CN215039322U - Double-channel sliding plate type backwashing non-stop net replacing device - Google Patents

Abstract

A double-channel sliding plate type backwashing non-stop net changing device comprises a device body, an upper sliding plate type filtering unit and a lower sliding plate type filtering unit, wherein the device body is formed by a main body inlet plate and a main body outlet plate which are oppositely buckled together through a connecting piece, the upper sliding plate type filtering unit and the lower sliding plate type filtering unit are arranged in a hollow slideway in the middle of the device body in a parallel penetrating mode in a sliding fit mode, and the front ends of the upper sliding plate type filtering unit and the lower sliding plate type filtering unit are respectively combined with a piston rod of a hydraulic oil cylinder A, B for driving the sliding plate type filtering units to do reciprocating motion along the hollow slideway in the middle of the device body; the hydraulic oil cylinder is connected with the device body through an upper double-head positioning screw rod, a middle double-head positioning screw rod and a lower double-head positioning screw rod which are arranged at the front end of the device body and an oil cylinder mounting plate which is connected with the extending ends of the upper double-head positioning screw rod, the middle double-head positioning screw rod and the lower double-head positioning screw rod; the sliding plate type filtering unit comprises a reciprocating plate, a circular filtering chamber arranged on the reciprocating plate and a filtering unit arranged in the filtering chamber, wherein the filtering unit consists of a backwashing support, a filtering net, a porous plate and a porous plate outlet groove which are sequentially arranged.

Description

Double-channel sliding plate type backwashing non-stop net replacing device

Technical Field

The utility model relates to a filtration technology of fuse-element material in the trade such as the production of the grain of cutting, goods of various high molecular polymer and recovery recycle is a binary channels slide formula back flush does not shut down and trades net device particularly.

Background

In the prior art, most net changing devices (filters) have the following problems: small filtration area, frequent net replacement, no backwashing function or gravity flow backwashing, low backwashing efficiency, incomplete backwashing, low speed, large pressure and flow fluctuation and the like.

Disclosure of Invention

The utility model aims at providing a double-channel sliding plate type backwashing non-stop net changing device aiming at the defects existing in the prior art.

The purpose of the utility model can be realized by the following technical measures:

the utility model discloses a two-channel sliding plate type backwashing non-stop net changing device, which comprises a device main body, an upper sliding plate type filtering unit and a lower sliding plate type filtering unit, wherein the device main body is formed by a main body inlet plate and a main body outlet plate which are oppositely buckled together through a connecting piece, the upper sliding plate type filtering unit and the lower sliding plate type filtering unit are arranged in a hollow slide way in the middle of the device main body in a parallel penetrating way in a sliding fit way, and the front ends of the upper sliding plate type filtering unit and the lower sliding plate type filtering unit are respectively combined with a piston rod of a hydraulic oil cylinder A, B which is used for driving the sliding plate type filtering units to do reciprocating motion along the hollow slide way in the middle of the device main body; the hydraulic oil cylinder is connected with the device body through an upper double-head positioning screw rod, a middle double-head positioning screw rod and a lower double-head positioning screw rod which are arranged at the front end of the device body and an oil cylinder mounting plate which is connected with the extending ends of the upper double-head positioning screw rod, the middle double-head positioning screw rod and the lower double-head positioning screw rod; the sliding plate type filtering unit comprises a reciprocating plate, a circular filtering chamber arranged on the reciprocating plate and a filtering unit arranged in the filtering chamber, wherein the filtering unit consists of a backwashing support, a filtering net, a porous plate and a porous plate outlet groove which are arranged in sequence, and a net groove for embedding the backwashing support and the filtering net is processed at the inlet end of the filtering chamber; a feed inlet communicated with the upper and lower pre-filtering chambers is formed in the main body inlet plate, and a discharge outlet communicated with the upper and lower post-filtering chambers is formed in the main body outlet plate; the backwashing device is arranged on the device main body and comprises a sewage discharge channel which is respectively communicated with the upper and lower pre-filtering chambers and is provided with a sewage discharge valve, and a material storage chamber which is respectively communicated with the upper and lower post-filtering chambers and is provided with a powerful piston.

Furthermore, the feed inlet of the utility model is respectively communicated with the upper and lower pre-filtering chambers through double feed channels distributed in a splayed shape; the discharge port is respectively communicated with the upper and lower post-filtration chambers through double discharge channels distributed in a splayed shape.

