a food blender of claim 4, wherein: the second oil seal and the third oil seal are KC type or KB type oil seals, and food-grade lubricating oil is arranged between the two sealing lips of the second oil seal and the third oil seal.

6. A high efficiency sealed blade holder assembly for a food blender as recited in claim 1, 2 or 3, wherein: the lower end of the cutter shaft is provided with an external thread used for being connected with the transmission teeth, and the peripheral surface of the lower section of the cutter shaft close to the external thread is a conical surface with a large upper part and a small lower part.

7. A high efficiency sealed blade holder assembly for a food blender as recited in claim 1, 2 or 3, wherein: the inner wall of the cutter holder is in interference fit with the bearing sleeve.