CN214562837U

CN214562837U - Continuous-belt net replacing device

Info

Publication number: CN214562837U
Application number: CN202120204625.5U
Authority: CN
Inventors: 李海江
Original assignee: Tianjin Rongchen Electromechanical Equipment Co ltd
Current assignee: Tianjin Rongchen Electromechanical Equipment Co ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-02
Anticipated expiration: 2031-01-26

Abstract

The utility model relates to the field of plastic machinery, in particular to a continuous-belt screen replacing device, which comprises a screen replacing device body and a board connecting device, and further comprises a connecting frame arranged on the screen replacing device body, wherein the outer side of the connecting frame is connected with a hydraulic cylinder or a cylinder, the inner side of the connecting frame is connected with the board connecting device, the inner side of the connecting frame is provided with a fixing frame, one side of the fixing frame is inserted into the board connecting device, the other side of the fixing frame is fixedly connected with a piston rod of the hydraulic cylinder or the cylinder, four board screens are sequentially and movably connected in the fixing frame, the surfaces of the board screens are squares or rectangles, and the middle part of the board screens is provided with a circular filtering channel consisting of a plurality of intensive round holes; the size of the plate connecting device is just large enough to accommodate three plate nets, the middle position is provided with a filtering plate net, the two side plate nets are anti-overflow preheating plate nets, and the outer part of the plate connecting device is provided with a spare plate net; the connecting device is provided with a feeding channel and a discharging channel, and the size of the connecting device is matched with that of the filtering channel. The utility model has the advantages that: the continuous belt can be changed quickly, and the filtering effect is good.

Description

Continuous-belt net replacing device

Technical Field

The utility model relates to a plastics machinery especially relates to a constantly take screen changing device.

Background

In agricultural production, drip irrigation tape irrigation is a common operation method, and in the process of producing the drip irrigation tape, production raw materials comprise waste drip irrigation tapes, greenhouse films and other plastics, and a new drip irrigation tape is produced after remelting; during the operation of the plastic extruder, residues can be generated in a plastic melt due to plasticization and heating, and after some sandstone impurities carried by raw materials enter the extruder, the flow channel can be easily blocked, so that the plastic products have the defects of sand holes and the like; often can add at extruder department and establish filter equipment for getting rid of residue and impurity, filter impurity through the filter screen among the filter equipment, it is too much when the filter screen is left to change the filter screen in order to guarantee the filterable quality of material when impurity.

In the prior art, the patent numbers: 201921443852.2, a secondary filter screen changer is disclosed, including screen changer main part, establish mounting bracket, hydraulic cylinder in the screen changer main part, there is the picture peg hydraulic stem bottom, has the filtration passageway in the picture peg, picture peg and the inside sliding connection of screen changer main part are equipped with discharging hole in the screen changer main part, and the filtration passageway includes primary filter screen and the secondary filter screen of fixing on the picture peg through the filter screen clamping ring, filters passageway and discharging hole size phase-match, and the discharging hole circumference outside is equipped with sealing device. The technical problems that arise from this are: (1) when the plastics melt filters, earlier through the filter screen after rethread secondary filter screen, when a filter screen blockked up, need directly use the secondary filter screen, the filter screen preparation of clearance simultaneously is in turn carried out with the secondary filter screen, because of plastics melt characteristic is strict to the filter time, often clean not reach then need change the net at once and carry out the filtration next time, give a great deal of inconvenience that filter work brought, and then influence the filter effect, influence the quality of product even. (2) The net structure of the filter screen slows down the flowing speed of the plastic melt, so that a part of the melt overflows out of the filter screen during filtering, which is not only waste of raw materials, but also directly influences the quality of products after the overflowing unfiltered melt is mixed into the filtered melt. (3) In the process of changing the net, the net is not preheated, residues are generated to cause the sand hole phenomenon of plastic products, and continuous production cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a constantly take and trade net device for solve the problem of mentioning among the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a constantly take and trade net device, connects device two parts including trade net ware body and board, specifically still includes:

