CN105688469B - A kind of filter frame of superelevation compression elasticity squeezer - Google Patents

Abstract

The invention discloses a filter frame of an ultra-high pressure elastic press. It includes a pressure plate frame and a push plate frame; a positioning pin and a sealing spring are set between the pressure plate frame and the push plate frame; the filter plate mounting plate is fixed to the pressure plate frame; the fixed filter plate is fixed to the filter plate mounting plate The movable filter plate and the fixed filter plate are movably connected by connecting pins; a number of ejector springs are arranged between the movable filter plate and the fixed filter plate; the pressure-bearing plate frame is provided with an inwardly recessed metal seal, which pushes the plate frame There are non-metallic seals protruding outward corresponding to the former. The advantages of the invention: solve the problem of insufficient bending resistance of the original filter frame; solve the poor appearance and structural defects caused by the welding problem, reduce the welding workload and improve the processing efficiency; overcome the original filter frame that cannot be automatically The unloading problem has improved the degree of automation; the sealing performance between the filter frames has been increased, the mud feeding pressure has been increased, the mud feeding time has been shortened, and the work efficiency has been improved; the weight of the equipment has been reduced.

Description

A filter frame of an ultra-high pressure elastic press

technical field

The invention belongs to the technical field of environmental protection, and relates to a sludge dewatering device, in particular to a filter frame of an ultra-high pressure elastic press.

Background technique

Plate and frame diaphragm filter press is a kind of equipment that separates materials from solid and liquid through pressure filtration. It is widely used in food, chemical, environmental protection and sewage treatment industries, especially for the separation of sticky and fine matter. It has unique advantages.

The ultra-high pressure elastic press is a high-efficiency plate and frame filter press equipment. This equipment improves the structure of the traditional plate and frame. It has low investment cost, high dehydration efficiency, small footprint, good treatment effect, simple operation and maintenance, etc. Integrating three advantages into one, the ultra-high pressure elastic press does not need additional secondary press booster equipment and press medium, and completely relies on spring compression to reduce the volume of the filter chamber. It has a large compression ratio, direct force, high pressure, and short working cycle. The efficiency is equivalent to 3-4 times of the traditional plate and frame membrane filter press.

The filter frame of the existing ultra-high pressure elastic press includes a pressure bearing plate and a pushing plate frame (movable frame). The relative displacement between the pressure bearing plate and the pushing plate frame changes the volume of the filter chamber, and the pressure bearing plate is squeezed During the process, the pressure is often deformed in the middle of the pressure plate due to uneven force, and there is a gap between the pressure plate and the pushing plate frame to cause material leakage, resulting in the scrapping of the entire filter frame.

The filter frame of the existing ultra-high pressure elastic press also has the following defects:

1. The bending resistance of the filter frame is insufficient.

2. There are poor appearance and structural defects caused by welding problems, heavy welding workload and low processing efficiency.

3. The filter frame cannot be unloaded automatically.

4. The sealing performance between the filter frames is not good enough, the mud feeding pressure is low, the mud feeding time is long, and the work efficiency is low.

5. The equipment is bulky. The pressure bearing plate and the pushing plate frame are generally made of carbon steel, which is relatively expensive, not resistant to corrosion, and heavy in weight.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a filter frame for an ultra-high pressure elastic press with strong bending resistance, reasonable structural design, good sealing performance, high degree of automation and high working efficiency.

The purpose of the present invention is achieved through the following technical solutions:

A filter frame for an ultra-high pressure elastic press, which includes a pressure-bearing plate frame and a pushing plate frame; the pressure-bearing plate frame and the pushing plate frame are flexibly connected by positioning pins; There are several sealing springs on the same circumference; the filter plate mounting plate is fixedly connected with the pressure plate frame; the fixed filter plate and the filter plate mounting plate are fixedly connected by bolts; the movable filter plate and the fixed filter plate are connected by connecting pins; There are several ejection springs on the same circumference between the filter plate and the fixed filter plate; the connecting pins and the ejection springs pass through the filter plate mounting plate; aisle.

