CN215586691U

CN215586691U - Paper shredder capable of preventing overheating and burning out

Info

Publication number: CN215586691U
Application number: CN202121097623.7U
Authority: CN
Inventors: 吴稳
Original assignee: Guangdong Bangze Chuangke Electric Appliance Co Ltd
Current assignee: Guangdong Bangze Chuangke Electric Appliance Co Ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2022-01-21
Anticipated expiration: 2031-05-20

Abstract

The utility model provides a paper shredder capable of preventing overheating and burning out, which comprises a casing and a cover, wherein a motor and two heat dissipation hobs are arranged in the casing, and a driving gear is fixed on an output shaft of the motor; the heat dissipation hob comprises a hollow rotating shaft, the hollow rotating shaft is connected with the shell through a first bearing, a driven gear and a clamping shaft are fixed outside the hollow rotating shaft, a plurality of cutter wheels are sleeved outside the clamping shaft, a first clamping hole is formed in each cutter wheel, a cooling water pipe is arranged in the hollow rotating shaft and comprises a cooling section and two external sections, the two external sections are connected to two ends of the cooling section, the radius of the cooling section is larger than that of the external sections, and the external sections are connected with the hollow rotating shaft through second bearings; the driving gear is meshed with a driven gear in one of the heat dissipation hobs, and the two driven gears are meshed and connected. The utility model arranges the cooling water pipe structure which can rotate relatively in the knife flywheel, which can effectively prolong the service life of the paper shredder and avoid burning out due to excessive heat accumulation.

Description

Paper shredder capable of preventing overheating and burning out

Technical Field

The utility model relates to a paper shredder, and particularly discloses a paper shredder capable of preventing overheating and burning.

Background

The paper shredder consists of a set of rotating blades, a paper comb and a driving motor, and paper is fed from the middle of the blades and is divided into a plurality of thin straight pieces to achieve the aim of keeping secret.

The kneader is sheared the paper through the hobbing cutter of inside area cutting edge and is realized kibbling, and the paper is sent into inside back of kneader, and two hobbing cutters are rotatory for the paper to realize shredding the paper, the shredded paper in-process, because form great interact power between paper and the hobbing cutter, the inside more heat that can form of kneader, the heat is gathered too much and can be influenced the performance of driving motor isotructure, can take place to burn out condemned problem even.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need to provide a shredder capable of preventing overheating and burning out, which can effectively reduce the temperature of the shredder during operation and avoid burning out and scrapping due to excessive heat accumulation.

In order to solve the problems of the prior art, the utility model discloses a paper shredder capable of preventing overheating and burning out, which comprises a casing and a cover, wherein a motor and two heat dissipation hobs are arranged in the casing;

the heat dissipation hob comprises a hollow rotating shaft, two ends of the hollow rotating shaft are respectively in rotating connection with the shell through two first bearings, a driven gear and a clamping shaft are fixed outside the hollow rotating shaft, the clamping shaft is a prism, a plurality of cutter wheels are sleeved outside the clamping shaft, a gasket is arranged between every two adjacent cutter wheels, a first clamping hole is formed in each cutter wheel, a second clamping hole is formed in each gasket, the clamping shaft is connected in the first clamping hole and the second clamping hole in a clamping mode, a cooling water pipe is arranged in the hollow rotating shaft and comprises a cooling section and two external sections, the two external sections are connected to two ends of the cooling section, the radius of the cooling section is larger than that of the external sections, and the two external sections are respectively in rotating connection with the hollow rotating shaft through two second bearings;

the driving gear is meshed with a driven gear in one of the heat dissipation hobs, and the two driven gears are meshed and connected.

Furthermore, a push-pull yielding port is arranged in the machine shell, a waste material box penetrates through the push-pull yielding port, and the waste material box is located under the two heat dissipation hobs.

Furthermore, one side of the waste material box, which is far away from the shell, is provided with a push-pull handle.

Furthermore, a ceramic layer is covered in the hollow rotating shaft and is positioned between the hollow rotating shaft and the cooling section.

Furthermore, a positioning plate is fixed at one end of the clamping shaft, a positioning cover is arranged at the other end of the clamping shaft, a yielding hole is formed in the positioning cover, and the hollow rotating shaft penetrates through the yielding hole.

Furthermore, one side of the positioning cover close to the positioning plate is provided with a clamping groove, and the clamping groove is buckled at one end of the clamping shaft far away from the positioning plate.

The utility model has the beneficial effects that: the utility model discloses a paper shredder capable of preventing overheating and burning out, which is provided with a special heat-radiating hob structure, wherein a cooling water pipe structure capable of rotating relatively is arranged in a cutter wheel, the temperature of the cutter wheel can be effectively reduced in the paper shredding process, so that the temperature of the paper shredder during working can be effectively reduced, the service life of the paper shredder can be effectively prolonged, meanwhile, burning out and scrapping caused by excessive heat accumulation can be avoided, and the cooling water pipe is arranged in a hollow rotating shaft, so that the heat absorption and cooling efficiency of the cooling water pipe is high, and the paper shredding work of the whole structure is not influenced.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic top view of the present invention.

