Detachable injection molding doctor blade product
The detachable injection-molded scraper design solves the problems of fluid leakage and material waste caused by scraper wear in micro pumps, achieving convenient replacement and cost savings.
Patent Information
- Application Number
- CN202520599328.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-04-01
AI Technical Summary
The wear and tear of the blades in existing micro pumps leads to increased fluid leakage, resulting in reduced volumetric efficiency and increased energy consumption. At the same time, replacing the entire blades results in material waste.
It adopts a detachable injection-molded scraper design, and the worn parts can be replaced by plugging in the replacement head. The limit block, plug block and limit hole are used to ensure the connection is stable, reduce friction and facilitate replacement.
Reduce material waste, lower replacement costs, reduce noise, improve connection stability, and save energy.
Smart Images
Figure CN223794374U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of micro pump technology, and in particular to a detachable injection molding scraper product. Background Technology
[0002] Some existing micro pumps are made of one-piece plastic casting. The internal motor drives an eccentric wheel and scrapers to rotate in the housing to generate centrifugal force to transport liquid. As some scrapers slide against the inner side of the liquid during rotation, the contact points between the scrapers on the eccentric wheel and the housing will gradually wear down during long-term operation. As the wear increases, the gap will widen, leading to increased fluid leakage. This leaked fluid is not effectively utilized to increase flow rate and head, resulting in a decrease in the pump's volumetric efficiency. To compensate for the leakage and maintain a certain flow rate and head, the pump needs to consume more energy, increasing energy consumption.
[0003] Because the scrapers inside the pump are all cast in one piece, the entire unit must be replaced each time, resulting in material waste. In order to reduce material waste and save costs, this solution proposes a detachable injection-molded scraper product. Utility Model Content
[0004] To address the issue of material waste, this application provides a detachable injection molding scraper product.
[0005] The detachable injection molding scraper product provided in this application adopts the following technical solution:
[0006] A detachable injection molding scraper product includes a housing, an eccentric wheel at the bottom of the housing, a scraper assembly inside the eccentric wheel, and a scraper body rotatably connected to the housing. The scraper body has a second rectangular groove inside, and symmetrical slots at both ends. Replacement heads are symmetrically inserted into both ends of the scraper body. Limiting blocks that engage with the slots are fixedly connected to the inner surfaces of the two replacement heads. Inserts that engage with the second rectangular groove are fixedly connected to the inner surfaces of the two replacement heads. Limiting holes for fixing the replacement heads are provided on one side of each insert.
[0007] By adopting the above technical solution, and through the pluggable replacement head, when the replacement heads at both ends of the scraper body are worn, it is not necessary to replace the entire scraper assembly; only the worn replacement head needs to be replaced, thereby reducing material waste and saving costs. At the same time, the connection is ensured to be stable through the limiting block, the plug block, and the limiting hole.
[0008] Preferably, one side of the replacement head is arc-shaped, and the arc-shaped end of the replacement head is slidably connected to the inner side of the housing.
[0009] By adopting the above technical solution, the design of the replacement head arc surface and the sliding connection with the shell can reduce friction and reduce noise generation.
[0010] Preferably, a first rectangular groove is symmetrically formed on one side of the scraper body, and a slot is symmetrically formed on both sides of the two first rectangular grooves.
[0011] By adopting the above technical solution, the opening of the first rectangular groove and the slot is used to connect other accessories.
[0012] Preferably, a fixing component is provided on one side of the scraper body at the first rectangular groove. The fixing component includes a fixing block that is inserted into the first rectangular groove, and the diameter of the fixing block is the same as that of the first rectangular groove.
[0013] By adopting the above technical solution, the fixing block is installed to fix the replacement head through other connectors.
[0014] Preferably, a third rectangular groove is provided in the middle of the fixing component, and a limiting post for insertion into the limiting hole is movably passed through the middle of the third rectangular groove, and a connecting block is fixedly connected to one end of the limiting post.
