Oil injection structure for stirring shaft

Abstract

The utility model relates to an oil injection structure for a stirring shaft, which comprises an oil injection mechanism used for injecting oil to the end part of the stirring shaft; the oil storage mechanism is fixed to the bottom of the bearing unit and used for collecting oil dripping from the bearing unit. According to the oil injection structure for the stirring shaft, oil is injected into the two ends of the stirring shaft from the interior of the stirring shaft through the oil injection mechanism, and the oil storage mechanism is used for collecting oil dripping from the bearing unit, so that the oil is prevented from permeating and falling into a stirring tank to pollute raw materials in the stirring tank, and battery slurry is prevented from being influenced by oil stains to cause loss.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery processing technical field, concretely relates to a kind of oil injection structure for stirring shaft. BACKGROUND

[0002] In the electrode manufacturing process of power battery, positive paste is composed of binder, conductive agent, positive material and the like; negative paste is composed of binder, graphite carbon powder and the like. The preparation of positive and negative paste includes a series of processes such as mutual mixing, dissolution and dispersion between liquid and liquid, liquid and solid material. In positive and negative paste, the dispersibility and uniformity of granular active material directly respond to the movement of ions between the two poles of power battery, so the mixing and dispersion of paste of each pole piece material are crucial in power battery production.

[0003] To fully mix battery paste, stirring tank is usually used, that is, various raw materials to be mixed are put into stirring tank, and battery paste in stirring tank is stirred by rotating stirring shaft driven by motor. Bearing seat structure is inevitably used between stirring shaft and stirring tank to support stirring shaft and improve the stability of rotation of stirring shaft.

[0004] In order to reduce the friction between stirring shaft and bearing and reduce wear, butter is applied to bearing part during stirring. The surface temperature of bearing rotating at high speed during stirring increases, and butter is liquefied and easily penetrates and flows into stirring tank, thereby polluting battery paste in stirring tank. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of oil injection structure for stirring shaft, solve the defect that oil liquid is easy to penetrate and flow into stirring tank and pollute battery paste in stirring tank.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows: an oil injection structure for stirring shaft, the stirring shaft is rotatably installed between bearing units, which comprises:

[0007] An oil injection mechanism is used to inject oil into the end of the stirring shaft.

[0008] An oil storage mechanism is fixed to the bottom of the bearing unit and is used to collect oil droplets from the bearing unit.

[0009] Optimally, the oil injection mechanism comprises upper and lower oil injection components opened in the stirring shaft, the upper oil injection component is used to inject oil into one end of the stirring shaft, and the lower oil injection component is used to inject oil into the other end of the stirring shaft.

[0010] Optimally, the oil storage mechanism comprises an oil storage disc, an oil storage cavity opened in the top of the oil storage disc and an oil storage groove annularly arranged in the oil storage disc and connected with the oil storage cavity.

[0011] Optimally, the upper oil injection assembly comprises an upper oil injection groove opened at the top of the stirring shaft and an upper oil injection channel opened at one side of the stirring shaft and communicated with the upper oil injection groove.

[0012] Optimally, the lower oil injection assembly comprises a lower oil injection groove opened at the bottom of the stirring shaft and a lower oil injection channel opened at one side of the stirring shaft and communicated with the lower oil injection groove.

[0013] Optimally, the upper oil injection groove is coaxially arranged with the lower oil injection groove.

[0014] Optimally, the oil injection mechanism further comprises a partition assembly for partitioning the upper oil injection groove and the lower oil injection groove.

[0015] Optimally, the partition assembly comprises a partition groove opened at one side of the stirring shaft and communicated with the upper oil injection groove and the lower oil injection groove and a plug installed in the partition groove for partitioning the upper oil injection groove and the lower oil injection groove.

[0016] Optimally, the oil storage groove is arranged obliquely, and the side of the oil storage groove close to the stirring shaft is higher than the side of the oil storage groove away from the stirring shaft.

