Leather tanning bath lotion filtering device

Abstract

The utility model discloses a leather tanning bath lotion filtering device, which belongs to the field of filtering equipment and comprises a shell, a filtering component and a filtrate discharging component. The filter assembly comprises a filter cartridge, a water inlet pipe, a slag discharge pipe, a spiral core and a driving part; the filter cartridge comprises a sleeve and a filter screen cartridge, the sleeve and the filter screen cartridge are communicated with each other, and one end of the sleeve extends out of the shell; the filter screen cylinder is arranged in the shell; the water inlet pipe is communicated with the filter screen cylinder; the slag discharge pipe is communicated with the sleeve; the spiral core is arranged in the filter cartridge; the driving piece is in transmission connection with the spiral core; the filtrate discharging assembly comprises a first water discharging pipe which is arranged in the shell, and the end of the first water discharging pipe extends out of the shell. Liquid to be treated enters the filter cartridge through the water inlet pipe, the spiral core is driven by the driving part to rotate, filtrate flows into the shell through the meshes of the filter cartridge, and impurities in the liquid to be treated are discharged from the slag discharge pipe under the action of the spiral core, so that liquid filtration is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering equipment, in particular to a leather tanning bath filtering device. Background Art

[0002] Tanning is a critical step in leather processing. It transforms raw hides into stable and durable leather by treating them with specific chemical baths. During the tanning process, impurities and insoluble particles in the baths must be removed. Otherwise, these impurities will adhere to the leather surface, causing discoloration and affecting its quality.

[0003] Existing filters usually use a rotary screen filter similar to that used in sewage treatment plants. This type of filter is equipped with two rotating stainless steel screens. The leather tanning bath is discharged from the drum drain tank and flows into the filter through a pipe. The water flows out through the stainless steel screen and is pumped back into the drum. Impurities are retained between the two stainless steel screens and then discharged from the machine as it rotates. The stainless steel screens are rinsed with water using nozzles.

[0004] During use, the aforementioned filter cannot completely clean the screen by simply spraying water from the nozzle. Impurities are difficult to remove, and the screen surface quickly becomes clogged with impurities, affecting filtration efficiency. Furthermore, the filter uses the same drainage channel during self-flushing and filtration operations. To prevent self-flushing water from entering the drum, the drainage channel connection must be constantly adjusted, increasing workload. Furthermore, foam generated during filtration requires additional measures to eliminate it. Finally, the filter's automation performance is low, requiring operator control based on the filtration situation. Utility Model Content

[0005] The purpose of the utility model is to provide a leather tanning bath filtering device to solve the problems in the above-mentioned background technology that impurities are difficult to discharge, the screen is easily blocked, the connection relationship of the drainage channel needs to be adjusted multiple times, additional defoaming measures need to be taken, and the filtering process needs to be manually controlled.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A leather tanning bath filtering device comprises a shell, a filter assembly and a filtrate discharge assembly; the filter assembly comprises a filter cartridge, a water inlet pipe, a slag discharge pipe, a spiral core and a drive member; the filter cartridge comprises a sleeve and a filter cartridge, the sleeve and the filter cartridge are arranged in communication with each other, one end of the sleeve extends to the outside of the shell and is connected to the shell; the filter cartridge is arranged in the shell; the water inlet pipe is arranged in communication with the filter cartridge, and its end extends to the outside of the shell; the slag discharge pipe is communicated with the sleeve, and its end is arranged outside the shell; the spiral core is arranged in the filter cartridge; the drive member is transmission-connected to the spiral core; the filtrate discharge assembly comprises a first drain pipe, the first drain pipe is arranged in the shell, and its end extends to the outside of the shell.

[0008] Furthermore, it also includes a cleaning component, which includes a nozzle and a regulating valve; the nozzle is arranged in the shell and is connected to a spray head; the regulating valve is connected to the nozzle and is connected to a clean water pipe.

[0009] Furthermore, it also includes a defoaming component, which includes a storage box and a diaphragm pump; defoaming liquid is set inside the storage box; the diaphragm pump is connected to the storage box and communicated with the nozzle through a liquid delivery pipe.