Furthermore, an inwardly recessed metal seal is provided on the outer surface of the pressure plate frame, and an outwardly protruding non-metallic seal (rubber seal) is provided at a corresponding position on the pressing plate frame.

Furthermore, the pressure-bearing plate frame is made of a profiled square tube, and the middle of the square tube is a cavity structure.

Furthermore, the filter plate mounting plate is composed of two steel plates (6mm) plus multiple reinforcing ribs in the middle.

Furthermore, the movable filter plate is a whole plate with a hole in the center of the whole plate, and a feeding channel is set; or, the movable filter plate is a plurality of circular blocks; or, the movable filter plate is a split hinge type two One plate, that is, the movable filter plate is two left and right plates, and the left and right plates are movably connected by two upper and lower hinges; the center position of the joint of the two plates is opened to set the feeding channel.

Beneficial effects of the present invention:

The filter frame of the ultra-high pressure elastic press of the present invention has the following advantages:

1. Solved the problem of insufficient bending resistance of the original filter frame.

2. Solve the poor appearance and structural defects caused by welding problems, reduce the welding workload and improve the processing efficiency.

3. It overcomes the problem that the original filter frame cannot be unloaded automatically, and improves the degree of automation.

4. The sealing performance between the filter frames is increased, the mud feeding pressure is increased, the mud feeding time is shortened, and the working efficiency is improved.

5. Reduced equipment weight.

Description of drawings

Fig. 1 is the overall structure schematic diagram (side view) of the filter frame of a kind of ultra-high pressure elastic press of the present invention;

Fig. 2 is the schematic diagram that metal seal among the present invention and non-metal seal are installed between two filter frames;

Fig. 3 is a schematic diagram of the working principle of the metal seal and the non-metal seal in the present invention;

Fig. 4 is a schematic structural view of the pressure plate frame and the filter plate mounting plate part in the present invention;

Fig. 5 is a structural schematic diagram of the original pressure bearing plate;

Fig. 6 is the enlarged structural representation of filter plate installation plate among the present invention;

Fig. 7 is a schematic diagram of the front structure of a filter frame assembly in the present invention (integral ejection type mud discharge);

Fig. 8 is a side view of the filter frame of the integral ejection type in Fig. 7 (in mud state);

Fig. 9 is a side view (unloading state) of the filter frame of the integral ejection type in Fig. 7;

Fig. 10 is a schematic view of the front structure of another filter frame assembly in the present invention (four ejector type mud discharge);

Fig. 11 is a side view of the filter frames of four ejection types in Fig. 10 (into the mud state);

Fig. 12 is a side view (discharging state) of four ejector-type filter frames in Fig. 10;

Fig. 13 is the front structure schematic diagram of another kind of filter frame assembly among the present invention (eight ejection type unloading mud);

Fig. 14 is a schematic view of the front structure of another filter frame assembly in the present invention (split hinge type mud discharge);

Fig. 15 is a side view of the filter frame of the split hinge type in Fig. 14 (in mud state);

Fig. 16 is a side view of the split hinge filter frame in Fig. 14 (unloading state).

In the figure: 1—pressure plate frame, 2—push plate frame, 3—location pin, 4—sealing spring, 5—filter plate mounting plate, 6—fixed filter plate, 7—connecting pin, 8—movable filter plate , 9—Ejector spring, 10—Feeding channel, 11—Metal seal, 12—Non-metal seal, 13—Square tube, 14—Cavity structure, 15—Reinforcing rib, 16—Filter cloth, 17—Ear Shoulder, 18—roller, 19—hinge, 20—main beam

