Shaft transmission device

Abstract

The utility model relates to the technical field of shaft connectors, in particular to a shaft transmission device. Comprising a shell and a connecting shaft, multiple layers of oil cavities, mechanical oil seals and framework oil seals are arranged in the shell, the multiple layers of oil cavities, the mechanical oil seals and the framework oil seals are arranged in a staggered mode or in sequence, the connecting shaft is communicated with the multiple layers of oil cavities, the mechanical oil seals and the framework oil seals, and an alloy sleeve is installed on the outer side of one end of the connecting shaft. The outer side of the other end of the connecting shaft is provided with the bearing, the multiple layers of oil cavities, the mechanical oil seal and the framework oil seal can achieve multi-point supporting of the connecting shaft, so that the connecting shaft cannot move and is more stable during working, the multiple layers of oil cavities, the mechanical oil seal, the framework oil seal and the alloy sleeve achieve the multi-point sealing function, the sealing effect is excellent, and the service life of the connecting shaft is prolonged. And the situation that liquid flows into a driving device of using equipment through the connecting shaft or flows out of the connecting shaft to be splashed can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft connectors, in particular to a shaft transmission device. Background Art

[0002] A shaft transmission device is a transmission mechanism that can connect an output shaft and a moving workpiece, and can be used in various scenarios such as pumps, mixing equipment, and vehicles. The main disadvantage of existing shaft transmission devices is that the sealing performance is poor. If the usage scenario is in a liquid environment, the liquid can easily flow through the connecting shaft inside the shaft transmission device to the other end and leak and splash (or continue to flow along the connecting shaft to the drive device of the device), which will cause water overflow or malfunction of the equipment. Based on this, we propose a new shaft transmission device. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a shaft transmission device, which, after being improved, can effectively solve the problems raised in the above-mentioned background technology.

[0004] The technical solution of the utility model is:

[0005] A shaft transmission device includes a shell and a connecting shaft, wherein the interior of the shell is provided with a plurality of layers of oil chambers, mechanical oil seals and skeleton oil seals, wherein the plurality of layers of oil chambers and the mechanical oil seals and the skeleton oil seals are arranged alternately or sequentially, and the connecting shaft is respectively connected to the plurality of layers of oil chambers, the mechanical oil seals and the skeleton oil seals, an alloy sleeve is installed on the outer side of one end of the connecting shaft, and a bearing is installed on the outer side of the other end of the connecting shaft, and the alloy sleeve and the bearing are both located inside the shell.

[0006] Furthermore, a spare cavity is provided inside the housing, and the spare cavity is provided between the mechanical oil seal and the skeleton oil seal.

[0007] Furthermore, the number of the mechanical oil seals and skeleton oil seals is several.

[0008] Furthermore, the mechanical oil seal, the skeleton oil seal and the plurality of layers of the oil chambers are arranged between the alloy sleeve and the bearing.

[0009] Furthermore, the connecting shaft sequentially connects the alloy sleeve, the oil chamber, the mechanical oil seal, the spare chamber, the skeleton oil seal, the oil chamber and the bearing.

[0010] Furthermore, the mechanical oil seal is fixedly connected to the connecting shaft, and the skeleton oil seal, the alloy sleeve and the bearing are respectively transmission-connected to the connecting shaft.

[0011] Furthermore, the shaft transmission device also includes an outer cylinder, and the outer shell is fixedly installed inside the outer cylinder.

[0012] The beneficial effects of the utility model are:

[0013] Compared with the prior art, by arranging several layers of oil chambers, mechanical oil seals, skeleton oil seals, alloy sleeves and bearings inside the outer shell, the several layers of oil chambers, mechanical oil seals and skeleton oil seals can realize multi-point support of the connecting shaft, so that the connecting shaft will not move and is more stable during operation. Moreover, the several layers of oil chambers, mechanical oil seals, skeleton oil seals and alloy sleeves realize the function of multi-point sealing, and the sealing effect is excellent, which can effectively prevent the liquid from flowing through the connecting shaft to the driving device of the equipment or flowing out of the connecting shaft to splash. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram (cross-sectional view) of the utility model;

[0015] Figure 2 This is a structural schematic diagram (cross-sectional view) of the utility model with an outer cylinder installed.

