Special gear pump for extruder

Abstract

The utility model provides a special gear pump for an extruder. The special gear pump for the extruder comprises a base and a gear pump body arranged on the base, a mounting cover is arranged on the base, the mounting cover is composed of two L-shaped limiting plates and a limiting top plate, the two L-shaped limiting plates are arranged on the base and located on the two sides of the gear pump body respectively, the two L-shaped limiting plates are both matched with the gear pump body, and the limiting top plate is arranged on the base. And the limiting top plate is fixedly mounted at the tops of the two L-shaped limiting plates, a limiting groove is formed in the bottom of the limiting top plate, and the limiting groove is matched with the top of the gear pump body. According to the special gear pump for the extruder, through the cooperation of the mounting cover and the dismounting and mounting mechanism, the structure is simple, the gear pump main body can be limited and fixed by extruding and fixing the mounting cover, so that the operation is simple, the gear pump main body can be conveniently dismounted, mounted and replaced, and the working efficiency is improved. And convenience is provided for later maintenance and replacement.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear pumps, and in particular relates to a special gear pump for an extruder. Background Art

[0002] In the production of PVB interlayer film, the transportation of melt is inseparable from the gear pump. The general gear pump includes a pump body, a driving shaft, a driven shaft, bearings and seals.

[0003] A gear pump dedicated to a PVB extruder is disclosed in the utility model patent with announcement number CN 202338485 U. A driving shaft and a driven shaft installed on the side wall of the pump body are arranged in parallel in the pump body. The driving shaft and the driven shaft are both installed with mutually meshing booster gears. A liquid inlet cavity and a liquid outlet cavity are formed between the two mutually meshing booster gears and the inner wall of the pump body. A feed port is arranged on the side wall of the pump body of the liquid inlet cavity, and a discharge port is arranged on the side wall of the pump body of the liquid discharge cavity. The driving shaft extends out of the pump body and is connected to the driving shaft of the power equipment. The side walls of the pump body at the feed port and the discharge port are both provided with connecting screw holes. Due to the above structural features, the utility model has the advantages of simple structure, low cost, good sealing, high working efficiency, beautiful appearance, etc.

[0004] Regarding the above-mentioned related technologies, the utility model applicant believes that there are the following defects:

[0005] 1. Although the above-mentioned gear pump has the advantages of simple structure, low cost, good sealing, high working efficiency, beautiful appearance, etc., the gear pump is generally fixed by bolts or screws. However, this method is inconvenient for the later maintenance and disassembly of the gear pump because it is easy to slip and difficult to disassemble.

[0006] Therefore, it is necessary to provide a new special gear pump for extruder to solve the above-mentioned technical problems. Utility Model Content

[0007] The technical problem solved by the utility model is to provide a gear pump specially designed for an extruder, which has a simple structure by arranging a mounting cover and a disassembly and assembly mechanism. The gear pump body can be limited and fixed by squeezing and fixing the mounting cover, thereby making the operation simple, and the gear pump body can be easily disassembled, assembled and replaced, providing convenience for later maintenance and replacement.

[0008] In order to solve the above technical problems, the utility model provides a gear pump for an extruder, comprising: a base and a gear pump body arranged on the base, the base is provided with a mounting cover, the mounting cover is composed of two L-shaped limit plates and a limit top plate, the two L-shaped limit plates are respectively arranged on the base and located on both sides of the gear pump body, the two L-shaped limit plates are both adapted to the gear pump body, the limit top plate is fixedly installed on the top of the two L-shaped limit plates, the bottom of the limit top plate is provided with a limit groove, and the limit groove is adapted to the top of the gear pump body;

[0009] Two groups of mounting blocks are fixedly mounted on the top of the base. The two groups of mounting blocks are respectively located on both sides of the gear pump body. The two groups of mounting blocks are connected by two disassembly and assembly mechanisms and squeeze and fix the two L-shaped limit plates.

[0010] As a further solution of the present utility model, the number of mounting blocks in each group is two, the L-shaped limit plate is provided with two limit holes 1, the four limit holes 1 correspond to and match the four mounting blocks one by one, and the mounting block is provided with limit holes 2. The disassembly and assembly mechanism includes a hollow plug rod, three limit blocks 1, three limit blocks 2, a limit ring and a limit plug plate. The hollow plug rod passes through the two limit holes 2 on the corresponding two mounting blocks and matches the two limit holes 2, and the hollow plug rod is in contact with the L-shaped limit plate.

