Glass fiber reinforced plastic impeller for pump

Abstract

The utility model discloses a glass fiber reinforced plastic impeller for a pump, which belongs to the technical field of impellers and comprises a seat disc, a plurality of dovetail grooves are arranged in the middle of the seat disc, a pump shaft is inserted among the dovetail grooves, a sleeve is fixedly mounted in the middle of the outer wall of one end of the seat disc, and a plurality of equidistant mounting sleeves are fixedly mounted at one end of the circumference of the sleeve. When one impeller blade needs to be replaced, the plug-in unit is rotated and taken down, then the cover plate is pulled out from one ends of the guide columns, the nut corresponding to the impeller blade is rotated, the positioning assembly is pulled out, and then the impeller blade can be taken down from the base disc and replaced. Due to the fact that the dovetail grooves are formed in the middle of the seat disc, the locking shaft fixedly arranged at one end of the circumference of the pump shaft is provided with the dovetail blocks and the threaded grooves, the plug-in unit is taken down through rotation, then the seat disc, the wheel blades and the cover plate are integrally replaced, and the tedious work of replacing a single wheel blade is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of impellers, in particular to a glass fiber reinforced plastic impeller for a pump. Background Art

[0002] FRP, or fiber reinforced plastic, generally refers to reinforced plastics that use glass fiber to reinforce unsaturated polyester, epoxy resin and phenolic resin matrices, and use glass fiber or its products as reinforcing materials. It is called glass fiber reinforced plastic or FRP. It has the excellent properties of light and hard, non-conductive, stable performance, high mechanical strength, less recycling, and corrosion resistance. Pump products are one of the important general mechanical products in various fields of the national economy, and centrifugal pumps are widely used for their high efficiency and large flow. The core structure of a centrifugal pump is the combination of an impeller and a liquid guide cover. As a fluid power transmission device, it greatly determines the efficiency and performance of the pump. FRP centrifugal pumps are mainly used in petrochemical, smelting, dyes, printing and dyeing, pesticides, pharmaceuticals, rare earths, leather and other industries.

[0003] After searching, the patent publication number CN209976875U discloses a patent named a glass fiber reinforced plastic centrifugal pump impeller. The technical problem to be solved is that the glass fiber reinforced plastic centrifugal pumps on the market generally have a complex internal structure, and the failure rate of the centrifugal pump is prone to increase after long-term work. Five positioning rods are arranged on the outer wall of the bearing, so that the ends of the rods extend into the mounting groove, and the bolts are used to tighten the positioning rods. Limit blocks are arranged in the mounting groove to achieve the positioning and fixing of the positioning rods while achieving the shock-absorbing effect of the ends of the positioning rods, extending its service life while facilitating the maintenance of the component. The two ends of the impeller disc are arranged in the bearing through a linkage shaft to improve the stability of the blades when working; but there are still the following disadvantages that need to be solved: the impeller body is damaged after long-term use or the impellers at different angles are replaced to change the flow or head of the centrifugal pump, and it is too cumbersome to replace the impeller. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a glass fiber reinforced plastic impeller for a pump.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fiberglass impeller for a pump comprises a seat plate, a plurality of dovetail grooves are provided in the middle of the seat plate, and a pump shaft is inserted between the plurality of dovetail grooves, a sleeve is fixedly installed in the middle of the outer wall at one end of the seat plate, and a plurality of mounting sleeves with equal distances are fixedly installed at one end of the circumference of the sleeve, a wheel blade is rotatably provided on the inner side of each mounting sleeve, a cover plate is provided on the outer side of one end of the seat plate, a plurality of first through holes with equal angles are provided in the middle of the seat plate, a plurality of second through holes with equal angles are provided in the middle of the cover plate, a positioning assembly is inserted between the first through holes and the second through holes in each column and the wheel blades, an inlay groove is provided in the middle of one end of the cover plate, and a plug-in is inserted between the inlay groove and the sleeve.

[0007] Preferably, a locking shaft is fixedly provided at one end of the pump shaft circumference, and a plurality of dovetail blocks are provided on the outer side of the locking shaft circumference, a threaded groove is provided in the middle of one end of the locking shaft, and the locking shaft diameter is smaller than the pump shaft diameter.

[0008] Preferably, the positioning assembly includes an insertion rod, and a guide column is fixedly installed at one end of the insertion rod, a plurality of arc-shaped protrusions with equal angles are provided on the circumferential outer wall of the insertion rod, a second thread is provided at the other circumferential end of the insertion rod, the guide columns in each row are slidably inserted into the second through holes, a nut is rotatably sleeved on the other end of the circumference of the insertion rod, and the nut is located at the other end of the seat plate.

