Synthetic decoloration kettle filtering device for decoloration of zinc glycinate

Abstract

The utility model discloses a synthetic decolorization kettle filtering device for a zinc glycinate decolorization process, and belongs to the field of chemical production equipment, the device comprises an annular fixed base, a top filter screen and a bottom filter unit which are coaxially assembled in the base, and a primary pretreatment unit arranged at the top, wherein the top filter screen and the bottom filter unit are matched in the annular fixed base to form a split type filter cavity, filter mode switching is achieved based on fluid pressure changes, and the peripheral edge of the top filter screen is fixed to the inner wall of the annular fixed base; the net surface is of a centripetal inclined structure, and a pressure response type elastic valve body is mounted at the geometric center of the net surface. And the elastic valve is matched with a sealed filter cavity arranged between the upper filter screen and the inner filter screen. According to the filtering device, continuous and efficient filtering is realized through a hierarchical filtering structure and a pressure feedback mechanism, and meanwhile, a self-cleaning function is integrated to deal with the problem of medium blockage.

Description

TECHNICAL FIELD

[0001] The application relates to the field of chemical production equipment, in particular to a synthetic decolorization kettle filtering device for zinc glycinate decolorization. BACKGROUND

[0002] Zinc glycinate is an important amino acid chelate, which is widely used in food additives, pharmaceutical intermediates and agricultural fields. The decolorization process is crucial in its production. At present, the commonly used decolorization equipment in industry is mostly traditional reaction kettles combined with static filtering devices, such as single-layer screen filtration or separation through filter cloth after activated carbon adsorption. These technologies can remove pigments and impurities in the solution to some extent, ensuring the appearance and purity of the product. The equipment structure is usually simple, easy to operate, and the cost is relatively controllable, so it has been widely used in small and medium-sized production.

[0003] However, the existing technology gradually exposes some deficiencies that cannot be ignored in actual use. First of all, the traditional single-layer static filtering system is prone to clogging, especially when dealing with zinc glycinate solution containing high impurities or having high viscosity, the surface of the screen or filter cloth will be quickly covered with particulate matter, resulting in a rapid decline in filtration efficiency. The reason for this problem is that the filtering layer lacks a dynamic cleaning mechanism, and the impurities accumulate in a fixed position during gravity settling. On the other hand, the filtration process relies too much on a single filtration medium, and lacks subsequent fine processing steps. Secondly, the existing device shows unstable clarity of the solution after decolorization, sometimes small particles or residual pigments are difficult to completely remove, which is closely related to the lack of filtration precision and the lack of cycle optimization design. These deficiencies not only prolong the production cycle, but also may increase the frequency of manual cleaning, and even affect the final quality of zinc glycinate, bringing potential risks to downstream applications.

[0004] In view of the above problems, it is particularly necessary to develop an improved decolorization kettle filtering device. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to at least overcome one deficiency of the prior art, and to provide a synthetic decolorization kettle filtering device for zinc glycinate decolorization. The device realizes continuous and efficient filtration through a hierarchical filtering structure and a pressure feedback mechanism, and integrates a self-cleaning function to deal with the medium clogging problem.

[0006] To achieve the above-mentioned purpose, the application discloses a synthetic decolorization kettle filtering device for zinc glycinate decolorization process, which comprises an annular fixed base, a top filter screen and a bottom filter unit coaxially assembled in the base, and a primary pretreatment unit arranged at the top, wherein the top filter screen and the bottom filter unit cooperate to form a split filter cavity in the annular fixed base, and realize filtration mode switching based on fluid pressure change.

[0007] Specifically, the outer peripheral edge of the top filter screen is fixed to the inner wall of the annular fixed base, the screen surface is in a centripetal inclined structure, and a pressure-responsive elastic valve body is installed at the geometric center. The bottom filter unit is composed of a coaxially nested outer ring frame and an inner filter screen, the outer ring frame is rigidly connected with the fixed base, and the inner filter screen is assembled in the outer ring frame through a detachable structure, and the two together form a planar disc-shaped composite filter layer. The top filter screen and the bottom filter unit form a closed main filter chamber through an annular sealing structure, and the chamber is communicated with the area where the inner filter screen is located through the elastic valve body; at the same time, the inclined screen surface of the top filter screen and the upper end surface of the outer ring frame form an annular flow guide cavity, and the flow guide cavity is communicated with a plurality of flow guide holes opened in the circumferential direction of the outer ring frame.