FIG. 4 is a schematic cross-sectional view taken along line A-A' of FIG. 3.

Fig. 5 is an enlarged structural view of B in fig. 4 according to the present invention.

Fig. 6 is an exploded view of the heat sink roller cutter according to the present invention.

Reference numerals: the paper feeding device comprises a machine shell 10, a push-pull concession port 11, a waste box 12, a push-pull handle 121, a machine cover 20, a paper feeding port 21, a motor 30, a driving gear 31, a heat dissipation hob 40, a hollow rotating shaft 41, a first bearing 411, a ceramic layer 412, a driven gear 42, a clamping shaft 43, a positioning plate 431, a cutter wheel 44, a first clamping hole 441, a gasket 45, a second clamping hole 451, a cooling water pipe 46, a cooling section 461, an external section 462, a second bearing 47, a positioning cover 48, a concession hole 481 and a clamping groove 482.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 to 6.

The embodiment of the utility model discloses a paper shredder capable of preventing overheating and burning out, which comprises a casing 10 and a cover 20, wherein a motor 30 and two heat dissipation hobs 40 are arranged in the casing 10, a paper inlet 21 is arranged in the cover 20, the paper inlet 21 is positioned at the same side of the two heat dissipation hobs 40, namely, a gap formed between the two heat dissipation hobs 40 is over against the paper inlet 21, a driving gear 31 is coaxially fixed on an output shaft of the motor 30, and a shell of the motor 30 is fixedly connected with the casing 10;

each heat-dissipating hob 40 has the following structure: the heat-dissipating hob 40 comprises a hollow rotating shaft 41, two ends of the hollow rotating shaft 41 are respectively rotatably connected with the casing 10 through two first bearings 411, a driven gear 42 and a clamping shaft 43 are coaxially fixed outside the hollow rotating shaft 41, the driven gear 42 is located outside one end of the clamping shaft 43, the clamping shaft 43 is a regular polygon prism and can facilitate the rotation alignment operation, a plurality of cutter wheels 44 are sleeved outside the clamping shaft 43, a gasket 45 is arranged between every two adjacent cutter wheels 44, the diameter of the gasket 45 is smaller than that of the cutter wheels 44, the thickness of the gasket 45 is equal to that of the cutter wheels 44, so as to ensure that a meshed structure can be formed between the two heat-dissipating hobs 40, a first clamping hole 441 is arranged in the cutter wheel 44, a second clamping hole 451 is arranged in the gasket 45, the clamping shaft 43 is connected in each first clamping hole 441 and each second clamping hole 451 in a clamping manner, a cooling water pipe 46 is arranged in the hollow rotating shaft 41, the cooling water pipe 46 comprises a cooling section 461 and two external sections 462, the two external sections 462 are connected to two ends of the cooling section 461, the radius of the cooling section 461 is larger than that of the external sections 462, the two external sections 462 are respectively rotatably connected with the inside of the hollow rotating shaft 41 through two second bearings 47, and the two ends of the cooling water pipe 46 are narrowed and then connected with the hollow rotating shaft 41 through the second bearings 47, so that the cooling section 461 of the cooling water pipe 46 can be ensured to be fully contacted with the inner wall of the hollow rotating shaft 41, the cooling effect is ensured, and the installation and the operation are convenient;

the driving gear 31 is meshed with the driven gear 42 in one heat dissipation hob 40, the hollow rotating shaft 41 is connected with the motor 30 through the driving gear 31 and the driven gear 42, the connection and use of the internal cooling water pipe 46 cannot be influenced, the two driven gears 42 are meshed and connected, the crushing effect of clamping and advancing can be formed between the two driven gears 42, the reliability of paper shredding can be effectively ensured, and paper can be continuously rolled into the shell 10 in the paper shredding process.

The two ends of the cooling water pipe 46 are respectively connected with a water supply mechanism and a recovery mechanism, the water supply mechanism can be a water pump connected with a water tank, and the recovery mechanism can be a container such as a water storage bucket. When paper shredding is carried out, paper is placed into the paper inlet 21, the motor 30 drives one driven gear 42 to rotate through the driving gear 31, the other driven gear 42 rotates along with the driving gear, and the two heat dissipation hobs 40 drive the paper to advance and achieve shredding; because the second bearing 47 rotates the connection effect, the cooling water pipe 46 that is connected with external mechanism can not follow the hollow rotating shaft 41 and rotate, external water supply mechanism inputs cooling water into the cooling water pipe 46, the direct contact with the inner wall of the hollow rotating shaft 41 of the cooling section 461 can effectively cool the hollow rotating shaft 41, and then each cutter wheel 44 is cooled, the heat produced by friction in the paper shredding process can be effectively reduced, the stability of the paper shredding action can be effectively improved, meanwhile, the service life of the paper shredder can be ensured, and the paper shredder can be effectively prevented from being burnt out due to overheating.

