CN217139350U

CN217139350U - High pressure filter pressing filter cloth protection device

Info

Publication number: CN217139350U
Application number: CN202220592313.0U
Authority: CN
Inventors: 姚蔚然; 林海燕; 沈玺; 徐宏祥
Original assignee: Shandong Fite Environmental Protection Equipment Co ltd
Current assignee: Shandong Fite Environmental Protection Equipment Co ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-08-09
Anticipated expiration: 2032-03-18

Abstract

The application discloses high pressure filter pressing filter cloth protection device relates to high pressure filter pressing technical field. High pressure filter-pressing filter cloth protection device includes: the shape of the feeding hole is consistent with that of the traditional filter plate, the feeding holes are uniformly distributed on the periphery of the filter plate, and the protection device consists of a central pressing ring and a fixing device. Wherein the central pressing ring consists of a hollow cylinder and a circular thin plate. The central pressing ring is fixed on the filter plate, the diaphragm filter cloth is paved on the surface of the hollow cylinder of the central pressing ring during filter pressing, and then the fixing device is sleeved outside the filter cloth and the central pressing ring, so that the filter cloth is in a stretched state at the feed inlet. Through setting up filter cloth protection device, under the prerequisite that does not change pan feeding ground paste speed and flow, with one share pan feeding dispersion eight strands, reduced every pan feeding mouth pan feeding ground paste pressure, reduced the wearing and tearing effect of pan feeding ground paste to the filter cloth. Meanwhile, the central pressing ring is arranged, so that the friction effect between the high-pressure ore pulp and the position near the filter plate feeding port is reduced, and the service life of the filter cloth is prolonged.

Description

High pressure filter pressing filter cloth protection device

Technical Field

The application relates to the technical field of high-pressure filter pressing, in particular to the technical parameter field of a high-pressure filter pressing filter plate.

Background

The coal slime water treatment system is a necessary link for realizing high-efficiency recovery of coal resources and cyclic utilization of water resources in a coal preparation plant. The filter pressing dehydration is an important process for realizing the recovery, the closed circulation of washing water, the environmental protection and the recovery of separation medium water in the coal slime plant in the coal preparation plant. The membrane filter press is widely applied to filter pressing and dewatering in coal preparation plants in China. The membrane filter press alternately arranges the box-type filter plates and the membrane filter plates, can feed materials at a plurality of ports, and simultaneously the membrane filter plates generate elastic deformation under the high-pressure ring piece, thereby achieving the effect of secondary dehydration. The existing diaphragm filter plate is generally provided with a feeding port at the center of the filter plate, and slurry is sprayed onto the diaphragm filter cloth through the feeding port at a high speed by a short distance. The flow rate of the slurry in the feeding mode is very high, and meanwhile, as the slurry often contains fine particles, the filter cloth is easy to damage in a high-speed state, the product quality is reduced, the production efficiency is reduced, and the long-term use and maintenance of equipment are not facilitated.

SUMMERY OF THE UTILITY MODEL

The application provides a high pressure filter pressing filter cloth protection device for solve the problem among the prior art.

In order to solve the above problems, the present application provides:

a high pressure filter press cloth protection device comprising: the shape of the feeding hole is consistent with that of the traditional filter plate, the feeding holes are uniformly distributed on the periphery of the filter plate, and the protection device consists of a central pressing ring and a fixing device.

As a further alternative of the high-pressure filter press cloth protection device, the central pressing ring is composed of a hollow cylinder and a circular thin plate.

As a further alternative to the high-pressure filter press cloth protection, the central pressure ring is fixed to the filter plate. During filter pressing, the diaphragm filter cloth is paved on the surface of the hollow cylinder of the central pressing ring, and then the fixing device is sleeved outside the filter cloth and the central pressing ring.

As a further alternative of the high-pressure filter pressing filter cloth protection device, when the protection device works, the diaphragm filter cloth is laid on the surface of the hollow cylinder of the central pressing ring during filter pressing, and then the fixing device is sleeved outside the filter cloth and the central pressing ring, so that the filter cloth is in a stretched state at the feeding port.

As a further alternative of the high-pressure filter pressing filter cloth protection device, filter pressing slurry uniformly enters the filter plate space through eight feeding ports.

The beneficial effect of this application is:

the application provides a high pressure filter pressing filter cloth protection device, include with the unanimous of traditional filter plate pan feeding mouth shape, evenly distributed is at eight pan feeding holes around the filter plate. Wherein the protection device consists of a central pressing ring and a fixing device. The protection device reduces the pressure of the feed slurry at each feed inlet and reduces the abrasion of the feed slurry on the filter cloth on the premise of not changing the speed and the flow of the feed slurry. Meanwhile, as the filter cloth is in a stretched state during working, the friction action between the high-pressure ore pulp and the position near the feeding port of the filter plate is reduced, the probability of damage or muddy running of the filter cloth is reduced, the service life of the filter cloth is prolonged, and the production efficiency of equipment is improved. The device simple structure does not change the size of pan feeding mouth through mechanical structure, has avoided appearing because the material is through the centre bore that reduces after, the material pump goes into speed and will diminish or pressure grow, the phenomenon that equipment life shortens.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 shows a schematic view of the overall installation structure of the high-pressure filter-pressing filter cloth protection device of the utility model;

FIG. 2 shows a schematic view of a cross-sectional structure of a pressure A section of the high-pressure filter cloth protection device of the present invention;

fig. 3 shows a partially enlarged view of a portion B in fig. 1.