[0016] In the figure, 1. outer shell; 2. connecting shaft; 3. oil chamber; 4. mechanical oil seal; 5. skeleton oil seal; 6. alloy sleeve; 7. bearing; 8. spare chamber; 9. outer cylinder. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0018] like Figure 1-2 As shown,

[0019] A shaft transmission device comprises a shell 1 and a connecting shaft 2, wherein the interior of the shell 1 is provided with several layers of oil chambers 3, mechanical oil seals 4 and skeleton oil seals 5, wherein the several layers of the oil chambers 3 are staggered or arranged in sequence with the mechanical oil seals 4 and the skeleton oil seals 5, and the connecting shaft 2 is respectively connected with the several layers of oil chambers 3, mechanical oil seals 4 and skeleton oil seals 5, an alloy sleeve 6 is installed on the outer side of one end of the connecting shaft 2, and a bearing 7 is installed on the outer side of the other end of the connecting shaft 2, and the alloy sleeve 6 and the bearing 7 are both located inside the shell 1; in this embodiment, the multi-layer sealing structure has an excellent sealing effect, and sealing lubricating oil, preferably butter, can be injected into each oil chamber 3 to form a butter layer inside the oil chamber 3, which can have the effect of oil sealing and further enhance the sealing effect of the device, and can lubricate the mechanical oil seal 4 and the skeleton oil seal 5, so that it can be used in a liquid environment or a non-liquid environment, and has a wide range of uses.

[0020] Specifically, the shell 1 can be an integrally formed structure or the following structure: the shell 1 can be divided into multiple connected shells, and the alloy sleeve 6, oil chamber 3, mechanical oil seal 4, spare chamber 8, skeleton oil seal 5, oil chamber 3 and bearing 7 can be separately provided with connecting shells, and each connecting shell is provided with an adaptive connecting groove and step, so that each layer of the structure can be detachably connected in a stacked manner, thereby making each part of the device detachable, which is more convenient for future maintenance work. At the same time, a sealing ring can be installed at the connection between adjacent connecting shells to enhance the sealing effect.

[0021] As a preferred embodiment; a spare chamber 8 is further provided inside the shell 1, and the spare chamber 8 is provided between the mechanical oil seal 4 and the skeleton oil seal 5, and can also be provided between other two layers of oil seals or mechanical seals. A notch is provided at the shell 1 of the spare chamber 8, and a plug can be installed on the notch to facilitate the replenishment of butter; by providing the spare chamber 8, butter can be injected into the spare chamber 8 to form a butter layer, which can backup the butter in the oil chamber 3 to prevent the butter in other oil chambers 3 from being exhausted and affecting the use of the device.

[0022] As a preferred embodiment, the number of mechanical oil seals 4 and skeleton oil seals 5 is several. It can be understood that the number of mechanical oil seals 4 and skeleton oil seals 5 can be set according to actual conditions, and they can be coordinated with several layers of oil chambers 3, and can be staggered or arranged in sequence, so as to achieve a better sealing effect.

[0023] As a preferred embodiment; the mechanical oil seal 4, the skeleton oil seal 5 and the several layers of the oil chamber 3 are arranged between the alloy sleeve 6 and the bearing 7; it can be understood that the alloy sleeve 6 and the bearing 7 are mainly used to support the connecting shaft 2 so that it is not easy to shake. Secondly, the alloy sleeve 6 is arranged in the front. If used in a liquid environment, the alloy sleeve 6 can first contact with the liquid, and the gap between the alloy sleeve 6 and the connecting shaft 2 and the gap between the bearing 7 and the connecting shaft 2 are very small (within 50 microns), so that the alloy sleeve 6 can block more than 95% of the water and dirt in the dirty water, thereby effectively protecting the mechanical oil seal 4 or the skeleton oil seal 5; moreover, the material of the alloy sleeve 6 is alloy, which can extend its service life.

[0024] As a preferred embodiment; the connecting shaft 2 is connected to the alloy sleeve 6, oil chamber 3, mechanical oil seal 4, spare chamber 8, skeleton oil seal 5, oil chamber 3 and bearing 7 in sequence; the preferred hierarchical structure of the device is alloy sleeve 6, oil chamber 3, mechanical oil seal 4, spare chamber 8, skeleton oil seal 5, oil chamber 3 and bearing 7, the purpose of which is to achieve the best waterproof effect under a limited sealing layer structure while reducing costs.

