Waste mucilage glue treatment system

Abstract

The utility model relates to the field of viscose fiber production, in particular to a waste viscose treatment system which comprises a filter unit, the filter unit comprises a primary filter, and a backwashing waste viscose outlet of the primary filter is connected with a waste viscose recovery mechanism; a material inlet, a material outlet and a backwashing waste rubber outlet are respectively formed in the primary filter; the waste rubber recovery mechanism comprises a primary waste rubber filter and a secondary waste rubber filter, and the primary filter, the primary waste rubber filter and the secondary waste rubber filter are KK filters; a backwashing waste rubber outlet of the primary filter is connected with a material inlet of the primary waste rubber filter, and a backwashing waste rubber outlet of the primary waste rubber filter is connected with a material inlet of the secondary waste rubber filter; by arranging the waste glue recycling mechanism composed of the multiple stages of waste glue filters, a large amount of good glue in waste glue can be recycled, the waste glue discharge amount in viscose spinning glue production is greatly reduced, waste discharge is reduced, and production economic benefits are improved.

Description

Technical Field

[0001] This utility model relates to the field of viscose fiber production, specifically a viscose waste adhesive treatment system. Background Technology

[0002] Viscose filtration is a crucial step in the production of viscose from regenerated cellulose fibers. Traditionally, plate and frame filters are used for viscose filtration. However, during the filtration process, the viscose leaks out of the filter under pressure, exposing it to the workshop environment and causing material waste and environmental pollution. Furthermore, using plate and frame filters requires frequent disassembly and cleaning of the filter cloth, which introduces large amounts of harmful gases into the workshop, causing significant environmental pollution. In addition, cleaning the filter cloth generates a large amount of viscose wastewater.

[0003] Currently, automatic backwashing filters are widely used in workshops to filter adhesives. Automatic backwashing filters have advantages such as good sealing and no need for frequent filter media replacement, which can significantly improve the workshop environment. However, when using automatic backwashing filters to filter adhesives, the filter screen will become clogged over time. At this time, it is necessary to use the filtered good adhesive to clean the impurities on the filter screen. A large amount of waste adhesive is generated during the filter screen cleaning process, and there is still a lot of usable good adhesive in the waste adhesive, resulting in a large amount of material waste. Utility Model Content

[0004] The purpose of this invention is to provide a glue waste treatment system that can reduce the amount of waste glue.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A waste adhesive treatment system includes a filter unit, which includes a primary filter and a waste adhesive recovery mechanism that works in conjunction with the primary filter. The primary filter has an inlet, an outlet, and a backwash waste adhesive outlet. The backwash waste adhesive outlet of the primary filter is connected to the waste adhesive recovery mechanism via a waste adhesive pipeline. The waste adhesive recovery mechanism includes a primary waste adhesive filter and a secondary waste adhesive filter. Both the primary and secondary waste adhesive filters have an inlet, an outlet, and a backwash waste adhesive outlet. The inlet of the primary waste adhesive filter is connected to the backwash waste adhesive outlet of the primary filter via a waste adhesive pipeline, and the inlet of the secondary waste adhesive filter is connected to the backwash waste adhesive outlet of the primary waste adhesive filter via a waste adhesive pipeline. The backwash waste adhesive outlet of the secondary waste adhesive filter is connected to a waste adhesive collection device via a waste adhesive pipeline.

[0007] Preferably, the primary filter, the first-stage waste adhesive filter, and the second-stage waste adhesive filter are all KK filters.

[0008] Preferably, the primary filter, the first-stage waste glue filter, and the second-stage waste glue filter are all composed of multiple KK filters connected in parallel; the backwash waste glue outlets of the multiple KK filters in the primary filter are all connected to the inlet of the first-stage waste glue filter, and the backwash waste glue outlets of the multiple KK filters in the first-stage waste glue filter are all connected to the inlet of the second-stage waste glue filter.