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example

As shown in Figure 1, a filter frame of an ultra-high pressure elastic press according to the present invention includes a pressure-bearing plate frame 1 and a pushing plate frame 2; the positioning pin 3 moves between the pressure-bearing plate frame 1 and the pushing plate frame 2 connection; a number of sealing springs 4 are arranged on the same circumference between the pressure plate frame 1 and the push plate frame 2; the filter plate mounting plate 5 is fixedly connected (welded) to the pressure plate frame 1; the fixed filter plate 6 is installed with the filter plate The plate 5 is fixedly connected by bolts; the movable filter plate 8 and the fixed filter plate 6 are movably connected by connecting pins 7; the movable filter plate 8 and the fixed filter plate 6 are provided with a number of ejection springs 9 on the same circumference; the connecting pins 7 and the ejection spring 9 pass through the filter plate mounting plate 5; the filter plate mounting plate 5 and the center of the fixed filter plate 6 have a hole, and a feed channel 10 is set.

As shown in Figure 2 and Figure 3, an inwardly recessed metal seal 11 is installed on the outer surface of the pressure plate frame 1, and an outwardly protruding non-metal seal 11 corresponding to the former is installed on the corresponding position on the push plate frame 2. Seal 12 (rubber seal).

As shown in FIG. 4 , the pressure-bearing plate frame 1 is made of a profiled square tube 13 , and the middle of the square tube 13 is a cavity structure 14 .

As shown in FIG. 6 , the filter plate mounting plate 5 is composed of two 6mm steel plates plus a plurality of reinforcing ribs 15 in the middle.

As shown in Figure 7, the movable filter plate 8 is a whole plate, and the central opening of the whole plate is provided with a feed channel 10; or, as shown in Figure 10 and Figure 13, the movable filter plate 8 is a plurality of circular blocks; Alternatively, as shown in Figure 14, the movable filter plate 8 is a split hinge type left and right plates, the left and right plates are movably connected by the upper and lower hinges 19, and the center position of the joint of the two plates is opened. A feed channel 10 is provided. The split hinge type means that there are two left and right movable filter plates, and the middle is movably connected by the upper and lower hinges (which can be rotated relatively).

As shown in Fig. 7, Fig. 10, Fig. 13 and Fig. 14, the filter frame assembly of the present invention is installed on the main beam 20 of the ultra-high pressure elastic press through the ear shoulder 17 and the roller 18.

The filter frame of the ultra-high pressure elastic press of the present invention has the following advantages:

1. Solved the problem of insufficient bending resistance of the original filter frame.

Under the combined effect of mud impact and mud flow pressure difference, the entire filter frame will bend to the side of the pressure plate frame and the filter plate mounting plate.

Compared with the original structure, the strength of the filter frame of the existing structure is increased, and the bending resistance capacity is improved.

The filter plate installation plate was originally a single plate of 12mm, but now it is a stiffened plate in the middle of two 6mm plates (that is, multiple ribs 15), (see Figure 6), and now it is a box, and the cost does not increase correspondingly The premise.

2. Solve the poor appearance and structural defects caused by welding problems.

The original structure of the pressure-bearing plate frame is a layered structure welded by multi-layer steel plates, and there are welds in the appearance; the current structure is directly made of profiled square tubes, and the outer surface does not need to be welded, and the appearance quality is good.

a The original structure (Figure 5): multi-layer welded structure.

b Existing structure (Figure 4): middle cavity structure.

3. By setting the ejection spring between the fixed filter plate and the movable filter plate, the automatic unloading of the filter cake (spring unloading) is realized, which overcomes the problem that the original filter frame cannot be unloaded automatically, and improves the degree of automation. (Schematic 3)

1) When entering the mud, under the action of the mud pressure, the movable filter plate is pressed down, the ejection spring 9 is compressed, and the spring stores energy;

2) When unloading the mud, there is no pressure effect of the mud, the spring energy is released, the ejection spring 9 rebounds and stretches, and the mud cake is automatically ejected and unloaded.

