CN208193778U - A kind of filter press filter board group forming not short-circuit filter cake - Google Patents

Abstract

The utility model discloses a filter plate group for a filter press that forms a non-short-circuit filter cake. Blow dry washing, or the problem that the blow dry washing efficiency is not high. The utility model provides a new filter plate structure of a filter press that can form a non-short-circuit filter cake, adopts the design of the outer feeding port, and the water collection channels on both sides of the formed filter cake are connected respectively, which can effectively solve the aforementioned problems , to overcome the defects existing in the prior art. When the utility model is applied to a filter press, when compressed air is used to air-dry the filter cake, the water content of the filter cake can be further reduced on the basis of the existing filter press, and a higher washing rate of the filter cake can be realized, and the filter cake can be improved. The use efficiency of compressed air and washing medium, under the same technical indicators, has a better effect of energy saving and consumption reduction. The utility model has reasonable conception, convenient manufacture, high application value and good application prospect.

Description

A filter plate group for a filter press forming a non-short-circuit filter cake

technical field

The utility model relates to the field of solid-liquid separation, in particular to the field of filter presses, in particular to a filter plate group for a filter press that forms non-short-circuit filter cakes. More specifically, the utility model provides a filter plate of a filter press that can form air-dried and washed filter cakes without short circuit, which can form complete filter cakes without any short-circuit channels, and can further Reduce the moisture content of the filter cake, and achieve a higher filter cake washing rate, effectively improve the use efficiency of compressed air and washing media, and effectively reduce energy consumption.

Background technique

Solid-liquid separation equipment refers to the device or equipment that separates solid and liquid mixtures into solid and liquid by using the permeability of the medium. As one of the oldest human processes, solid-liquid separation is widely used in daily life and industrial production. At present, filter press, as a representative of solid-liquid separation equipment, has been widely used in chemical, pharmaceutical, metallurgy, mineral processing, environmental protection and other fields, and has important application value.

In filter press applications, it is necessary to achieve effective separation of solids and liquids as much as possible, or effective washing of residual liquids. At present, the main feeding method of the filter press is the middle feeding method that runs through all filter plates and thrust plates. The filter cake formed in this way is incomplete due to the presence of the central feeding hole. When using the process of introducing compressed air from one side of the filter cake to take away intermittent water through the gap between the filter cake, the compressed air will short-circuit through the center hole and flow away without passing through the particle gap of the filter cake; the same is true for the washing liquid during washing. In actual use, there is generally a problem that the drying and washing cannot be effectively performed, or the drying and washing efficiency is not high.

In order to solve these problems, some filter press manufacturers have adopted technical measures such as moving the feeding port to the sealing surface close to a certain side sealing surface, but the effect is not ideal.

For this reason, a kind of new device is urgently needed to solve the above problems.

Utility model content

The purpose of the invention of the utility model is to solve the problem that the existing filter press adopts an intermediate feeding method that runs through all filter plates and thrust plates, and the formed filter cake cannot be effectively dried and washed, or the efficiency of drying and washing is not high. A filter plate group for a filter press forming a non-short-circuit filter cake is provided. The utility model provides a new filter plate structure of a filter press capable of forming a non-short-circuit filter cake, which can effectively solve the aforementioned problems and overcome the defects in the prior art. When the utility model is applied to a filter press, when compressed air is used to air-dry the filter cake, the water content of the filter cake can be further reduced on the basis of the existing filter press, and a higher washing rate of the filter cake can be realized, and the filter cake can be improved. The use efficiency of compressed air and washing medium, under the same technical indicators, has a better effect of energy saving and consumption reduction. The utility model has reasonable conception, convenient manufacture, high application value and good application prospect.