[0008] Further, the outer edge region of the top filter screen is integrated with an annular piezoelectric actuation module, which is made of piezoelectric ceramic material and is electrically connected with a high-frequency power supply control system, and can generate axial high-frequency vibration to strip the deposits on the screen surface.

[0009] When the top filter screen is blocked and the pressure in the main filter chamber exceeds the threshold value, the elastic valve body is opened under the action of fluid pressure, so that the material flows to the inner filter screen for filtering through the main filter chamber; at the same time, the piezoelectric actuation module activates the high-frequency vibration mode according to the pressure signal, and synchronously removes the surface deposits of the top filter screen.

[0010] Further, the inner filter screen is assembled in the outer ring frame through a detachable structure.

[0011] Compared with the prior art, the device ensures the continuous operation reliability and stability of the filtering efficiency under complex working conditions through the dynamic switching of the two-stage filtering structure and the synergistic effect of the vibration cleaning.

[0012] The above listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0013] The specific embodiments will be better understood after reading the following detailed description in conjunction with the accompanying drawings, in which the position, size, and range, etc. of each structure shown in the drawings are sometimes not represented as actual position, size, and range, etc. In the drawings:

[0014] Fig. 1 is a structural schematic diagram of an embodiment of the present application.

[0015] Fig. 2 is a structural schematic diagram of the top filter screen in an embodiment of the present application.

[0016] Fig. 3This is a schematic diagram of the structure of a bottom filter unit disclosed in this application. Detailed Implementation

[0017] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0018] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0019] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0020] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0021] See attached document Figs. 1 to 3 This embodiment discloses a filtration device for a synthesis decolorization reactor in a zinc glycinate decolorization process, aiming to provide a highly efficient, intelligent, and easy-to-maintain filtration solution to meet the stringent purity requirements of the solution during zinc glycinate production. The device features a compact overall structure and tight connections between components, achieving a perfect balance between filtration efficiency and stability.

[0022] The device mainly comprises a ring-shaped fixed base 1, a top filter screen 2 and a bottom filter unit 4 coaxially assembled in the base, and a primary pretreatment unit 3 arranged at the top. The ring-shaped fixed base 1 serves as the basic support structure of the entire device, is made of high-strength stainless steel material, and has its dimensional accuracy and mechanical strength ensured through precise machining process, so as to be able to withstand fluid pressure and chemical corrosion in the zinc glycinate decolorization process. The inner wall thereof is subjected to high-precision surface treatment, thereby providing accurate positioning and stable support for the assembly of the top filter screen 2 and the bottom filter unit.

[0023] The outer peripheral edge of the top filter screen 2 is fixed to the inner wall of the ring-shaped fixed base 1, and advanced processes such as laser welding are adopted to ensure the firmness and sealing of the connection. The screen surface has a centripetal inclined structure, which can increase the area of the screen surface and also ensure that the material can flow smoothly along the screen surface to the pressure-responsive elastic valve body 5 at the geometric center when the top filter screen 2 is blocked. The pressure-responsive elastic valve body 5 has good elasticity and sealing performance, and can be automatically opened or closed under the action of fluid pressure, thereby realizing intelligent switching of the filtering mode.

[0024] The bottom filter unit 4 is composed of a coaxially nested outer ring frame 401 and an embedded filter screen 402. The outer ring frame 401 is rigidly connected with the ring-shaped fixed base 1, and high-strength bolt connection or other connection modes are adopted to ensure that the outer ring frame 401 can withstand fluid pressure without deformation or loosening during the filtering process. The embedded filter screen 402 is assembled inside the outer ring frame 401 through a detachable structure, which can be a buckle connection, a threaded connection or other connection modes known to those skilled in the art, thereby facilitating the periodic replacement and maintenance of the embedded filter screen. The two together form a planar disc-shaped composite filter layer, and the material and precision of the filter layer are selected according to the specific requirements of the zinc glycinate decolorization process, such as ceramic filter membrane and titanium alloy filter screen, so as to meet the filtering requirements of different particle sizes of impurities in the solution.

[0025] The top filter screen 2 and the bottom filter unit 4 form a closed main filter chamber 7 through a ring-shaped sealing structure 6, and the chamber is in communication with the area where the embedded filter screen 402 is located through the elastic valve body 5.

[0026] Meanwhile, the inclined screen surface of the top filter screen 2 and the upper end surface of the outer ring frame form a ring-shaped flow guide cavity 8, and the flow guide cavity 8 is in communication with a plurality of flow guide holes 403 circumferentially arranged on the outer ring frame 401.

