CN216032647U - Spraying system of impregnator - Google Patents

Abstract

The utility model discloses a spraying system of an impregnator, which comprises an intermediate tank, a DMF tank, a cleaning tank and a correction slurry tank, wherein the DMF tank is connected with a plurality of DMF spray heads through DMF conveying pipes, a slurry pool is connected with the intermediate tank through an overflow pipe, the correction slurry tank is connected with the intermediate tank through a correction slurry pipe, the intermediate tank is connected with a plurality of slurry spray heads through a material return pipe with a lifting pump, the slurry spray heads are positioned in a tank cover, and the intermediate tank is respectively connected with the cleaning tank, the DMF conveying pipes and the material return pipe through a cleaning pipeline with a centrifugal pump. The spraying system of the impregnator can improve the contact time of materials and slurry, ensure the impregnation effect, facilitate the cleaning and maintenance of the impregnator and realize simple operation in the cleaning process. The continuous supplement of DMF can effectively stabilize the concentration of the slurry and ensure the uniform and stable material impregnation effect.

Description

Spraying system of impregnator

Technical Field

The utility model belongs to the technical field of impregnating equipment, and particularly relates to a spraying system of an impregnating machine.

Background

An impregnator is required to impregnate the PU slurry into the nonwoven fabric. The existing impregnating machine generally comprises a slurry pool filled with PU slurry, a plurality of pairs of rollers are arranged in the slurry, and cloth is rolled and pressed through the rollers while the PU slurry is soaked in the slurry pool, so that the impregnating effect is improved. In order to ensure the dipping effect, the existing dipping machine needs to be provided with a slurry pool with long length for installing a large number of rollers. The rollers are divided into an upper roller positioned on the liquid level of the slurry and a lower roller positioned below the liquid level of the slurry, so that the internal space of the impregnator can be fully utilized, and the length of the slurry tank is shortened. However, the contact time between the material (nonwoven) and the slurry is too short, resulting in poor impregnation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model adopts the technical scheme that: the spraying system of the impregnator comprises a slurry pool and a tank cover covered on the slurry pool, wherein a lower layer roller is arranged in the slurry pool, an upper layer roller is arranged in the tank cover and comprises a plurality of groups of upper roller groups which are sequentially arranged, the lower layer roller comprises a plurality of groups of lower roller groups, the lower roller groups correspond to the upper roller groups one by one, one side of the tank cover is provided with a feed inlet, the other side of the tank cover is provided with a discharge outlet, materials enter the impregnator through the feed inlet and then alternately pass through the lower roller groups and the upper roller groups in sequence and then leave the impregnator from the discharge outlet, slurry is arranged in the slurry pool, the spraying system comprises a middle material tank, a DMF material tank, a cleaning tank and a correction slurry tank, the DMF material tank is connected with a plurality of groups of DMF spray head groups through a DMF conveying pipe, each group of DMF spray head groups comprises a plurality of DMF spray heads which are connected in series, and the DMF spray head groups are arranged in the tank cover and respectively correspond to the upper roller groups, the height that highly is higher than last roll set of DMF shower nozzle group, the thick liquids pond passes through the overflow pipe and connects middle material jar, mends and corrects thick liquids jar through mending thick liquids union coupling middle material jar, and middle material jar has a plurality of thick liquids shower nozzles through the feed back union coupling that has the elevator pump, and the thick liquids shower nozzle is located the case lid and is close to the lower extreme of case lid, middle material jar is connected respectively through the washing pipeline that has the centrifugal pump and is washd jar, DMF conveyer pipe and feed back pipe.

Preferably, the slurry nozzles are divided into a plurality of groups, each group of slurry nozzles corresponds to one group of lower roll set, each group of slurry nozzles comprises two slurry nozzles, and the material leaves the lower roll set and then passes through between the two slurry nozzles of the corresponding group of slurry nozzles.

Preferably, the slurry spray head is connected with the feed back pipe through a feed back pipe branch pipe respectively, the feed back pipe is provided with a valve and a pressure gauge, and the feed back pipe branch pipe is provided with a valve.

Preferably, the slurry in the intermediate charging bucket is pressurized by the lift pump, then passes through the pressure gauge and then enters the return pipe branch pipes respectively, and the return pipe between the lift pump and the pressure gauge is connected with the intermediate charging bucket through a return bypass pipe with a valve.

Preferably, the intermediate charging bucket is provided with a liquid level meter and a temperature detector.

Preferably, the DMF nozzle set is connected to a DMF conveying pipe through a DMF conveying branch pipe, and valves are respectively arranged on the DMF conveying branch pipe and the DMF conveying pipe.

Preferably, a valve is arranged before the cleaning pipeline is connected with the cleaning tank, a valve is arranged before the cleaning pipeline is connected with the DMF conveying pipe, a valve is arranged before the cleaning pipeline is connected with the feed back pipe, a check valve used for preventing liquid from flowing to the DMF tank is arranged on the DMF conveying pipe, and valves are respectively arranged in the front of and behind the lift pump and in the front of and behind the centrifugal pump.