[0015] By adopting the above technical solution, the connecting block can control the insertion of the limiting post and the limiting hole on one side of the replacement head, so as to facilitate replacement.
[0016] Preferably, a limiting ring is fixedly connected to the outer peripheral surface of the limiting post, and a compression spring is sleeved on the outer peripheral surface of the limiting post for abutting against the fixing block and the limiting ring at both ends.
[0017] By adopting the above technical solution, the elastic force of the compression spring acts on the limiting ring, so that the limiting post can always remain in the plugged state.
[0018] Preferably, right-angled plates are symmetrically fixedly connected to both sides of the fixing block, and the ends of the two right-angled plates are fixedly connected to engaging blocks for engaging with the first rectangular groove.
[0019] By adopting the above technical solution, the connection between the locking block and the first rectangular groove is used to restrict the fixing block.
[0020] Preferably, the scraper body and the fixing block are both integrally injection molded.
[0021] By adopting the above technical solution, the scraper body and the fixing block are integrally injection molded, which significantly improves the overall structural strength.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. With the detachable scraper assembly for injection molded products, when the replacement heads at both ends are worn, simply pull the connecting block to disengage the limiting post from the limiting hole on the insert block, and the replacement head can be quickly removed for replacement without replacing the entire scraper assembly. This greatly reduces material waste. At the same time, only the worn replacement head needs to be replaced, avoiding the replacement of the entire scraper assembly, which significantly reduces replacement costs and achieves the goal of cost saving. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of the application documents;
[0025] Figure 2 This is a schematic diagram of the scraper body in this application.
[0026] Figure 3 This is a schematic diagram of the structure of the fixed component in this application.
[0027] Figure 4 This is a cross-sectional structural diagram of the scraper body in this application.
[0028] Figure 5 This is a schematic diagram of the connection structure between the scraper body and the replacement head in this application.
[0029] Figure 6 This is a schematic diagram of the connection structure between the replacement head and the limit block in this application.
[0030] Reference numerals: 1. Housing; 2. Eccentric wheel;
[0031] 3. Scraper assembly; 301. Scraper body; 302. First rectangular groove; 303. Slot; 304. Second rectangular groove;
[0032] 4. Replacement head; 401. Limiting block; 402. Insertion block; 403. Limiting hole;
[0033] 5. Fixing components; 501. Fixing block; 502. Third rectangular groove; 503. Limiting post; 504. Connecting block; 505. Limiting ring; 506. Compression spring; 507. Right angle plate; 508. Engaging block. Detailed Implementation
[0034] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.
[0035] The device's "up, down, left, right" perspectives are... Figure 1 The orientation of the attached diagram is the reference.
[0036] This application discloses a detachable injection molding scraper product.
[0037] Reference Figures 1-3 As shown, a detachable injection molding scraper product includes a housing 1. An eccentric wheel 2 is mounted on the bottom of the housing 1. A groove is formed inside the eccentric wheel 2, and a scraper assembly 3 is movably mounted within the groove. The scraper assembly 3 includes a scraper body 301 rotatably connected to the housing 1. A second rectangular groove 304 penetrating the scraper body 301 is formed in the center of the interior of the scraper body 301. Symmetrically formed arc-shaped retaining grooves 303 are formed at the center of both ends of the scraper body 301. Replacement heads 4 for sliding connection with the inner surface of the housing 1 are symmetrically inserted into both ends of the scraper body 301. Arc-shaped retaining grooves are fixedly connected to the inner surfaces of the two replacement heads 4. The limiting block 401 has the same size as the slot 303 and is engaged with the slot 303. The inner sides of the two replacement heads 4 are symmetrically fixed with insert blocks 402, which are inserted into the second rectangular slot 304. One side of the limiting block 401 is attached to the end of the scraper body 301. Limiting holes 403 are opened on one side of the two insert blocks 402. The replacement head 4 can be fixed to both ends of the scraper body 301 by inserting the connecting piece into the limiting holes 403. One side of the replacement head 4 is arc-shaped and is slidably connected to the inner side of the housing 1 to reduce the friction generated during rotational connection.