[0027] Further, the outer edge region of the top filter screen 2 is integrated with a ring-shaped piezoelectric actuation module 9 made of piezoelectric ceramic material and electrically connected with a high-frequency power control system. The piezoelectric ceramic material has good piezoelectric properties and mechanical strength, and can generate high-strength axial vibration under the drive of the high-frequency power control system, effectively removing the impurity particles accumulated on the surface of the top filter screen 2 due to long-term filtration, preventing the filter screen from being blocked, and maintaining the stability of the filtration performance. The connection mode adopts the electrical connection technology well known to those skilled in the art, ensuring the stability and reliability of signal transmission.

[0028] In actual application, taking the zinc glycine decolorization process as an example, when the zinc glycine solution containing pigments and impurities enters the synthesis decolorization kettle, it is first subjected to preliminary filtration and adsorption by the top primary pretreatment unit 3 to remove large-particle impurities and part of the pigments. The specific structure and filtration principle of the primary pretreatment unit 3 are well known to those skilled in the art, and will not be described here.

[0029] Then, the solution flows into the split-type filtration cavity formed by the top filter screen 2 and the bottom filter unit 4 under the action of gravity. In the normal filtration mode, the solution is subjected to preliminary filtration by the top filter screen 2, which intercepts large-particle impurity particles, and the filtered liquid is sent out through the annular flow guide cavity 8 and the flow guide hole 403.

[0030] When the pressure of the elastic valve body 5 rises to a certain threshold value due to the blockage of the top filter screen 2, the elastic valve body 5 automatically opens, and all or part of the solution directly flows into the built-in filter screen 402 for filtration, while the piezoelectric actuation module 9 starts high-frequency vibration to remove the accumulations on the surface of the top filter screen 2 and restore its filtration performance. The filtered zinc glycine solution is clear and transparent, and the impurity content is greatly reduced, meeting the requirements of the subsequent production process for solution purity.

[0031] Compared with the traditional single filtration mode, the synthesis decolorization kettle filtration device in the present embodiment realizes the intelligentization and high efficiency of the filtration process through the design of the split-type filtration cavity and the pressure-responsive automatic switching mechanism. While ensuring the filtration effect, the service life of the filtration components is effectively prolonged, the production cost is reduced, and the production efficiency is improved. Especially in the zinc glycine decolorization process, the device can significantly improve the purity and quality of the product, and has good application prospect and economic benefit.

[0032] Although exemplary embodiments of the present disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A synthetic decolorization kettle filtration device for zinc glycinate decolorization, characterized in that, The device comprises a ring-shaped fixed base, a top filter screen and a bottom filter unit coaxially assembled in the base, and a primary pretreatment unit arranged at the top, wherein the top filter screen and the bottom filter unit cooperate to form a split filter cavity in the ring-shaped fixed base, and realize filter mode switching based on fluid pressure change; the outer peripheral edge of the top filter screen is fixed to the inner wall of the ring-shaped fixed base, the screen surface is in a centripetal inclined structure, and a pressure-responsive elastic valve body is installed at the geometric center; the bottom filter unit is composed of a coaxially nested outer ring frame and an embedded filter screen, the outer ring frame is rigidly connected with the fixed base, and the embedded filter screen is assembled in the outer ring frame through a detachable structure, and the two together form a planar disc-shaped composite filter layer; the top filter screen and the bottom filter unit form a closed main filter chamber through a ring-shaped sealing structure, the chamber is communicated with the area where the embedded filter screen is located through the elastic valve body; at the same time, the inclined screen surface of the top filter screen and the upper end surface of the outer ring frame form a ring-shaped flow guide cavity, and the flow guide cavity is communicated with a plurality of flow guide holes opened in the circumferential direction of the outer ring frame.

2. A synthetic decolorizing kettle filter device for decolorizing zinc glycinate as claimed in claim 1, characterized in that, An annular piezoelectric actuation module is integrated in the outer edge area of the top filter screen, the module is made of piezoelectric ceramic material and is electrically connected with a high-frequency power control system, and can generate axial high-frequency vibration to strip the deposits on the screen surface.

3. A synthetic decolorizing kettle filter device for decolorizing zinc glycinate as claimed in claim 1, wherein, The embedded filter screen is assembled in the outer ring frame through a detachable structure.

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