Durable pulping machine

Abstract

The utility model relates to a durable pulping machine which comprises a shell and a motor, the motor is fixedly connected to the lower end of the shell, the output end of the motor is connected with a transmission shaft, a fixed abrasive disc and a rotary abrasive disc are arranged in the shell, the transmission shaft is connected with the rotary abrasive disc, an upper bearing and a lower bearing are sleeved on the transmission shaft, and bearing seats are arranged outside the upper bearing and the lower bearing. The upper bearing is a deep groove ball rolling bearing, and the lower bearing is a tapered roller bearing. According to the durable pulping machine, faults of the pulping machine are reduced, and the production benefits of enterprises are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refiners, in particular to a durable refiner. Background Art

[0002] The refiner consists of a refining chamber, a transmission mechanism, a base, a motor, etc. The refining chamber consists of a fixed refining disc fixed on the housing and the movable seat and a rotating refining disc installed on the rotating disk, forming a refining zone. The refining pressure is controlled by adjusting the distance between the fixed refining disc and the rotating refining disc to meet the rice pulp requirements of various slurries. The raw materials are kneaded and squeezed by the grinding stones in the refining zone to complete the refining process.

[0003] In the prior art, the rotating grinding disc of the pulping machine is connected to the transmission shaft, and two bearings are arranged on the transmission shaft, namely the upper bearing deep groove ball rolling bearing (generally adopting the 6211 model) and the lower bearing plane thrust ball bearing (generally adopting the 51111 model). The upper bearing is easy to break and needs to be replaced frequently, and the average failure interval is 60 days. Therefore, the failure rate of the existing pulping machine is extremely high and the failure is frequent, which not only increases the use cost, but also reduces the production efficiency and affects the enterprise benefits. Utility Model Content

[0004] The purpose of the utility model is to design a durable refiner so as to reduce the occurrence of failures of the refiner and improve the production efficiency of the enterprise.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A durable pulping machine comprises a shell and a motor, wherein the motor is fixedly connected to the lower end of the shell, the output end of the motor is connected to a transmission shaft, a fixed grinding plate and a rotating grinding plate are arranged in the shell, the transmission shaft is connected to the rotating grinding plate, an upper bearing and a lower bearing are sleeved on the transmission shaft, bearing seats are arranged on the outside of the upper bearing and the lower bearing, the upper bearing is a deep groove ball rolling bearing, and the lower bearing is a tapered roller bearing.

[0007] Furthermore, in the above-mentioned durable pulping machine, the model of the deep groove ball rolling bearing is 6211.

[0008] Furthermore, in the above-mentioned durable refiner, the tapered roller bearing is a crossed tapered roller bearing.

[0009] Furthermore, in the above-mentioned durable pulping machine, the model of the cross-tapered roller bearing is 32011.

[0010] Furthermore, in the above-mentioned durable refiner, a skeleton oil seal is provided below the tapered roller bearing.

[0011] Furthermore, in the above-mentioned durable pulping machine, two skeleton oil seals are provided.

[0012] Furthermore, in the above-mentioned durable pulping machine, a water retaining ring is provided above the deep groove ball rolling bearing.

[0013] Furthermore, in the above-mentioned durable pulping machine, a shaft sleeve is provided on the transmission shaft, and the water retaining ring is fixedly connected to the shaft sleeve.

[0014] Furthermore, in the above-mentioned durable pulping machine, the water retaining ring is made of nylon plate, plastic plate, polyurethane plate or rubber plate.

[0015] Furthermore, in the above-mentioned durable pulping machine, a drainage flow hole is opened on the bearing seat, the drainage flow hole is inclined downward, the upper end of the drainage flow hole is connected to the upper gap of the water retaining ring, and a drainage pipe is provided in the drainage flow hole.

[0016] Compared with the prior art, the utility model has the following beneficial effects: compared with the prior art, the plane thrust ball bearing can simultaneously meet higher speeds and withstand axial thrust loads but cannot balance radial forces, and only relies on single-point support positioning of deep groove ball rolling bearings, and the torque is short, so the bearings are easily shaken and damaged during operation. The durable refiner provided by the utility model disperses the load of the deep groove ball rolling bearings through tapered roller bearings, and the combined action of the two bearings makes the bearings less likely to be damaged. Practical application shows that after adopting the technical solution of the utility model, the service life of the refiner is extended by more than 3 times, which greatly reduces the occurrence of failures, reduces the cost of use, and brings obvious benefits to the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of Example 3 of the utility model;

[0020] The names of the components marked in the figure are as follows:

[0021] 1. Shell; 11. Discharge channel; 2. Motor; 21. Transmission shaft; 22. Coupling; 3. Fixed grinding disc; 31. Rotating grinding disc; 4. Bearing seat; 41. Upper bearing; 42. Lower bearing; 43. Drainage pipe; 5. Water retaining ring; 6. Skeleton oil seal. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] Please refer to Figure 1-2 .

[0024] Embodiment 1: A durable pulping machine comprises a shell 1 and a motor 2. The shell 1 is cylindrical, with a cover on the upper end of the shell 1, a support foot on the lower end of the shell 1, a discharge channel 11 on the side of the shell 1, and a fixed grinding plate 3 and a rotating grinding plate 31 in the shell 1. The fixed grinding plate 3 is fixedly connected to the shell 1, and the rotating grinding plate 31 is fixedly connected to the transmission shaft 21. The transmission shaft 21 is fixedly connected to the output end of the motor 2 via a coupling 22. The motor 2 is fixedly connected to the lower end of the shell 1. The above belongs to the prior art and will not be repeated here.

