Filter cartridge for casting rear box body of gearbox of wind generating set

Abstract

The utility model relates to the technical field of casting filtering, in particular to a filtering box for casting a rear box body of a gearbox of a wind generating set, which comprises a back-flushing plate, a conical material hole is arranged in the middle of the upper end of the back-flushing plate, the upper end of the back-flushing plate is connected with a feeding pipe, and a feeding nozzle is arranged at the upper end of the feeding pipe. Compared with the prior art, the filter device has the advantages that the filter device is reasonable in structural design, sand included in molten iron can be filtered through three surfaces of the triangular filter sheet made of the foamed ceramic material, the filtering effect of the filter device is effectively improved, and the filter device is convenient to use and high in practicability. The problem that a traditional square or round standard part filtering piece is blocked easily due to the fact that only one filtering face is used for filtering is avoided, the influence on the filtering effect is effectively avoided, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a filter box for casting the rear box body of a wind turbine gearbox. Background Technique

[0002] A wind turbine includes a wind wheel, a generator, a generator base, a gearbox, etc. The gearbox is an important component of a wind turbine and is currently basically made by casting.

[0003] After the production of large cast iron parts, such as the gearbox of a wind turbine, slag inclusion defects will appear on the surface of the casting. These defects greatly reduce the continuity and surface mechanical strength of the gearbox, and in severe cases, through cracks will occur. In order to solve the problems of the limitation of the special product space and the slag inclusion of the product in the production process of this casting process, currently, foam ceramic filter plates, which are usually standard parts in square or circular shapes, are used. However, the existing filter plates have poor filtering effects, resulting in sand inclusion. Therefore, we provide a filter box for casting the rear box body of a wind turbine gearbox to solve this problem. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the defects existing in the prior art and provide a filter box for casting the rear box body of a wind turbine gearbox.

[0005] To achieve the above purpose, the technical solution of the utility model is to design a filter box for casting the rear box body of a wind turbine gearbox, including a backwashing plate. A conical material hole is arranged in the middle of the upper end of the backwashing plate. The upper end of the backwashing plate is connected to a feed pipe, and a feed nozzle is installed at the upper end of the feed pipe. A first sealing groove is arranged at the lower end of the backwashing plate, and a filter box is clamped in the inner cavity of the first sealing groove.

[0006] The filter box includes a box body clamped in the inner cavity of the first sealing groove. Three mounting plates are integrally installed on the outer side of the box body, and the mounting plates are all located in the inner cavity of the first sealing groove. The backwashing plate is screwed to the three mounting plates through bolts. A bottom plate is screwed to the lower end of the box body. A second filtering component is arranged between the bottom plate and the box body. A first filtering component is installed at the upper end of the bottom plate. A threaded groove is arranged in the middle of the upper end of the bottom plate, and a precipitation component is screwed in the inner cavity of the threaded groove.

[0007] A further preferably technical solution is that the second filtering component includes an upper support frame and a triangular filter plate. The upper support frame is arranged in the inner cavity of the box body. The lower end of the upper support frame is connected to the triangular filter plate, and the lower end of the triangular filter plate is connected to a lower support frame. The triangular filter plate is made of foam ceramic material.

[0008] A further preferred technical solution is that a second sealing groove for clamping with the lower support frame is provided at the upper end of the bottom plate, and three limiting blocks are integrally connected to the outer side of the bottom plate, and the limiting blocks are located outside the box body.

[0009] A further preferred technical solution is that a third sealing groove for clamping with the upper support frame is provided at the top of the inner cavity of the box body, and three groups of limiting grooves are provided on the inner wall of the box body, and the three groups of limiting grooves are inserted with the second filtering component.

[0010] A further preferred technical solution is that the precipitation component includes a precipitation seat screwed to the threaded groove, a sealing ring plate is integrally installed on the outer side of the precipitation seat, a clamping groove for clamping with it is provided at the lower end of the bottom plate, a precipitation ring box is connected to the upper part of the inner cavity of the precipitation seat, and a spacer sleeve is integrally connected to the upper end of the precipitation ring box.

[0011] A further preferred technical solution is that the first filtering component includes a filtering cover installed at the upper end of the bottom plate, an inner sleeve is connected to the inner side of the filtering cover, a feeding hopper is connected to the upper end of the filtering cover, the feeding hopper corresponds to the position of the inner sleeve, the filtering cover is made of ceramic material, a plurality of mesh holes are provided on the outer side of the filtering cover, and the spacer sleeve is located between the filtering cover and the inner sleeve.