[0011] As a further solution of the utility model, three through ports 1 and three through ports 2 are provided on the disassembly and assembly mechanism, three limit blocks 1 are movably installed on the three through ports 1, and three limit blocks 2 are movably installed on the three through ports 2. The three limit blocks 1 are all adapted to the corresponding mounting blocks, and the three limit blocks 2 are all adapted to the corresponding mounting blocks. The limit ring is fixedly installed on the hollow plug rod, and a limit plug plate is slidably installed on the limit ring, and a concave groove is provided on the limit plug plate.

[0012] As a further solution of the utility model, the disassembly and assembly mechanism also includes a connecting rod, a fixed ring, a movable ring, a telescopic spring, a first extrusion column, a second extrusion column, an elastic column and an elastic block. The connecting rod is slidably installed in the hollow plug rod, the fixed ring is fixedly installed in the hollow plug rod, the fixed ring is slidably connected to the connecting rod, the movable ring is fixedly installed on the connecting rod, the movable ring is slidably connected to the hollow plug rod, the telescopic spring is slidably sleeved on the connecting rod, one end of the telescopic spring is fixedly connected to the fixed ring, and the other end of the telescopic spring is fixedly connected to the movable ring.

[0013] As a further solution of the utility model, the extrusion column 1 is slidably installed in the hollow plug rod, the extrusion column 1 is fixedly connected to the connecting rod, the extrusion column 1 is adapted to three limit blocks 1, the extrusion column 2 is slidably installed in the hollow plug rod, the extrusion column 2 is in contact with the other end of the connecting rod, the elastic column is slidably installed in the hollow plug rod, the elastic column is fixedly connected to the extrusion column 2, the elastic block is fixedly installed on the elastic column, the elastic block is adapted to the concave groove on the limit plug plate, and the extrusion column 2, the elastic column and the elastic block are all adapted to the limit ring.

[0014] As a further solution of the utility model, a plurality of fixing bolts are provided on the base.

[0015] Compared with the related art, the special gear pump for extruder provided by the utility model has the following beneficial effects:

[0016] 1. The utility model has a simple structure by arranging the installation cover and the disassembly mechanism. The gear pump body can be limited and fixed by squeezing the installation cover, which makes the operation simple and facilitates the disassembly and replacement of the gear pump body, providing convenience for later maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the disassembly and assembly mechanism in the utility model;

[0020] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the assembly of the L-shaped limiting plate and the limiting top plate in the utility model.

[0022] In the figure: 1. base; 2. gear pump body; 3. L-shaped limit plate; 4. limit top plate; 5. mounting block; 6. disassembly and assembly mechanism; 61. hollow plug rod; 62. limit block 1; 63. limit block 2; 64. limit ring; 65. limit plug plate; 66. connecting rod; 67. fixed ring; 68. movable ring; 69. telescopic spring; 70. extrusion column 1; 71. extrusion column 2; 72. elastic column; 73. elastic block; 8. fixing bolt. DETAILED DESCRIPTION

[0023] Please refer to Figures 1 to 4 ,in, Figure 1 It is a schematic diagram of the structure of the utility model; Figure 2 It is a structural schematic diagram of the disassembly and assembly mechanism in the utility model; Figure 3 This is a schematic diagram of the split structure of the utility model; Figure 4 It is an assembly diagram of the L-shaped limit plate and the limit top plate in the utility model. The gear pump dedicated to the extruder includes: a base 1 and a gear pump body 2 arranged on the base 1, the base 1 is provided with a mounting cover, the mounting cover is composed of two L-shaped limit plates 3 and a limit top plate 4, the two L-shaped limit plates 3 are respectively arranged on the base 1 and located on both sides of the gear pump body 2, the two L-shaped limit plates 3 are both adapted to the gear pump body 2, the limit top plate 4 is fixedly installed on the top of the two L-shaped limit plates 3, the bottom of the limit top plate 4 is provided with a limit groove, and the limit groove is adapted to the top of the gear pump body 2;

[0024] Two groups of mounting blocks 5 are fixedly mounted on the top of the base 1 . The two groups of mounting blocks 5 are respectively located on both sides of the gear pump body 2 . The two groups of mounting blocks 5 are connected by two disassembly and assembly mechanisms 6 and squeeze and fix the two L-shaped limit plates 3 .

