CN113967659A

CN113967659A - Leather waste treatment equipment

Info

Publication number: CN113967659A
Application number: CN202111320688.8A
Authority: CN
Inventors: 张昭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-01-25

Abstract

The invention relates to a leather waste treatment device, which comprises a soaking pool and a rotary drum arranged horizontally; the rotary drum is arranged in the soaking tank, the side wall of the rotary drum is a filter screen, a spraying pipe is erected above the rotary drum, and a rotating shaft is arranged in the rotary drum and used for driving the rotary drum to rotate; reinforcing ribs are arranged on the outer side of the side wall of the rotary drum; the rotating shaft is fixedly connected with the inner side of the side wall of the rotary drum corresponding to the position of the reinforcing rib through a plurality of supporting rods. According to the leather waste treatment equipment provided by the invention, the chromium-containing blue leather filaments are added into the rotary drum for treatment, the leather waste does not need to be taken out of the rotary drum in the processes of alkali leaching, pickling and washing until the leather waste is prepared into the gelatin solution, part of residues generated in the preparation process can be limited in the rotary drum, the gelatin solution can be discharged from the filter layer of the rotary drum, the whole preparation process is more convenient to operate, and the device can cover all steps from alkali leaching to primary filtration, and is high in integration level.

Description

Leather waste treatment equipment

Technical Field

The invention relates to the technical field of chemical equipment, in particular to leather waste treatment equipment for preparing industrial glue and industrial protein by utilizing waste leather.

Background

In the leather production process, a large amount of leather waste such as chrome-containing blue leather silk, blue leather blocks and the like is generated, and the leather waste is recycled and reprocessed into materials such as industrial glue, industrial protein and the like due to the consideration of energy conservation and environmental protection.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a leather waste treatment device, which comprises a soaking pool and a rotary drum arranged horizontally; the rotary drum is arranged in the soaking pool, the side wall of the rotary drum is a filter screen, a spray pipe is erected above the rotary drum, a rotating shaft is arranged in the rotary drum, and the rotating shaft is used for driving the rotary drum to rotate; reinforcing ribs are arranged on the outer side of the side wall of the rotary drum; the rotating shaft is fixedly connected with the inner side of the side wall of the rotary drum corresponding to the position of the reinforcing rib through a plurality of support rods.

The drum comprises two halves and a connecting ring, wherein each half comprises a bottom plate and a side wall, and one ends of the side walls of the two halves, which are far away from the bottom plate, are rotatably embedded with two sides of the connecting ring;

the bottom of the outer side of the connecting ring is provided with a fixed rod, one end of the fixed rod, which is far away from the connecting ring, is fixedly connected with the bottom of the soaking pool, and the connecting ring is provided with a through water inlet pipe.

One end of the water inlet pipe, which is positioned in the rotary drum, is provided with a water distribution pipe which is coaxial with the rotary shaft, and the support rods are positioned on two sides of the water distribution pipe in the axial direction.

Wherein, a plurality of spray heads are arranged on the upper side and the lower side of the water distribution pipe.

Wherein, a through air exhaust pipe is arranged on the connecting ring.

Wherein, a liquid inlet and a liquid outlet are arranged on the side wall of the soaking pool.

The top of the side wall of the soaking pool is provided with at least one sampling mechanism, and the sampling mechanism is a pulley sampling mechanism.

The top of the side wall of the soaking tank is provided with a plurality of arc-shaped supports, the supports are arranged at intervals along the axial direction of the rotary drum, and the supports are used for erecting the spray pipes.

Wherein, the operating floor is arranged around the outer side of the soaking pool.

Wherein, a feed inlet is arranged on the side wall of the rotary drum.

The invention has the beneficial effects that: according to the leather waste treatment equipment provided by the invention, the chromium-containing blue leather filaments are added into the rotary drum for treatment, the leather waste does not need to be taken out of the rotary drum in the processes of alkali leaching, acid leaching and water washing until the leather waste is prepared into the gelatin solution, the residues generated in the preparation process can be limited in the rotary drum, the gelatin solution can be discharged from the filter layer of the rotary drum, the whole preparation process is more convenient to operate, and the device can cover the steps from alkali leaching to primary filtration, and is high in integration level.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a perspective view of a first embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of a rotating drum (not shown) according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a sampling mechanism according to an embodiment of the present invention;

FIG. 4 is a perspective view of a second drum according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view along AA of FIG. 4 of the present invention;

fig. 6 is an exploded view of fig. 5 of the present invention.

Description of the reference numerals

1. The device comprises a rotary drum, 11, reinforcing ribs, 12, a filter screen, 13, supporting rods, 14, a rotating shaft, 15, a feeding port, 16, a connecting ring, 17, a half part, 2, a soaking pool, 21, a liquid inlet pipe, 22, a liquid discharge pipe, 3, a driving shaft rod, 4, an operation table, 5, a support, 51, a spray pipe, 52, a water inlet pipe, 53, a water distribution pipe, 54, an air exhaust pipe, 6, a sampling mechanism, 61 and pulleys.