The main body inlet plate and the main body outlet plate are respectively provided with a hot medium oil channel which can ensure that the materials are kept in a molten state in the device; the upper and lower filter front chamber and the upper and lower filter rear chamber are internally provided with convex seals capable of increasing the sealing area.

After the materials pass through the porous plate, the material is prevented from flowing out due to the convex seal arranged in the filtered cavity after passing through the net, so that a porous plate outlet groove is arranged at the outlet of the porous plate, and the filtered clean materials can enter the filtered cavity; the protruding type that is located the back chamber of straining is sealed to be provided with two-way passageway, and discharge channel is connected to the one end connection perforated plate export groove of two-way passageway, the other end, and two-way passageway does not communicate with the storage compartment on the backwash device when normal during operation, is in the encapsulated situation, and two-way passageway forward is flowed this moment, and the material after the filtration flows to discharge channel.

The utility model has the advantages as follows:

1. the utility model discloses a plate structure, the perforated plate wire way is shallow, and the clearance clout is few when trading the net, and new net exhaust speed is fast, and the dead angle is few, and the quick replacement filter screen is difficult for the gassing, and the goods finish is good, output and high quality, reduce the material loss when trading the net.

2. The powerful back washing mode is adopted, the pressure is high, the stress is even, the two strands of melt are overlapped and washed uniformly and thoroughly, the speed is high, and the short circuit phenomenon can be effectively avoided.

3. The dual-channel arrangement, the dual-network filters simultaneously when normal work, one network off-line one network normal work when back flush, the pressure fluctuation is little, can produce continuously and expect.

4. The utility model discloses well protruding type sealing design and two-way channel perfect combination, novel structure, simple and practical, convenient operation.

Drawings

Fig. 1 is a front view (normal operation state of the dual network) of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

Fig. 4 is a diagram showing a state in which the a-net is pushed and exchanged.

Fig. 5 is a sectional view a-a of fig. 4.

Fig. 6 is a sectional view B-B of fig. 4.

Fig. 7 is a structural view of a net backwash (exhaust) state.

Fig. 8 is a sectional view a-a of fig. 7.

Fig. 9 is a sectional view B-B of fig. 7.

Number in the figure: 1 hydraulic cylinder A, 1-1 hydraulic cylinder B, 2 connecting blocks, 3 sliding plate type filtering units, 4 double-end positioning screws, 5 convex seals, a pre-filtering chamber on 6-1, a main body inlet plate 7, 8 double feed channels (feed channels), 9 feed inlets, 10 filler strips, 11 backwashing supports, 12 filter screens, 13 porous plates, 14 hot oil channels, a post-filtering chamber on 15-1, a main body outlet plate 16, a discharge outlet 17, 18 double discharge channels (discharge channels), 19 porous plate outlet grooves, 20 two-way channels, 21 sewage valves, 22 sewage channels, 23 reciprocating plates, 24 storage chambers and 25 powerful pistons.

Detailed Description

The invention will be further described with reference to the following examples (drawings):

as shown in fig. 1 to 3, the dual-channel sliding plate type backwashing non-stop net changing device of the present invention comprises a device body formed by a main body inlet plate 7 and a main body outlet plate 16 which are oppositely buckled together through a connecting piece, and an upper sliding plate type filtering unit 3 and a lower sliding plate type filtering unit 3 which are parallelly arranged in a hollow slide way in the middle of the device body in a penetrating way in a sliding fit manner, wherein the front ends of the upper sliding plate type filtering unit 3 and the lower sliding plate type filtering unit 3 are respectively combined with piston rods of hydraulic cylinders A, B1 and 1-1 for driving the sliding plate type filtering units 3 to do reciprocating motion along the hollow slide way in the middle of the device body; the hydraulic oil cylinder is connected with the device main body through an upper double-head positioning screw rod 4, a middle double-head positioning screw rod 4 and a lower double-head positioning screw rod 4 which are arranged at the front end of the device main body and an oil cylinder mounting plate which is connected with the extension ends of the upper double-head positioning screw rod 4, the middle double-head positioning screw rod 4 and the lower double-head positioning screw rod 4; the sliding plate type filtering unit 3 comprises a reciprocating plate 23, a circular filtering chamber arranged on the reciprocating plate and a filtering unit arranged in the filtering chamber, wherein the filtering unit consists of a backwashing support 11, a filtering net 12, a porous plate 13 and a porous plate outlet groove 19 which are arranged in sequence, and a net groove for embedding the backwashing support 11 and the filtering net 12 is processed at the inlet end of the filtering chamber; the main body inlet plate 7 is provided with a feed inlet 9 communicated with the upper and lower pre-filtering chambers 6 and 6-1, and the main body outlet plate 16 is provided with a discharge outlet 17 communicated with the upper and lower post-filtering chambers 15 and 15-1; the main body of the device is provided with a backwashing device which comprises a sewage discharge channel 22 which is respectively communicated with the upper and lower pre-filtering chambers and is provided with a sewage discharge valve 21, and a material storage chamber 24 which is respectively communicated with the upper and lower post-filtering chambers 15 and 15-1 and is provided with a powerful piston 25.