[0025] The number of each group of mounting blocks 5 is two, the L-shaped limiting plate 3 is provided with two limiting holes 1, and the four limiting holes 1 correspond to and match the four mounting blocks 5 one by one, respectively. The mounting block 5 is provided with limiting hole 2, and the disassembly and assembly mechanism 6 includes a hollow plug rod 61, three limiting blocks 1 62, three limiting blocks 2 63, a limiting ring 64 and a limiting plug plate 65. The hollow plug rod 61 passes through the two limiting holes 2 on the corresponding two mounting blocks 5 and matches with the two limiting holes 2, and the hollow plug rod 61 contacts the L-shaped limiting plate 3.

[0026] The disassembly and assembly mechanism 6 is provided with three through-ports 1 and three through-ports 2, three limit blocks 1 62 are movably mounted on the three through-ports 1, three limit blocks 2 63 are movably mounted on the three through-ports 2, the three limit blocks 1 62 are all matched with the corresponding mounting blocks 5, the three limit blocks 2 63 are all matched with the corresponding mounting blocks 5, the limit ring 64 is fixedly mounted on the hollow plug rod 61, a limit plate 65 is slidably mounted on the limit ring 64, and a concave groove is provided on the limit plate 65.

[0027] The disassembly and assembly mechanism 6 also includes a connecting rod 66, a fixed ring 67, a movable ring 68, a telescopic spring 69, an extrusion column 1 70, an extrusion column 2 71, an elastic column 72 and an elastic block 73. The connecting rod 66 is slidably installed in the hollow plug rod 61, the fixed ring 67 is fixedly installed in the hollow plug rod 61, the fixed ring 67 is slidably connected to the connecting rod 66, the movable ring 68 is fixedly installed on the connecting rod 66, the movable ring 68 is slidably connected to the hollow plug rod 61, the telescopic spring 69 is slidably sleeved on the connecting rod 66, one end of the telescopic spring 69 is fixedly connected to the fixed ring 67, and the other end of the telescopic spring 69 is fixedly connected to the movable ring 68.

[0028] The extrusion column 70 is slidably installed in the hollow plug rod 61, and the extrusion column 70 is fixedly connected to the connecting rod 66. The extrusion column 70 is adapted to three limit blocks 62. The extrusion column 2 71 is slidably installed in the hollow plug rod 61. The extrusion column 2 71 contacts the other end of the connecting rod 66. The elastic column 72 is slidably installed in the hollow plug rod 61. The elastic column 72 is fixedly connected to the extrusion column 2 71. The elastic block 73 is fixedly installed on the elastic column 72. The elastic block 73 is adapted to the concave groove on the limit plug plate 65. The extrusion column 2 71, the elastic column 72 and the elastic block 73 are all adapted to the limit ring 64.

[0029] The base 1 is provided with a plurality of fixing bolts 8 .

[0030] The working principle of the special gear pump for extruder provided by the utility model is as follows:

[0031] The first step: when in use, the base 1 is fixedly installed on the specified position of the extruder by multiple fixing bolts 8, and then the gear pump body 2 is placed on the top of the base 1, and then the gear pump body 2 is covered by the cooperation of the limiting top plate 4 and the two L-shaped limiting plates 3, and at the same time the mounting block 5 passes through the limiting plug hole on the L-shaped limiting plate 3, and then the hollow plug rod 61 passes through the limiting plug hole 2 on the corresponding two mounting blocks 5 (the limiting block 1 62 and the limiting block 2 63 need to be received in the through port 1 and the through port 2 at this time), and the L-shaped limiting plate 3 is squeezed by the hollow plug rod 61 so that it passes through the cooperation of the two L-shaped limiting plates 3 and the limiting top plate 4 to limit and fix the gear pump body 2, so that the limiting ring 64 contacts the corresponding mounting block 5, and then the extrusion column 2 71, the elastic column 72 and the elastic block 73 pass through the limiting ring 64 and are inserted into the hollow plug rod 61, and then the connecting rod 66 is squeezed by the extrusion column 2 71, and the connecting rod 66 is squeezed The movable ring 68 and the extrusion column 1 70 are driven to move, and then the three limit stops 1 62 and the three limit stops 2 63 are squeezed by the extrusion column 1 70 and the extrusion column 2 71, so that the limit stops 1 62 and the limit stops 2 63 leak out through the through openings 1 and 2 and contact the corresponding two mounting blocks 5. Then the limit plug plate 65 is slidably installed on the limit ring 64, and at the same time, the elastic block 73 is inserted into the concave groove on the limit plug plate 65 due to elastic extrusion. Moreover, because the movable ring 68 compresses the telescopic spring 69 when moving, the telescopic spring 69, the elastic column 72 and the elastic block 73 cooperate to squeeze the limit plug plate 65, so that the limit plug plate 65 can be prevented from falling off easily, making the structure simple, and the gear pump body 2 can be limited and fixed by squeezing and fixing the mounting cover, which makes the operation simple, and can be convenient for disassembling and replacing the gear pump body 2, which provides convenience for later maintenance and replacement.

