CN223464479U - Plate-frame filter for stevioside production - Google Patents

Abstract

The utility model provides a plate-frame filter for stevioside production, which belongs to the field of food processing and comprises a shell and an automatic protection component, wherein the automatic protection component is arranged in the shell and comprises an air cylinder, a telescopic pipe, a fixed block, a baffle, a limiting groove, a fixing frame, a supporting frame and a metal filtering cover, the air cylinder is fixedly arranged at the inner wall of the supporting frame, one end of the telescopic pipe is fixedly arranged at the output end of the air cylinder, the other end of the telescopic pipe is fixedly arranged at the outer wall of the fixed block, the fixed block is fixedly arranged at the top of the outer wall of the baffle, the baffle is in sliding connection with the outer wall of the fixing frame, and the limiting groove is formed in the outer wall of the fixing frame. Through automatic protection component, can descend the baffle and protect the filtration membrane on the mount that will filter the stevioside to when preventing to clean, avoid having the rivers of certain impact force to damage filtration membrane, in time clean metal filter cover, can avoid appearing cross contamination's condition, guarantee filterable efficiency.

Description

Plate-frame filter for stevioside production

Technical Field

The utility model belongs to the field of food processing, and particularly relates to a plate and frame filter for stevioside production.

Background

The plate-frame filter mainly comprises a plurality of filter plates and filter frames which are alternately arranged. The filter plates and frames are generally square, and the surfaces of the filter plates are provided with filter cloths or screens for filtering stevioside solutions. The filter frame is used for supporting the filter cloth and forming a filter space. Sealing devices, such as rubber sealing rings, are arranged at the edges of the filter plate and the filter frame to ensure that stevioside solution cannot leak in the filtering process. It also has a feed inlet, a discharge outlet and a slag discharge outlet. The feed inlet is used for introducing stevioside solution into the filtering unit, and the solution enters a space between the filtering frame and the filtering plate under the action of pressure. The filtered stevioside liquid flows out from the discharge port through the filter cloth, and the solid impurities are trapped in the filter frame and can be discharged through the slag discharge port after the filtration is completed. When the solution in the stevioside production process enters the plate and frame filter, the solution is forced through the filter cloth by pressure (typically provided by a pump). The solid impurity particles in the stevioside are larger and can not pass through the pores of the filter cloth to be blocked in the filter frame, and the effective components of the stevioside are dissolved in the solution and can smoothly pass through the filter cloth, thereby realizing solid-liquid separation. With the progress of filtration, the solid impurities in the filter frame are gradually increased, and the filtration resistance is also gradually increased. When the resistance reaches a certain degree, the filtering speed can be obviously reduced, and then the filtering is stopped, the operations of deslagging, filtering cloth cleaning and the like are performed, and the filtering is continued. High-efficiency filtration, namely, the stevioside solution can be quickly and effectively filtered, impurities in the stevioside solution can be separated, and the purity of the stevioside product can be improved. The filter area of the plate-frame filter can be adjusted according to the production scale.

The plate-and-frame filter for stevioside production has the defect that the filtering resistance can be gradually increased along with the continuous accumulation of filter residues in the filtering process because the plate-and-frame filter is intermittent filtering equipment. When the resistance reaches a certain degree, the filtration speed can be obviously reduced, and the operations of deslagging, cleaning and the like need to be stopped. This makes the whole filtration process discontinuous, and the amount of stevioside solution that can be treated in the same time is relatively small compared to some continuous filtration apparatuses, thereby affecting the production efficiency. The filtering speed is limited, and the filtering speed mainly depends on factors such as pressure difference, porosity of filter cloth, viscosity of stevioside solution and the like. In actual production, even under higher pressure, the filtration speed still cannot meet the requirement of mass and high-efficiency stevioside production due to the limited filtration area of the filter cloth (although the area can be increased by increasing the number of plate frames, the size of equipment is limited, etc.). And the cross contamination is easy to occur because the cleaning is not thorough if the production batch is required to be replaced or different types of stevioside solutions are filtered in the production process. For example, the remaining impurities of the previous batch may be mixed into the steviol solution of the next batch, thereby affecting the purity and quality of the product.

Disclosure of utility model

The utility model aims to provide a plate-and-frame filter for stevioside production, and aims to solve the problems set forth in the background technology.