In order to achieve the above object, the utility model adopts the following technical solutions:

A filter plate group for a filter press forming a non-short-circuit filter cake, comprising A filter plates, B filter plates, and end plates, wherein the A filter plates and B filter plates are alternately arranged to form a filter press unit, and the A filter plates are N The B filter plate is N-1, N is a natural number and N≥1, the end plate is two and is located at both ends of the filter unit, and the filter unit and the end plates at both ends constitute a filter press Machine filter plate group;

The A filter plate includes the A filter plate body, the filter cloth matched with the A filter plate body, the pressure cloth cover, the feeding main pipe, and the liquid collection unit, and the A filter plate body is provided with a drill-through plate The feeding port, the feeding branch pipe, the liquid collecting port, and the liquid collecting branch pipe on the filter surface on both sides of the body, the pressure cloth cover is arranged on the feeding port, and the feeding main pipe is connected to the feeding port through the feeding branch pipe;

The B filter plate includes a B filter plate body, a filter cloth matched with the B filter plate body, a liquid collection port, and a liquid collection branch pipe, and the B filter plate body is not provided with a feeding port and a feeding branch pipe;

It also includes at least two groups of liquid collection main pipes, one group of liquid collection main pipes is connected with the liquid collection branch pipe under the A filter plate body, and the liquid collection port under the A filter plate body to form the first liquid collection unit, and one set of liquid collection main pipes and The liquid collection branch under the B filter plate body and the liquid collection port under the B filter plate body are connected to form the second liquid collection unit, and the first liquid collection unit and the second liquid collection unit are respectively located on both sides of the filter press unit .

The feeding port on the A filter plate body is close to the sealing surface of the A filter plate body.

The A filter plate is 1-70.

The number of filter cakes formed by the filter plate group of the filter press is 2 to 140, and must be an even number.

The feeding main pipe is arranged at the ear hole above the filter plate body of A, and also includes a sealing ring matched with the feeding main pipe arranged at the ear hole above the filter plate body of A, and the sealing ring is arranged on the filter plate B At the upper ear hole of the board body.

The feed main pipe is separately arranged outside the filter plate A, and also includes a connecting hose, and the feed main pipe is connected to the feed port through the connecting hose and the feed branch pipe in turn.

The liquid collection main pipe of the first liquid collection unit and the liquid collection main pipe of the second liquid collection unit are arranged outside the filter plate group of the filter press;

Or the ear holes on both sides of the A filter plate body and the B filter plate body are respectively provided with a liquid collection main port, and the liquid collection main ports at both ends of the filter press unit are connected in sequence to form the first liquid collection unit respectively. The liquid main pipe and the liquid collecting main pipe of the second liquid collecting unit, the liquid collecting main pipe of the first liquid collecting unit and the liquid collecting main pipe of the second liquid collecting unit are respectively located on both sides below the filter plate group of the filter press.

In view of the foregoing problems, the utility model provides a filter plate group for a filter press that forms a non-short-circuit filter cake. The utility model has carried out a brand-new design on the structure of the filter plate group of the filter press, and adopts the design method of feeding from the side and connecting the A and B sides of the filter cake at the liquid inlet respectively, which can form a complete filter without any short-circuit channel. cake. The two sides of the filter cake are recorded as A side and B side respectively; when liquid and gaseous pressure media are applied on the side of all filter cakes through the channels of all connected filter cake A sides, the media can only uniformly pass through the gaps between the filter cake particles. A gap penetrates to the B side of the filter cake, and it is discharged through the confluence port connected to the B side; on the contrary, when the liquid and gaseous pressure medium is applied to the side of all the filter cakes through the channel of all the connected filter cake B sides, the medium It can only penetrate through every gap between the filter cake particles evenly to the A side of the filter cake, and be discharged through the confluence port connected to the A side.

The utility model effectively solves the aforementioned problems, and has ingenious conception, reasonable design, simple structure and high practical value. In addition, based on the improvement of the structure, compared with the existing filter press, the utility model can further reduce the moisture content of the filter cake, realize a higher washing rate of the filter cake, and improve the use efficiency of compressed air and washing medium. According to the actual measurement, under the same technical index, compared with the same type of equipment, the utility model can reduce the water content of the filter cake by more than 5-10%, increase the washing rate by 30-40%, and have better dehydration and washing effects.

Description of drawings

Fig. 1 is a structural schematic diagram of a filter plate of an existing filter press.

Fig. 2 is a sectional view taken along line A-A of Fig. 1 .

FIG. 3 is a partially enlarged schematic diagram of B in FIG. 2 .

Fig. 4 is a structural schematic view of the existing filter plate during press filtration.

FIG. 5 is a schematic structural view of filter plate A in Example 1.