Furthermore, the feed inlet 9 of the utility model is respectively communicated with the upper and lower pre-filtering chambers 6 and 6-1 through a double feed channel 8 distributed in a splayed shape; the discharge port 17 is respectively communicated with the upper and lower post-filter chambers 15 and 15-1 through double discharge channels 18 distributed in a splayed shape.

The main body inlet plate 7 and the main body outlet plate 16 are both provided with a heat medium oil channel 14 which can ensure that materials are kept in a molten state in the device; the upper and lower filter front chamber and the upper and lower filter rear chamber are internally provided with a convex seal 5 which can increase the sealing area.

After the materials pass through the porous plate, the material is prevented from flowing out because the convex seal is arranged in the filtered cavity after passing through the net, and therefore the porous plate outlet groove 19 is arranged at the outlet of the porous plate, so that the filtered clean materials can enter the filtered cavity; the protruding type that is located the back chamber of straining is sealed to be provided with two-way passageway 20, and the discharge channel is connected to the one end connection perforated plate export groove of two-way passageway, the other end, and the storage compartment on two-way passageway and the backwash device does not communicate when normal during operation is in the encapsulated situation, and two-way passageway forward flows this moment, and the material after the filtration flows to discharge channel.

The utility model discloses a structure function and theory of operation as follows:

one, the utility model discloses a when device twin-net normal filtration (refer to fig. 1~ 3)

Scheme 1: the filter material enters from a feed inlet on the inlet plate of the main body. Be provided with feedstock channel on the main part inlet plate, feedstock channel is the binary channels, is "eight" word distribution, and the material gets into feedstock channel arrival pre-filter chamber through the reposition of redundant personnel under the effect of melt pressure from the feed inlet. The cavity is provided with protruding type seal in the preceding chamber of straining, and protruding type seal can increase sealing area, can in time cut off when releasing trade net and back flush exhaust to strain the connection of preceding cavity and perforated plate net groove, forms the encapsulated situation. All be provided with the hot medium oil passageway on the main part business turn over port board, can guarantee that the material keeps the molten condition in the device.

And (2) a flow scheme: the material first enters the backwash rack. The back washing support is circular, is provided with irregular hollows, has high strength and is not easy to damage relative to the filter screen, can fix the filter screen in normal use and back washing, ensures that the filter screen is not deformed and does not warp, prevents the filter screen from falling off and being clamped into the slide way and pulling the main body inlet plate in the sliding process, and ensures that the device does not leak air or leak materials in later use.

And (3) a flow path: the material melt flows through the filter screen after passing through the back washing bracket, and the mesh number of the filter screen is changed according to the requirement of the filtering precision of the product. And common or corrosion-resistant materials can be used.

And (4) a flow chart: the material fuse-element passes through the perforated plate after passing the net, and the perforated plate plays the effect of supporting the filter screen, and the perforated plate design is two kinds. One is detachable and is arranged on a reciprocating plate, the porous plate is a step-shaped cylinder and is tightly attached to the reciprocating plate under the action of pressure difference between the front net and the rear net, and the porous plate and the reciprocating plate do not move relatively, so that the porous plate has the advantages of being detachable and convenient to clean; the other porous plate and the reciprocating plate are of an integrated structure and have high structural strength. The perforated plate is provided with a cylindrical through hole for a material flow passage, and a conical chamfer is designed close to the end of the filter screen, so that the contact area between the perforated plate and the filter screen is increased, and the filtering area and the backwashing area are increased.