[0009] Preferably, the inlet of the primary filter is connected to the feed pipe via a multi-channel switching valve, and the backwash waste glue outlet of the primary filter is connected to the inlet of the first-stage waste glue filter via a multi-channel switching valve; the backwash waste glue outlet of the first-stage waste glue filter is connected to the inlet of the second-stage waste glue filter via a multi-channel switching valve.

[0010] Preferably, the number of KK filters in the secondary waste adhesive filter is not less than two, the number of KK filters in the primary waste adhesive filter is not less than three, and the number of KK filters in the primary filter is not less than the number of KK filters in the primary waste adhesive filter.

[0011] The beneficial effects of this utility model include:

[0012] This invention employs a multi-stage waste adhesive recycling mechanism to concentrate and filter the backwash waste adhesive from the primary filter. This allows for multiple concentrations of the large amount of waste adhesive generated during the backwashing process of the primary filter, and the re-filtration and separation of a large amount of good adhesive from the waste adhesive, thereby significantly reducing waste adhesive production and saving a significant amount of material resources.

[0013] Compared to traditional plate and frame filters, this invention uses KK filters to form a multi-stage filter unit, which not only significantly increases viscose spinning output, but also, because the KK filters have an automatic backwashing function, eliminates the need for manual cleaning of filter cloths and screens, greatly reducing the emission of harmful gases. It also significantly reduces the consumption of cleaning consumables such as RO water, improving the workshop working environment, effectively reducing the workload of the workshop, and improving economic efficiency.

[0014] This invention utilizes a multi-channel switching valve to connect the upper and lower stage filters, enabling alternating backwashing of the filter unit and achieving seamless glue discharge. This ensures continuous glue discharge without interruption and facilitates the design of subsequent processes and equipment development. Through a progressively decreasing multi-stage filter structure, the working efficiency of the later filters can be effectively improved, resulting in energy conservation and emission reduction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0016] Figure 2 This is a schematic diagram of the KK filter structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0018] In the diagram: 1. Inlet; 2. Outlet; 3. Waste glue outlet; 4. Tank body; 5. Filter element assembly. Detailed Implementation

[0019] Example 1

[0020] The following is a further explanation of the present invention in conjunction with specific embodiments, such as... Figure 1 As shown, this embodiment is a waste adhesive treatment system, including a primary filter and a waste adhesive recycling mechanism connected in sequence; the waste adhesive recycling mechanism includes a first-stage waste adhesive filter and a second-stage waste adhesive filter connected in sequence, and the primary filter, the first-stage waste adhesive filter and the second-stage waste adhesive filter are all composed of three KK filters connected in parallel.

[0021] like Figure 2 As shown, the KK filter is a horizontal automatic backwashing filter. The filter feeds adhesive into the inlet 1, filters the adhesive through the filter element assembly 5, and enters the tank 4. The filtered good adhesive is discharged from the outlet 2. After the filter has been filtering for a period of time, the filter element assembly 5 will gradually become clogged. At this time, the backwashing piston assembly needs to be activated to backwash the filter element assembly 5 with the pressurized good adhesive in the tank 4. The waste adhesive with impurities obtained from the backwashing is discharged through the waste adhesive outlet 3.

[0022] The waste adhesive recycling unit is used to perform multi-stage filtration and concentration on the waste adhesive discharged during the backwashing of the primary filter to recover the good adhesive and reduce waste. The backwash waste adhesive outlet of the primary filter is connected to the inlet of the primary waste adhesive filter through a waste adhesive pipeline. The waste adhesive generated by the primary filter will enter the primary waste adhesive filter for further filtration, and the good adhesive will be discharged from the outlet of the primary waste adhesive filter and thus recovered.

[0023] Since the primary waste glue filter also uses a KK filter, it can also perform automatic backwashing, discharging impurities from the filter screen through the backwash waste glue outlet. The backwash waste glue outlet of the primary waste glue filter is connected to the inlet of the secondary waste glue filter through a waste glue pipeline. The waste glue produced will then be filtered through the secondary waste glue filter, and the good glue will be discharged and recycled through the outlet. After two stages of waste glue concentration and recycling, when the secondary waste glue filter performs backwashing again, its waste glue discharge is significantly reduced compared to the backwash waste glue discharge of the primary filter, meeting the requirements for waste glue discharge.