[0009] Preferably, a third through hole is opened on the inner side of the blade, and an arc-shaped groove is provided on the circumferential inner wall of the third through hole, and the arc-shaped groove matches the arc-shaped protrusion.

[0010] Preferably, the plug-in includes a plug-in column, and a first thread is provided on one end of the plug-in column. A connecting column is fixedly installed at one end of the plug-in column. The connecting column is located inside the sleeve. An anti-slip plate is fixedly installed at one end of the connecting column, and the anti-slip plate matches the inlay groove.

[0011] Preferably, the positioning components in each row and the first through holes and the second through holes are located on the same axis.

[0012] Preferably, the plug-in unit and the pump shaft, seat plate, sleeve and cover plate are all located on the same axis.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a glass fiber reinforced plastic impeller for a pump, in which the impeller is installed and locked between the installation sleeve and the seat disc through a positioning component, and the cover plate is installed by limiting the position of a plurality of guide posts of the positioning component, and the plug-in is rotatably sleeved with the pump shaft to lock the cover plate. When it is necessary to replace one of the impellers, the plug-in is rotated and removed, and then the cover plate is pulled out from one end of the plurality of guide posts, and then the nut corresponding to the impeller is rotated and the positioning component is pulled out, and then the impeller can be removed from the seat disc and replaced. When it is necessary to replace the impeller to change the head or flow rate, since a plurality of dovetail grooves are provided in the middle of the seat disc, a locking shaft fixedly arranged at one end of the circumference of the pump shaft is provided with a plurality of dovetail blocks and threaded grooves, the plug-in is rotated and removed first, and then the seat disc, the plurality of impellers and the cover plate are replaced as a whole, thereby avoiding the tedious work of single replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a glass fiber reinforced plastic impeller for a pump proposed by the utility model;

[0016] Figure 2 This is a rear structural schematic diagram of a glass fiber reinforced plastic impeller seat disc for a pump proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a glass fiber reinforced plastic impeller seat disc for a pump proposed by the utility model;

[0018] Figure 4 The utility model is a structural schematic diagram of a glass fiber reinforced plastic impeller positioning assembly for a pump.

[0019] In the figure: 1 seat plate, 2 sleeve, 3 mounting sleeve, 4 impeller, 5 first through hole, 6 dovetail groove, 7 nut, 8 pump shaft, 9 positioning assembly, 10 cover plate, 11 second through hole, 12 inlay groove, 13 plug column, 14 connecting column, 15 anti-slip plate, 16 plug rod, 17 arc-shaped protrusion, 18 second thread, 19 guide column. DETAILED DESCRIPTION

[0020] Reference Figure 1-4 A glass fiber reinforced plastic impeller for a pump comprises a seat disc 1, a plurality of dovetail grooves 6 are provided in the middle of the seat disc 1, and a pump shaft 8 is inserted between the plurality of dovetail grooves 6, a sleeve 2 is fixedly installed in the middle of the outer wall at one end of the seat disc 1, and a plurality of mounting sleeves 3 with equal distances are fixedly installed at one end of the circumference of the sleeve 2, a vane 4 is rotatably arranged on the inner side of each mounting sleeve 3, a cover plate 10 is provided on the outer side of one end of the seat disc 1, and a plurality of first through holes 5 with equal angles are provided in the middle of the seat disc 1, a plurality of second through holes 11 with equal angles are provided in the middle of the cover plate 10, a positioning assembly 9 is inserted between the first through holes 5 and the second through holes 11 in each column and the vanes 4, an inlay groove 12 is provided in the middle of one end of the cover plate 10, and a plug-in is inserted between the inlay groove 12 and the sleeve 2.

[0021] In the utility model, a locking shaft is fixedly arranged at one end of the circumference of the pump shaft 8, and a plurality of dovetail blocks are arranged on the outer side of the circumference of the locking shaft. A threaded groove is opened in the middle of one end of the locking shaft, and the diameter of the locking shaft is smaller than the diameter of the pump shaft 8;

[0022] The positioning assembly 9 includes an insertion rod 16, and a guide column 19 is fixedly installed at one end of the insertion rod 16, a plurality of arc-shaped protrusions 17 of equal angles are arranged on the outer wall of the circumference of the insertion rod 16, and a second thread 18 is arranged at the other end of the circumference of the insertion rod 16, and each row of guide columns 19 is slidably plugged with the second through hole 11, and a nut 7 is rotatably sleeved at the other end of the circumference of the insertion rod 16, and the nut 7 is located at the other end of the seat plate 1;

[0023] A third through hole is provided inside the blade 4, and an arc-shaped groove is provided on the inner wall of the circumference of the third through hole, and the arc-shaped groove matches the arc-shaped protrusion 17;

[0024] The plug-in includes a plug-in column 13, and a first thread is provided at one end of the plug-in column 13, a connecting column 14 is fixedly installed at one end of the plug-in column 13, the connecting column 14 is located inside the sleeve 2, and an anti-slip plate 15 is fixedly installed at one end of the connecting column 14, and the anti-slip plate 15 matches the inlay groove 12;

[0025] The positioning components 9 of each row and the first through holes 5 and the second through holes 11 are all located on the same axis;

[0026] The plug-in unit, the pump shaft 8, the seat plate 1, the sleeve 2 and the cover plate 10 are all located on the same axis.

