CN209896154U - Air inlet device for extraction inlet in diaphragm production - Google Patents

Abstract

The utility model discloses a diaphragm production extraction entry hot blast blowpipe apparatus belongs to lithium cell diaphragm production facility technical field. The utility model discloses a diaphragm production extraction entry hot blast blowpipe apparatus, including the extraction tank and be located the entry roller of the diaphragm entrance of extraction tank, its characterized in that: still include the air knife, this air knife and entry roller are fixed to be linked to each other and its air outlet towards the diaphragm entry, the top and the gaseous phase recovery pipe of extraction tank link to each other. Adopt the utility model discloses an air inlet device can effectively reduce and avoid the outside harm that causes the human body of volatilizing of extraction tank entrance dichloromethane to reduce the dichloromethane loss.

Description

Air inlet device for extraction inlet in diaphragm production

Technical Field

The utility model belongs to the technical field of lithium cell diaphragm production facility, more specifically say, relate to a diaphragm production extraction entry hot blast blowpipe apparatus.

Background

Because the lithium battery has the advantages of high energy density, long cycle life, small self-discharge rate, no memory effect, environmental protection and the like, and the continuous progress of lithium battery technology, the lithium battery product is widely applied to various industries, such as mobile phones, portable computers, video cameras, toys, electric vehicles and the like. The lithium battery diaphragm is one of four key materials of the lithium battery, is a material for connecting and separating the positive electrode and the negative electrode of the battery, is an electronic insulator, can prevent short circuit, but allows lithium ions to pass through, and can also block current conduction in the battery through a closed hole function when the battery is overheated.

The wet diaphragm has adjustable pores, thinner thickness and more tortuous pore diameter due to the unique production process, and the market share is gradually improved. The quality of the performance of the diaphragm determines the interface structure and the internal resistance of the lithium battery, and further influences the key characteristics of the battery such as capacity, cycle life, charge-discharge current density and the like, so that the improvement of the performance of the diaphragm plays an important role in improving the comprehensive performance of the battery. In the production process of the wet diaphragm, firstly, paraffin oil and PE powder are melted and uniformly mixed in an extruder and then extruded, and a methylene dichloride organic solvent is needed for extracting the paraffin oil in the diaphragm.

In the actual production process, the oil film enters into the extraction tank entrance from behind the oven export, and firstly the temperature of oil film is higher relatively, secondly the speed of producing the line is very fast to cause the extraction liquid to stir badly, the extraction liquid volatilizees more in other places at the extraction tank entrance. However, methylene dichloride is very volatile and has an anesthetic effect, so that central nerves and a respiratory system can be damaged, adverse reactions such as headache, hypodynamia, dizziness, anorexia, slow movement and the like can occur after long-term contact, and the methylene dichloride volatilizes into the air to cause waste of raw materials. Therefore, the method has important significance for effectively reducing and avoiding the volatilization of dichloromethane at the inlet of the extraction tank.

Through retrieval, chinese patent application No. 201820844022.X discloses a lithium battery diaphragm oil system coating extraction liquid removing device, the device includes a set of extraction tank and liquid removing mechanism that set up along the fore-and-aft direction, and the liquid level below in every extraction tank all is provided with down the switching-over roller, is provided with the last switching-over roller that is located the extraction tank top between two adjacent extraction tanks in the front and back, and every department of going up the switching-over roller all is provided with liquid removing mechanism, liquid removing mechanism include hot air supply, with extraction tank fixed connection's support, erect the air knife on the support, support and air knife all are located the switching-over roller the place ahead, the air intake of air knife and the export intercommunication of hot air supply, the air-out direction orientation of air knife is located the coating film on the last switching-over roller of its rear. This application can prevent effectively through the setting of removing liquid mechanism that the extraction liquid on the coating film from being brought into the extraction tank at rear, scrapes the liquid effect better, but it still can't avoid the harm and the wasting of resources that the evaporation of extraction agent exists to personnel's health at the extraction tank entrance.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The utility model aims to overcome and adopt the extraction tank to carry out extraction treatment to the diaphragm among the prior art, extraction tank entrance dichloromethane volatilizees seriously to easily cause harm to the human body, and produce the not enough of wasting of resources, provide a diaphragm production extraction entry hot blast blowpipe apparatus. Adopt the utility model discloses an air inlet device can effectively reduce and avoid the outside harm that causes the human body of volatilizing of extraction tank entrance dichloromethane to reduce the dichloromethane loss.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model discloses a diaphragm production extraction entry hot blast blowpipe apparatus, including the extraction tank and be located the entry roller of the diaphragm entrance of extraction tank, its characterized in that: still include the air knife, this air knife and entry roller are fixed to be linked to each other and its air outlet towards the diaphragm entry, the top and the gaseous phase recovery pipe of extraction tank link to each other.