[0025] As a preferred embodiment, the mechanical oil seal 4 is fixedly connected to the connecting shaft 2, and the skeleton oil seal 5, the alloy sleeve 6 and the bearing 7 are respectively connected to the connecting shaft 2 in a transmission manner.

[0026] As a preferred embodiment, the shaft transmission device also includes an outer cylinder 9, and the outer shell 1 is fixedly installed inside the outer cylinder 9. By providing the outer cylinder 9, it is convenient to install the entire device, and then the outer cylinder 9 is used to connect with the use equipment to achieve better installation and use effects.

[0027] The sealing principle of the utility model is: when working, water will flow along the connecting shaft 2. Since the device is provided with a multi-layer sealing structure, the alloy sleeve 6 structure at the first place can block 95% of the dirty water, and the structure of the multi-layer oil seal and multiple mechanical seals at the back makes it extremely difficult for water to penetrate, thereby effectively protecting the driving device of the equipment and preventing water leakage and splashing.

[0028] The usage process of the utility model is as follows: for example, when used in a water pump, one end of the connecting shaft 2 is connected to the output shaft of the motor through a coupling, and the other end of the connecting shaft 2 is detachably installed with an impeller, that is, under the drive of the motor, the connecting shaft 2 and the impeller can be driven to rotate to realize the operation of the water pump.

[0029] It should be pointed out that the main problem in the prior art is that the existing shaft transmission device has poor sealing performance. If the use scenario is in a liquid environment, the liquid is easy to flow through the connecting shaft inside the shaft transmission device to the other end thereof and leak and splash (or continue to flow along the connecting shaft to the driving device of the device), which will cause overflow or malfunction of the device.

[0030] Therefore, after the improvement of the present application, by arranging several layers of oil chambers 3, mechanical oil seals 4, skeleton oil seals 5, alloy sleeves 6 and bearings 7 inside the outer shell 1, the several layers of oil chambers 3, mechanical oil seals 4 and skeleton oil seals 5 can realize multi-point support of the connecting shaft 2, so that the connecting shaft 2 will not move and is more stable during operation. Moreover, the several layers of oil chambers 3, mechanical oil seals 4, skeleton oil seals 5 and alloy sleeves 6 realize the function of multi-point sealing, and the sealing effect is excellent, which can effectively prevent the liquid from flowing through the connecting shaft 2 to the driving device of the equipment or flowing out of the connecting shaft 2 and splashing.

[0031] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A shaft transmission device, comprising a housing and a connecting shaft, characterized in that: Several layers of oil chambers, mechanical oil seals and skeleton oil seals are arranged inside the shell. Several layers of oil chambers and mechanical oil seals and skeleton oil seals are arranged alternately or sequentially. The connecting shaft is connected to several layers of oil chambers, mechanical oil seals and skeleton oil seals respectively. An alloy sleeve is installed on the outside of one end of the connecting shaft, and a bearing is installed on the outside of the other end of the connecting shaft. The alloy sleeve and the bearing are both located inside the shell.

2. A shaft transmission device according to claim 1, characterized in that: A spare cavity is also arranged inside the shell, and the spare cavity is arranged between the mechanical oil seal and the skeleton oil seal.

3. A shaft transmission device according to claim 2, characterized in that: The number of the mechanical oil seals and skeleton oil seals is several.

4. A shaft transmission device according to claim 3, characterized in that: The mechanical oil seal, the skeleton oil seal and the plurality of layers of the oil chambers are arranged between the alloy sleeve and the bearing.

5. A shaft transmission device according to claim 4, characterized in that: The connecting shaft is sequentially connected to the alloy sleeve, the oil chamber, the mechanical oil seal, the spare chamber, the skeleton oil seal, the oil chamber and the bearing.

6. A shaft transmission device according to claim 5, characterized in that: The mechanical oil seal is fixedly connected to the connecting shaft, and the skeleton oil seal, the alloy sleeve and the bearing are respectively drivingly connected to the connecting shaft.

7. A shaft transmission device according to claim 6, characterized in that: The shaft transmission device also includes an outer cylinder, and the outer shell is fixedly installed inside the outer cylinder.

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