[0017] Thanks to the above technical scheme, the present application has the following advantages over the prior art:

[0018] The oil injection structure for stirring shaft of the present application injects oil into both ends of the stirring shaft from the inside of the stirring shaft through the oil injection mechanism and stores the oil dripped from the bearing unit through the oil storage mechanism, thereby avoiding the oil from penetrating into the stirring tank and polluting the raw materials in the stirring tank and preventing the battery slurry from being affected by the oil pollution and causing loss. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view of the present application;

[0020] Figure 2 is a front view of the present application Figure 1 is an enlarged view of A in the present application;

[0021] Figure 3 is a top view of the oil storage mechanism of the present application;

[0022] Figure 4 is a front view of the present application Figure 3 is a sectional view of A-A in the present application;

[0023] EXPLANATION OF REFERENCE NUMBERS:

[0024] 1, upper oil tank; 2, lower oil tank; 3, partition groove; 4, upper oil tank; 5, lower oil tank; 6, plug; 7, auxiliary oil tank; 8, oil storage tray; 9, through groove; 10, baffle; 11, oil storage cavity; 12, oil storage tank; 13, oil blocking piece; 14, upper bearing seat; 15, upper bearing; 16, lower bearing seat; 17, lower bearing. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the embodiments shown in the drawings.

[0026] As Figure 1 shown, it is the structure diagram of the utility model stirring shaft oil injection structure, and the oil injection system includes bearing unit, stirring shaft, oil injection mechanism and oil storage mechanism. The inside of stirring tank is hollow structure, is used for placing the battery slurry to be stirred and so on, and the bottom of stirring tank is fixed on the workshop ground through support frame (specifically, the support frame is fixed on the workshop ground through bolt fastening, and the bottom of stirring tank is fixed together with support frame through welding, and the stirring tank is supported away from the ground through support frame, which can improve the stability of the overall structure, and also can avoid rusting of the stirring tank in long-term contact with the ground).

[0027] The drive box is a box structure, which is fixed on the top of the stirring tank by screw fastening or welding. The drive box is made of plate welding, and its inside is a hollow structure for installing the driving mechanism to drive the stirring shaft to rotate, thereby stirring the battery slurry in the stirring tank by the stirring shaft.

[0028] The bearing unit has a group (i.e. two), each bearing unit is composed of a bearing seat and a bearing installed in the bearing seat. One of the bearing units is installed on the top of the drive box (i.e. the side of the drive box away from the stirring tank); the other bearing unit is installed on the bottom of the drive box (i.e. the side of the drive box close to the stirring tank).

[0029] The stirring shaft is installed between the two bearing units and extends into the stirring tank for stirring the battery slurry in the stirring tank (as Figure 1 shown, only the structure of the stirring shaft between the two bearing units is shown, and the stirring shaft extending into the stirring tank is not shown in the figure).

[0030] The bearing unit has a group (i.e. two), one of the bearing units is installed on the top of the drive box, and the other bearing unit is installed on the bottom of the drive box (the bearing unit installed on the top of the drive box is the upper bearing unit, which includes the upper bearing seat 14 and the upper bearing 15; the bearing unit installed on the bottom of the drive box is the lower bearing unit, which includes the lower bearing seat 16 and the lower bearing 17; the stirring shaft extends into the stirring tank below through the upper bearing 15 and the lower bearing 17).

[0031] The upper bearing seat 14 is fixed on the top of the drive box by screw fastening, and one end of the stirring shaft is installed in the upper bearing 15 of the upper bearing seat 14 by interference fit (as shown in Figure 1 Since the stirring shaft is vertically arranged, the top of the stirring shaft is installed in the upper bearing 15 of the upper bearing seat 14.

[0032] The lower bearing seat 16 is fixed on the bottom of the drive box by screw fastening, and the other end of the stirring shaft is installed in the lower bearing 17 of the lower bearing seat 16 by interference fit, and the stirring shaft extends downward into the lower stirring tank (as shown in Figure 1 Since the stirring shaft is vertically arranged, the bottom of the stirring shaft is installed in the lower bearing 17 of the lower bearing seat 16.

[0033] As shown in Figure 1 The structure between the upper bearing 15 and the lower bearing 17 is located in the drive box (the drive box is a hollow box structure), and a driving mechanism is installed in the drive box to drive the stirring shaft to rotate, thereby stirring the battery slurry in the stirring tank by the stirring shaft. The driving mode can be gear transmission or synchronous belt transmission.