[0032] The second step: when disassembling the gear pump body 2, pull out the limit plug plate 65, then pull out the elastic block 73, and drive the elastic column 72 and the extrusion column 2 71 to separate from the hollow plug rod 61 and the limit ring 64 through the elastic block 73. At this time, under the elastic action of the telescopic spring 69, the connecting rod 66 can be reset. Therefore, in the absence of the extrusion action of the extrusion column 1 70 and the extrusion column 2 71, the hollow plug rod 61 can be pulled out. During the process of pulling out the hollow plug rod 61, the limit block 1 62 and the limit block 2 63 will be received in the through port 1 and the through port 2, thereby completing the disassembly work.

[0033] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0034] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0035] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A gear pump for extruder, characterized in that: include: A base and a gear pump body arranged on the base, wherein the base is provided with a mounting cover, and the mounting cover is composed of two L-shaped limit plates and a limit top plate, the two L-shaped limit plates are respectively arranged on the base and located on both sides of the gear pump body, the two L-shaped limit plates are both adapted to the gear pump body, the limit top plate is fixedly installed on the top of the two L-shaped limit plates, and a limit groove is provided at the bottom of the limit top plate, and the limit groove is adapted to the top of the gear pump body; Two groups of mounting blocks are fixedly mounted on the top of the base. The two groups of mounting blocks are respectively located on both sides of the gear pump body. The two groups of mounting blocks are connected by two disassembly and assembly mechanisms and squeeze and fix the two L-shaped limit plates.

2. The extruder-specific gear pump according to claim 1, characterized in that: The number of each group of mounting blocks is two, the L-shaped limiting plate is provided with two limiting holes 1, the four limiting holes 1 correspond to and match the four mounting blocks one by one, the mounting block is provided with limiting holes 2, the disassembly and assembly mechanism includes a hollow plug rod, three limiting blocks 1, three limiting blocks 2, a limiting ring and a limiting plug plate, the hollow plug rod passes through the two limiting holes 2 on the corresponding two mounting blocks and matches with the two limiting holes 2, and the hollow plug rod is in contact with the L-shaped limiting plate.

3. The extruder-specific gear pump according to claim 2, characterized in that: The disassembly and assembly mechanism is provided with three through-ports 1 and three through-ports 2, three limit blocks 1 are movably mounted on the three through-ports 1, and three limit blocks 2 are movably mounted on the three through-ports 2. The three limit blocks 1 are all matched with corresponding mounting blocks, and the three limit blocks 2 are all matched with corresponding mounting blocks. The limit ring is fixedly mounted on the hollow plug rod, and a limit plug plate is slidably mounted on the limit ring, and a concave groove is provided on the limit plug plate.

4. The gear pump for extruder according to claim 2, characterized in that: The disassembly and assembly mechanism also includes a connecting rod, a fixed ring, a movable ring, a telescopic spring, a first extrusion column, a second extrusion column, an elastic column and an elastic block. The connecting rod is slidably installed in the hollow plug rod, the fixed ring is fixedly installed in the hollow plug rod, the fixed ring is slidably connected to the connecting rod, the movable ring is fixedly installed on the connecting rod, the movable ring is slidably connected to the hollow plug rod, the telescopic spring is slidably sleeved on the connecting rod, one end of the telescopic spring is fixedly connected to the fixed ring, and the other end of the telescopic spring is fixedly connected to the movable ring.

5. The gear pump for extruder according to claim 4, characterized in that: The extrusion column 1 is slidably installed in the hollow plug rod, the extrusion column 1 is fixedly connected to the connecting rod, the extrusion column 1 is adapted to three limit blocks 1, the extrusion column 2 is slidably installed in the hollow plug rod, the extrusion column 2 is in contact with the other end of the connecting rod, the elastic column is slidably installed in the hollow plug rod, the elastic column is fixedly connected to the extrusion column 2, the elastic block is fixedly installed on the elastic column, the elastic block is adapted to the concave groove on the limit plug plate, and the extrusion column 2, the elastic column and the elastic block are all adapted to the limit ring.

6. The gear pump for extruder according to claim 1, characterized in that: A plurality of fixing bolts are arranged on the base.

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