[0012] The advantages and beneficial effects of the present utility model are as follows: 1. After the molten iron enters the precipitation seat, part of the sand in the molten iron precipitates to the bottom of the inner cavity of the precipitation seat. When the molten iron overflows the spacer sleeve and enters between the spacer sleeve and the filtering cover, the molten iron overflows to the precipitation ring box. When the precipitation ring box is filled with molten iron, the molten iron overflows and is filtered and discharged from the mesh holes on the outer side of the filtering cover. And part of the sand in the molten iron precipitates in the precipitation ring box, further effectively filtering and precipitating the larger sand, avoiding the subsequent second filtering component from being easily blocked when filtering sands of different sizes, affecting the filtering effect of removing sand, and effectively improving the filtering effect, avoiding the excessive sand content in the cast product, effectively avoiding affecting its product quality, and improving the use effect;

[0013] 2. By designing the triangular filter sheet made of foam ceramic material, it has three surfaces that can filter the sand in the molten iron, effectively improving its filtering effect, avoiding the traditional square or circular standard filter sheet, which is easily blocked with only one filtering surface for filtering, effectively avoiding affecting the filtering effect, and improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is the overall split three-dimensional structure diagram of the present utility model;

[0016] Figure 3 Schematic diagram of the three-dimensional structure of the half-section view of the backflush plate proposed by the present utility model;

[0017] Figure 4 Schematic diagram of the three-dimensional structure of the bottom view of the backflush plate proposed by the present utility model;

[0018] Figure 5 Schematic diagram of the three-dimensional structure of the bottom view of the box body proposed by the present utility model;

[0019] Figure 6 Schematic diagram of the three-dimensional structure of the split of the filter box and the second filter component proposed by the present utility model.

[0020] Figure 7 Schematic diagram of the three-dimensional structure of the bottom view of the bottom plate proposed by the present utility model;

[0021] Figure 8 Schematic diagram of the three-dimensional structure of the partial section view and split of the precipitation component and the first filter component proposed by the present utility model;

[0022] Figure 9 Schematic diagram of the three-dimensional structure of the half-section view of the precipitation component and the first filter component proposed by the present utility model.

[0023] In the figure: 1. Backflush plate; 2. Conical material hole; 3. Feed pipe; 4. Feed nozzle; 5. Filter box; 51. Box body; 52. Mounting plate; 53. Bottom plate; 54. Second sealing groove; 55. Limiting block; 56. Third sealing groove; 57. Limiting groove; 58. Threaded groove; 59. Card slot; 6. Second filter component; 61. Upper support frame; 62. Triangular filter sheet; 63. Lower support frame; 7. Precipitation component; 71. Precipitation seat; 72. Sealing ring plate; 73. Precipitation ring box; 74. Spacer sleeve; 8. First filter component; 81. Filter cover; 82. Inner sleeve; 9. First sealing groove; 10. Feed hopper. Specific embodiments

[0024] The following combines the drawings and embodiments to further describe the specific embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0025] Refer to Figures 1-9 , A filter box for casting the rear box body of a wind turbine gearbox, including a backflush plate 1, a conical material hole 2 is provided in the middle of the upper end of the backflush plate 1, the upper end of the backflush plate 1 is connected to a feed pipe 3, and a feed nozzle 4 is installed at the upper end of the feed pipe 3.

[0026] The lower end of the recoil plate 1 is provided with a first sealing groove 9, and a filter box 5 is clamped in the inner cavity of the first sealing groove 9. The filter box 5 includes a box body 51 clamped in the inner cavity of the first sealing groove 9. Three mounting plates 52 are integrally installed on the outer side of the box body 51. The mounting plates 52 are all located in the inner cavity of the first sealing groove 9. The recoil plate 1 is screwed to the three mounting plates 52 by bolts. The lower end of the box body 51 is screwed with a bottom plate 53, and a second filtering component 6 is arranged between the bottom plate 53 and the box body 51.

[0027] The second filtering component 6 includes an upper support frame 61 and a triangular filter sheet 62. The upper support frame 61 is arranged in the inner cavity of the box body 51. The lower end of the upper support frame 61 is connected to the triangular filter sheet 62. The lower end of the triangular filter sheet 62 is connected to a lower support frame 63. The triangular filter sheet 62 is made of foam ceramic material.