[0038] The eccentric wheel 2 at the bottom of the housing 1 rotates, driving the scraper assembly 3 in the groove of the eccentric wheel 2 to move. The scraper body 301 in the scraper assembly 3 is connected to the limiting block 401 on the inner side of the replacement head 4 through the end slots 303, thereby facilitating the combination connection of the scraper body 301 and the replacement head 4. At the same time, the insert block 402 on the inner side of the replacement head 4 is inserted into the second rectangular groove 304 of the scraper body 301, thereby improving the connection strength. Finally, the connecting piece is inserted into the limiting hole 403 on one side of the insert block 402 to fix the replacement head 4 at both ends of the scraper body 301. The replacement head 4 is slidably connected to the inner surface of the housing 1. When worn, the connecting piece can be removed to replace the replacement head 4, thus achieving the function of easy replacement.
[0039] Reference Figures 3-6As shown, a first rectangular groove 302 is symmetrically formed on the side of the scraper body 301 near the replacement head 4. A triangular slot 303 is symmetrically formed on both sides of the two first rectangular grooves 302. A fixing component 5 is provided on one side of the scraper body 301 at the first rectangular groove 302. The fixing component 5 includes a fixing block 501, which is inserted into the first rectangular groove 302 and has its side surface in contact with the scraper body 301. The fixing block 501 and the outer surface of the scraper body 301 are on the same plane. The diameter of the fixing block 501 is the same as that of the first rectangular groove 302, and their side surfaces are in contact. A third rectangular groove 502, which is H-shaped in shape, is formed in the middle of the fixing component 5. A circular hole is formed in the middle of the third rectangular groove 502, and a limiting post 503 with a hemispherical end is movably inserted through the circular hole. The limiting post 503 is inserted into the limiting hole 403. One end of 503 is fixedly connected to a connecting block 504 whose end is on the same horizontal plane as the outer side of the fixing block 501. A limiting ring 505 is fixedly connected to the outer peripheral surface of the limiting post 503. The outer peripheral surface of the limiting ring 505 fits against the fixing block 501. A compression spring 506 is sleeved on the outer peripheral surface of the limiting post 503. One end of the compression spring 506 abuts against the fixing block 501, and the other end of the compression spring 506 abuts against the limiting ring 505. Grooves are symmetrically opened on both sides of the fixing block 501. Right angle plates 507 are fixedly installed in the grooves. The ends of the two right angle plates 507 are fixedly connected to a locking block 508 that is triangular in shape. The locking block 508 is engaged with the first rectangular groove 302. The scraper body 301 and the fixing block 501 are all made of one piece of plastic injection molding. The limiting ring 505, compression spring 506, connecting block 504, and compression spring 506 are installed later.
[0040] The fixing block 501 is inserted into and fits into the first rectangular groove 302, and the engaging block 508 is engaged with the first rectangular groove 302, thereby fixing the fixing block 501 onto the scraper body 301. The fixing component 5 has a movable limit post 503 that passes through the third rectangular groove 502 in the middle. The limit post 503 is inserted into the limit hole 403, and the other end is connected to the connecting block 504. A limit ring 505 is fixedly installed on the outer periphery of the limit post 503, so that one end of the compression spring 506 abuts against the fixing block 501 and the other end abuts against the limit ring 505. Under the action of the compression spring 506, the limit post 503 is pushed to maintain the insertion state. When the replacement head 4 needs to be replaced, the connecting block 504 is pulled to compress the compression spring 506 so that the limit post 503 is disengaged from the limit hole 403, and the replacement head 4 can be replaced.