[0024] Example 2

[0025] The difference between this embodiment and Embodiment 1 is that, as Figure 3As shown, in this embodiment, three KK filters constitute a waste glue treatment system as one filter unit. The primary filter has a total of six filter units, the first-stage waste glue filter has a total of three filter units, and the second-stage waste glue filter has a total of two filter units. The filters in the same filter unit are synchronously controlled to perform forward filtration and reverse cleaning.

[0026] A multi-channel switching valve is installed at the feed inlet of the primary filter, which is called the primary multi-channel switching valve. The primary multi-channel switching valve can switch different filter units for feeding according to the working status of each filter unit in the primary filter. When a filter unit starts backwashing, the outlet of the multi-channel switching valve connected to it is closed. When a filter unit finishes backwashing and switches to forward filtration, the outlet of the multi-channel switching valve connected to it is opened to feed it.

[0027] Each backwash waste adhesive outlet of the primary filter is connected to a first-stage multi-channel switching valve, and the outlet of the first-stage multi-channel switching valve is connected to each inlet of the primary waste adhesive filter. Similarly, the first-stage multi-channel switching valve is used to switch the operation of each filter unit in the primary waste adhesive filter, that is, to cut off the material supply to the filter entering the backwashing process and to restore the material supply to the filter entering the forward filtration process.

[0028] The backwash waste rubber outlet of the primary waste rubber filter is connected to the secondary multi-channel switching valve, and the outlet of the secondary multi-channel switching valve is connected to the inlet of the secondary waste rubber filter. Similarly, the secondary multi-channel switching valve is used to switch the operation of each filter unit in the secondary waste rubber filter, cutting off the feed to the filter entering the backwash process and restoring the feed to the filter entering the forward filtration process.

[0029] In practical use, five of the six filter units in the primary filter are in forward filtration mode, with the primary multi-channel switching valve and its five corresponding outlets all open to supply material to the five filter units in forward filtration. The other filter unit in the primary filter is in backwashing mode, with the primary multi-channel switching valve and its corresponding outlet closed. After the backwashing process is completed, the backwash filter unit is switched to forward filtration mode, and its corresponding primary multi-channel switching valve outlet is opened. At the same time, the filter unit that has been in forward filtration for the longest time is switched to backwashing mode, and its corresponding primary multi-channel switching valve outlet is closed. This process is repeated so that each filter unit can be backwashed periodically, ensuring that the primary filter always has five filter units in forward filtration mode.

[0030] The operation of the primary waste adhesive filter is similar to that of the primary filter. Two of the three filter units maintain forward filtration, while one performs a backwashing process. The filter units in the primary waste adhesive filter cycle between forward filtration and backwashing processes, ensuring that there are always two filter units performing forward filtration, thus ensuring that the primary waste adhesive filter always discharges good adhesive.

[0031] The operation of the secondary waste adhesive filter is similar to that of the first two filters. The two filter units cycle through forward filtration and reverse cleaning processes to ensure that good adhesive and waste adhesive are always discharged. Furthermore, by gradually decreasing the number of filters, the primary and secondary waste adhesive filters can always receive waste adhesive from the previous filter, avoiding the situation where the subsequent filters are idle due to lack of material supply, thus improving the working efficiency of the equipment.

[0032] Example 3

[0033] In this embodiment, the viscose waste glue treatment system of Example 1 is used to replace the traditional plate and frame filter press system, and it is tested in the raw material workshop of Xinxiang Chemical Fiber Co., Ltd.