Preferably, a material return pipe between the lift pump and the pressure gauge is connected with a material discharge pipe, and a valve is arranged on the material discharge pipe.

Preferably, the bottom of the slurry pool is connected with the intermediate charging bucket through a clean pipe with a valve.

The utility model has the beneficial effects that: the spraying system of the impregnator can improve the contact time of materials and slurry, ensure the impregnation effect, facilitate the cleaning and maintenance of the impregnator and realize simple operation in the cleaning process. The continuous supplement of DMF can effectively stabilize the concentration of the slurry and ensure the uniform and stable material impregnation effect.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the spraying system of the impregnator, the impregnator includes a slurry tank 1 and a tank cover 2 covering the slurry tank 1, a lower layer roller is installed in the slurry tank 1, an upper layer roller is installed in the tank cover 2, the upper layer roller includes a plurality of groups of upper roller sets 3, the upper roller sets 3 are sequentially arranged in the tank cover 2, each group of upper roller sets 3 includes a plurality of upper rollers 4, the upper rollers 4 in each group of upper roller sets 3 are sequentially arranged from bottom to top, an upper binding point 5 is formed between the adjacent upper rollers 4 in the same group of upper roller sets 3, and the upper rollers 4 are respectively and rotatably installed on the tank cover 2. The lower layer roller comprises a plurality of groups of lower roller sets 6, each group of lower roller sets 6 comprises at least two pairs of lower rollers 7 arranged in parallel, each pair of lower rollers 7 comprises a plurality of lower rollers 8, the lower rollers 8 in each pair of lower rollers 7 are sequentially arranged from bottom to top, a lower rolling point 9 is formed between every two adjacent lower rollers 8 in each pair of lower rollers 7, and the lower rollers 8 are respectively rotatably arranged in the slurry pool 1. One side of the box cover 2 is provided with a feed inlet 12, the other side is provided with a discharge outlet 13, a material 10 enters the impregnator through the feed inlet 12 and then alternately passes through a lower roll group 6 and an upper roll group 3 in turn and then leaves the impregnator from the discharge outlet 13, a slurry is arranged in the slurry tank 1, the spraying system comprises an intermediate tank 300, DMF tanks 301, a cleaning tank 302 and a correction slurry tank 303, the DMF tanks 301 are connected with a plurality of groups of DMF spray head groups through DMF conveying pipes 304, each group of DMF spray head groups comprises a plurality of DMF spray heads 305 connected in parallel in series, the DMF spray head groups are arranged in the box cover 2 and respectively correspond to the upper roll group 3, the height of the DMF spray head groups is higher than that of the upper roll group 3, the slurry tank 1 is connected with the intermediate tank 300 through an overflow pipe 306, the correction slurry tank 303 is connected with the intermediate tank 300 through the correction slurry pipe 307, the intermediate tank 300 is connected with a plurality of slurry spray heads 310 through a material return pipe 309 with a lifting pump 308, the slurry spray head 310 is located in the tank cover 2 and close to the lower end of the tank cover 2, and the intermediate tank 300 is connected with the cleaning tank 302, the DMF delivery pipe 304 and the return pipe 309 through a cleaning pipeline 312 with a centrifugal pump 311. In the dipping production process of the dipping machine, slurry overflowing from the slurry pool 1 enters the intermediate material tank 300, the slurry in the intermediate material tank 300 is sprayed out from the slurry spray head 310 under the pressure application effect of the lifting pump 308, and the slurry is sprayed on the material 10 positioned on the slurry liquid level between the lower roll set 6 and the corresponding upper roll set 3, so that the contact time of the material and the slurry is prolonged, and the dipping effect is ensured. The correction slurry tank 303 supplies slurry to the intermediate tank 300, so that the amount of slurry in the slurry tank is stable. During the dipping production process, DMF is supplemented into the slurry pool by a DMF material tank 301 through a DMF spray head 305, so that the concentration of the slurry in the slurry pool is stabilized. After the dipping production is finished, the DMF tank 301 fills DMF into the slurry pool 1 to wash the slurry pool 1, DMF cleaning solution enters the intermediate tank 300 and returns to the DMF spray head 305 under the action of the centrifugal pump 311, and the DMF cleaning solution is repeatedly used for many times. Finally, the DMF cleaning solution enters a cleaning tank 302 for collection treatment.

Further, the slurry nozzles 310 are divided into a plurality of groups, each group of slurry nozzles 310 corresponds to one group of the lower roll set 6, each group of slurry nozzles 310 includes two slurry nozzles 310, and the material 10 leaves the lower roll set 6 and passes between the two slurry nozzles 310 of the corresponding group of slurry nozzles 310.

Further, the slurry nozzle 310 is connected to the feed back pipe 309 through a feed back pipe branch pipe 313, the feed back pipe 309 is provided with a valve 314 and a pressure gauge 315, and the feed back pipe branch pipe 313 is provided with a valve 314.

Further, the slurry in the intermediate tank 300 is pressurized by the lift pump 308, passes through the pressure gauge 315, and then enters the return pipe branch pipes 313, and the return pipe 309 between the lift pump 308 and the pressure gauge 315 is connected to the intermediate tank 300 through the return bypass pipe 316 with the valve 314.