Fig. 6 is a sectional view taken along line A-A of Fig. 5 .

FIG. 7 is a partially enlarged schematic diagram of B in FIG. 6 .

8 is a schematic structural view of the B filter plate in Example 1.

Fig. 9 is a sectional view taken along line A-A of Fig. 8 .

FIG. 10 is a partially enlarged schematic diagram of B in FIG. 9 .

FIG. 11 is a schematic structural diagram of the combination of Embodiment 1.

FIG. 12 is a schematic structural view of filter plate A in Example 2.

Fig. 13 is a sectional view taken along line A-A of Fig. 12 .

FIG. 14 is a partially enlarged schematic diagram of B in FIG. 13 .

FIG. 15 is a schematic structural view of the B filter plate in Example 2.

Fig. 16 is a sectional view taken along line A-A of Fig. 15 .

FIG. 17 is a partially enlarged schematic diagram of B in FIG. 16 .

Fig. 18 is a schematic structural diagram of the combination of embodiment 2.

Marks in the figure: 1. Feeding port, 2. Liquid sink port, 3. Plate body, 4. Filter cloth, 5. Filter cake side A, 6. Filter cake side B, 8. Press cloth cover, 9. Feeding Branch pipe, 10, feed main pipe, 11, ear hole, 12, liquid collection branch pipe, 13, liquid collection main pipe, 14, connecting hose, 15, A filter plate body, 16, B filter plate body.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The existing filter plate of the filter press is shown in Figure 1, the feeding port of the filter plate is located at the center of the plate body, and the liquid collection port is located at the bottom of the plate body. FIG. 2 shows a sectional view along the line A-A of FIG. 1 , and FIG. 3 shows a partially enlarged schematic view of B in FIG. 2 .

Fig. 4 shows the structural schematic diagram of the existing filter plate during press filtration, and the periphery of the feed inlet is a short-circuit point. As shown in the figure, the filter cake formed by the existing filter plate is incomplete. When liquid and gaseous pressure medium is applied to one side of the filter cake, it will pass through the feeding holes left on the filter cake, causing a short circuit problem, which also leads to caused the aforementioned problems.

For this reason, the utility model has carried out brand-new design to the filter plate structure, has provided two different design proposals, as shown below.

Example 1

As shown in the figure, the filter plate set of the filter press in this embodiment includes a filter plate A, a filter plate B, and an end plate. In this embodiment, the number of A filter plates is preferably 35-50, the number of B filter plates is one less than that of A filter plates, and the A filter plates and B filter plates are arranged alternately to form a filter press unit. There are two end plates and the end plates are respectively located at both ends of the filter press unit, and the filter press unit and the end plates at both ends constitute a filter plate group of the filter press.

The A filter plate includes the A filter plate body, the filter cloth matched with the A filter plate body, the pressure cloth cover, the feeding main pipe, and the liquid collection unit. The feeding port, feeding branch pipe, liquid inlet, liquid collecting branch pipe on the surface, the pressure cloth cover is set on the feeding port, the feeding main pipe is arranged on the ear hole above the A filter plate body, and the feeding main pipe passes through the feeding branch pipe Connected with the feeding port. The B filter plate includes the B filter plate body, the filter cloth matched with the B filter plate body, the sealing ring, the liquid collection port, and the liquid collection branch pipe. The B filter plate body is not provided with a feeding port and a feeding branch pipe. In the B filter plate, the sealing ring is set at the ear hole above the B filter plate body, and is matched with the feeding main pipe set at the ear hole above the A filter plate body.

At the same time, the ear holes at both ends of the A filter plate body and the B filter plate body are respectively provided with a liquid collection main port, and the liquid collection main ports at both ends are connected in turn to form two sets of liquid collection main pipes. Among them, a group of liquid collection main pipes are connected with the liquid collection branch pipes under the A filter plate and the liquid collection ports under the A filter plate to form the first liquid collection unit, and a group of liquid collection main pipes are connected with the liquid collection ports on the B filter plate and the B filter plate. The liquid collection branch pipes on the board are connected to form the second liquid collection unit. At the same time, the first liquid collection unit and the second liquid collection unit are respectively located on both sides below the filter press unit. At the same time, the feeding port on the A filter plate body is close to the sealing surface of the A filter plate body.