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Example one

As shown in fig. 1, 2 and 3, the leather waste treatment equipment provided for the embodiment comprises a soaking pool 2 and a horizontally arranged rotary drum 1, wherein the rotary drum 1 consists of a side wall and two circular bottom plates (not marked);

the rotary drum 1 is arranged in the soaking tank 2, the side wall of the rotary drum 1 is a filter screen 12, the filter screen 12 can be a metal filter screen, liquid in the soaking tank 2 can penetrate through the filter screen 12 to enter the rotary drum, and the side wall of the rotary drum 1 is provided with a hinged feeding hole 15.

2 lateral wall tops in fermentation vat set up a plurality of curved supports 5, and a plurality of supports 5 are along 1 axial interval arrangements settings of revolving drum for erect the shower that is located 1 top of revolving drum, shower 51 is connected with outside cistern, and shower 51 below sets up a plurality of high pressure nozzle (not drawn), can set up heat source import (not drawn) on 2 lateral walls in fermentation vat.

The rotating shaft 14 is arranged in the rotary drum 1, the rotating shaft 14 is used for driving the rotary drum 1 to rotate, the rotating shaft 14 can be fixedly connected with two ends of the rotary drum 1 to provide torsion, in order to enable the rotary drum 1 to obtain larger torsion and better stability, the rotating shaft 14 can be connected with the positions, corresponding to the reinforcing ribs 11, of the inner side of the side wall of the rotary drum through a plurality of support rods 13, and the support rods 13 can play a certain role in assisting in stirring the leather waste;

the drive shaft 3 that runs through is set up on the 2 lateral walls of fermentation vat, and drive shaft 3 is used for drive shaft 14 to rotate, and drive shaft 3 is by external motor power, and drive shaft 3 and pivot 14 can be a whole axostylus axostyle.

In addition, set up inlet 21 and drain 22 on the 2 lateral walls of fermentation vat for export and the interior liquid of

output fermentation vat

2, and 2 lateral wall tops of fermentation vat set up at least one sampling mechanism 6, sampling mechanism 6 is pulley sampling mechanism, it has the pulley 61 of erectting at 2 lateral wall tops of fermentation vat, set up the suspension wire on the pulley 61, the one end that the suspension wire is located 2 insides of fermentation vat sets up the well-bucket, utilize 6 staff of this sampling mechanism to take a sample in order to detect its pH value and other data to the liquid of 2 insides of fermentation vat.

Meanwhile, the operating platform 4 is arranged around the outer side of the soaking pool 2, so that sampling and other operations are convenient.

Taking chromium-containing blue leather silk as an example for preparing industrial glue, the working principle of the invention is as follows: chrome-containing blue leather filaments (leather waste) are added into the rotary drum 1 through the feed inlet 15, alkali liquor in an external alkali liquor pool is added into the soaking pool 2 through the liquor inlet pipe 21 for alkali leaching, and meanwhile, the rotary drum 1 is driven to rotate through the driving shaft rod 3 for alkali leaching.

The purpose of the caustic dip is to break some of the chemical cross-links present in the collagen, impart toughness, and remove impurities, other proteins, carbohydrates, and the like.

The waste gas pollution source is mainly malodorous gas G2-1 generated in the alkali leaching process, the main pollutants are ammonia, hydrogen sulfide and odor concentration, therefore, gas collecting hoods can be respectively arranged above the rotary drum, and the waste gas is collected by the gas collecting hoods, treated by an alkali spray tower and an active carbon adsorption device and discharged by an exhaust funnel.

After the alkali leaching is finished, the alkali liquor is discharged through the liquid discharge pipe 22 to be recycled, the collagen subjected to the alkali leaching treatment needs to be washed by fresh water discharged through the spray pipe 51, and meanwhile, clear water is also added into the soaking pool 2 to wash away impurities and waste alkali on the leather.

And discharging the wastewater after the water washing is finished, and adopting pickling. A certain amount of sulfuric acid solution and water are added into the soaking pool 2 through a liquid inlet pipe 21, fully stirred on time, and then are subjected to pickling neutralization treatment, and acid liquor is discharged through a liquid discharge pipe 22 after pickling is finished and is to be recycled.

After the pickling is finished, the waste water in the soaking pool 2 is discharged through the liquid discharge pipe 22, it should be noted that the waste water in the rotary drum 1 can seep out of the rotary drum 1 and be discharged at the same time, the same principle is adopted during the pickling, and the waste gas treatment and the pickling are performed at the same time.

And adding clear water through the spray pipe 51 again for water washing until the waste scraps are completely reduced from blue leather scraps into white fresh raw materials.