Furthermore, the air knife is positioned on the upper part of the roller surface of the inlet roller.

Furthermore, the air knives comprise upper air knives and lower air knives which are symmetrically arranged, and the upper air knives and the lower air knives are respectively positioned on the upper portion of the roller surface and the lower portion of the roller surface of the inlet roller.

Furthermore, the two ends of the central shaft of the inlet roller are respectively provided with a fixed rod, the two ends of the air knife are respectively provided with an installation shaft, and the air knife is correspondingly supported and installed on the two fixed rods through the installation shafts at the two ends of the air knife.

Further, the mounting shaft is rotatably coupled relative to the stationary rod.

Furthermore, a cross clamp is arranged on the fixed rod, and the fixed rod and the mounting shaft are respectively clamped and fixed in a first fixed support and a second fixed support of the cross clamp.

Furthermore, a first rotating screw and a second rotating screw are respectively arranged on the first fixing support and the second fixing support.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a diaphragm production extraction entry hot blast blowpipe apparatus through the diaphragm entrance installation air knife at the extraction tank, makes it sweep towards diaphragm entrance to can effectively reduce and avoid the extract in the extraction tank to volatilize to the air by the diaphragm entrance in to outside, and retrieve the gaseous phase on extraction tank upper portion through the gaseous phase recovery tube, therefore can prevent on the one hand that dichloromethane from volatilizing the harm to the human body, on the other hand is favorable to resources are saved, reduces the dichloromethane loss.

(2) The utility model discloses a diaphragm production extraction entry hot blast blowpipe apparatus, the air knife include last air knife and the lower air knife that the longitudinal symmetry set up, and go up air knife and lower air knife and be located the roll surface upper portion and the roll surface lower part of entry roller respectively to not only can reduce the dichloromethane and volatilize to the air, can also guarantee the level and smooth of face simultaneously more effectively, be favorable to reducing the face pincher trees.

(3) The utility model discloses a diaphragm production extraction entry hot blast blowpipe apparatus, the installation axle rotatable the installing at air knife through its both ends is installed on the dead lever at entry roller both ends to can adjust the direction of blowing of air knife as required, be favorable to guaranteeing to sweep the effect.

(4) The utility model discloses a diaphragm production extraction entry hot blast blowpipe apparatus, be equipped with cross clamp on the dead lever, the dead lever is fixed in the first fixed bolster and the second fixed bolster of cross clamp through rotatory screw clamp fastening respectively with the installation axle to can adjust the mounting height of air knife and sweep the direction, and adjust easy and simple to handle.

Drawings

FIG. 1 is a schematic structural view of an air intake device at an extraction inlet in the production of a diaphragm of the present invention;

fig. 2 is a schematic view (one) of the installation structure of the air knife of the present invention;

fig. 3 is a schematic view (ii) of the installation structure of the air knife of the present invention;

fig. 4 is a schematic structural view of the cross clamp of the present invention.

Reference numbers in the drawings illustrate:

1. an extraction tank; 2. a reversing roller; 3. a gas phase recovery pipe; 4. a septum inlet; 501. an air feeding knife; 502. a lower air knife; 6. an inlet roller; 7. a diaphragm; 8. a central shaft; 9. fixing the rod; 10. installing a shaft; 11. an air inlet pipe; 12. a cross clamp; 1201. a first fixed bracket; 1202. a second fixed bracket; 1301. a first rotating screw; 1302. a second rotation screw.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

As shown in fig. 1, the air intake device for the extraction inlet in the membrane production of this embodiment includes an extraction tank 1, an inlet roller 6 located at a membrane inlet 4 of the extraction tank, and an air knife, the air knife is fixedly connected to the inlet roller 6, an air outlet of the air knife faces the membrane inlet 4, and a top of the extraction tank 1 is connected to a gas phase recovery pipe 3. This embodiment is through installing the air knife on the entry roller 6 at the extraction tank, bloies towards diaphragm entry 4 through the air knife to be favorable to reducing and avoiding the extraction liquid of 1 in the extraction tank to volatilize to the workshop by diaphragm entry 4 outward, and blow gas to the inside gaseous phase recovery tube 3 through the extraction tank top of extraction tank and retrieve, therefore can prevent on the one hand that dichloromethane from volatilizing the harm to the human body, on the other hand is favorable to resources are saved, reduces the dichloromethane loss.

