Stirring wall scraping device and stirring kettle
Through the combination of the stepless adjustment structure and the lock unlocking device, the problem of precise fit of the agitator blade is solved, and the flexible adjustment and stable locking of the scraper and the kettle wall are achieved, which improves the stirring effect.
Patent Information
- Application Number
- CN202323416348.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-14
AI Technical Summary
The scraper processing accuracy requirements on existing stirring pads are high and the precise fit is difficult, resulting in poor scraping effect, especially when dealing with viscous or hard substances, it is easy to cause inadequate scraping.
The sliding fit structure and locking unlocking device adopt a stepless adjustment structure, and the mortise and tenon structure of the dovetail block and dovetail groove can be used to adjust the scraper and the fixing seat to ensure the fit between the scraper and the kettle wall and avoid the pin hole. Trifty arrangement and precision requirements.
The scraper is accurately adjusted and stable locked, which improves the scraper effect, reduces the difficulty of installation and use, avoids the problem of too long or too short scraper, and ensures effective scraping of the kettle wall.
Smart Images
Figure CN222196790U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stirring processing, in particular to a stirring wall scraping device and a stirring kettle. Background Art
[0002] In the field of stirring processing, a stirring kettle (barrel) is a commonly used stirring device. The stirring kettle is usually a cylindrical barrel or a spherical barrel with an opening at the top. The material to be mixed or stirred is added into it through the top opening, and then a stirring paddle and a driving mechanism such as a motor are arranged in the stirring kettle to drive the stirring paddle to rotate, so as to achieve sufficient stirring and mixing of the material to be stirred. When a conventional stirring kettle is used to stir some relatively viscous materials (flour, viscose) that are easy to adhere to the inner wall of the kettle, it is necessary to scrape and clean the inner wall of the kettle afterwards. Therefore, when installing and arranging the stirring paddle in the stirring kettle, it is more and more accepted and promoted to select a stirring paddle wall scraping device that can extend to the inner wall of the kettle and slide in contact with it, so that the stirring paddle can scrape the kettle wall during the rotation and stirring process.
[0003] However, through the above analysis, it can be seen that the scraping device of the stirring paddle needs to just touch the wall of the kettle to achieve the anti-adhesion and scraping effect. If there is a slight deviation, it will be difficult to use normally. If the scraping device is too long, it is easy to cause wear on the top pressure end and the stirring paddle cannot be loaded into the kettle. If it is too short, it cannot scrape the kettle wall and the scraping effect is not good. Therefore, the scraping device on the stirring paddle can be set to an adjustable structure. For example, a self-positioning solder paste mixer with a scraping mechanism is disclosed in the Chinese utility model patent document with the authorization announcement number CN218459262U and the authorization announcement date of 2023.2.10. The scraper used to scrape the kettle wall is elastically installed on the front end of the stirring blade (fixed seat) through multiple compression springs. The stirring blade is connected to the drive shaft (motor shaft), so that the scraper itself can be adjusted, which is convenient for installation and use. The scraper is retracted by pressing the top pressure to achieve the contact and adaptation of the scraper on the kettle wall. However, this type of stirring paddle is prone to not scraping properly due to the elastic adjustment of the spring during use. Especially when the particles are hard and the stirring material is thick, it is easy for the scraper to elastically retract or elastically skip some hard points, affecting the scraping effect.