And (5) a flow chart: after the material passes through the perforated plate, because it is sealed to be provided with protruding type in the back chamber of straining after the net crossing, can hinder the outflow of material, so be provided with perforated plate export groove in the exit of perforated plate, make the clean material after the filtration can enter into the back chamber of straining. The protruding type on the export board is sealed to be provided with two-way passageway, and the discharge channel is connected to the perforated plate export groove other end is connected to the one end of two-way passageway, and two-way passageway is not communicated with the storage compartment on the backwash device when normal work, is in the encapsulated situation. At the moment, the bidirectional channel positively flows, and the filtered material flows to the discharge channel.

And (6) a flow path: and finally, the materials of the two discharging channels are converged at the discharging port and flow to the discharging port under the action of the pressure of the melt, so that the filtering of the whole material is completed.

Secondly, the device of the utility model can work normally and start back washing (see figures 7-9)

In the production process of polymer granulation, plastic products and recycling of the plastic products, all melt materials contain impurities, the melt pressure of the materials in front of the filter screen can be increased along with the accumulation of the impurities on the surface of the filter screen, and the filter screen is backwashed after the pressure value which triggers the backwashing action of the filter screen is reached. Two identical powerful pistons are arranged on the center line of the reciprocating plate in the direction of the main body outlet plate far away from the oil cylinder, and the powerful pistons are in rigid clearance sealing with holes in the main body outlet plate. When the powerful piston moves outwards, the position of the original powerful piston forms a storage chamber, and the storage chamber is used for storing materials and is used for extruding and washing the filter screen. The main body inlet plate is far away from the direction of the oil cylinder, two identical sewage discharging channels are arranged on the central line of each reciprocating plate, a sewage discharging valve is arranged at the outlet of each sewage discharging channel, and the sewage discharging valve is in a closed state when the filter screen normally works.

When the oil cylinder A1 or the oil cylinder B1-1 starts to work, the slide plate type filtering unit starts to move, when the outlet groove of the porous plate is connected with the storage chamber, the strong piston is pulled out outwards, at the moment, the bidirectional flow channel is communicated with the storage chamber through the outlet groove of the porous plate, melt materials start to flow towards the storage chamber under the action of the pressure of the melt, when the porous plate moves to a designated backwashing position, the strong piston also reaches the designated position, at the moment, the storage chamber is full of the materials, the pre-filtering chamber is separated from the backwashing support, and the inlet of the filtering chamber, namely, the mesh groove of the filtering unit is communicated with the sewage discharge channel. And opening a sewage discharge valve, simultaneously and rapidly pushing a strong piston, superposing backflow materials of a two-way channel at the outlet groove of the porous plate and double strands of materials generated by rapid return of the multiple strong pistons, extruding the materials in the directions of the porous plate, the filter screen and the backwashing support, simultaneously washing impurities accumulated on the filter screen and the backwashing support under the action of melt pressure, flowing into the sewage discharge channel, and discharging through the sewage discharge valve. After the powerful piston is pushed to a designated position, backwashing is finished, the sewage draining valve is closed, the oil cylinder A1 or the oil cylinder B1-1 starts to work, and the sliding plate type filtering unit starts to move back to return to a normal working state. Because of the even and high everywhere pressure of perforated plate export groove at whole in-process, including fast, so the accumulational impurity of filter screen department can discharge simultaneously, can effectually avoid the emergence of "short circuit" phenomenon. When the filter screens are backwashed, the other filter screen is in a normal filtering state, so that the pressure fluctuation is small in the whole process, and continuous production can be realized. The two filter screens backwash the filter screens in turn, thereby realizing online production without stopping.

Thirdly, the utility model can work normally and start to change the net (see fig. 4 to 6)

After repeated back washing, the strength of the filter screen is reduced and the filter screen is easy to damage. And secondly, the pressure drop before the screen after washing is not obviously close to the set pressure, namely, a part of screen holes cannot be washed by impurity cards, and a new screen needs to be replaced under the condition.