In this embodiment, a push-pull allowing opening 11 is formed in the housing 10, a waste material box 12 penetrates through the push-pull allowing opening 11, and the waste material box 12 is located under the two heat dissipation hobs 40, so that the waste paper shredding can be conveniently collected and cleaned.

Based on the above embodiment, the side of the waste material box 12 away from the housing 10 is provided with the push-pull handle 121, and the push-pull handle 121 may be a concave groove, and the structure of the concave groove can effectively ensure the regular outer contour of the paper shredder, and can reduce the occupied space of the whole structure.

In the embodiment, the ceramic layer 412 is covered inside the hollow rotating shaft 41, the ceramic layer 412 is located between the hollow rotating shaft 41 and the cooling section 461, friction between the cooling section 461 can be effectively reduced through the ceramic layer 412, and therefore stability of the rotating operation is effectively improved, and the ceramic layer 412 has good heat conduction performance, and the cooling effect of the cooling section 461 on the hollow rotating shaft 41 and the upper cutter wheel 44 can be effectively ensured.

In this embodiment, a positioning plate 431 is fixed to one end of the blocking shaft 43, a positioning cover 48 is disposed at the other end of the blocking shaft 43, all the cutter wheels 44 and gaskets 45 in the same heat dissipation hob 40 are located between the positioning plate 431 and the positioning cover 48, an abdicating hole 481 is disposed in the positioning cover 48, the hollow rotating shaft 41 penetrates through the abdicating hole 481, the positions of the side-by-side cutter wheels 44 and the gaskets 45 can be effectively limited by the positioning plate 431 matching with the positioning cover 48, and the first bearing 411 is located on one side of the positioning cover 48 away from the cutter wheels 44.

Based on the above embodiment, one side of the positioning cover 48 close to the positioning plate 431 is provided with the locking groove 482, and the locking groove 482 is buckled at one end of the locking shaft 43 far away from the positioning plate 431, so that the structural stability of the heat dissipation hob 40 can be effectively improved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The paper shredder capable of preventing overheating and burning out is characterized by comprising a casing (10) and a cover (20), wherein a motor (30) and two heat dissipation hobs (40) are arranged in the casing (10), a paper inlet (21) is arranged in the cover (20), the paper inlet (21) is positioned on the same side of the two heat dissipation hobs (40), and a driving gear (31) is fixed on an output shaft of the motor (30);

the heat dissipation hob (40) comprises a hollow rotating shaft (41), two ends of the hollow rotating shaft (41) are respectively connected with the casing (10) in a rotating mode through two first bearings (411), a driven gear (42) and a clamping shaft (43) are fixed outside the hollow rotating shaft (41), the clamping shaft (43) is prismatic, a plurality of cutter wheels (44) are sleeved outside the clamping shaft (43), a gasket (45) is arranged between every two adjacent cutter wheels (44), a first clamping hole (441) is arranged in each cutter wheel (44), a second clamping hole (451) is arranged in each gasket (45), the clamping shaft (43) is connected to the first clamping hole (441) and the second clamping hole (451) in a clamping mode, a cooling water pipe (46) is arranged in the hollow rotating shaft (41), and each cooling water pipe (46) comprises a cooling section (461) and two external sections (462), the two external sections (462) are connected to two ends of the cooling section (461), the radius of the cooling section (461) is larger than that of the external sections (462), and the two external sections (462) are respectively in rotary connection with the hollow rotating shaft (41) through two second bearings (47);

the driving gear (31) is meshed with a driven gear (42) in one of the heat dissipation hobs (40), and the two driven gears (42) are meshed.

2. The paper shredder capable of preventing overheating and burning out according to claim 1, wherein a push-pull position-giving opening (11) is arranged in the casing (10), a waste material box (12) is arranged in the push-pull position-giving opening (11) in a penetrating manner, and the waste material box (12) is positioned right below the two heat dissipation rolling cutters (40).

3. The shredder of claim 2, wherein the side of the waste bin (12) away from the housing (10) is provided with a push-pull handle (121).

4. The paper shredder according to claim 1, wherein the hollow rotating shaft (41) is covered with a ceramic layer (412), and the ceramic layer (412) is located between the hollow rotating shaft (41) and the cooling section (461).

5. The paper shredder capable of preventing overheating and burning out according to claim 1, wherein a positioning plate (431) is fixed at one end of the clamping shaft (43), a positioning cover (48) is arranged at the other end of the clamping shaft (43), an abdicating hole (481) is arranged in the positioning cover (48), and the hollow rotating shaft (41) penetrates through the abdicating hole (481).

6. The paper shredder capable of preventing overheating and burning out as claimed in claim 5, wherein a side of the positioning cover (48) close to the positioning plate (431) is provided with a blocking groove (482), and the blocking groove (482) is buckled at one end of the blocking shaft (43) far away from the positioning plate (431).