[0004] In response to the above problems, a Chinese utility model patent with authorization announcement number CN214131263U and authorization announcement date of September 7, 2021, discloses a wall scraping stirring device with adjustable radius. The stirring device adopts a fixed form of a scraper and a stirring paddle (fixed seat) pinned together. A plurality of pin holes are set on the stirring paddle, and then the pin is fixed on the scraper. The pin on the scraper is fixed with different pin holes to achieve the adjustment of the length of the stirring paddle. The stirring in this stirring device will be ensured by the coordination of the pin and the pin hole, and the scraping effect is better. However, due to the spaced arrangement of the pin holes, the spacing of the pin holes needs to be adapted to the scraper. Otherwise, after the pin holes are switched, it is still easy for the scraper to exceed the range of the kettle wall or fail to reach the kettle wall. There are high processing accuracy requirements for the hole spacing, scraper length, and the fixed position of the pin on the scraper, and precise matching is difficult. Utility Model Content
[0005] The purpose of the utility model is to provide a stirring wall scraping device to solve the technical problems of the scraper on the stirring paddle in the prior art, which requires high processing accuracy and is difficult to accurately match. In addition, the purpose of the utility model is also to provide a stirring kettle to solve the above technical problems.
[0006] In order to achieve the above-mentioned purpose, the technical solution of a stirring and scraping device provided by the utility model is:
[0007] A stirring and scraping device, the stirring and scraping device comprises a fixed seat for connecting and fixing with a drive shaft, a scraper is connected to the fixed seat, a position adjustment structure is arranged between the fixed seat and the scraper, the position adjustment structure is a stepless adjustment structure, the stepless adjustment structure is a sliding fit structure, the sliding fit structure comprises a dovetail block and a dovetail groove respectively arranged on the fixed seat and the scraper, and a locking and unlocking device is arranged between the fixed seat and the scraper.
[0008] Beneficial effects: The utility model is based on the problems existing in the scraper device of the existing stirring device, and is improved on the basis of the existing technology, which is an improved invention. Specifically, the fixed seat connected to the drive shaft in the stirring scraper device and the scraper connected to the fixed seat are matched with each other through the position adjustment structure, and then the position adjustment structure is set as a stepless adjustment structure, so that the distance that the scraper moves toward the kettle wall of the stirring kettle can be adjusted arbitrarily, thereby ensuring that the end of the scraper can be attached to the kettle wall. Then, a locking and unlocking device is set between the fixed seat and the scraper, so that the locking and unlocking device is matched with the stepless adjustment structure, so that the locking and unlocking device locks the scraper and the fixed seat when locked, thereby locking the position adjustment structure. It is unlocked when it needs to be adjusted. Through such a structural arrangement, the locking and unlocking device can be set at any position between the scraper and the fixed seat, without the cumbersome arrangement of multiple pin shaft holes in the prior art, and without the precision consideration of the hole spacing. The stepless adjustment and locking and unlocking cooperate together, solving the technical problems of high processing precision requirements and high difficulty in precise matching of the scraper on the stirring paddle in the prior art. The sliding fit structure is easy to move and the position can be adjusted accurately. The distance can be accurately adjusted by sliding the scraper on the fixed seat. The mortise and tenon structure composed of the dovetail block and the dovetail groove can not only fit firmly in the sliding direction, but also tighten the fixed seat and the scraper in the direction perpendicular to the sliding direction.
[0009] Preferably, the dovetail block and dovetail groove matching structures are arranged in pairs of at least two pairs, and each pair of matching structures or its side is provided with the corresponding locking and unlocking device. The provision of at least two pairs of matching structures makes the matching between the scraper and the fixing seat more secure, ensuring the reliability and stability of the sliding matching.
[0010] Preferably, the locking and unlocking device is a pressing member arranged between the fixing seat and the scraper and enabling the fixing seat and the scraper to move away from and approach each other. The pressing member can push the scraper and the fixing seat away from each other to ensure the strength of the locking fit.
[0011] Preferably, the dovetail block and the dovetail groove are clearance-matched, and the locking and unlocking device is a top screw. The top screw has a simple structure and is convenient to set up, has a good top tightening effect, and is also very convenient to unlock.
[0012] Preferably, the top screw is arranged at the matching position of the dovetail block and the dovetail groove. The dovetail groove and the dovetail block with clearance matching can adjust the matching position through clearance activity when the top screw is directly tightened, so as to achieve the best matching effect.