According to the pressure on the mud cake, three ways of unloading mud are adopted:

(a) Integral ejection mud discharge, as shown in Figure 7-9, the movable filter plate is a whole plate with a hole in the middle;

(b) Sub-block ejection type mud discharge, as shown in Figure 10-13, the movable filter plate is a number of circular blocks (the movable filter plate in Figure 10 is four circular blocks, which are four ejection type mud discharge ; Movable filter plate is eight circular blocks among Fig. 13, is eight ejection formula unloading mud);

(c) Split hinge type mud unloading, as shown in Figure 14-16, the movable filter plate is a split hinge type left and right plates, and the left and right plates are movably connected by two upper and lower hinges 19 .

4. The sealing performance is increased, the mud feeding pressure is increased, the mud feeding time is shortened, and the working efficiency is improved.

Inwardly recessed metal seals 11 are installed around the outer surface of the pressure plate frame, and outwardly protruding non-metallic seals 12 (rubber seals) corresponding to the former are provided at corresponding positions on the push plate frame. The metal seal 11 on the pressure plate frame matches the shape of the non-metal seal 12 on the push plate frame. When the ultra-high pressure elastic press is working, the metal seal 11 on the pressure plate frame of a certain filter frame, and the non-metallic seal 12 on the push plate frame of the adjacent filter frame (as shown in Figure 3, between the two Two layers of filter cloths 16) have been spaced to cooperate to realize sealing and enhance the sealing performance.

The seal on the push plate frame is made of non-metallic material (rubber), which has ductility and can be well matched with the shape of the metal seal on the pressure plate frame when sealing. At the same time, the non-metal seal is soft and can be easily Protect the filter cloth well and improve the life of the filter cloth.

5. Reduced equipment weight. The interior of the pressure plate frame adopts a cavity structure, which greatly reduces the weight.

Claims (9)

1. A filter frame of an ultra-high pressure elastic press, characterized in that it comprises a pressure plate frame and a push plate frame; the pressure plate frame and the push plate frame are movably connected by positioning pins; the pressure plate frame and the push plate frame There are several sealing springs on the same circumference between the pushing plate and frame; the filter plate mounting plate is fixedly connected with the pressure plate frame; the fixed filter plate and the filter plate mounting plate are fixedly connected by bolts; the movable filter plate and the fixed filter plate are passed The connecting pins are connected flexibly; there are several ejection springs on the same circumference between the movable filter plate and the fixed filter plate; both the connecting pins and the ejection springs pass through the filter plate mounting plate; Holes are opened to set the feeding channel. 2. The filter frame of the ultra-high pressure elastic press according to claim 1, wherein the outer surface of the pressure plate frame is provided with an inwardly recessed metal seal, and the corresponding position on the push plate frame is provided with a The former corresponds to an outwardly protruding non-metallic seal. 3. The filter frame of an ultra-high pressure elastic press according to claim 1 or 2, wherein the pressure-bearing plate frame is made of a profiled square tube, and the middle of the square tube is a cavity structure. 4. The filter frame of an ultra-high pressure elastic press according to claim 3, wherein the filter plate mounting plate is composed of two steel plates and a plurality of reinforcing ribs in the middle. 5 . The filter frame of the ultra-high pressure elastic press according to claim 4 , wherein the filter plate mounting plate is composed of two 6mm steel plates and a plurality of reinforcing ribs in the middle. 6. The filter frame of the ultra-high pressure elastic press according to claim 1 or 2, characterized in that the movable filter plate is a whole plate, and a hole is opened in the center of the whole plate, and a feeding channel is set. 7. The filter frame of the ultra-high pressure elastic press according to claim 1 or 2, wherein the movable filter plate is two plates of a split hinge type, that is, the movable filter plate is two plates on the left and right, and two plates on the left and right. The boards are movably connected by two upper and lower hinges; a hole is opened in the center of the joint of the two boards to set the feeding channel. 8. The filter frame of the ultra-high pressure elastic press according to claim 1 or 2, wherein the movable filter plate is a plurality of circular blocks. 9. The filter frame of the ultra-high pressure elastic press according to claim 8, wherein the movable filter plate is four or eight circular blocks.