[0010] Furthermore, it also includes a drainage component, which includes a second drain pipe and a drain valve; the second drain pipe is arranged in the shell, and its end extends outside the shell; the drain valve is arranged on the second drain pipe to control the flow of liquid in the second drain pipe.

[0011] Furthermore, the filtrate discharge assembly also includes a water pump; the water pump is connected to the first drain pipe.

[0012] Furthermore, the driving member includes a motor and a rotating shaft, and the rotating shaft is connected to the power output end of the motor; the spiral core is arranged on the rotating shaft and is a spiral blade, and a brush is provided on the outer edge of the spiral blade, and the brush contacts the inner wall of the filter cartridge.

[0013] Furthermore, the filtrate discharge assembly further includes a water level sensor, which is disposed in the housing.

[0014] Furthermore, the defoaming component also includes a foam sensor, which is arranged in the shell.

[0015] Furthermore, the spiral core is a spiral blade, and a brush is provided on the outer edge of the spiral blade, and the brush contacts the inner wall of the filter cartridge.

[0016] Furthermore, the filter cylinder is a Johnson screen.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model provides a leather tanning bath filtering device. The liquid to be treated enters the filter cartridge through the water inlet pipe, and the spiral core is driven to rotate by the driving member. The filtrate flows into the shell through the mesh of the filter cartridge. Impurities in the liquid to be treated are discharged from the slag discharge pipe under the action of the spiral core, thereby realizing liquid filtration.

[0019] 2. The utility model provides a leather tanning bath filtering device, in which a brush is provided on the edge of the spiral core. During the rotation of the spiral core, the brush continuously cleans the inner wall of the filter cylinder, effectively avoiding clogging of the screen.

[0020] 3. The utility model provides a leather tanning bath filtering device, which is provided with a defoaming component, and can achieve defoaming synchronously inside the device, which is simple and fast.

[0021] 4. The utility model provides a leather tanning bath filtering device, which uses different drainage channels for self-cleaning drainage and filtering drainage, and there is no need to adjust the connection relationship between the devices.

[0022] 5. The utility model provides a leather tanning bath filtering device, which realizes automatic filtering, drainage, cleaning and defoaming of the filtering device through a control system without manual intervention, reducing workload and improving filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the filtering device involved in the present utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the filtering device involved in the present utility model;

[0025] Figure 3 This is a schematic diagram of the filter cartridge involved in the present utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the spiral core involved in the present utility model.

[0027] In the figure: 1-shell, 2-filter assembly, 21-filter cartridge, 22-water inlet pipe, 23-slag discharge pipe, 24-drive member, 25-spiral core, 3-filtrate discharge assembly, 31-water pump, 32-first drain pipe, 4-cleaning assembly, 41-spray pipe, 42-regulating valve, 5-defoaming assembly, 51-storage box, 6-drainage assembly, 61-second drain pipe, 62-drain valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figure 1 、 2 As shown in Figures 4 and 5, the present invention provides a leather tanning bath filtering device, comprising a housing 1, a filtering assembly 2, a filtrate discharge assembly 3, a cleaning assembly 4, and a defoaming assembly 5. A cavity is provided inside the housing 1.

[0030] The filter assembly 2 includes a filter cartridge 21, an inlet pipe 22, a discharge pipe 23, a spiral core 25, and a drive member 24. The filter cartridge 21 is disposed within the housing 1 and has mesh holes on its surface. The inlet pipe 22 is connected to the filter cartridge 21, and its end extends outside the housing 1. The discharge pipe 23 is connected to the filter cartridge 21, and its end is disposed outside the housing 1. The spiral core 25 is disposed within the filter cartridge 21, and its length is aligned with the axis of the filter cartridge 21. The drive member 24 is in transmission connection with the spiral core 25, driving the spiral core 25 to rotate. The liquid to be treated enters the filter cartridge 21 through the inlet pipe 22, and the spiral core 25 is driven to rotate by the drive member 24. The filtrate flows into the housing 1 through the mesh holes of the filter cartridge 21. Larger particles in the liquid to be treated are discharged from the discharge pipe 23 under the action of the spiral core 25, thereby achieving liquid filtration.