the screen changer body is provided with a connecting frame, the outer side of the connecting frame is connected with a hydraulic cylinder or an air cylinder, the inner side of the connecting frame is connected with the plate connecting device, the inner side of the connecting frame is also provided with a fixed frame, one side of the fixed frame is inserted into the plate connecting device, the other side of the fixed frame is fixedly connected with a piston rod of the hydraulic cylinder or the air cylinder, four screens are movably connected in the fixed frame in sequence, the surfaces of the screens are square or rectangular, and the middle part of the screens is provided with a circular filtering channel consisting of a plurality of dense round holes;

the size of the plate connecting device just accommodates three plate nets, wherein the plate net in the middle is a filtering plate net, the plate nets on two sides are anti-overflow preheating plate nets, and the plate net outside the plate connecting device is a spare plate net; the central position of two corresponding sides of the plate connecting device is provided with a feeding channel and a discharging channel, the sizes of the feeding channel and the discharging channel are matched with the size of the filtering channel on the filtering plate net, and the circumferences of the bottoms of the feeding channel and the top of the discharging channel are provided with sealing structures. Wherein, the sealing structure can ensure that the material does not leak when the screen changing device is respectively connected with the machine barrel screw and the machine head.

Further, fixed frame is the rectangle, its with a side that the piston rod is connected is from the limit, and a side that corresponds with from the limit is spacing limit, spacing limit certainly wear out in the board connects the device, and follow spacing limit direction sets up a set of stopper, and when the piston rod moved that stretches out and draws back, the stopper will fixed frame position is spacing.

Furthermore, a set of corresponding clamping structures is arranged on two corresponding side edges of each plate net, and every two plate nets are movably connected together through the corresponding clamping structures.

Furthermore, the driven edge and one side adjacent to the plate net are provided with clamping grooves, and the limiting edge and one side adjacent to the plate net are provided with limiting bolts.

Furthermore, the clamping structure is a convex connecting block or a corresponding convex connecting groove.

Further, the heating box is arranged on the upper side face of the plate connecting device and connected with a heating pipe in the device through a circuit connecting plate, and the heating pipe is arranged at a position close to the anti-overflow preheating plate net.

Further, on the board connects the device, follow discharge channel's radial still is equipped with temperature monitoring devices, temperature detecting device can control the heating pipe guarantees to carry out real-time supervision to the material that filters, ensures that the temperature is suitable, the temperature of heating pipe can also be adjusted in temperature monitoring devices's setting.

Furthermore, the sealing structure is connected with the bottom of the feeding channel and the top of the discharging channel to form a cone connecting port, so that the plastic solution can be conveniently filtered.

The utility model has the advantages that:

(1) the utility model discloses a slab web adopts hardness and the special steel plate that intensity is high to make, be equipped with the filtration passageway of constituteing by a plurality of intensive round holes on the slab web, when filtering the plastics melt, the material is filtered by the filter slab web behind the feedstock channel of board-connected device, wherein, the slab web can be less than 80 mesh impurity filtration in the material, make the material guarantee good filtration quality, when being more and more easily blockking up the filter slab web along with impurity, start pneumatic cylinder or cylinder, make the piston rod extension preheat the slab web and release with one anti-overflow in the board-connected device, original filter slab web position and another preheat the slab web order change position, new filter slab web continues filtration work at this moment; the net can be changed for many times in a short time by stretching the piston rod, and continuous filtering work is carried out under the condition that the extruder is not stopped, so that continuous belts on a production line are ensured.

(2) The utility model discloses a four block of block nets filter, and as spare block net, three block nets among the board device are used respectively as in the block of board device outside: the middle part is filtered, and the two side plate nets ensure that the materials do not overflow, so that the materials in the discharging channel are filtered; the heating pipe is arranged at the position close to the anti-overflow preheating plate net, so that the plate net preheating function is realized, the material temperature is not influenced in the net changing process, and the product quality is further ensured.

(3) The driven edge and the limiting edge of the fixing frame are respectively provided with a clamping groove and a limiting bolt, so that the position of the plate net in the fixing frame can be fixed and the plate net is not easy to fall off; connect through corresponding "protruding" type connecting block or corresponding "protruding" type spread groove between the board net, ensure firm in connection between the board net, when needs trade the net simultaneously, the board net can be very fast take, convenient the change does not influence filterable efficiency.