A plate-frame filter for stevioside production, which comprises,

A housing;

The automatic protection assembly is arranged at the inner part of the shell and comprises a cylinder, a telescopic pipe, a fixed block, a baffle, a limit groove, a fixing frame, a supporting frame and a metal filtering cover, wherein the cylinder is fixedly arranged at the inner wall of the supporting frame, one end of the telescopic pipe is fixedly arranged at the output end of the cylinder, the other end of the telescopic pipe is fixedly arranged at the outer wall of the fixed block, the fixed block is fixedly arranged at the top of the outer wall of the baffle, the baffle is slidably connected at the outer wall of the fixing frame, the limit groove is formed in the outer wall of the fixing frame, the fixing frame is fixedly arranged at the bottom of the inner wall of the shell, the filtering film is embedded in the inner wall of the fixing frame, the supporting frame is fixedly arranged at the outer wall of the shell, and the metal filtering cover is fixedly arranged at the inner wall of the shell.

Further, a feeding pipe is fixedly arranged on one side of the outer wall of the shell, a discharging pipe is fixedly arranged on the other side of the outer wall of the shell, and a sewage draining pipe is fixedly arranged on the outer wall of the feeding pipe.

Further, the inner wall top of support frame is fixed and is provided with the water tank, the outer wall bottom of water tank is fixed and is provided with the delivery pipe, the delivery pipe is fixed to be set up in the outer wall top department of shell.

Further, filter cotton is fixedly arranged in the shell.

Further, the filter cotton is made of PP cotton.

Further, the metal filter cover is matched with the fixing frame.

Compared with the prior art, the utility model has the beneficial effects that:

Through automatic protection component, can descend the baffle and protect the filtration membrane on the mount that will filter the stevioside to when preventing to clean, avoid having the rivers of certain impact force to damage filtration membrane, in time clean metal filter cover, can avoid appearing cross contamination's condition, guarantee filterable efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a partial perspective view of the present utility model;

FIG. 3 is a perspective view of the tapping pipe of the present utility model.

In the figure, 1, a shell; 2, an air cylinder, 3, a telescopic pipe, 4, a fixed block, 5, a baffle, 6, a limit groove, 7, a fixed frame, 8, a blow-down pipe, 9, a supporting frame, 10, a water tank, 11, a water supply pipe, 12, a feed pipe, 13, filter cotton, 14, a metal filter cover, 15 and a discharge pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," configured to, "" engaged with, "" connected to, "and the like are to be construed broadly, and include, for example," connected to, "whether fixedly connected to," detachably connected to, "integrally connected to," mechanically connected to, "electrically connected to," directly connected to, indirectly connected to, and in communication with each other via an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, the technical scheme provided by the present embodiment is as follows:

A plate-frame filter for stevioside production, which comprises,

A housing 1;

The automatic protection component is arranged at the inner part of the shell 1 and comprises a cylinder 2, a telescopic pipe 3, a fixed block 4, a baffle 5, a limiting groove 6, a fixing frame 7, a supporting frame 9 and a metal filtering cover 14, wherein the cylinder 2 is fixedly arranged at the inner wall of the supporting frame 9, one end of the telescopic pipe 3 is fixedly arranged at the output end of the cylinder 2, the other end of the telescopic pipe 3 is fixedly arranged at the outer wall of the fixed block 4, the fixed block 4 is fixedly arranged at the top of the outer wall of the baffle 5, the baffle 5 is slidably connected at the outer wall of the fixing frame 7, the limiting groove 6 is arranged at the outer wall of the fixing frame 7, the fixing frame 7 is fixedly arranged at the bottom of the inner wall of the shell 1, a filtering membrane is embedded in the inner wall of the fixing frame 7, the supporting frame 9 is fixedly arranged at the outer wall of the shell 1, and the metal filtering cover 14 is fixedly arranged at the inner wall of the shell 1.

In the specific embodiment of the utility model, the filtering membrane on the fixing frame 7 for filtering the stevioside can be protected by the descending baffle 5 through the automatic protection component, so that the filtering membrane is prevented from being damaged by water flow with a certain impact force when the stevioside is cleaned, the metal filtering cover 14 can be cleaned in time, the cross contamination condition can be avoided, the filtering efficiency is ensured, firstly, when solution in the stevioside production process enters the plate frame filter through the feeding pipe 12, under the driving of pressure, the solution passes through the filtering cotton 13 and the metal filtering cover 14 to reach the filtering membrane, solid impurity particles in the stevioside are larger and cannot pass through the pores of the filtering cotton 13 and the metal filtering cover 14, the stevioside is blocked in the metal filtering cover 14, the stevioside can be discharged from the discharging pipe 15 after passing through the filtering membrane, when the solid impurities in the filtering frame are gradually increased, the filtering membrane can be protected by descending the baffle 5 through the air cylinder 2, then the solid impurities on the metal filtering cover 14 can be washed through the water supply pipes 11 in two directions, and finally the solid impurities on the metal filtering cover 14 can be discharged out of the filter through the drain pipes 8 at two sides.