[0031] The filter cartridge 21 is arranged obliquely upward, with a bottom plate at its bottom and a top plate at its top. The bottom plate can be a filter plate or a plate without holes; the top plate provides a mounting base for the drive member 24. Figure 3 As shown, the filter cartridge 21 comprises a sleeve and a filter screen. The sleeve and filter screen are interconnected, preferably butted together, with the sleeve axis and the filter screen axis aligned. The sleeve end extends outside the housing 1 and is connected thereto. A slag discharge pipe 23 is located outside the housing 1 and is in communication with the sleeve. The water inlet pipe 22 is connected to the underside of the filter cartridge 21. A dustpan-shaped slag discharge cover is provided at the end of the slag discharge pipe 23.

[0032] The preferred filter cartridge is a Johnson screen. The Johnson screen's continuous gaps significantly increase the water flow area, providing better contact with the aquifer. Furthermore, its V-shaped cross-section prevents clogging, ensuring smooth flow. Furthermore, the continuous pores ensure long-term, effective use. Furthermore, the Johnson screen offers a sturdy structure, high porosity, and precise gap size. Finally, the Johnson screen is easy to backwash, has a long service life, is safe and reliable, and has a low overall cost.

[0033] The drive element 24 comprises a motor and a rotating shaft connected to the motor's power output. A spiral core 25 is mounted on the rotating shaft. The spiral core 25 is a spiral blade with a brush mounted on its outer edge. The brush contacts the inner wall of the filter cartridge 21 to prevent clogging of the filter screen. Preferably, the motor is mounted on the top plate of the filter cartridge 21.

[0034] The filtrate discharge assembly 3 includes a first drain pipe 32, which is disposed within the housing 1 and extends to the outside of the housing 1 to discharge the filtrate from the housing 1. The filtrate discharge assembly 3 also includes a water pump 31 and a water level sensor. The water pump 31 is disposed within the housing 1 and connected to the first drain pipe 32. The water pump 31 pumps the filtrate to the outside of the housing 1. The water level sensor is disposed within the housing 1.

[0035] Cleaning assembly 4 includes a nozzle 41 and a regulating valve 42. The nozzle 41 is disposed within the housing 1 and is connected to a spray head. One end of the nozzle 41 extends out of the housing 1. The regulating valve 42 is connected to the nozzle 41 and is connected to a clean water pipe. Clean water is sprayed into the interior of the housing 1 through the clean water pipe, nozzle 41, and spray head to rinse and clean the interior of the housing 1. The regulating valve 42 is used to control the flow of clean water. Preferably, the nozzle 41 is disposed at the upper portion of the housing 1.

[0036] The defoaming component 5 includes a storage box 51, a diaphragm pump and a foam sensor; the defoaming liquid is set inside the storage box 51; the diaphragm pump is connected to the storage box 51 and communicates with the nozzle 41 through a liquid feeding pipe; the foam sensor is set in the housing 1.

[0037] The device also includes a drain assembly 6, which includes a second drain pipe 61 and a drain valve 62. The second drain pipe 61 is disposed within the housing 1, with its end extending outside the housing 1. The drain valve 62 is disposed on the second drain pipe 61 and is used to control the flow of liquid within the second drain pipe 61. Clean water used to clean the housing 1 is discharged from the housing 1 via the second drain pipe 61. Preferably, the drain pipe 61 is located at the bottom of the housing 1.

[0038] A leather tanning bath filtering device is also provided with a control system, which includes a control unit, a sensing unit, an execution unit and a user interface;

[0039] A control unit is used to receive signals from the sensing unit, process the signals, and generate control instructions according to a preset logic or algorithm; the control unit is a controller;

[0040] The sensing unit is used to monitor environmental parameters within the housing 1 and convert the monitoring results into electrical signals and send them to the control unit. The sensing unit includes a foam sensor and a water level sensor. The foam sensor and the water level sensor are both arranged within the housing 1 and are used to sense foam generation and water level height within the housing 1, respectively.