In this embodiment, as shown in the figure, the filter plates arranged in parallel in the filter press unit are divided into two types: A filter plate and B filter plate, the first is B filter plate, and the second is A filter plate, arranged alternately. In this scheme, the total number of filter plates in the filter plate group of the filter press can only be an odd number (including the end plates at both ends), and the number of formed filter cakes can only be an even number. The filter plate B is not provided with feed port and feed branch pipe; the filter plate A is set as close as possible to the sealing surface of the filter plate, and the feed port that penetrates the filter surface on both sides of the filter plate A is drilled to connect the feed port and the feed port as shown in the figure. The feeding branch of the material main pipe. In this embodiment, the liquid collection main pipe and the feed main pipe are formed by laminating the ear holes integrated with the filter plate, and sealing rings are provided on both sides of the ear holes of the filter plate B to seal the channels formed during lamination.

In this embodiment, all the liquid collection of the A filter plate is collected to one liquid collection main pipe, and all the filtrate of the B filter plate is collected to another liquid collection main pipe. The design method of the sinking channel of the filter cake A and B side respectively is to connect the sinking channel of all the filter plates to the filtrate of the filter cake A side to a main pipe, and connect the sinking channel of the B side filtrate to the Another main pipe, in the subsequent drying or washing work, through the A-side liquid collection main pipe, the compressed air or washing liquid is introduced into the A-side of the filter cake, and the compressed air or washing liquid passes through the filter cake particles to take away the residual liquid intermittently Finally, it flows into another main pipe through the confluence channel connected to the B side of the filter cake, so as to achieve the purpose of drying or washing.

When drying or washing, the compressed air or washing liquid is introduced into the two sides of the A filter plate through the liquid manifold, the liquid manifold and the liquid inlet of the A filter plate, and after passing through two adjacent filter cakes, it passes through the B filter plate The liquid inlet, the liquid branch pipe and the liquid main pipe flow into the designated container. vice versa.

Example 2

In this embodiment, the feeding main pipe is separately arranged outside the plate of the A filter plate, and also includes a connecting hose, and the feeding main pipe is connected to the feeding port through the connecting hose and the feeding branch pipe in turn. At the same time, a group of liquid collection main pipes is connected with the connecting hose, the liquid collection branch pipe under the A filter plate body, and the liquid collection port under the A filter plate body to form the first liquid collection unit. A group of liquid collection main pipes and the connecting hoses , the liquid collection branch pipe below the filter plate body of B, and the liquid collection port below the filter plate body of B are connected to form the second liquid collection unit. The liquid collection manifold of the first liquid collection unit is separately installed on the filter plate body of A, the liquid collection main pipe of the second liquid collection unit is separately installed outside the B filter plate, and the first liquid collection unit and the second liquid collection unit are respectively located in the filter press The two sides of unit; Others are identical with embodiment 1. In this embodiment, corresponding ear holes may be provided on the upper and lower sides of the filter plate bodies of A and B, or may not be provided with corresponding ear holes as shown in the figure.

In this structure, the feeding ports between the filter plates A do not communicate with each other, and the feeding branch pipes set in the filter plates are connected to the feeding main pipe placed outside the filter plates, and then connected to the feeding device through the feeding main pipe. When the device is working, the feeding device sends the material into the feeding main pipe, and then distributes it into the feeding port through the connecting hose and feeding branch pipe, and the feeding port sends the material into the two adjacent filter chambers.

