Lithium battery material powder delivery pump

Abstract

The present invention relates to the field of lithium battery processing equipment, in particular to a lithium battery material powder conveying pump; the pump comprises a power mechanism, a transmission mechanism and a pump body; the power mechanism comprises a motor and a base, the transmission mechanism comprises a bearing seat, a coupling, a main shaft and two sets of deep groove ball bearings, the pump body comprises an outer cylinder, a machine seal, an impeller and a cylinder rear cover, and an overall structure in the form of a grinder is used in conjunction with a feeding impeller, so that liquefied powder can be conveyed more continuously, and during the conveying process, the impeller is used to stir and shear the material to make it more delicate and uniform, and the durability of the entire structure is ensured.

Description

Technical Field

[0001] The invention relates to the field of lithium battery processing equipment, in particular to a lithium battery material powder delivery pump. Background Art

[0002] During the processing of lithium batteries, peristaltic pumps and other equipment are needed to transport powder materials. For example, a Chinese patent on a method for recovering nano-iron phosphate from lithium iron phosphate batteries, patent number 201710567598.6 states: lithium iron phosphate powder is added to a dilute hydrochloric acid solution while stirring, and hydrogen peroxide and suspension are simultaneously added dropwise to a three-necked flask reactor through a peristaltic pump.

[0003] As is known, the working principle of a peristaltic pump is to pump fluid by alternately squeezing and releasing the pump's elastic delivery hose. However, lithium battery raw material powder contains a large amount of granular material with relatively high hardness, and the peristaltic pump is easily worn. In addition, during the squeezing process of the suspension (liquidized powder), solid particles are easily accumulated in the narrow part of the elastic delivery hose. After the elastic delivery hose is released, it is easy to form a periodic sudden change in the material concentration in the local range, which is not conducive to assembly line production operations. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a special powder delivery pump which has a long service life and is convenient for assembly line production.

[0005] The technical solution of the present invention is:

[0006] A lithium battery material powder delivery pump, which includes a power mechanism, a transmission mechanism and a pump body;

[0007] The power mechanism comprises a motor and a base, the base is fixed with the motor by bolts, the motor's rotating shaft is arranged to the right and a trumpet-shaped mounting seat is arranged around the rotating shaft on the motor housing;

[0008] The transmission mechanism includes a bearing seat, a coupling, a main shaft and two sets of deep groove ball bearings. The left end face of the bearing seat is fixed to the trumpet-shaped mounting seat of the motor housing by bolts. The main shaft is installed in the bearing seat through two sets of deep groove ball bearings. The inner wall of the bearing seat is provided with a bearing gland and a skeleton oil seal corresponding to the deep groove ball bearings. The rotating shaft of the motor is connected to the left end of the coupling and the right end of the coupling is connected to the main shaft.

[0009] The pump body includes an outer cylinder, a mechanical seal, an impeller and a cylinder rear cover. The left end of the outer cylinder is equipped with a mechanical seal, the right section of the main shaft extends into the outer cylinder along the mechanical seal through hole, the right end of the main shaft is equipped with an impeller, a feed pipe is vertically arranged at the upper end of the outer cylinder, one side of the feed pipe is also connected to a liquid inlet pipe, the right end of the outer cylinder is fixed with a cylinder rear cover, a discharge pipe is formed laterally on the cylinder rear cover, the left section of the discharge pipe extends into the outer cylinder, and the right section of the impeller is sleeved on the outer periphery of the left end of the discharge pipe, so that the material must enter the impeller before it can be sent into the discharge pipe.

[0010] Specifically, a shaft sleeve is sleeved on the outer circumference of the rotating shaft of the motor.

[0011] Specifically, the bearing gland is provided with a plurality of grease nipples for applying lubricating grease.

[0012] Specifically, the impeller is fixed on the main shaft through a shaft end gland and screws to prevent the impeller from falling off during high-speed rotation.

[0013] Specifically, a sealing ring is provided between the outer cylinder and the cylinder rear cover to further reduce liquid leakage.