[0028] Through the designed triangular filter sheet 62 made of foam ceramic material, it has three surfaces that can filter the sand in the molten iron, effectively improving its filtering effect and avoiding the traditional square or circular standard filter sheet with only one filtering surface, which is prone to blockage and affects the filtering effect.

[0029] The upper end of the bottom plate 53 is provided with a second sealing groove 54 that is clamped with the lower support frame 63. Three limiting blocks 55 are integrally connected to the outer side of the bottom plate 53. The limiting blocks 55 are located on the outer side of the box body 51. The top of the inner cavity of the box body 51 is provided with a third sealing groove 56 that is clamped with the upper support frame 61. Three limiting grooves 57 are arranged on the inner wall of the box body 51, and the three limiting grooves 57 are inserted into the second filtering component 6.

[0030] Through the second sealing groove 54 at the upper end of the bottom plate 53 and the third sealing groove 56 at the top of the inner cavity of the box body 51, they are respectively sealed and clamped with the lower support frame 63 and the upper support frame 61, effectively improving the tight installation effect of the second filtering component 6. And through the designed limiting grooves 57, it is convenient to effectively limit the second filtering component 6, improving its installation stability. And through the limiting blocks 55 on the outer side of the bottom plate 53, the box body 51 is effectively wrapped and the bottom plate 53 is limited, improving the installation firmness of the bottom plate 53.

[0031] The first filtering component 8 is installed on the upper end of the bottom plate 53. The first filtering component 8 includes a filter cover 81 installed on the upper end of the bottom plate 53. The inner side of the filter cover 81 is connected with an inner sleeve 82. The upper end of the filter cover 81 is connected with a feed hopper 10. The feed hopper 10 corresponds to the position of the inner sleeve 82. The filter cover 81 is made of ceramic material. A number of mesh holes are arranged on the outer side of the filter cover 81. A spacer sleeve 74 is located between the filter cover 81 and the inner sleeve 82.

[0032] Molten iron directly enters the material guiding hopper 10 from the conical material hole 2, then enters the inner cavity of the inner sleeve 82, and then the molten iron is introduced into the sedimentation seat 71 of the sedimentation assembly 7 to effectively sediment some of the sand in the molten iron. Subsequently, it is preliminarily filtered through the filter cover 81 made of foam ceramic material. The aperture of the outer mesh holes of the filter cover 81 is larger than that of the triangular filter piece 62, which is convenient for filtering larger sand grains and avoiding clogging when the subsequent second filter assembly 6 filters sand grains of different sizes, thus affecting the effect of filtering sand.

[0033] In the middle of the upper end of the bottom plate 53, there is a threaded groove 58. The inner cavity of the threaded groove 58 is screwed with the sedimentation assembly 7. The sedimentation assembly 7 includes a sedimentation seat 71 screwed with the threaded groove 58. A sealing ring plate 72 is integrally installed on the outer side of the sedimentation seat 71. A clamping groove 59 is provided at the lower end of the bottom plate 53 and is clamped with it. The upper part of the inner cavity of the sedimentation seat 71 is connected with a sedimentation ring box 73, and a spacer sleeve 74 is integrally connected to the upper end of the sedimentation ring box 73.

[0034] After the molten iron enters the sedimentation seat 71 through the inner sleeve 82, it spreads upward and enters the space between the spacer sleeve 74 and the inner sleeve 82. At this time, it is convenient for some of the sand in the molten iron to settle to the bottom of the inner cavity of the sedimentation seat 71. Then, when the molten iron overflows the spacer sleeve 74 and enters the space between the spacer sleeve 74 and the filter cover 81, part of the molten iron is directly discharged after being filtered through the mesh holes on the outer side of the filter cover 81. Part of the molten iron overflows into the sedimentation ring box 73. When the sedimentation ring box 73 is filled with molten iron, the molten iron overflows and is then filtered and discharged through the mesh holes on the outer side of the filter cover 81. Some of the sand in the molten iron precipitates in the sedimentation ring box 73, further effectively filtering and sedimenting larger sand grains, effectively improving the filtering effect, avoiding excessive sand inclusion in the cast product and affecting its product quality. Moreover, the sedimentation assembly 7 is convenient for screwing installation and disassembly, facilitating the cleaning of the sedimented sand and being easy to use.

