Standby liquid filtering device and liquid filtering system

Abstract

The utility model provides a spare liquid filter and a liquid filtration system, the spare liquid filter comprises a pre-filming stirring kettle and a spare filter, liquid enters the pre-filming stirring kettle through a liquid inlet of the pre-filming stirring kettle, a liquid outlet of the pre-filming stirring kettle is connected with a liquid inlet of the spare filter through a pipeline, and the spare filter is connected with the pre-filming stirring kettle through a pipeline. A liquid outlet of the standby filter is connected with a liquid inlet of the pre-filming stirring kettle through a pipeline, an adsorption material and a stirring device are arranged in the pre-filming stirring kettle, at least one layer of filter screen is arranged in the standby filter, a liquid outlet of the pre-filming stirring kettle is positioned at the bottom of the pre-filming stirring kettle, and a liquid inlet of the pre-filming stirring kettle is positioned at the top of the pre-filming stirring kettle. The standby filtering device can be immediately started when the filter stops working, so that the working efficiency is improved, and in addition, the pre-filming stirring kettle is designed, so that impurities can be prevented from being attached to the filter screen in the carbon layer building stage at the initial stage of using the standby filter while the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical production equipment technical field, concretely relates to a liquid standby filter device and liquid filter system. BACKGROUND

[0002] The refining stage of dioctyl terephthalate needs to add liquid alkali sodium hydroxide to remove monoester acid in the product, and the remaining liquid alkali and salt substances are removed by water washing, under the high load operation state of the device, the water washing process cannot completely remove the liquid alkali and salt substances, which will enter the filtering stage with the product.

[0003] In the filtering process of dioctyl terephthalate, the filter used needs to stop working and shake off the carbon residue on its filter screen under the long-time high load operation state, thus the overall work efficiency is reduced. In the prior art, a standby coarse filter is simply used, but when the liquid alkali and salt substances enter the coarse filter with the product, they will adhere to the filter screen, reducing the filtering capacity. Therefore, the prior art needs to be further developed. SUMMARY

[0004] The utility model provides a liquid standby filter device and liquid filter system, and the specific implementation manner is as follows:

[0005] A liquid standby filter device, comprising a pre-membrane stirred tank and a standby filter, liquid enters the pre-membrane stirred tank through the liquid inlet of the pre-membrane stirred tank, the liquid outlet of the pre-membrane stirred tank is connected with the liquid inlet of the standby filter through a pipeline, the liquid outlet of the standby filter is connected with the liquid inlet of the pre-membrane stirred tank through a pipeline, adsorbent material and a stirring device are placed in the pre-membrane stirred tank, at least one layer of filter screen is arranged in the standby filter, the liquid outlet of the pre-membrane stirred tank is located at the bottom of the pre-membrane stirred tank, and the liquid inlet of the pre-membrane stirred tank is located at the top of the pre-membrane stirred tank.

[0006] Further, the liquid inlet of the standby filter is located at the bottom of the standby filter, and the liquid outlet of the standby filter is also located at the bottom of the standby filter.

[0007] Further, an exhaust hole is arranged at the top of the standby filter, and the exhaust hole is connected with the liquid inlet of the pre-membrane stirred tank through an exhaust pipeline.

[0008] Further, activated carbon and diatomite are placed in the pre-membrane stirred tank.

[0009] Further, a plurality of layers of filter screens are arranged in the standby filter, and the plurality of layers of filter screens are arranged at intervals from the top to the bottom of the standby filter.

[0010] Further, a circulating pump is arranged on the pipeline between the liquid outlet of the pre-membrane stirred tank and the liquid inlet of the standby filter.

[0011] In addition, the application further provides a liquid filtering system, comprising a filter, a liquid outlet of the filter being connected with two parallel branches, a liquid collecting device and the above-mentioned liquid standby filtering device being arranged on the two parallel branches respectively, a first valve being arranged on the parallel branch between the liquid outlet of the filter and the liquid collecting device, a second valve being arranged on the parallel branch between the liquid outlet of the filter and the liquid standby filtering device, when the filter works normally, the first valve is opened and the second valve is closed, when the filter stops working, the second valve is opened and the first valve is closed.

[0012] Further, the liquid outlet of the standby filter is communicated with the liquid inlet of the liquid collecting device through a pipeline.

[0013] Beneficial effects:

[0014] 1. The standby filtering device of the utility model can be started immediately when the filter stops working, thereby improving work efficiency.

[0015] 2. In addition, the utility model discloses a pre-membrane stirring kettle, which can prevent impurities from adhering to the filter screen during the initial carbon layer establishment stage of the standby filter.