[0034] When the gear transmission mode is selected, the driving mechanism at this time includes a driving motor, a driving gear and a driven gear. The motor housing of the driving motor is fixed on the inside bottom of the drive box by screw fastening, and the motor shaft of the driving motor faces upward. The driving gear is installed on the motor shaft of the driving motor by key connection, and the driven gear is installed on the stirring shaft by key connection and meshes with the driving gear. When the driving motor drives the driving gear to rotate, it will drive the driven gear to rotate synchronously, and then drive the stirring shaft to rotate to stir the battery slurry in the stirring tank.

[0035] When the synchronous belt transmission mode is selected, that is, the driving mechanism at this time includes a driving motor, a main synchronous pulley, a secondary synchronous pulley and a toothed belt. The motor housing of the driving motor is fixed on the inside bottom of the drive box by screw fastening, and the motor shaft of the driving motor faces upward. The main synchronous pulley is installed on the motor shaft of the driving motor by key connection, and the secondary synchronous pulley is installed on the stirring shaft by key connection. The toothed belt is wound around the main synchronous pulley and the secondary synchronous pulley.

[0036] When the driving motor drives the main synchronous pulley to rotate, the secondary synchronous pulley is driven to rotate synchronously by the toothed belt, and then the stirring shaft is driven to rotate to stir the battery slurry in the stirring tank (the synchronous pulley is a part with equal-interval sawtooth gears on the outer peripheral surface, which can mesh with the toothed groove of the toothed belt to transmit motion and power, avoiding slipping).

[0037] The oil injection mechanism is used to inject oil to the end of the stirring shaft to reduce the friction of the bearing, reduce the temperature of the bearing when rotating at high speed, and improve the service life. As shown in Figure 1As shown, the oil injection mechanism includes an upper oil injection assembly and a lower oil injection assembly. The upper oil injection assembly is used to inject oil into the upper bearing 15 in the upper bearing seat 14, and the lower oil injection assembly is used to inject oil into the lower bearing 17 in the lower bearing seat 16.

[0038] As shown in Figure 2 The upper oil injection assembly includes an upper oil injection groove 1 and an upper oil injection groove 4. The upper oil injection groove 1 is opened at the top of the stirring shaft, and the upper oil injection groove 1 is coaxially arranged with the stirring shaft to ensure uniform distribution of lubricating oil and reduce friction loss. When the upper oil injection groove 1 is coaxially arranged with the stirring shaft, the lubricating oil can flow more smoothly into the bearing and other parts that need to be lubricated, ensuring that each part can be fully lubricated. This design can reduce the leakage of lubricating oil and improve the lubrication effect, thereby prolonging the service life of the equipment.

[0039] The upper oil injection groove 4 is radially opened on one side of the stirring shaft and is in communication with the upper oil injection groove 1. In actual oil injection, the grease gun is pressed against the outside of the upper oil injection groove 4, and the grease flows into the upper oil injection groove 1 along the upper oil injection groove 4, and then flows from the bottom to the top of the stirring shaft from the upper end of the stirring shaft. Finally, it flows into the upper bearing 15 at the upper end of the stirring shaft (when injecting oil, an oil port needs to be installed on the outside of the upper oil injection groove 4 through interference fit to adapt to the nozzle structure of the grease gun, to ensure that the grease flows more smoothly into the upper oil injection groove 4, and to avoid grease leakage).

[0040] As shown in Figure 2 The lower oil injection assembly includes a lower oil injection groove 2 and a lower oil injection groove 5. The lower oil injection groove 2 is opened in the stirring shaft and is coaxially arranged with the stirring shaft to ensure uniform distribution of lubricating oil and reduce friction loss. When the lower oil injection groove 2 is coaxially arranged with the stirring shaft, the lubricating oil can flow more smoothly into the bearing and other parts that need to be lubricated, ensuring that each part can be fully lubricated. This design can reduce the leakage of lubricating oil and improve the lubrication effect, thereby prolonging the service life of the equipment.

[0041] As shown in Figure 2 The lower oil injection groove 2 is in communication with the upper oil injection groove 1 and is coaxially arranged. When drilling the hole, the upper oil injection groove 1 and the lower oil injection groove 2 can be drilled together, improving the efficiency of the machining and reducing the difficulty of the machining.