[0013] Preferably, the fixing seat includes an intermediate connecting plate, and the position adjustment structure and the locking and unlocking device are arranged between the scraper and the intermediate connecting plate. The intermediate connecting plate facilitates the arrangement of the sliding matching structure on the fixing seat, and when the sliding matching structure is worn out during use, the intermediate connecting plate can be replaced without replacing the fixing seat connected to the drive shaft.
[0014] Preferably, the fixing seat is provided with a connecting sleeve for connecting and fixing with the drive shaft. The connecting sleeve facilitates the fixed connection between the drive shaft and the fixing seat, and facilitates the connection and fixing of the fixing seat and the drive shaft.
[0015] The technical solution of a stirring kettle provided by the utility model is:
[0016] A stirring kettle comprises a kettle body and a driving shaft arranged in the kettle body, and also comprises a stirring and scraping device connected to the driving shaft in a transmission manner. The stirring and scraping device comprises a fixed seat for being connected and fixed to the driving shaft, a scraper is connected to the fixed seat, a position adjustment structure is arranged between the fixed seat and the scraper, the position adjustment structure is a stepless adjustment structure, and a locking and unlocking device is arranged between the fixed seat and the scraper.
[0017] Beneficial effects: The utility model is based on the existing problems of the scraper device in the stirring kettle, and is improved on the basis of the existing technology, which is an improved invention. Specifically, the fixed seat connected to the drive shaft in the stirring and scraping device and the scraper connected to the fixed seat are matched with each other through the position adjustment structure, and then the position adjustment structure is set as a stepless adjustment structure, so that the distance that the scraper moves toward the kettle wall of the stirring kettle can be adjusted arbitrarily, thereby ensuring that the end of the scraper can be attached to the kettle wall. Then, a locking and unlocking device is set between the fixed seat and the scraper, so that the locking and unlocking device is matched with the stepless adjustment structure, so that the locking and unlocking device locks the scraper and the fixed seat when locked, so as to lock the position adjustment structure. It is unlocked when it needs to be adjusted. Through such a structural arrangement, the locking and unlocking device can be set at any position between the scraper and the fixed seat, without the cumbersome arrangement of multiple pin shaft holes in the prior art, and without the precision consideration of the hole spacing. The stepless adjustment and locking and unlocking cooperate together, solving the technical problems of high processing precision requirements and high difficulty in precise matching of the scraper on the stirring paddle in the prior art.
[0018] Preferably, the stepless adjustment structure is a sliding fit structure. The sliding fit structure is convenient for displacement and accurate in position adjustment, and the distance can be accurately adjusted by sliding the scraper on the fixed seat.
[0019] Preferably, the sliding matching structure comprises a dovetail block and a dovetail groove respectively arranged on the fixed seat and the scraper. The mortise and tenon structure formed by the dovetail block and the dovetail groove can not only match firmly in the sliding direction, but also tighten the fixed seat and the scraper in the direction perpendicular to the sliding direction.
[0020] Preferably, the dovetail block and dovetail groove matching structures are arranged in pairs of at least two pairs, and each pair of matching structures or its side is provided with the corresponding locking and unlocking device. The provision of at least two pairs of matching structures makes the matching between the scraper and the fixing seat more secure, ensuring the reliability and stability of the sliding matching.
[0021] Preferably, the locking and unlocking device is a pressing member arranged between the fixing seat and the scraper and enabling the fixing seat and the scraper to move away from and approach each other. The pressing member can push the scraper and the fixing seat away from each other to ensure the strength of the locking fit.
[0022] Preferably, the dovetail block and the dovetail groove are clearance-matched, and the locking and unlocking device is a top screw. The top screw has a simple structure and is convenient to set up, has a good top tightening effect, and is also very convenient to unlock.
[0023] Preferably, the top screw is arranged at the matching position of the dovetail block and the dovetail groove. The dovetail groove and the dovetail block with clearance matching can adjust the matching position through clearance activity when the top screw is directly tightened, so as to achieve the best matching effect.