[0014] Specifically, the bottom surface of the bearing seat is provided with a support member protruding vertically downward, the support member is made of cast iron, and the bottom surface thereof is a blunt surface or a flat surface. Powder delivery pumps are generally non-standard products. Battery manufacturers hope that one device can be used for powder delivery of various types. Therefore, replacing suitable impellers or main shafts and other structures is a routine process in the production process. Therefore, the bearing seat, outer cylinder, etc. of this equipment cannot be fixedly connected between the bottom of the cylinder and the base like ordinary horizontal rotating equipment. In addition, in order to facilitate observation of whether the bearing seat and the outer cylinder are leaking, the bottom and the base are usually not fixedly connected. The advantage of this structure is that when the outer cylinder needs to be replaced and it is necessary, tools (such as a movable jack) can be used to support the support member, and then the bearing seat can be supported by hand for shelling (this is easier and faster than using a forklift, crane, etc., and it is much more labor-saving than simply carrying it by hand).

[0015] The beneficial effects of the present invention are as follows: the whole structure of the grinder is used in combination with the impeller for feeding, so that the liquefied powder (suspension material) can be transported more continuously, and the stirring and shearing of the impeller during the transportation process makes the material more delicate and uniform, and the durability of the entire structure is ensured. Since there is no structure such as an elastic conveying hose or a diaphragm, the service life is long and the discharge is stable and uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 for Figure 1Enlarged view of point A in the middle.

[0018] In the figure, 1. motor; 2. base; 3. bearing seat; 4. bushing; 5. coupling; 6. main shaft; 7. bearing cover; 8. skeleton oil seal; 9. deep groove ball bearing; 10. grease nipple; 11. machine seal; 12. outer cylinder; 13. impeller; 14. shaft end cover; 15. screw; 16. sealing ring; 17. cylinder rear cover; 18. support. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0020] like Figure 1 and 2 As shown, a lithium battery material powder delivery pump comprises a power mechanism, a transmission mechanism and a pump body;

[0021] The power mechanism comprises a motor 1 and a base 2, the base 2 is fixed to the motor 1 by bolts, the rotating shaft of the motor 1 is arranged to face right and a trumpet-shaped mounting seat is arranged around the rotating shaft on the housing of the motor 1;

[0022] The transmission mechanism includes a bearing seat 3, a coupling 5, a main shaft 6 and two sets of deep groove ball bearings 9. The left end face of the bearing seat 3 is fixed to the trumpet-shaped mounting seat of the motor 1 housing by bolts. The main shaft 6 is installed in the bearing seat 3 through two sets of deep groove ball bearings 9. The inner wall of the bearing seat 3 is provided with a bearing gland 7 and a skeleton oil seal 8 corresponding to the deep groove ball bearings 9. The rotating shaft of the motor 1 is connected to the left end of the coupling 5 and the right end of the coupling 5 is connected to the main shaft 6.

[0023] The pump body includes an outer cylinder 12, a mechanical seal 11, an impeller 13 and a cylinder back cover 17. The left end of the outer cylinder 12 is equipped with the mechanical seal 11, and the right section of the main shaft 6 extends into the outer cylinder 12 along the through hole of the mechanical seal 11. The right end of the main shaft 6 is equipped with an impeller 13. A feed pipe is vertically arranged on the upper end of the outer cylinder 12, and a liquid inlet pipe is also connected to one side of the feed pipe. The right end of the outer cylinder 12 is fixed with a cylinder back cover 17, and a discharge pipe is formed laterally on the cylinder back cover 17. The left section of the discharge pipe extends into the outer cylinder 12, and the right section of the impeller 13 is sleeved on the outer periphery of the left end of the discharge pipe, so that the material must enter the impeller 13 to be sent into the discharge pipe.

[0024] Specifically, a shaft sleeve 4 is sleeved on the outer circumference of the rotating shaft of the motor 1 .

[0025] Specifically, the bearing gland 7 is provided with a plurality of grease nipples 10 for applying lubricating grease.

[0026] Specifically, the impeller 13 is fixed to the main shaft 6 by means of a shaft end gland 14 and screws 15 to prevent the impeller 13 from falling off during high-speed rotation.

[0027] Specifically, a sealing ring 16 is provided between the outer cylinder 12 and the cylinder rear cover 17 to further reduce liquid leakage.