[0042] The lower oil injection groove 5 is radially opened on one side of the stirring shaft and is in communication with the lower oil injection groove 2. In actual oil injection, the grease gun is pressed against the outside of the lower oil injection groove 2, and the grease flows into the lower oil injection groove 2 along the lower oil injection groove 5, and then flows from the top to the bottom of the lower oil injection groove 2 into the auxiliary oil groove 7 at the bottom of the lower oil injection groove 2. Finally, it flows from the auxiliary oil groove 7 into the lower bearing 17 at the bottom of the stirring shaft (when injecting oil, an oil port needs to be installed on the outside of the lower oil injection groove 5 through interference fit to adapt to the nozzle structure of the grease gun, to ensure that the grease flows more smoothly into the lower oil injection groove 5, and to avoid grease leakage).

[0043] Since the lower oil injection groove 2 is communicated with the upper oil injection groove 1, a partition assembly is needed to separate the lower oil injection groove 2 from the upper oil injection groove 1 to avoid affecting the oil injection of the upper bearing 15 (since the upper oil injection groove 1 and the lower oil injection groove 2 are communicated, when oil is directly injected into the upper oil injection groove 4, the oil flows downward under the action of gravity and cannot be injected into the upper bearing 15, so the partition assembly is needed to separate the lower oil injection groove 2 from the upper oil injection groove 1).

[0044] The partition assembly includes a partition groove 3 and a plug 6, the partition groove 3 is radially arranged on one side of the stirring shaft and communicated with the upper oil injection groove 1 and the lower oil injection groove 2. The plug 6 is inserted into the partition groove 3 in an interference fit to separate the upper oil injection groove 1 and the lower oil injection groove 2.

[0045] The oil storage mechanism is fixed on the bottom of the lower bearing seat 16 and is used to store the oil dripped from the lower bearing 17 to avoid the oil falling into the stirring tank and polluting the internal battery slurry. As shown in Figure 3 、 4 , the oil storage mechanism includes an oil storage disc 8, a through groove 9, a baffle 10, an oil storage cavity 11, an oil storage groove 12 and an oil blocking piece 13. The oil storage disc 8 is fixed on the bottom of the lower bearing seat 16 by screw fastening (specifically, a countersunk hole penetrates the oil storage disc 8 in the vertical direction, the bottom of the lower bearing seat 16 is provided with a threaded hole, and a fastening bolt is fixed in the threaded hole from bottom to top to complete the installation of the oil storage disc 8 and the lower bearing seat 16).

[0046] The through groove 9 penetrates the oil storage disc 8 in the axial direction and is coaxially arranged with the oil storage disc 8. In actual installation, the stirring shaft extends into the stirring tank through the through groove 9 of the oil storage disc 8, and when the driving mechanism drives the stirring shaft to rotate, the battery slurry in the stirring tank is agitated by the stirring shaft.

[0047] As shown in Figure 4 , the transition groove is arranged on the top of the oil storage disc 8 and is stepped and tapered from top to bottom. The baffle 10 is integrally connected to the bottom of the transition groove and close to the through groove 9, so that the oil storage cavity 11 is formed between the side of the baffle 10 away from the through groove 9 and the transition groove. The oil dripped from the lower bearing 17 falls into the stepped transition groove and is then stored in the oil storage cavity 11 to avoid the oil falling downward into the stirring tank and polluting the internal battery slurry.

[0048] By arranging the stepped transition groove, the oil droplets are buffered, which facilitates the oil storage cavity 11 to collect the oil and avoids the oil splashing directly into the oil storage cavity 11.

[0049] The oil storage groove 12 is annularly arranged on the circumferential surface of the oil storage disc 8 and communicated with the oil storage cavity 11, and is used to store the excess oil in the oil storage cavity 11 to avoid the oil overflowing from the oil storage cavity 11. As shown in Figure 4As shown, the oil storage groove 12 is arranged through the oil storage disc 8 and is inclined, and the side of the oil storage groove 12 close to the oil storage cavity 11 is higher than the side of the oil storage groove 12 away from the oil storage cavity 11, so that the oil in the oil storage cavity 11 flows into the oil storage groove 12 under the action of gravity.