[0024] Preferably, the fixing seat includes an intermediate connecting plate, and the position adjustment structure and the locking and unlocking device are arranged between the fixing seat and the intermediate connecting plate. The intermediate connecting plate facilitates the arrangement of the sliding matching structure on the fixing seat, and when the sliding matching structure is worn out during use, the intermediate connecting plate can be replaced without replacing the fixing seat connected to the driving shaft.
[0025] Preferably, the fixing seat is provided with a connecting sleeve for connecting and fixing with the drive shaft. The connecting sleeve facilitates the fixed connection between the drive shaft and the fixing seat, and facilitates the connection and fixing of the fixing seat and the drive shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic diagram of the structure of the stirring and scraping device in the embodiment provided by the utility model.
[0027] Description of reference numerals:
[0028] 1. Fixed seat; 2. Scraper; 3. Dovetail block; 4. Dovetail groove; 5. Threaded hole; 6. Top screw; 7. Fixed hole; 8. Middle connecting plate; 9. Connecting sleeve. DETAILED DESCRIPTION
[0029] The utility model is based on the existing problems of the scraper device in the existing mixing kettle, and is improved on the basis of the existing technology. A position adjustment structure is set between a fixed seat connected to a driving shaft and a scraper connected to the fixed seat, and the position adjustment structure is set as a stepless adjustment structure, so as to achieve stepless adjustment of the scraper in the process of adjusting the distance toward the kettle wall of the mixing kettle, and ensure that the end of the scraper is close to the kettle wall. Then, a locking and unlocking device is set between the fixed seat and the scraper, so that the locking and unlocking device cooperates with the stepless adjustment structure, so that the locking and unlocking device locks or unlocks the scraper on the fixed seat, and achieves precise adjustment and locking after adjustment and subsequent adjustability.
[0030] The present invention will be described in further detail below in conjunction with the embodiments.
[0031] Specific embodiment 1 of the stirring and scraping device provided by the utility model:
[0032] like Figure 1 As shown, the stirring and scraping device in this embodiment includes a fixed seat 1. The fixed seat 1 in this embodiment is a rectangular block structure. The top of the rectangular fixed seat 1 is used to be installed in the stirring kettle, so as to be fixedly connected to the driving shaft rotatably arranged in the stirring kettle, so that the driving shaft can drive the fixed seat 1 to rotate synchronously. In other embodiments, the shape of the fixed seat 1 can be changed arbitrarily, for example, it can be set to an elliptical or disc shape. The stirring and scraping device also includes a scraper 2 detachably connected to the fixed seat 1, and the scraper 2 can adjust its fixed matching position on the fixed seat 1, so as to achieve a close fit between the scraper 2 and the wall of the stirring kettle, thereby ensuring the scraping effect.
[0033] In this embodiment, the fixed seat 1 is defined to extend left and right, that is, the overall installation direction of the stirring and scraping device extends left and right, and the scraper 2 on the fixed seat 1 can adjust the direction of its fixed connection left and right. Specifically, the fixed seat 1 and the scraper 2 are connected by a position adjustment structure, and the position adjustment structure is a stepless adjustment structure, specifically a sliding fit structure. Figure 1 As shown, the sliding fit structure in this embodiment includes a dovetail groove 4 provided on the scraper 2 and extending left and right, and a dovetail block 3 provided on the fixed seat 1 and slidingly fitted with the dovetail groove 4. Through the mortise and tenon fit of the dovetail groove 4 and the dovetail block 3, the extension distance of the scraper 2 on the fixed seat 1 can be steplessly adjusted. In this embodiment, the stirring and scraping device also includes a locking and unlocking device provided between the fixed seat 1 and the scraper 2, and the locking and unlocking device is used to cooperate with the sliding fit structure, so as to adjust the position of the scraper 2 on the fixed seat 1 and then lock it. In other embodiments, the setting positions of the dovetail groove and the dovetail block can be swapped, that is, the dovetail groove can be provided on the fixed seat, and the dovetail block can be provided on the scraper.