[0041] The execution unit is used to receive the control instructions of the control unit and perform specific operations according to the control instructions; the execution unit includes a motor, a water pump 31, a diaphragm pump, a regulating valve 42 and a drain valve 62;

[0042] User interface for setting the preset maximum water level, preset minimum water level, preset shutoff time, and monitoring system status.

[0043] Before the liquid to be treated is introduced, a command is sent to the motor through the controller to start the motor.

[0044] After the liquid to be treated is introduced, when the water level sensor senses that the water level inside the shell 1 has reached the preset maximum water level value, it sends a first signal to the controller. The controller receives the first signal from the water level sensor and sends a first instruction to the water pump 31. The water pump 31 receives the first instruction, the water pump 31 starts, and discharges the liquid in the shell 1 out of the shell 1 through the first drain pipe 32; when the water level sensor senses that the water level inside the shell 1 has reached the preset minimum water level value, it sends a second signal to the controller. The controller receives the second signal from the water level sensor and sends a second instruction to the water pump 31. The water pump 31 receives the second instruction, and the water pump 31 shuts down and stops pumping the liquid.

[0045] After the liquid to be treated is introduced, when the foam sensor senses bubbles, it sends a third signal to the controller. The controller receives the third signal sent by the foam sensor and sends a third instruction to the diaphragm pump. The diaphragm pump receives the third instruction and pumps defoaming liquid to the nozzle 41. When the foam sensor senses that there are no bubbles, it sends a fourth signal to the controller. The controller receives the fourth signal sent by the foam sensor and sends a fourth instruction to the diaphragm pump. The diaphragm pump receives the fourth instruction and turns off the diaphragm pump.

[0046] After the liquid to be treated stops being transported, the water pump 31 remains in working condition until the water level sensor senses that the water level inside the shell 1 reaches the preset minimum water level. The water level sensor sends a second signal to the controller, and the controller receives the second signal sent by the water level sensor and sends a second instruction to the water pump 31. The water pump 31 receives the second instruction and stops working.

[0047] After the liquid to be treated stops being delivered and the water pump 31 stops operating, and the water level sensor detects that the water level in housing 1 has stopped changing, it sends a fifth signal to the controller. The controller receives the fifth signal from the water level sensor and issues commands to the regulating valve 42 and drain valve 62, respectively. Upon receiving the corresponding command, regulating valve 42 connects the spray pipe 41 with the clean water pipe, spraying clean water into housing 1. Drain valve 62 receives the corresponding command and opens the second drain pipe 61, allowing clean water to flow out of housing 1 through the second drain pipe 61. When the preset closing time is reached, the controller sends a command to drain valve 62, which receives the command and closes the second drain pipe 61, allowing clean water to continue to accumulate in housing 1.

[0048] When the liquid to be treated stops being transported and clean water is sprayed, the water level sensor senses that the water level inside the shell 1 reaches the preset maximum water level, and sends a first signal to the controller. The controller receives the first signal sent by the water level sensor, and the controller combines the first signal with historical information to send instructions to the regulating valve 42 and the motor. The regulating valve 42 receives the corresponding instruction and stops transporting clean water; the motor receives the corresponding instruction and stops driving.