[0025] An upper bearing 41 and a lower bearing 42 are sleeved on the transmission shaft 21. A bearing seat 4 is provided outside the upper bearing 41 and the lower bearing 42. The bearing seat 4 is fixedly connected to the housing 1. The upper bearing 41 is a deep groove ball rolling bearing. In the present embodiment, the model of the deep groove ball rolling bearing is 6211. The lower bearing 42 is a tapered roller bearing. In the present embodiment, the tapered roller bearing is a cross tapered roller bearing, and the model is 32011.

[0026] Working principle of this embodiment: This embodiment provides a durable pulping machine, in which the upper bearing 41 adopts a deep groove ball rolling bearing, and the lower bearing 42 adopts a tapered roller bearing, and is a cross tapered roller bearing. The deep groove ball rolling bearing mainly balances the radial load, and the internal structure of the cross tapered roller bearing adopts the rollers to be arranged at 90° perpendicular to each other, and spacers or isolation blocks are installed between the rollers to prevent the rollers from tilting or rubbing against each other, effectively preventing the increase of rotational torque, because the rollers are arranged perpendicular to each other on the groove rolling surface through spacers or isolation blocks. This design allows the cross tapered roller bearing to withstand larger radial loads, axial loads, torque loads and other loads in all directions, thereby dispersing part of the load of the deep groove ball rolling bearing. Compared with the prior art, the flat thrust ball bearing can simultaneously meet higher speeds and withstand axial thrust loads but cannot balance radial forces, and only relies on deep groove ball rolling bearings for single-point support positioning and short torque, which makes it easy for the bearings to shake and damage during operation. The durable refiner provided in this embodiment disperses the load of the deep groove ball rolling bearings through tapered roller bearings. The combined effect of the two bearings makes the bearings less likely to be damaged. Practical applications have shown that after adopting the technical solution of this embodiment, the service life of the refiner is extended by more than 3 times, which greatly reduces the occurrence of failures, reduces the cost of use, and brings obvious benefits to the enterprise.

[0027] Example 2

[0028] On the basis of Example 1, a skeleton oil seal 6 is provided below the tapered roller bearing of Example 2 to prevent lubricating oil leakage. In some other specific embodiments of the utility model, two skeleton oil seals 6 can be provided, and the two skeleton oil seals 6 are arranged adjacent to each other, which has a better sealing effect than a single oil seal.

[0029] Example 3

[0030] On the basis of Example 2, a shaft sleeve (not shown in the figure) is sleeved on the transmission shaft 21 of Example 3 and above the deep groove ball rolling bearing, and a water retaining ring 5 is sleeved on the shaft sleeve to prevent slurry from entering the lower bearing. The water retaining ring 5 is fixedly connected to the shaft sleeve by radial top screws, which belongs to the prior art and is not repeated here. The water retaining ring 5 is made of impermeable materials such as nylon plates, plastic plates, polyurethane plates or rubber plates. There is a gap above the water retaining ring 5, which can accommodate some slurry, and has a certain buffering effect on the slurry entering the lower bearing. Further, a drainage hole is opened on the bearing seat 4, and there are multiple drainage holes distributed circumferentially on the bearing seat 4. The upper end of the drainage hole is connected to the gap above the water retaining ring 5, and the drainage hole is inclined downward. A drainage pipe 43 is provided in the drainage hole. The slurry in the gap blocked by the water retaining ring 5 can be discharged through the drainage pipe 43 to prevent the slurry from penetrating into the lower bearing for a long time.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A durable pulping machine, comprising a housing (1) and a motor (2), wherein the motor (2) is fixedly connected to the lower end of the housing (1), the output end of the motor (2) is connected to a transmission shaft (21), a fixed grinding plate (3) and a rotating grinding plate (31) are arranged in the housing (1), the transmission shaft (21) is connected to the rotating grinding plate (31), an upper bearing (41) and a lower bearing (42) are sleeved on the transmission shaft (21), and a bearing seat (4) is arranged outside the upper bearing (41) and the lower bearing (42), wherein: The upper bearing (41) is a deep groove ball bearing, and the lower bearing (42) is a tapered roller bearing.

2. The durable refiner according to claim 1, characterized in that: The model of the deep groove ball bearing is 6211.

3. The durable refiner according to claim 1, characterized in that: The tapered roller bearing is a crossed tapered roller bearing.

4. The durable refiner according to claim 3, characterized in that: The model of the cross tapered roller bearing is 32011.

5. The durable refiner according to claim 1, characterized in that: A skeleton oil seal (6) is provided below the tapered roller bearing.

6. The durable refiner according to claim 5, characterized in that: The skeleton oil seals (6) are provided with two.

7. The durable refiner according to claim 1, characterized in that: A water retaining ring (5) is arranged above the deep groove ball rolling bearing.

8. The durable refiner according to claim 7, characterized in that: The transmission shaft (21) is sleeved with a shaft sleeve, and the water retaining ring (5) is fixedly connected to the shaft sleeve.

9. The durable refiner according to claim 7, characterized in that: The water retaining ring (5) is made of a nylon plate, a plastic plate, a polyurethane plate or a rubber plate.

10. The durable refiner according to claim 7, characterized in that: The bearing seat (4) is provided with a drainage flow hole, the drainage flow hole is inclined downward, the upper end of the drainage flow hole is connected to the upper gap of the water retaining ring (5), and a drainage pipe (43) is provided in the drainage flow hole.

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