[0034] In this embodiment, the sliding matching structure includes two pairs of upper and lower dovetail grooves 4 and dovetail blocks 3 that are parallel to each other, and each pair of matching structures is in the same extension direction as the scraper 2, that is, they extend in the left and right direction. In other embodiments, the dovetail grooves 4 and dovetail blocks 3 matching structures in the sliding matching structure can also be set to more than two pairs. Of course, in other embodiments, when the size of the sliding matching structure is larger, only one pair of dovetail grooves and dovetail blocks matching structures can be set. Alternatively, the shape of the sliding matching structure can also be changed, for example, a continuous groove block matching structure is set, or a sliding matching structure with a groove block having a cross-section of a triangle, an ellipse, a circle, a rhombus, etc., and the shape of the matching groove structure is also adaptively adjusted.
[0035] like Figure 1 As shown, the locking and unlocking device in this embodiment is pressed against the sliding fit structure. The locking and unlocking device is specifically a top screw 6 that penetrates into the dovetail groove 4 and presses against the dovetail block 3. The scraper 2 is provided with a threaded hole 5 that vertically penetrates the bottom of the dovetail groove 4. By arranging a locking and unlocking device between the fixing seat 1 and the scraper 2, the locking and unlocking device is matched with the sliding fit structure formed by the dovetail groove 4 and the dovetail block 3, so that the locking and unlocking device "tightens" the scraper 2 against the fixing seat 1 to ensure that the scraper 2 and the fixing plate fit securely. In other embodiments, the locking and unlocking device can also be a card or a cardboard inserted between the scraper 2 and the fixing seat 1 to achieve outward tightening of the baffle and the fixing seat 1 to ensure the tightening effect. Of course, in other different embodiments, the top screw can also be replaced by a bolt or a screw.
[0036] In order to ensure the movable adjustment effect after the tight fit, the paired dovetail grooves 4 and dovetail blocks 3 in each sliding fit structure in this embodiment are all clearance fit, and the clearance can make the scraper 2 adjust the fitting position through the clearance when the top screw 6 passes through the threaded hole 5 and presses on the dovetail block 3 for tight fit, so as to achieve the best fitting effect. In other embodiments, the dovetail groove and the dovetail block can also be close and slidingly fit, and there is no movable gap between the two.
[0037] like Figure 1As shown, both pairs of matching structures are provided with top screws 6 that can tighten the respective dovetail blocks 3 inward. That is, each sliding matching structure is individually provided with a locking and unlocking device. In other embodiments, only one locking and unlocking device may be provided on the entire stirring and scraping device, or the setting position of the locking and unlocking device may not correspond to the sliding matching structure, or locking and unlocking devices may be provided at positions corresponding to and not corresponding to the sliding matching structure on the baffle. In this case, the number of locking and unlocking devices may not correspond to the sliding matching structure. For example, the matching structures in the sliding matching structure are still provided with two, and the locking and unlocking device is provided with a top screw on the side of the sliding matching structure in addition to the two top screws provided on the sliding matching structure. In other embodiments, each pair of matching structures is provided with a locking and unlocking device that cooperates with it on its side.
[0038] In other embodiments, the sliding fit structure can also be a sliding fit form of a straight guide rail and a guide groove, in which case the locking and unlocking device is a clamp or a C-shaped lock, or the locking and unlocking device can also be a long hole and a bolt and nut structure arranged on the fixed seat and the scraper. For example, a long hole extending left and right is arranged on the scraper, a bolt passing through the long hole is fixed on the fixed seat, and a nut is used to tighten the protruding part of the bolt, so as to realize stepless adjustment of the bolt when sliding and locking of the nut. Alternatively, the sliding fit structure can also be in the form of an axial hole insertion, such as a plug column is arranged on the scraper, and a plug hole is arranged on the fixed seat, and the two can still be tightened by a top screw at the position where they are inserted. In other different embodiments, when a matching structure of a long hole plus a bolt and nut is adopted, the stepless adjustment structure can also be a matching structure of a fixed seat and a scraper to stop and fit. At this time, the sliding fit of the two does not have an external limiting structure. In other different embodiments, the stepless adjustment structure and the locking and unlocking device structure are matched in various forms, and the locking and unlocking device can also be a connection structure of a double long hole matching locking screw or a sliding fit structure and a clamp or a chain structure.