[0049] The working process of this device is as follows: taking the application of this device in the traditional leather tanning process as an example, the liquid to be treated in the drum is introduced into the water inlet pipe 22, the motor is started by the controller, and the motor drives the spiral core 25 to rotate through the rotating shaft, and the filtrate flows into the shell 1 through the mesh of the filter cartridge 21, and the filter residue is discharged from the residue discharge pipe 23 under the action of the spiral core 25; when the filtrate in the shell 1 reaches the preset maximum water level, the controller starts the water pump 31, and the filtrate is discharged to the outside of the shell 1 through the first drain pipe 32 and continues to be put into the leather tanning; when the filtrate in the shell 1 reaches the preset minimum water level, the controller turns off the water pump 31; when foam is generated in the shell 1, the controller starts the diaphragm pump to spray defoaming liquid into the shell 1; after the liquid to be treated stops being transported , the water pump 31 continues to work until the filtrate in the shell 1 reaches the preset minimum water level, and the water pump 31 is turned off; then, the controller controls the drain valve 62 and the regulating valve 42, the drain valve 62 opens the second drain pipe 61, and the control valve connects the nozzle 41 with the clean water pipe, and the clean water is sprayed into the shell 1 and discharged through the second drain pipe 61; when the preset closing time is reached, the controller controls the drain valve 62 to close the second drain pipe 61, and the clean water gradually accumulates in the shell 1 until the water level reaches the preset maximum value. The controller controls the regulating valve 42 to cut off the connection between the nozzle 41 and the clean water pipe. At this time, the filter cylinder continues to be immersed in the clean water, and the controller turns off the motor at the same time. Before the next filtration starts, the second drain pipe 61 is opened to drain the liquid in the shell 1.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A leather tanning bath filtering device, characterized in that: The invention comprises a housing (1), a filter assembly (2) and a filtrate discharge assembly (3); the filter assembly (2) comprises a filter cartridge (21), a water inlet pipe (22), a slag discharge pipe (23), a spiral core (25) and a driving member (24); the filter cartridge (21) comprises a sleeve and a filter cartridge, the sleeve and the filter cartridge are arranged in communication with each other, one end of the sleeve extends to the outside of the housing (1) and is connected to the housing (1); the filter cartridge is arranged in the housing (1); the water inlet pipe (22) is arranged in communication with the filter cartridge, and its end extends to the outside of the housing (1); the slag discharge pipe (23) is communicated with the sleeve, and its end is arranged outside the housing (1); the spiral core (25) is arranged in the filter cartridge (21); the driving member (24) is transmission-connected to the spiral core (25); the filtrate discharge assembly (3) comprises a first drain pipe (32), the first drain pipe (32) is arranged in the housing (1), and its end extends to the outside of the housing (1).

2. A leather tanning bath filtering device according to claim 1, characterized in that: The cleaning assembly (4) further comprises a cleaning component (4), the cleaning component (4) comprising a nozzle (41) and a regulating valve (42); the nozzle (41) is arranged in the housing (1) and is connected to a spray head; the regulating valve (42) is connected to the nozzle (41) and is connected to a clean water pipe.

3. A leather tanning bath filtering device according to claim 2, characterized in that: It also includes a defoaming component (5), which includes a storage box (51) and a diaphragm pump; defoaming liquid is provided inside the storage box (51); the diaphragm pump is connected to the storage box (51) and communicated with the nozzle (41) through a liquid delivery pipe.

4. The leather tanning bath filtering device according to claim 1, characterized in that: The invention also includes a drainage assembly (6), wherein the drainage assembly (6) includes a second drainage pipe (61) and a drainage valve (62); the second drainage pipe (61) is arranged in the shell (1), and its end portion extends outside the shell (1); the drainage valve (62) is arranged on the second drainage pipe (61) and is used to control the flow of liquid in the second drainage pipe (61).

5. The leather tanning bath filtering device according to claim 1, characterized in that: The filtrate discharge assembly (3) further comprises a water pump (31); the water pump (31) is connected to a first drain pipe (32).

6. The leather tanning bath filtering device according to claim 1, characterized in that: The driving member (24) comprises a motor and a rotating shaft, wherein the rotating shaft is connected to the power output end of the motor; and the spiral core (25) is arranged on the rotating shaft.

7. The leather tanning bath filtering device according to claim 1, characterized in that: The filtrate discharge assembly (3) further comprises a water level sensor, which is arranged in the housing (1).

8. The leather tanning bath filtering device according to claim 3, characterized in that: The defoaming component (5) further comprises a foam sensor, which is arranged in the housing (1).

9. The leather tanning bath filtering device according to claim 1, characterized in that: The spiral core (25) is a spiral blade, and a brush is provided on the outer edge of the spiral blade, and the brush contacts the inner wall of the filter cylinder (21).

10. The leather tanning bath filtering device according to claim 1, characterized in that: The filter cartridge is a Johnson screen.

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