Specifically, a feeding pipe 12 is fixedly arranged on one side of the outer wall of the shell 1, a discharging pipe 15 is fixedly arranged on the other side of the outer wall of the shell 1, and a sewage discharge pipe 8 is fixedly arranged on the outer wall of the feeding pipe 12.

In the specific embodiment of the utility model, the solution in the stevioside production process enters the plate-and-frame filter through the feed pipe 12, the filtered stevioside is discharged from the discharge pipe 15, the solid impurities on the metal filter cover 14 are washed, and the filtered stevioside can be discharged out of the filter through the drain pipes 8 on two sides.

Specifically, the water tank 10 is fixedly arranged at the top of the inner wall of the supporting frame 9, the water supply pipe 11 is fixedly arranged at the bottom of the outer wall of the water tank 10, and the water supply pipe 11 is fixedly arranged at the top of the outer wall of the shell 1.

In an embodiment of the present utility model, the solid impurities on the metal filter cover 14 can be washed through the two-directional water supply pipe 11.

Specifically, the filter cotton 13 is fixedly arranged in the casing 1.

In an embodiment of the utility model, the solution is passed through filter cotton 13 to filter out larger particulate impurities in the stevioside.

Specifically, the filter cotton 13 is PP cotton as a constituent material.

In a specific embodiment of the utility model, the PP cotton can pass through the stevioside solution, which helps to improve the purity of the stevioside product.

Specifically, the metal filter cover 14 is matched with the fixing frame 7.

In a specific embodiment of the utility model, stability and tightness in the filter state are ensured.

Working principle:

Through automatic protection component, can descend baffle 5 to protect the filtration membrane on the mount 7 of filtering the stevioside, in order to prevent when clean, avoid having the rivers of certain impact force to damage the filtration membrane, in time clean metal filter cap 14, can avoid appearing cross contamination's condition, guarantee filterable efficiency, firstly, when solution in the stevioside production process gets into the plate frame filter through inlet pipe 12, under the drive of pressure, solution is through filter cotton 13 and metal filter cap 14, reach the filtration membrane, solid impurity granule in the stevioside is great, can't be through filter cotton 13 and metal filter cap 14's hole, be blocked in metal filter cap 14, behind the filter membrane, the stevioside can follow discharging pipe 15 and discharge, solid impurity in the filter frame gradually increases, can descend baffle 5 through cylinder 2, protect the filtration membrane, then through the delivery pipe 11 of two directions, can wash the solid impurity on the metal filter cap 14, finally discharge the filter through blow off pipe 8 of both sides.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A plate-and-frame filter for stevia production, comprising: Housing (1); An automatic protection component is arranged inside a housing (1), wherein: the automatic protection component comprises a cylinder (2), a telescopic tube (3), a fixed block (4), a baffle (5), a limiting groove (6), a fixing frame (7), a support frame (9) and a metal filter cover (14); the cylinder (2) is fixedly arranged on the inner wall of the support frame (9); one end of the telescopic tube (3) is fixedly arranged at the output end of the cylinder (2); the other end of the telescopic tube (3) is fixedly arranged on the outer wall of the fixing block (4); The fixing block (4) is fixedly arranged at the top of the outer wall of the baffle (5), the baffle (5) is slidably connected to the outer wall of the fixing frame (7), the limiting groove (6) is opened on the outer wall of the fixing frame (7), the fixing frame (7) is fixedly arranged at the bottom of the inner wall of the shell (1), the inner wall of the fixing frame (7) is embedded with a filter membrane, the support frame (9) is fixedly arranged at the outer wall of the shell (1), and the metal filter cover (14) is fixedly arranged at the inner wall of the shell (1). 2. A plate and frame filter for stevia production according to claim 1, characterized in that a feed pipe (12) is fixedly provided on one side of the outer wall of the shell (1), and a discharge pipe (15) is fixedly provided on the other side of the outer wall of the shell (1); and a sewage pipe (8) is fixedly provided on the outer wall of the feed pipe (12). 3. A plate and frame filter for stevia production according to claim 2, characterized in that a water tank (10) is fixedly provided on the top of the inner wall of the support frame (9), a water supply pipe (11) is fixedly provided on the bottom of the outer wall of the water tank (10), and the water supply pipe (11) is fixedly provided at the top of the outer wall of the outer shell (1). 4. A plate-and-frame filter for stevia production according to claim 3, characterized in that filter cotton (13) is fixedly arranged inside the shell (1). 5. A plate-and-frame filter for stevia production according to claim 4, characterized in that the filter cotton (13) is made of PP cotton. 6. A plate-and-frame filter for stevia production according to claim 5, characterized in that the metal filter cover (14) and the fixing frame (7) match each other.