[0035] Working principle: When in use, the molten iron of the present utility model is introduced from the feeding nozzle 4, and then the molten iron flows from the feeding pipe 3 into the conical material hole 2 at the upper end of the backwashing plate 1, and then enters the material guiding hopper 10, and then enters the inner cavity of the inner sleeve 82, and then the molten iron is introduced into the sedimentation seat 71 of the sedimentation assembly 7. After the molten iron enters the sedimentation seat 71 through the inner sleeve 82, it spreads upward and enters the space between the spacer sleeve 74 and the inner sleeve 82. At this time, it is convenient for some sand in the molten iron to precipitate to the bottom of the inner cavity of the sedimentation seat 71. Then, when the molten iron overflows the spacer sleeve 74 and enters the space between the spacer sleeve 74 and the filter cover 81, part of the molten iron is directly discharged after being filtered through the mesh holes on the outer side of the filter cover 81, and part of the molten iron overflows to the sedimentation ring box 73. When the sedimentation ring box 73 is filled with molten iron, the molten iron overflows and is then filtered and discharged through the mesh holes on the outer side of the filter cover 81. And part of the sand in the molten iron precipitates in the sedimentation ring box 73, further effectively filtering and precipitating the larger sand, avoiding the subsequent second filtering component 6 from being easily blocked when filtering sand of different sizes, affecting the filtering effect of removing sand, and effectively improving the filtering effect, avoiding the excessive amount of sand in the product after casting, which affects the product quality. Then, through the triangular filter piece 62 made of the designed foam ceramic material, which has three surfaces to filter the sand in the molten iron, effectively improving its filtering effect, avoiding the traditional square or circular standard filter piece with only one filtering surface, which is easily blocked and affects the filtering effect.

[0036] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A filter box for the casting of the rear housing of a wind turbine gearbox, including a backwashing plate, characterized in that, A conical material hole is provided in the middle of the upper end of the recoil plate. The upper end of the recoil plate is connected to a feed pipe, and a feed nozzle is installed at the upper end of the feed pipe. A first sealing groove is provided at the lower end of the recoil plate, and a filter box is clamped in the inner cavity of the first sealing groove. The filter box includes a box body clamped in the inner cavity of the first sealing groove. Three mounting plates are integrally installed on the outer side of the box body, and the mounting plates are all located in the inner cavity of the first sealing groove. The recoil plate is screwed to the three mounting plates by bolts. A bottom plate is screwed to the lower end of the box body. A second filtering component is provided between the bottom plate and the box body. A first filtering component is installed on the upper end of the bottom plate. A threaded groove is provided in the middle of the upper end of the bottom plate, and a precipitation component is screwed in the inner cavity of the threaded groove.

2. The filter box for casting the rear housing of a wind turbine gearbox according to claim 1, characterized in that, The second filtering component includes an upper support frame and a triangular filter sheet. The upper support frame is arranged in the inner cavity of the box body. The lower end of the upper support frame is connected to the triangular filter sheet, and the lower end of the triangular filter sheet is connected to a lower support frame.

3. A filter box for casting the rear housing of a wind turbine gearbox according to claim 2, characterized in that, A second sealing groove for clamping the lower support frame is provided on the upper end of the bottom plate. Three limiting blocks are integrally connected to the outer side of the bottom plate, and the limiting blocks are located outside the box body.

4. A filter box for casting the rear housing of a wind turbine gearbox according to claim 2, characterized in that, A third sealing groove for clamping the upper support frame is provided at the top of the inner cavity of the box body. Three groups of limiting grooves are provided on the inner wall of the box body, and the three groups of limiting grooves are inserted into the second filtering component.

5. A filter box for casting the rear housing of a wind turbine gearbox according to claim 1, characterized in that, The precipitation component includes a precipitation seat screwed to the threaded groove. A sealing ring plate is integrally installed on the outer side of the precipitation seat. A clamping groove is provided at the lower end of the bottom plate for clamping the sealing ring plate. An upper part of the inner cavity of the precipitation seat is connected with a precipitation ring box, and a spacer sleeve is integrally connected to the upper end of the precipitation ring box.

6. A filter box for casting the rear housing of a wind turbine gearbox according to claim 5, characterized in that, The first filtering component includes a filter cover installed on the upper end of the bottom plate. An inner sleeve is connected to the inner side of the filter cover. A material guiding hopper is connected to the upper end of the filter cover, and the material guiding hopper corresponds to the position of the inner sleeve. The filter cover is made of ceramic material. A number of mesh holes are provided on the outer side of the filter cover. The spacer sleeve is located between the filter cover and the inner sleeve.

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