Example 2

The structure of the air intake device for the extraction inlet in the diaphragm production of the embodiment is basically the same as that of the embodiment 1, and the difference is mainly that: in this embodiment, one air knife is provided above the roll surface of the inlet roll 6.

Example 3

The structure of the air intake device for the extraction inlet in the diaphragm production of the embodiment is basically the same as that of the embodiment 1, and the difference is mainly that: the air knives of this embodiment include upper air knives 501 and lower air knives 502 which are disposed up and down symmetrically, and the upper air knives 501 and the lower air knives 502 are respectively located on the upper portion and the lower portion of the roll surface of the inlet roll 6. The arrangement of the upper symmetrical air knife and the lower symmetrical air knife can reduce dichloromethane volatilization to the air, and meanwhile, the surface of the diaphragm 7 is blown in the continuous production process, so that the flatness of the diaphragm surface can be effectively guaranteed, the reduction of the wrinkle phenomenon of the diaphragm surface is facilitated, and the yield of the diaphragm is improved.

Example 4

The structure of the air intake device for the extraction inlet in the diaphragm production of the embodiment is basically the same as that of the embodiment 1, and the difference is mainly that: as shown in fig. 2, in the present embodiment, the fixing rods 9 are respectively disposed at two ends of the central shaft 8 of the inlet roller 6, the mounting shafts 10 are respectively disposed at two ends of the air knife, and the air knife is correspondingly supported and mounted on the two fixing rods 9 through the mounting shafts 10 at the two ends.

Example 5

The structure of the air intake device for the extraction inlet in the diaphragm production of the embodiment is basically the same as that of the embodiment 4, and the difference is mainly that: installation axle 10 is rotatable continuous for dead lever 9 in this embodiment to can adjust the direction of blowing of air knife as required, be favorable to guaranteeing to sweep the effect. Specifically, as shown in fig. 3 and 4, a cross clamp 12 is provided on the fixing rod 9 of the present embodiment, and the fixing rod 9 and the mounting shaft 10 are respectively clamped and fixed in the first fixing support 1201 and the second fixing support 1202 of the cross clamp 12 by a first rotating screw 1301 and a second rotating screw 1302, so that the mounting height and the purging direction of the air knife can be respectively adjusted, and the adjustment operation is simple and convenient.

Example 6

The diaphragm production extraction device of this embodiment, including extraction tank 1, extraction tank 1 is inside to be equipped with reverse roll 2, and the lateral wall of extraction tank 1 is equipped with diaphragm entry 4, and diaphragm entry 4 department is equipped with entry roller 6, and installs the extraction entry air inlet unit among the embodiment 5 on the entry roller 6. Air is introduced into the air knife through the air inlet pipe 11, and the air outlet of the air knife blows towards the diaphragm inlet 4, so that dichloromethane volatilization to the air at the diaphragm inlet 4 can be effectively reduced.

Claims (7)

1. The utility model provides a diaphragm production extraction entry hot blast blowpipe apparatus, includes extraction tank (1) and is located entry roller (6) of diaphragm entry (4) department of extraction tank, its characterized in that: still include the air knife, this air knife is fixed continuous with entry roller (6) and its air outlet is towards diaphragm entry (4), the top of extraction tank (1) links to each other with vapor recovery tube (3).

2. The intake device of claim 1, wherein: the air knife is positioned on the upper part of the roller surface of the inlet roller (6).

3. The intake device of claim 1, wherein: the air knives comprise upper air knives (501) and lower air knives (502) which are symmetrically arranged, and the upper air knives (501) and the lower air knives (502) are respectively positioned on the upper portion and the lower portion of the roller surface of the inlet roller (6).

4. A membrane-produced extraction inlet intake assembly as claimed in any one of claims 1 to 3, wherein: the air knife is characterized in that fixing rods (9) are respectively arranged at two ends of a central shaft (8) of the inlet roller (6), mounting shafts (10) are respectively arranged at two ends of the air knife, and the air knife is correspondingly supported and mounted on the two fixing rods (9) through the mounting shafts (10) at the two ends of the air knife.

5. The intake device of claim 4, wherein: the mounting shaft (10) is rotatably connected relative to the fixing rod (9).

6. The intake device of claim 5, wherein: the fixing rod (9) is provided with a cross clamp (12), and the fixing rod (9) and the mounting shaft (10) are respectively clamped and fixed in a first fixing support (1201) and a second fixing support (1202) of the cross clamp (12).

7. The intake device of claim 6, wherein: the first fixing support (1201) and the second fixing support (1202) are respectively provided with a first rotating screw (1301) and a second rotating screw (1302).

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