[0034] Before replacing the filtration system, the traditional plate and frame filtration system required approximately 50 m³ of RO water per day when the viscose spinning volume in the workshop was about 200 m³ per day. In addition, the content of harmful carbon disulfide gas in the workshop was about 4-5 mg / m³, and nearly 50 m³ of viscose wastewater was generated daily.

[0035] After establishing the adhesive waste treatment system as shown in Example 1 using KK filters, the workshop's adhesive production reached 1800 m³ per day, and the content of harmful carbon disulfide gas in the workshop was reduced to 0-1 mg / m³, greatly improving the workshop environment. Furthermore, the daily RO water usage was reduced to less than 10 m³, and the adhesive wastewater was also reduced to less than 10 m³, significantly reducing the consumption and discharge of consumables such as RO water, and also reducing the workload in the workshop.

[0036] Table 1: Ratio of waste adhesive to spinning adhesive after establishing a viscose waste adhesive treatment system

[0037] date 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 Spinning amount (m3) 1814 1814 1820 1814 1814 1806 1808 1766 1776 Waste adhesive volume (m3) 11 12 11 11 10 11 10 11 10 Percentage (%) 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6

[0038] Table 1 shows the ratio of spinning amount to waste rubber amount in the No. 1 raw material workshop of Xinxiang Chemical Fiber Co., Ltd. after the replacement of the viscose waste rubber treatment system as described in Example 1 for a period of time. It can be seen that after the replacement of the viscose waste rubber treatment system as described in Example 1, the proportion of waste rubber amount in the workshop can be controlled at about 0.6%, which is much less than the traditional 5% waste rubber proportion.

[0039] The above description is merely a further explanation of the present utility model in conjunction with specific embodiments. All descriptions made do not imply any limitation on the protection scope of the present utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope of the claims.

Claims

1. A waste adhesive treatment system, comprising a filter unit, characterized in that: The filter unit includes a primary filter and a waste adhesive recovery mechanism that works in conjunction with the primary filter. The primary filter has an inlet, an outlet, and a backwash waste adhesive outlet. The backwash waste adhesive outlet of the primary filter is connected to the waste adhesive recovery mechanism via a waste adhesive pipeline. The waste adhesive recovery mechanism includes a primary waste adhesive filter and a secondary waste adhesive filter. Both the primary and secondary waste adhesive filters have an inlet, an outlet, and a backwash waste adhesive outlet. The inlet of the primary waste adhesive filter is connected to the backwash waste adhesive outlet of the primary filter via a waste adhesive pipeline, and the inlet of the secondary waste adhesive filter is connected to the backwash waste adhesive outlet of the primary waste adhesive filter via a waste adhesive pipeline. The backwash waste adhesive outlet of the secondary waste adhesive filter is connected to a waste adhesive collection device via a waste adhesive pipeline.

2. The adhesive waste treatment system according to claim 1, characterized in that: The primary filter, the first-stage waste adhesive filter, and the second-stage waste adhesive filter are all KK filters.

3. The adhesive waste treatment system according to claim 2, characterized in that: The primary filter, the first-stage waste glue filter, and the second-stage waste glue filter are all composed of multiple KK filters connected in parallel. The backwash waste glue outlets of the multiple KK filters in the primary filter are all connected to the inlet of the first-stage waste glue filter, and the backwash waste glue outlets of the multiple KK filters in the first-stage waste glue filter are all connected to the inlet of the second-stage waste glue filter.

4. The adhesive waste treatment system according to claim 3, characterized in that: The inlet of the primary filter is connected to the feed pipe via a multi-channel switching valve, and the backwash waste glue outlet of the primary filter is connected to the inlet of the first-stage waste glue filter via a multi-channel switching valve; the backwash waste glue outlet of the first-stage waste glue filter is connected to the inlet of the second-stage waste glue filter via a multi-channel switching valve.

5. The adhesive waste treatment system according to claim 4, characterized in that: The number of KK filters in the secondary waste adhesive filter shall not be less than two, and the number of KK filters in the primary waste adhesive filter shall not be less than the number of KK filters in the primary waste adhesive filter.

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