The oil cylinder A1 or the oil cylinder B1-1 starts to work, the slide plate type filtering unit starts to move, the filter screen is completely pushed out of the main body, in the moving process of the slide plate type filtering unit, when the outlet groove of the porous plate is connected with the storage chamber, the powerful piston is slowly pulled outwards, the bidirectional flow channel is communicated with the storage chamber through the outlet groove of the porous plate, the melt material starts to flow towards the storage chamber under the action of the melt pressure, and when the powerful piston reaches a designated position, the storage chamber is filled with the material. At the moment, the filter chamber is also pushed out of the screen replacing position outside the main body, and after a new filter screen is replaced, the sliding plate type filter unit moves back under the action of the oil cylinder until reaching the exhaust position, which is also the position of the backwashing screen. When the filter unit is moved to the position, the movement is stopped, and the inlet of the filter chamber, namely the net groove of the filter unit is communicated with the sewage channel. Open the blowoff valve, promote powerful piston fast simultaneously, perforated plate export groove department has the two-way passageway's backward flow material and the two-strand stack of material that many powerful pistons moved back the production fast, to the perforated plate, filter screen and backwash support direction extrusion, the perforated plate export groove is filled fast to the material, the perforated plate, the filter screen, the backwash support, inside gas is discharged along with the packing of material, after the material is discharged from the blowoff valve, prove that the inside gas of cavity is discharged completely, the hydro-cylinder continues to move back, slide formula filter unit is pulled back to normal operating condition, a trade net process and accomplishes. The other filter screen is the same in the screen changing process, and the two filter screens are changed in turn, so that the on-line screen changing without stopping can be realized.

The device of the utility model adopts a hydraulic oil cylinder, automatically back-washes the filter screen and quickly changes the filter screen. The screen slots on the perforated plate are shallow and uniformly reduce the material loss during screen replacement, save energy, reduce consumption, have simple and convenient operation and reduce labor intensity.

Claims (5)

1. The utility model provides a two-channel slide plate type backwash does not shut down and trades net device which characterized in that: the device comprises a device body consisting of a main body inlet plate and a main body outlet plate which are oppositely buckled together through a connecting piece, and an upper group of sliding plate type filtering units and a lower group of sliding plate type filtering units which are parallelly penetrated and arranged in a hollow slideway in the middle of the device body in a sliding fit mode, wherein the front ends of the upper group of sliding plate type filtering units and the lower group of sliding plate type filtering units are respectively combined with a piston rod of a hydraulic oil cylinder A, B for driving the sliding plate type filtering units to do reciprocating motion along the hollow slideway in the middle of the device body; the hydraulic oil cylinder is connected with the device body through an upper double-head positioning screw rod, a middle double-head positioning screw rod and a lower double-head positioning screw rod which are arranged at the front end of the device body and an oil cylinder mounting plate which is connected with the extending ends of the upper double-head positioning screw rod, the middle double-head positioning screw rod and the lower double-head positioning screw rod; the sliding plate type filtering unit comprises a reciprocating plate, a circular filtering chamber arranged on the reciprocating plate and a filtering unit arranged in the filtering chamber, wherein the filtering unit consists of a backwashing support, a filtering net, a porous plate and a porous plate outlet groove which are arranged in sequence, and a net groove for embedding the backwashing support and the filtering net is processed at the inlet end of the filtering chamber; a feed inlet communicated with the upper and lower pre-filtering chambers is formed in the main body inlet plate, and a discharge outlet communicated with the upper and lower post-filtering chambers is formed in the main body outlet plate; the backwashing device is arranged on the device main body and comprises a sewage discharge channel which is respectively communicated with the upper and lower pre-filtering chambers and is provided with a sewage discharge valve, and a material storage chamber which is respectively communicated with the upper and lower post-filtering chambers and is provided with a powerful piston.

2. The double-channel sliding plate type backwashing non-stop net replacing device according to claim 1, characterized in that: the feed inlet is respectively communicated with the upper and lower pre-filtering chambers through double feed channels distributed in a splayed shape; the discharge ports are respectively communicated with the upper and lower post-filtration chambers through double discharge channels 18 distributed in a splayed shape.

3. The double-channel sliding plate type backwashing non-stop net replacing device according to claim 1, characterized in that: the main body inlet plate and the main body outlet plate are respectively provided with a hot medium oil channel which can ensure that the material is kept in a molten state in the device.

4. The double-channel sliding plate type backwashing non-stop net replacing device according to claim 1, characterized in that: the upper and lower filter front chamber and the upper and lower filter rear chamber are internally provided with convex seals capable of increasing the sealing area.

5. The double-channel sliding plate type backwashing non-stop net replacing device according to claim 1, characterized in that: a perforated plate outlet groove which is convenient for the filtered clean material to smoothly enter the post-filtering chamber is arranged at the outlet of the perforated plate; the convex seal positioned in the post-filter chamber is internally provided with a bidirectional channel, one end of the bidirectional channel is connected with the outlet groove of the porous plate, and the other end of the bidirectional channel is connected with the discharging channel.

Images