[0028] Specifically, a support member 18 protruding vertically downward is disposed on the bottom surface of the bearing seat 3. The support member 18 is made of cast iron, and its bottom surface is a blunt surface or a flat surface.

[0029] Recommended models / specifications of each component:

[0030] Motor-IM / B35 / 7.5KW2-level

[0031] Coupling-Elastic Pin Type

[0032] Deep groove ball bearing-NSK6309Z type

[0033] Screws-Hexagon socket screws

[0034] Sealing ring - O-ring.

[0035] The method of using this embodiment is as follows:

[0036] Step 1: Introduce liquid (which can be clean water, tap water, deionized water, etc., depending on production needs) through the liquid inlet pipe, and the liquid infiltrates the internal components of the pump body. This process is maintained for 20-50 seconds; this process can prevent the impeller from running dry when starting;

[0037] Step 2: Turn on the motor, the liquid is discharged from the discharge pipe, and the discharge section is removed;

[0038] Step 3: Introduce lithium battery material powder through the feed pipe, and introduce liquid through the liquid inlet pipe according to the water ratio required by production;

[0039] Step 4: When the moisture ratio in the discharge material is relatively stable, stop removing the discharge material and switch to normal material collection.

[0040] The above embodiments and descriptions are only for illustrating the principles and best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, all of which fall within the scope of the present invention to be protected.

Claims

1. The method for using the lithium battery material powder delivery pump is characterized in that: Step 1: Introduce liquid through the liquid inlet pipe. The liquid is one of clean water, tap water, and deionized water. The liquid infiltrates the internal components of the pump body. This process is maintained for 20-50 seconds. Step 2: Turn on the motor, the liquid is discharged from the discharge pipe, and the discharge section is removed; Step 3: Introduce lithium battery material powder through the feed pipe, and introduce liquid through the liquid inlet pipe according to the water ratio required by production; Step 4: When the water content in the discharge material is stable, stop removing the discharge material and switch to normal material collection; The lithium battery material powder conveying pump includes a power mechanism, a transmission mechanism and a pump body; the power mechanism includes a motor and a base, the base fixes the motor by bolts, the motor shaft is set to the right and the motor housing is provided with a trumpet-shaped mounting seat around the shaft; the transmission mechanism includes a bearing seat, a coupling, a main shaft and two sets of deep groove ball bearings, the left end face of the bearing seat is fixed to the trumpet-shaped mounting seat of the motor housing by bolts, the main shaft is installed in the bearing seat through two sets of deep groove ball bearings, and the inner wall of the bearing seat is provided with a bearing cover and a skeleton oil corresponding to the deep groove ball bearings The pump body comprises an outer cylinder, a mechanical seal, an impeller and a cylinder back cover, the left end of the outer cylinder is provided with a mechanical seal, the right section of the main shaft extends into the outer cylinder along the mechanical seal through hole, the right end of the main shaft is provided with an impeller, a feed pipe is vertically arranged at the upper end of the outer cylinder, one side of the feed pipe is also connected with a liquid inlet pipe, a cylinder back cover is fixed to the right end of the outer cylinder, a discharge pipe is formed laterally on the cylinder back cover, the left section of the discharge pipe extends into the outer cylinder, and the right section of the impeller is sleeved on the outer periphery of the left end of the discharge pipe.

2. The method for using the lithium battery material powder delivery pump according to claim 1, characterized in that: A shaft sleeve is sleeved on the outer periphery of the rotating shaft of the motor.

3. The method for using the lithium battery material powder delivery pump according to claim 2, characterized in that: The bearing gland is provided with a plurality of grease nipples.

4. The method for using the lithium battery material powder delivery pump according to claim 3, characterized in that: The impeller is fixed on the main shaft through a shaft end gland and screws.

5. The method for using the lithium battery material powder delivery pump according to claim 4, characterized in that: A sealing ring is arranged between the outer cylinder and the cylinder rear cover.

6. The method for using the lithium battery material powder delivery pump according to claim 5, characterized in that: The bottom surface of the bearing seat is provided with a support member protruding vertically downward. The support member is made of cast iron, and its bottom surface is a blunt surface or a flat surface.

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