[0016] 3. The application combines the filter and the liquid standby filtering device, and the obtained liquid filtering system is simple and convenient and prolongs the working cycle. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of a liquid filtering system of the utility model;

[0018] Figure 2 is a structural schematic view of a liquid standby filtering device of the utility model.

[0019] Among them, the above-mentioned drawings comprise the following drawing marks:

[0020] 1, pre-membrane stirring kettle; 11, liquid inlet of pre-membrane stirring kettle; 12, liquid outlet of pre-membrane stirring kettle; 13, stirring device; 14, adsorption material; 2, standby filter; 21, liquid inlet of standby filter; 22, liquid outlet of standby filter; 23, filter screen; 24, exhaust hole; 3, circulating pump; 4, liquid inlet of filter; 5, filter; 51, liquid outlet of filter; 61, first valve; 62, second valve; 63, third valve; 64, fourth valve; 7, liquid collecting device. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model will be described below in combination with the drawings and examples:

[0022] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0023] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0024] According to an embodiment of this utility model, a liquid backup filtration device is provided, such as... Figure 2 As shown, the system includes a pre-filming stirred tank 1 and a backup filter 2. Liquid enters the pre-filming stirred tank 1 through its inlet 11. The outlet 12 of the pre-filming stirred tank is connected to the inlet 21 of the backup filter via a pipeline. The outlet 22 of the backup filter is connected to the inlet 11 of the pre-filming stirred tank via a pipeline. The pre-filming stirred tank 1 contains adsorbent material 14 and a stirring device 13. The backup filter 2 contains at least one layer of filter screen 23. The outlet 12 of the pre-filming stirred tank is located at the bottom of the pre-filming stirred tank 1, and the inlet 11 of the pre-filming stirred tank is located at the top of the pre-filming stirred tank 1. Specifically, the backup filter 2 includes a housing and a filter screen 23 disposed within the housing. A pre-film mixing tank 1 is installed upstream of the backup filter 2. Before entering the backup filter 2, the material first enters the pre-film mixing tank 1 to mix with the adsorbent material 14. The mixed material then enters the backup filter 2 for filtration, establishing a carbon layer on the filter screen 23. By circulating between the pre-film mixing tank 1 and the backup filter 2, the carbon layer is established. Then, the feed to the backup filter 2 is switched to the formal feed process for operation. This application designs a pre-film mixing tank 1, which improves working efficiency while preventing impurities from adhering to the filter screen 23 during the initial carbon layer establishment stage of the backup filter 2.

[0025] The liquid inlet 21 of the standby filter is located at the bottom of the standby filter 2, and the liquid outlet 22 of the standby filter is also located at the bottom of the standby filter 2. The liquid inlet 21 of the standby filter is located at the bottom of the standby filter 2, so that the gas in the standby filter can be exhausted at the beginning of the feeding. Further, the top of the standby filter 2 is provided with an exhaust hole 24. When the liquid material enters from the bottom, the gas in the standby filter 2 moves to the top of the standby filter 2 and is discharged through the exhaust hole 24. The exhaust hole 24 is connected with the liquid inlet 11 of the pre-membrane stirred tank through an exhaust pipeline, and the exhaust pipeline transports the gas discharged from the exhaust hole.

[0026] The pre-membrane stirred tank 1 is internally provided with activated carbon and diatomite. The material first enters the pre-membrane stirred tank 1 and is mixed with the adsorbent material 14, which is activated carbon and diatomite. Both the activated carbon and the diatomite are porous adsorbent materials, and the impurities in the liquid material can be adsorbed in the pores of the adsorbent material 14, thereby avoiding the impurities from adhering to the filter screen 23. Specifically, the mass ratio of the activated carbon to the diatomite is 1: (1-2).

[0027] The standby filter 2 is internally provided with multiple layers of filter screens 23, and the multiple layers of filter screens 23 are arranged at intervals from the top to the bottom of the standby filter 2. The multiple layers of filter screens 23 in the standby filter 2 respectively establish carbon layers during the circulation of the material, and the filtering effect is further improved.

[0028] A circulation pump 3 is arranged on the pipeline between the liquid outlet 12 of the pre-membrane stirred tank and the liquid inlet 21 of the standby filter. When the circulation pump 3 is turned on, the material is circulated between the pre-membrane stirred tank 1 and the standby filter 2, and the filter screens 23 gradually establish carbon layers.