[0050] In order to avoid the oil from flowing out from the side of the oil storage groove 12 away from the oil storage cavity 11, a plugging member 13 is arranged on the other side of the oil storage groove 12 to plug the oil in the oil storage groove 12. The plugging member 13 can be selected from a bolt or a rubber plug (when the oil storage member is selected from a bolt, the inner periphery of the side of the oil storage groove 12 away from the oil storage cavity 11 is machined with internal threads matched with the bolt, the bolt is screwed on the side of the oil storage groove 12 by screwing to plug the oil storage groove 12 and avoid the internal oil from flowing out; when the oil storage member is selected from a rubber plug, the side of the oil storage groove 12 away from the oil storage cavity 11 does not need to be machined with internal threads, and the rubber plug is inserted into the side of the oil storage groove 12 by interference fit, Figure 4 only a schematic view when the oil storage member is a bolt is shown).

[0051] By arranging the detachable plugging member 13 (when the plugging member 13 is selected from a bolt or a rubber plug, both can be detached, when the plugging member 13 is selected from a bolt, the bolt can be detached by reverse rotation; when the plugging member 13 is selected from a rubber plug, the rubber plug can be pulled out by applying external force outward) on the side of the oil storage groove 12, the plugging member 13 can be detached after stirring for a period of time, so that the oil stored in the oil storage groove 12 is discharged regularly and recycled for cost saving.

[0052] The oil injection structure for the stirring shaft of the utility model injects oil from the inside of the stirring shaft to the two ends of the stirring shaft through the oil injection mechanism, stores the oil dripped from the bearing unit through the oil storage mechanism, avoids the oil from penetrating into the stirring tank and polluting the raw materials in the stirring tank, and prevents the battery paste from being affected by the oil pollution and causing loss.

[0053] The above embodiments are only for describing the technical concept and characteristics of the utility model, the purpose is to enable people skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. An oil injection structure for a stirring shaft, the stirring shaft being rotatably installed between bearing units, characterized by, It comprises: an oil injection mechanism for injecting oil into the end of the stirring shaft; an oil storage mechanism fixed at the bottom of the bearing unit for collecting the oil dripped from the bearing unit; the oil injection mechanism comprises an upper oil injection assembly and a lower oil injection assembly opened in the stirring shaft, the upper oil injection assembly is used for injecting oil into one end of the stirring shaft, and the lower oil injection assembly is used for injecting oil into the other end of the stirring shaft; the upper oil injection assembly comprises an upper oil injection groove (1) opened at the top of the stirring shaft and an upper oil injection groove (4) opened at one side of the stirring shaft and communicated with the upper oil injection groove (1); the lower oil injection assembly comprises a lower oil injection groove (2) opened at the bottom of the stirring shaft and a lower oil injection groove (5) opened at one side of the stirring shaft and communicated with the lower oil injection groove (2).

2. The oil injection structure for a stirring shaft according to claim 1, characterized by: The oil storage mechanism comprises an oil storage disc (8) fixed at the bottom of the bearing unit, an oil storage cavity (11) opened at the top of the oil storage disc (8), and an oil storage groove (12) annularly arranged in the oil storage disc (8) and communicated with the oil storage cavity (11).

3. The oil injection structure for a stirring shaft according to claim 2, characterized by: The upper oil injection groove (1) is coaxially arranged with the lower oil injection groove (2) and communicated with the lower oil injection groove (2).

4. The lubricating structure for a stirring shaft according to claim 1, characterized by: The oil injection mechanism further comprises a partition assembly for partitioning the upper oil injection groove (1) and the lower oil injection groove (2).

5. The lubricating structure for a stirring shaft according to claim 4, characterized in that: The partition assembly comprises a partition groove (3) opened at one side of the stirring shaft and communicated with the upper oil injection groove (1) and the lower oil injection groove (2), and a plug (6) installed in the partition groove (3), the plug (6) is used for partitioning the upper oil injection groove (1) and the lower oil injection groove (2).

6. The oil injection structure for a stirring shaft according to claim 2, characterized by: The oil storage groove (12) is arranged obliquely, and the side of the oil storage groove (12) close to the stirring shaft is higher than the side of the oil storage groove (12) away from the stirring shaft.

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