Drawings

Fig. 1 is a front view structure diagram of the present invention.

Fig. 2 is a schematic view of the screen changer body of the present invention.

Fig. 3 is an enlarged view of the spare expanded metal portion of the present invention.

In the figure:

1-1, a connecting frame 1-2, a hydraulic cylinder 1-2a, a piston rod 1-3 and a fixing frame

1-3a, a driven edge 1-3b, a limit edge 1-3c, a clamping groove 1-3d and a limit block

1-3e, a limit bolt 1-4, a plate net 1-4a, a filtering channel 1-4b and a connecting groove

1-4c, a connecting block 2, a plate connecting device 2-1, a feeding channel 2-2 and a heating box

Detailed Description

The following detailed description of one embodiment of the present invention is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

The utility model discloses a: the screen changer comprises a screen changer body and a plate connecting device 2, wherein the screen changer body is provided with a connecting frame 1-1, the outer side of the connecting frame 1-1 is connected with a hydraulic cylinder 1-2, the inner side of the connecting frame 1-1 is fixedly connected with the plate connecting device 2, the inner side of the connecting frame 1-1 is also provided with a fixing frame 1-3, one side of a rectangular fixing frame 1-3 is inserted into the plate connecting device 2, the other side of the rectangular fixing frame 1-3 is fixedly connected with a piston rod 1-2a of the hydraulic cylinder 1-2, four plate nets 1-4 with square surfaces are sequentially clamped in the fixing frame 1-3, the middle part of the fixing frame is provided with a circular filtering channel 1-4a consisting of a plurality of intensive round holes, the plate connecting device 2 just contains three plate nets 1-4, the plate nets 1-4 at the middle position are filtering plate nets, the plate nets 1-4 at two side positions are subjected to anti-overflow preheating, the external plate net 1-4 of the plate connecting device 2 is a spare plate net, the central positions of two corresponding side surfaces of the plate connecting device 2 are provided with a feeding channel 2-1 and a discharging channel, and the sizes of the feeding channel 2-1 and the discharging channel are matched with the sizes of the filtering channels 1-4a on the filtering plate net; the two sides of the plate nets 1-4 are respectively provided with a convex connecting block 1-4c and a corresponding convex connecting groove 1-4b, every two plate nets 1-4 are respectively connected with the connecting groove 1-4b through a corresponding point connecting block 1-4c, the standby plate net is connected with the driven edge 1-3a through a clamping groove 1-3c, the first anti-overflow preheating plate net in the plate connecting device 2 is fixed with the limiting edge 1-3b through a limiting bolt 1-3e, and a group of limiting blocks 1-3d are arranged at the two ends of the limiting edge 1-3 b; the heating box 2-2 is arranged on the upper side face of the plate connecting device 2, the heating box 2-2 is connected with the heating pipe through a circuit, the heating pipe is placed in the plate connecting device 2, the position close to the overflow-preventing preheating plate net is arranged, a temperature monitoring device is further arranged along the radial direction of the discharging channel, the discharging temperature is monitored in real time through the temperature monitoring device, and the heating temperature of the heating pipe can be adjusted through the temperature monitoring device, so that the heating temperature is ensured to be proper.