Then, a heat source (not shown) is introduced into the soaking pool through a heat source inlet (not shown), the heat source can be high-temperature hot water, the leather waste is heated, hydrogen bonds of collagen are broken under the heating of the hot water, the ternary spiral structure is disintegrated, and mild hydrolysis is further carried out to obtain a dilute gelatin solution, the gelatin solution seeps out from a filter screen 12 on the side wall of the rotary drum 1 and is discharged through a liquid discharge pipe 22, impurities in the preparation process are intercepted by the filter layer 12, primary filtration is completed, and the discharged gelatin solution is filtered, concentrated, dried and packaged to obtain an industrial gelatin product.

Example two

The difference between the present embodiment and the first embodiment is that, as shown in fig. 4 to 6, the rotary drum 1 is composed of two halves 17 and the connecting ring 16, the half 17 includes a bottom plate and a side wall, one end of the side wall of the two halves 17 far from the bottom plate is rotatably embedded with two sides of the connecting ring 16, that is, two sides of the connecting ring 16 have annular grooves, the side wall of the half 17 is embedded in the grooves, balls are arranged in the grooves, so that the two halves 17 are combined into the rotary drum 1 through the connection of the connecting ring 16, and the half 17 can rotate relative to the connecting ring 16, and the plurality of support rods 13 are fixedly connected with the side wall of the rotary drum 1 and the rotating shaft 14 at the same time, so that the two halves 17 can rotate synchronously;

and a fixing rod (not shown) is arranged at the bottom of the outer side of the connecting ring 16, one end of the fixing rod far away from the connecting ring 16 is fixedly connected with the bottom of the soaking pool 2, so that the connecting ring 16 can be kept still when the half part 17 rotates, and a water inlet pipe 52 penetrating through the connecting ring 16 is arranged.

The theory of operation of this embodiment does, when needs carry out the washing, can be when rotary drum 1 rotates, wash the rotary drum 1 inside and outside simultaneously through inlet tube 52 and shower 51, and it is higher to wash more thorough efficiency.

In order to further improve the cleaning efficiency inside the rotary drum 1, a water distribution pipe 53 coaxial with the rotating shaft 14 may be disposed at one end of the water inlet pipe 52 inside the rotary drum 1, a plurality of nozzles (not shown) may be disposed on both upper and lower sides of the water distribution pipe 53, and a plurality of support rods 13 may be disposed on both sides of the water distribution pipe 53 in the axial direction.

Meanwhile, since the malodorous gas is generated in the production process, the gas collecting hood above the rotary drum 1 is not enough, and the malodorous gas can be continuously released in the rotary drum 1, so that a through gas extraction pipe 54 can be arranged on the connecting ring 16 to assist in the collection of the malodorous gas as shown in fig. 4.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. 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.

Claims

1. The leather waste treatment equipment is characterized by comprising a soaking pool and a rotary drum which is horizontally arranged;

the rotary drum is composed of a side wall and two circular bottom plates, the rotary drum is arranged in the soaking pool, the side wall of the rotary drum is a filter screen, a spray pipe is erected above the rotary drum, a rotating shaft is arranged in the rotary drum, and the rotating shaft is used for driving the rotary drum to rotate;

reinforcing ribs are arranged on the outer side of the side wall of the rotary drum;

the rotating shaft is fixedly connected with the inner side of the side wall of the rotary drum through a plurality of supporting rods.

2. The leather waste treatment apparatus of claim 1, wherein the drum is composed of two halves and a connecting ring, the halves include a bottom plate and side walls, and one ends of the side walls of the two halves, which are far away from the bottom plate, are rotatably engaged with two sides of the connecting ring;

3. The leather waste treatment apparatus according to claim 2, wherein a water distribution pipe coaxial with the rotating shaft is provided at one end of the water inlet pipe located inside the rotary drum, and the plurality of support rods are located at both sides of the water distribution pipe in the axial direction.

4. The leather waste treatment apparatus according to claim 3, wherein a plurality of nozzles are provided on both upper and lower sides of the water distributor.

5. The leather waste treatment apparatus of claim 4, wherein the connecting ring is provided with a suction pipe therethrough.

6. The leather waste treatment apparatus according to any one of claims 1 to 5, wherein a liquid inlet and a liquid outlet are provided on a side wall of the soaking tank.

7. The leather waste treatment equipment according to any one of claims 1 to 5, wherein at least one sampling mechanism is arranged at the top of the side wall of the soaking pool, and the sampling mechanism is a pulley sampling mechanism.

8. The leather waste treatment apparatus according to any one of claims 1 to 5, wherein a plurality of arc-shaped brackets are arranged at the top of the side wall of the soaking tank, the brackets are arranged at intervals along the axial direction of the rotary drum, and the brackets are used for erecting the spray pipes.

9. The leather waste treatment apparatus according to any one of claims 1 to 5, wherein the operation table is provided around the outside of the soaking bath.

10. The leather waste treatment apparatus of any one of claims 1 to 5, wherein a feed inlet is provided in the side wall of the drum.