[0029] The application also provides a liquid filtering system, which comprises the pre-membrane stirred tank and the standby filter. Figure 1As shown, the filter 5 is connected with two parallel branches, liquid collecting device 7 and the above-mentioned liquid standby filter device are arranged on the two parallel branches respectively, a first valve 61 is arranged on the parallel branch between the liquid outlet 51 of the filter and the liquid collecting device 7, a second valve 62 is arranged on the parallel branch between the liquid outlet 51 of the filter and the liquid standby filter device, when the filter 5 works normally, the first valve 61 is opened, and the second valve 62 is closed, when the filter 5 stops working, the second valve 62 is opened, and the first valve 61 is closed. Specifically, when the filter 5 works normally, the material enters the filter 5 from the liquid inlet 4 of the filter, and is directly collected after being filtered by the filter 5, but when the filter 5 filters for a long time, the filter screen in the filter 5 needs to be cleaned to remove the carbon residue on the filter screen, at this time, the filter 5 needs to stop working, before the filter 5 stops working, the standby filter device is opened by adjusting the first valve 61 and the second valve 62, the initial standby filter only has the filter screen 23, impurities are easy to adhere to the filter screen 23, in order to prevent impurities from adhering to the filter screen 23, the pre-membrane stirred tank 1 is arranged, the material is circulated between the pre-membrane stirred tank 1 and the standby filter 2 for many times, the activated carbon and diatomite adhere to the filter screen 23, and the carbon layer is gradually formed on the filter screen 23 of the standby filter 2.

[0030] The liquid outlet 22 of the standby filter is communicated with the liquid inlet of the liquid collecting device 7 through a pipeline. Specifically, a third valve 63 is arranged on the pipeline between the liquid outlet 22 of the standby filter and the liquid inlet 11 of the pre-membrane stirred tank, and a pipeline is also arranged between the liquid outlet 22 of the standby filter and the liquid collecting device 7, and a fourth valve 64 is arranged on the pipeline, after the carbon layer is formed, the standby filter 2 can be put into use as a formal filter, at this time, the third valve 63 is closed, and the fourth valve 64 is opened, the material can be directly collected after being filtered by the standby filter 2, and finally collected to the liquid collecting device 7.

[0031] Many other changes and modifications can be made to the present application without departing from the spirit and scope of the application. It should be understood that the present application is not limited to the particular embodiments described herein, but includes all embodiments falling within the scope of the appended claims.

Claims

1. A liquid back-up filter device, characterized in that, The application relates to a liquid standby filter device, which comprises a pre-membrane stirred tank and a standby filter, a liquid inlet of the pre-membrane stirred tank is connected with a liquid inlet of the standby filter through a pipeline, a liquid outlet of the standby filter is connected with a liquid inlet of the pre-membrane stirred tank through a pipeline, the pre-membrane stirred tank is internally provided with adsorbing material and a stirring device, the standby filter is internally provided with at least one layer of filter screen, the liquid outlet of the pre-membrane stirred tank is located at the bottom of the pre-membrane stirred tank, and the liquid inlet of the pre-membrane stirred tank is located at the top of the pre-membrane stirred tank.

2. The liquid reserve filter device of claim 1, wherein, The liquid inlet of the standby filter is located at the bottom of the standby filter, and the liquid outlet of the standby filter is also located at the bottom of the standby filter.

3. The liquid reserve filter apparatus of claim 1, wherein, An exhaust hole is arranged at the top of the standby filter, and the exhaust hole is connected with the liquid inlet of the pre-membrane stirred tank through an exhaust pipeline.

4. The liquid reserve filter apparatus of claim 1, wherein, The pre-membrane stirred tank is internally provided with activated carbon and diatomite.

5. The liquid reserve filter apparatus of claim 1, wherein, The standby filter is internally provided with multiple layers of filter screens, and the multiple layers of filter screens are arranged at intervals from the top to the bottom of the standby filter.

6. The liquid reserve filter apparatus of claim 1, wherein, A circulating pump is arranged on the pipeline between the liquid outlet of the pre-membrane stirred tank and the liquid inlet of the standby filter.

7. A liquid filtration system characterized by, The application further relates to a liquid standby filter device, which comprises a filter, a liquid outlet of the filter is connected with two parallel branches, liquid collecting devices and the liquid standby filter devices of any one of claims 1-6 are arranged on the two parallel branches respectively, a first valve is arranged on the parallel branch between the liquid outlet of the filter and the liquid collecting devices, a second valve is arranged on the parallel branch between the liquid outlet of the filter and the liquid standby filter devices, when the filter normally works, the first valve is opened, and the second valve is closed; when the filter stops working, the second valve is opened, and the first valve is closed.

8. The liquid filtration system of claim 7, wherein, The liquid outlet of the standby filter is connected with the liquid inlet of the liquid collecting device through a pipeline.

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