[0027] Working principle: The impeller 4 is installed and locked between the mounting sleeve 3 and the seat disc 1 through the positioning component 9, and the cover plate 10 is limited and installed by the multiple guide columns 19 of the positioning component 9. The plug-in is rotated and sleeved with the pump shaft 8 to lock the cover plate 10. When one of the impellers 4 needs to be replaced, the plug-in is rotated and removed, and then the cover plate 10 is pulled out from one end of the multiple guide columns 19, and then the nut 7 corresponding to the impeller 4 is rotated and the positioning component 9 is pulled out, and then the impeller 4 can be removed from the seat disc 1 and replaced. When the impeller needs to be replaced to change the head or flow rate, since a plurality of dovetail grooves 6 are provided in the middle of the seat disc 1, a locking shaft fixedly arranged at one end of the circumference of the pump shaft 8 is provided with a plurality of dovetail blocks and threaded grooves, first rotate to remove the plug-in, and then replace the seat disc 1, the plurality of impellers 4 and the cover plate 10 as a whole, avoiding the tedious work of single replacement.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A glass fiber reinforced plastic impeller for a pump, comprising a seat plate (1), wherein a plurality of dovetail grooves (6) are provided in the middle of the seat plate (1), and a pump shaft (8) is inserted between the plurality of dovetail grooves (6), characterized in that: A sleeve (2) is fixedly mounted in the middle of the outer wall at one end of the seat disc (1), and a plurality of mounting sleeves (3) are fixedly mounted at an equal distance at one end of the circumference of the sleeve (2), and a blade (4) is rotatably mounted inside each mounting sleeve (3). A cover plate (10) is arranged on the outer side of one end of the seat disc (1), and a plurality of first through holes (5) with equal angles are opened in the middle of the seat disc (1), and a plurality of second through holes (11) with equal angles are opened in the middle of the cover plate (10), and a positioning assembly (9) is inserted between the first through holes (5) and the second through holes (11) in each row and the blades (4). An inlay groove (12) is opened in the middle of one end of the cover plate (10), and a plug-in is inserted between the inlay groove (12) and the sleeve (2).

2. A glass fiber reinforced plastic impeller for a pump according to claim 1, characterized in that: A locking shaft is fixedly arranged at one end of the circumference of the pump shaft (8), and a plurality of dovetail blocks are arranged on the outer side of the circumference of the locking shaft. A threaded groove is provided in the middle of one end of the locking shaft, and the diameter of the locking shaft is smaller than the diameter of the pump shaft (8).

3. A glass fiber reinforced plastic impeller for a pump according to claim 1, characterized in that: The positioning assembly (9) comprises an insertion rod (16), and a guide column (19) is fixedly mounted on one end of the insertion rod (16), a plurality of arc-shaped protrusions (17) with equal angles are arranged on the circumferential outer wall of the insertion rod (16), a second thread (18) is arranged on the circumferential other end of the insertion rod (16), the guide columns (19) of each row are slidably plugged into the second through holes (11), a nut (7) is rotatably sleeved on the circumferential other end of the insertion rod (16), and the nut (7) is located on the other end of the seat plate (1).

4. A glass fiber reinforced plastic impeller for a pump according to claim 3, characterized in that: A third through hole is provided on the inner side of the blade (4), and an arc-shaped groove is provided on the circumferential inner wall of the third through hole, wherein the arc-shaped groove matches the arc-shaped protrusion (17).

5. The glass fiber reinforced plastic impeller for a pump according to claim 1, characterized in that: The plug-in unit comprises an insertion column (13), and a first thread is provided at one end of the circumference of the insertion column (13); a connecting column (14) is fixedly mounted at one end of the insertion column (13); the connecting column (14) is located inside the sleeve (2); an anti-slip plate (15) is fixedly mounted at one end of the connecting column (14), and the anti-slip plate (15) matches the inlay groove (12).

6. A glass fiber reinforced plastic impeller for a pump according to claim 1, characterized in that: The positioning components (9) in each row and the first through holes (5) and the second through holes (11) are all located on the same axis.

7. The glass fiber reinforced plastic impeller for a pump according to claim 1, characterized in that: The plug-in unit, the pump shaft (8), the seat plate (1), the sleeve (2), and the cover plate (10) are all located on the same axis.

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