Further, a liquid level meter 317 and a temperature detector 318 are installed on the intermediate tank 300.

Further, the DMF nozzle sets are connected to the DMF conveying pipes 304 through DMF conveying branch pipes 318, and valves 314 are respectively disposed on the DMF conveying branch pipes 318 and the DMF conveying pipes 304.

Further, a valve 314 is arranged before the cleaning pipeline 312 is connected with the cleaning tank 302, a valve 314 is arranged before the cleaning pipeline 312 is connected with the DMF delivery pipe 304, a check valve 319 for preventing liquid from flowing to the DMF tank 301 is arranged on the DMF delivery pipe 304, and valves are respectively arranged in front of and behind the lift pump 308 and in front of and behind the centrifugal pump 311. The check valve 319 prevents the DMF rinse from flowing back into the DMF tank 301.

A material return pipe 309 between the lift pump 308 and the pressure gauge 315 is connected with a material discharge pipe 321, and a valve 314 is arranged on the material discharge pipe 321. All the slurry in the slurry tank 1 is discharged through the discharge pipe 321.

Further, the bottom of the slurry tank 1 is connected with the intermediate material tank 300 through a material cleaning pipe 320 with a valve 314. Valve 314 on purge line 320 is opened when DMF is used to purge or drain all the slurry in slurry tank 1.

It should be noted that the technical features of the lift pump 308, the centrifugal pump 311, the valve 314, the check valve 319, the pressure gauge 315, the level gauge 317, the temperature detector 318, etc. related to the present patent application should be regarded as the prior art, the specific structure, the operation principle, the control mode and the spatial arrangement mode of the technical features may be conventional in the art, and should not be regarded as the utility model point of the present patent, and the present patent is not further specifically described.

Having described preferred embodiments of the present invention in detail, it is to be understood that modifications and variations may be resorted to without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (9)

1. The spraying system of the impregnator comprises a slurry pool and a tank cover covered on the slurry pool, wherein a lower layer roller is arranged in the slurry pool, an upper layer roller is arranged in the tank cover and comprises a plurality of groups of upper roller groups which are sequentially arranged, the lower layer roller comprises a plurality of groups of lower roller groups, the lower roller groups correspond to the upper roller groups one by one, one side of the tank cover is provided with a feed inlet, the other side of the tank cover is provided with a discharge outlet, materials enter the impregnator through the feed inlet and then alternately pass through the lower roller groups and the upper roller groups in sequence and then leave the impregnator from the discharge outlet, and slurry is arranged in the slurry pool. The height that highly is higher than last roll set of DMF shower nozzle group, the thick liquids pond passes through the overflow pipe and connects middle material jar, mends and corrects thick liquids jar through mending thick liquids union coupling middle material jar, and middle material jar has a plurality of thick liquids shower nozzles through the feed back union coupling that has the elevator pump, and the thick liquids shower nozzle is located the case lid and is close to the lower extreme of case lid, middle material jar is connected respectively through the washing pipeline that has the centrifugal pump and is washd jar, DMF conveyer pipe and feed back pipe.

2. The spray system of an impregnator according to claim 1, wherein the slurry nozzles are divided into a plurality of groups, each group of slurry nozzles corresponding to a lower roll set, each group of slurry nozzles including two slurry nozzles, and the material leaving the lower roll set passes between the two slurry nozzles of the corresponding group of slurry nozzles.

3. The spraying system of the impregnator according to claim 2, wherein the slurry nozzles are respectively connected with the feed back pipes through feed back pipe branch pipes, the feed back pipes are provided with valves and pressure gauges, and the feed back pipe branch pipes are provided with valves.

4. The spraying system of the impregnator according to claim 3, wherein the slurry in the intermediate charging bucket passes through the pressure gauge after being pressurized by the lift pump and then respectively enters the return pipe branch pipes, and the return pipe between the lift pump and the pressure gauge is connected with the intermediate charging bucket through a return bypass pipe with a valve.

5. The spraying system of the impregnator according to claim 4, wherein the intermediate charging bucket is provided with a liquid level gauge and a temperature detector.

6. The spraying system of an impregnator according to claim 5, wherein the DMF spray head group is connected with a DMF conveying pipe through a DMF conveying branch pipe, and valves are respectively arranged on the DMF conveying branch pipe and the DMF conveying pipe.

7. The spraying system of the impregnator according to claim 6, wherein a valve is arranged before the cleaning pipeline is connected with the cleaning tank, a valve is arranged before the cleaning pipeline is connected with the DMF delivery pipe, a check valve for preventing liquid from flowing to the DMF tank is arranged on the DMF delivery pipe, and valves are respectively arranged in the front and the rear of the lift pump and in the front and the rear of the centrifugal pump.

8. The spraying system of an impregnator according to claim 7, wherein a discharge pipe is connected to the return pipe between the lift pump and the pressure gauge, and a valve is mounted on the discharge pipe.

9. The impregnator spray system according to claim 8, wherein the bottom of the slurry tank is connected to the intermediate tank through a clean pipe with a valve.

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