To sum up, in the embodiment of the present invention, the filter plate set of the filter press consists of multiple filter plates arranged on the pressing mechanism of the filter press, and after being pressed by the pressing mechanism to form a closed filter chamber, solid-liquid separation and washing are performed. Working, the feeding device imports the material through the feeding main pipe, and then distributes the material to each filter chamber through the feeding branch pipe and the feeding port, and the liquid passing through the filter cloth flows through the liquid inlet, the liquid collecting branch pipe and the liquid collecting main pipe respectively to the designated The container is stored, and the solid-liquid separation is realized after the slag is intercepted to form a non-short-circuit filter cake. The utility model is designed in such a way that the feed from the side and the surface A and surface B of the filter cake at the liquid inlet are respectively connected to form a complete filter cake without any short-circuit channel. When liquid and gaseous pressure media are applied to all filter cakes on this side through the passages on one side of all the connected filter cakes (such as A side), the medium can only penetrate to the other side of the filter cake evenly through each gap between the filter cake particles. One side (side B) is discharged through the confluence port connected to side B. Further, the compressed air and washing medium are introduced from the manifold to the A side (or B side) of the filter cake, the pressure rises, and the medium penetrates the filter cake particles to reach the B side (or A side) of the filter cake intermittently, and is taken away in the gap of the filter cake. The residual liquid will reach the designated container through the liquid manifold, so as to achieve effective drying or washing.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (7)

1. A filter press filter plate group forming a non-short-circuit filter cake, is characterized in that, comprises A filter plate, B filter plate, end plate, and described A filter plate, B filter plate are alternately arranged to form a filter press unit, so The A filter plate is N, the B filter plate is N-1, N is a natural number and N≥1, the end plate is two and is located at both ends of the filter unit, and the filter unit is connected to the two The end plate at the end constitutes the filter plate group of the filter press; The A filter plate includes the A filter plate body, the filter cloth matched with the A filter plate body, the pressure cloth cover, the feeding main pipe, and the liquid collection unit, and the A filter plate body is provided with a drill-through plate The feeding port, the feeding branch pipe, the liquid collecting port, and the liquid collecting branch pipe on the filter surface on both sides of the body, the pressure cloth cover is arranged on the feeding port, and the feeding main pipe is connected to the feeding port through the feeding branch pipe; The B filter plate includes a B filter plate body, a filter cloth matched with the B filter plate body, a liquid collection port, and a liquid collection branch pipe, and the B filter plate body is not provided with a feeding port and a feeding branch pipe; It also includes at least two groups of liquid collection main pipes, one group of liquid collection main pipes is connected with the liquid collection branch pipe under the A filter plate body, and the liquid collection port under the A filter plate body to form the first liquid collection unit, and one set of liquid collection main pipes and The liquid collection branch under the B filter plate body and the liquid collection port under the B filter plate body are connected to form the second liquid collection unit, and the first liquid collection unit and the second liquid collection unit are respectively located on both sides of the filter press unit . 2. The filter press filter plate group forming a non-short-circuit filter cake according to claim 1, wherein the feeding port on the A filter plate body is close to the sealing surface of the A filter plate body. 3. The filter plate group of a filter press forming a non-short-circuit filter cake according to claim 1, wherein there are 1 to 70 said A filter plates. 4. The filter plate group for a filter press forming a non-short-circuit filter cake according to claim 1, wherein the number of filter cakes formed by the filter plate group for the filter press is 2 to 140, and must be an even number. 5. According to claim 1, the filter press filter plate group forming non-short-circuit filter cake is characterized in that, the feed main pipe is arranged at the ear hole above the A filter plate body, and also includes a filter plate with A filter plate The sealing ring matched with the feeding main pipe arranged at the upper ear hole of the body, and the sealing ring is arranged at the upper ear hole of the B filter plate body. 6. according to claim 1, form the press filter plate group of non-short-circuit filter cake, it is characterized in that, described feeding main pipe is separately arranged outside A filter plate board, also comprises connecting hose, described feeding main pipe It is connected with the feeding port through the connecting hose and the feeding branch pipe in turn. 7. According to any one of claims 1 to 6, the filter press filter plate group forming a non-short-circuit filter cake, is characterized in that, the liquid collection main pipe of the first liquid collection unit and the liquid collection pipe of the second liquid collection unit The main pipe is arranged outside the filter plate group of the filter press; Or the ear holes on both sides of the A filter plate body and the B filter plate body are respectively provided with a liquid collection main port, and the liquid collection main ports at both ends of the filter press unit are connected in sequence to form the first liquid collection unit respectively. The liquid main pipe and the liquid collecting main pipe of the second liquid collecting unit, the liquid collecting main pipe of the first liquid collecting unit and the liquid collecting main pipe of the second liquid collecting unit are respectively located on both sides below the filter plate group of the filter press.