Description of the main element symbols:

100-filter cloth protection; 110-slurry injection schematic; 120-a central clamping ring; 130-a fixture;

200-filter cloth pressing plate;

300-pressing ring;

400-pressing a ring bending angle;

500-diaphragm filter plate body; 510-a set screw; 520-membrane rubber; 530-membrane filter cloth;

600-diaphragm filter plate boss; 700-inlet and outlet of diaphragm filter plate.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1, the present invention provides a protection device for high pressure filter press cloth, which comprises eight feeding holes uniformly distributed around a filter plate and having the same shape as the feeding hole of a traditional filter plate, wherein the protection device comprises a central pressing ring 120 and a fixing device 130.

Specifically, referring to fig. 2 and 3, the protection device is composed of a central pressing ring 120 and a fixing device 130, wherein the central pressing ring 120 is composed of a hollow cylinder and a circular thin plate. The central pressing ring is fixed on the filter plate 500, the diaphragm filter cloth 530 is spread on the hollow cylindrical surface of the central pressing ring 120 during filter pressing, and then the fixing device 130 is sleeved outside the filter cloth 530 and the central pressing ring 120.

Further, when slurry is injected at a high speed from the inlet and outlet 700 of the membrane filter plate as shown in the schematic diagram 110, the high-speed slurry impacts the filter cloth fixed by the central pressing ring 120 and the fixing device 130 on the filter cloth protection device 100. The friction effect of the high-pressure ore pulp and the part near the feed inlet of the filter plate is reduced, and the probability of damage or turbidity of the filter cloth is reduced.

Because the minerals in China increasingly show the characteristics of poor quality, fine quality and impurity quality, the ores are often ground to the size of fine particles or even micro-fine particles in a coal preparation plant. Under the high-pressure and high-speed filter pressing state of the coal preparation plant, the fine particles have larger kinetic energy. The filter cloth is easily damaged by the high-speed particles and the high-speed slurry, so that the filter cloth is damaged and mixed. Meanwhile, in the traditional high-pressure filter pressing process, only one feeding hole is formed in the center of the filter plate, the pressure is concentrated under a high-pressure state, and the probability of damage to filter cloth is increased.

Therefore, by arranging eight filter cloth protection devices 100 which are uniformly distributed on the membrane filter plate 500, one strand of feed material is dispersed into eight strands on the premise of not changing the speed and flow of the feed material slurry, the pressure of the feed material slurry at each feed inlet is reduced, and the abrasion effect of the feed material slurry on the filter cloth is reduced. Meanwhile, the diaphragm filter cloth 530 is in a stretched state due to the central pressing ring 120 and the fixing device 130 on the filter cloth protection device 100, so that the probability of damage or running of the filter cloth is reduced, the service life of the filter cloth is prolonged, the production efficiency of equipment is improved, and the diaphragm filter cloth protection device has important significance.

In other embodiments, eight filter cloth protection devices 100 evenly distributed around the membrane filter plate 500 may be replaced with a large hole in the center of the membrane filter plate in line with the inlet of a conventional filter plate. The filter cloth protection device is simplified under the condition of not changing the total feeding area and the feeding flow rate, and the installation and the use are convenient.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. A high-pressure filter-pressing filter cloth protection device is characterized by comprising: the shape of the feeding hole is consistent with that of the traditional filter plate, the feeding holes are uniformly distributed on the periphery of the filter plate, and the protection device consists of a central pressing ring and a fixing device.

2. The high pressure filter press cloth protection device according to claim 1, wherein the central clamping ring is comprised of a hollow cylinder and a circular sheet.

3. A high pressure filter press cloth protector according to claim 1, wherein the central clamping ring is fixed to the filter plate.

4. A high pressure filter press cloth protector as claimed in claim 1 wherein the diaphragm cloth is laid on the hollow cylindrical surface of the central clamping ring during filter pressing and the fixing means is then fitted over the cloth and the central clamping ring.

5. The high pressure filter press cloth protector of claim 1, wherein the diaphragm cloth is laid on the surface of the hollow cylinder of the central pressing ring during filter pressing, and then the fixing device is sleeved outside the cloth and the central pressing ring to keep the cloth in a stretched state at the feed inlet.

6. A high pressure filter press cloth protector according to claim 4 where the filter press slurry will enter the filter plate space evenly through eight inlets.