[0041] It should be noted that the housing 1 is fixed to the output end of the motor by bolts, and the output shaft of the motor is inserted into the eccentric shaft on the eccentric wheel 2. The housing 1, eccentric wheel 2, motor and connecting wire are existing and mature technologies, so the specific connection relationship will not be described in detail. Existing connection assemblies can be installed for use.
[0042] The implementation principle of a detachable injection-molded scraper product in this application embodiment is as follows: First, the integrally manufactured fixing block 501 is inserted into the first rectangular groove 302 on one side of the scraper body 301. The fixing block 508 is engaged with the first rectangular groove 302, thereby fixing the fixing block 501 on the scraper body 301. The eccentric wheel 2 at the bottom of the housing 1 is driven to rotate by the motor. The eccentric wheel 2 drives the scraper assembly 3 to rotate inside the housing 1. During the rotation of the scraper assembly 3 on the inner side of the housing 1, the replacement heads 4 at both ends will be worn. When it is necessary to replace the replacement head 4, the housing 1 is removed first, the scraper assembly 3 is removed from the eccentric wheel 2, and then the connecting block 504 is pulled to move the limiting post 503 to one side, thereby compressing the compression spring 506, so that the limiting post 503 is disengaged from the limiting hole 403 on the insert block 402, thereby quickly removing the replacement head 4, thus achieving the function of easy replacement.
[0043] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.
Claims
1. A detachable injection molded wiper product characterized by: Including shell (1), the bottom of shell (1) is provided with eccentric wheel (2), the inside of eccentric wheel (2) is provided with scraper assembly (3), scraper assembly (3) includes scraper main body (301) rotationally connected with shell (1), the inside of scraper main body (301) is provided with second rectangular groove (304), the both ends of scraper main body (301) are symmetrically provided with clamping groove (303), the both ends of scraper main body (301) are symmetrically inserted with replacement head (4); The inner side of two replacement heads (4) is fixedly connected with the limiting block (401) engaged with the clamping groove (303), the inner side of two replacement heads (4) is fixedly connected with the plug block (402) inserted with the second rectangular groove (304), one side of two plug blocks (402) is provided with limiting hole (403) for fixing replacement head (4).
2. A detachable injection molded wiper product according to claim 1, characterized in that: One side of the replacement head (4) is arc, one end of the arc of the replacement head (4) is slidably connected with the inner side of the shell (1).
3. A detachable injection molded wiper product according to claim 1, characterized in that: The side of the scraper main body (301) is symmetrically provided with the first rectangular recess (302), and the two sides of the two first rectangular recesses (302) are symmetrically provided with the clamping groove (303).
4. A detachable injection molded wiper product according to claim 1, characterized in that: The side of the scraper main body (301) is provided with a fixing assembly (5) at the first rectangular recess (302), the fixing assembly (5) includes a fixing block (501) inserted with the first rectangular recess (302), and the fixing block (501) has the same diameter as the first rectangular recess (302).
5. A detachable injection molded wiper product according to claim 4, characterized in that: The middle of the fixing assembly (5) is provided with a third rectangular groove (502), the middle of the third rectangular groove (502) is movably penetrated by a limiting column (503) inserted with the limiting hole (403), one end of the limiting column (503) is fixedly connected with a connecting block (504).
6. A detachable injection molded wiper product according to claim 5, characterized in that: The outer circumferential surface of the limiting column (503) is fixedly connected with a limiting ring (505), and the outer circumferential surface of the limiting column (503) is provided with a compression spring (506) abutting against the fixing block (501) and the limiting ring (505) at both ends.
7. A detachable injection molded wiper product according to claim 4, characterized in that: The both sides of the fixing block (501) are symmetrically fixedly connected with right angle plates (507), and the end portions of the two right angle plates (507) are fixedly connected with clamping blocks (508) engaged with the first rectangular recess (302).
8. A detachable injection molded wiper product according to claim 1, characterized in that: The scraper main body (301) and the fixing block (501) are integrally injection molded.