The specific operation is as follows: when plastic melt filtration is carried out, materials enter from a feeding channel 2-1, the materials are filtered through a filter plate net in a plate connection device 2, four plate nets 1-4 made of special steel plates have the characteristics of high hardness and strength and small thermal deformation, and after impurities in the materials are filtered through the filter channels 1-4a in the filter plate net, the materials flow out through a discharge channel of the plate connection device 2; during filtering, the flow rate of the materials is slowed down due to the blocking of the plate nets 1-4, a part of the materials overflow, and the overflowing materials are intercepted by the overflow-preventing preheating plate nets on the two sides of the filtering plate nets, so that the materials flowing out of all the discharging channels are filtered; along with the proceeding of the filtering work, the impurities on the filter plate net become more, the filter passage 1-4a is easy to block, at the moment, the hydraulic cylinder 1-2 is started, the piston rod 1-2a is extended, the standby plate net is pushed into the plate connecting device 2 through the connected clamping grooves 1-3c, meanwhile, one overflow-proof preheating plate net in the plate connecting device 2 is pushed out, the positions of the filter plate net and the other overflow-proof preheating plate net are sequentially changed, at the moment, the plate net 1-4 corresponding to the feed passage 2-1 is the filter plate net after net replacement, and the overflow-proof preheating plate nets after net replacement are arranged on the two sides of the filter plate net; opening the limit bolts 1-3b, taking down the outer plate nets 1-4 of the plate connection device 2, cleaning and removing impurities, closing the hydraulic cylinder 1-2, shortening the piston rod 1-2a, changing the position of the fixing frame 1-3 connected with the piston rod 1-2a, manufacturing the plate nets 1-4 by using special steel plates, wherein the position of the plate nets 1-4 is not changed, at the moment, three plate nets 1-4 are still accommodated in the plate connection device 2, the position of the standby plate net before net replacement is changed into hollow, and connecting the cleaned plate nets 1-4 between the plate nets 1-4 and the driven edges 1-3a through the arranged connecting grooves 1-4b and connecting blocks 1-4c to become the standby plate net after net replacement; and repeating the operation when the screen needs to be changed again along with the filtering operation of the material.

Claims

1. The utility model provides a constantly take and trade net device, includes trade net ware body and board joint device two parts, its characterized in that: the screen changer body is provided with a connecting frame, the outer side of the connecting frame is connected with a hydraulic cylinder or an air cylinder, the inner side of the connecting frame is connected with the board connecting device, the inner side of the connecting frame is also provided with a fixed frame, one side of the fixed frame is inserted into the board connecting device, the other side of the fixed frame is fixedly connected with a piston rod of the hydraulic cylinder or the air cylinder, four screens are movably connected in the fixed frame in sequence, the surfaces of the screens are square or rectangular, a circular filtering channel is arranged at the middle position of the screens, and the filtering channel is positioned between a feeding channel and a discharging channel on the board connecting device;

the size of the plate connecting device just accommodates three plate nets, wherein the plate net in the middle is a filtering plate net, the plate nets on two sides are anti-overflow preheating plate nets, and the plate net outside the plate connecting device is a spare plate net; the central position of two corresponding sides of the plate connecting device is provided with a feeding channel and a discharging channel, the sizes of the feeding channel and the discharging channel are matched with the size of the filtering channel on the filtering plate net, and the circumferences of the bottoms of the feeding channel and the top of the discharging channel are provided with sealing structures.

2. The continuous belt screen changing device according to claim 1, wherein: the fixed frame is rectangular, one side edge of the fixed frame, which is connected with the piston rod, is a driven edge, one side edge corresponding to the driven edge is a limiting edge, and the limiting edge penetrates out of the plate connecting device and is arranged along the direction of the limiting edge.

3. The continuous belt screen changing device according to claim 1, wherein: a set of corresponding clamping structures are arranged on two corresponding side edges of the plate nets, and every two plate nets are movably connected together through the corresponding clamping structures.

4. The continuous belt screen changing device according to claim 2, wherein: the driven edge and one side adjacent to the plate net are provided with clamping grooves, and the limiting edge and one side adjacent to the plate net are provided with limiting bolts.

5. A continuous belt screen changer according to claim 3, wherein: the clamping structure is a convex connecting block or a corresponding convex connecting groove.

6. The continuous belt screen changing device according to claim 1, wherein: the heating box is connected with a heating pipe in the device through a circuit connecting plate, and the heating pipe is arranged at a position close to the anti-overflow preheating plate net.

7. The continuous belt screen changing device according to claim 6, wherein: and a temperature monitoring device is also arranged on the plate connecting device along the radial direction of the discharge channel, and the temperature of the heating pipe can be adjusted by the temperature monitoring device.

8. A continuous belt screen changer according to any one of claims 1 to 7, wherein: the sealing structure is connected with the bottom of the feeding channel and the top of the discharging channel to form a cone connecting port.