[0039] The method of using the stirring and scraping device in this embodiment is as follows: first, the fixed seat 1 is fixedly connected to the driving shaft in the stirring kettle, and the scraper 2 slides into the dovetail block 3 on the fixed seat 1 from the side through the dovetail groove 4. The scraper 2 can be slid back and forth to adjust whether it scrapes the kettle wall. After scraping, the top screw 6 is locked in the threaded hole 5 on the scraper 2. The sliding matching structure is matched with a gap, and the top screw 6 will lift the scraper 2 and tightly position it in the appropriate position on the fixed seat 1. This reduces the difficulty of using the scraper 2 and improves convenience.
[0040] Specific embodiment 2 of the stirring and scraping device provided by the utility model:
[0041] This embodiment is further improved on the basis of embodiment 1, such as Figure 1As shown, the fixing seat 1 includes an intermediate connecting plate 8, the intermediate connecting plate 8 is provided with a fixing hole 7, and the fixing seat 1 is provided with a connecting hole corresponding to the fixing hole 7. The fixing hole 7 in this embodiment is a smooth hole, the connecting hole is a threaded hole 5, and the fixing seat 1 and the intermediate connecting plate 8 are threadedly connected. The sliding matching structure is arranged between the scraper 2 and the intermediate connecting plate 8. Specifically, Figure 1 As shown, the sliding fit structure includes a dovetail block 3 provided on the intermediate connecting plate 8 and a dovetail groove 4 provided on the scraper 2. In other embodiments, the intermediate connecting plate can also be directly welded to the fixing seat or fixedly connected by different methods such as splints, adhesives, etc. In other embodiments, the specific structure of the sliding fit structure and the locking and unlocking device is similar to that of Example 1, except that the intermediate connecting plate replaces the fixing seat in Example 1 for connecting with the scraper.
[0042] Specific embodiment 3 of the stirring and scraping device provided by the utility model:
[0043] This embodiment is further improved on the basis of embodiment 1 or embodiment 2, such as Figure 1 As shown, in order to facilitate the connection and fixation between the fixing seat 1 and the drive shaft, a connecting sleeve 9 for connecting and fixing with the drive shaft is provided on the fixing seat 1. The fixing forms of the connecting sleeve 9 are also various, such as the commonly used welding fixation in this embodiment. Alternatively, the connecting sleeve can also be threaded or fixed with a connector.
[0044] The specific embodiment of the stirring kettle provided by the utility model is:
[0045] The stirring kettle in this embodiment includes a kettle body and a driving shaft arranged in the kettle body, and also includes a stirring and scraping device transmission-connected to the driving shaft. The specific structure of the stirring and scraping device is the stirring and scraping device in the above-mentioned embodiments, and its specific structure and usage will not be repeated.
[0046] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A stirring and scraping device, comprising a fixed seat for connecting and fixing with a driving shaft, a scraper connected to the fixed seat, and a position adjustment structure arranged between the fixed seat and the scraper, characterized in that: The position adjustment structure is a stepless adjustment structure, which is a sliding fit structure. The sliding fit structure includes a dovetail block and a dovetail groove respectively arranged on the fixed seat and the scraper. A locking and unlocking device is arranged between the fixed seat and the scraper.
2. The stirring and scraping device according to claim 1, characterized in that: The dovetail block and dovetail groove matching structures are arranged in pairs in at least two pairs, and the corresponding locking and unlocking devices are arranged on or beside each pair of matching structures.
3. The stirring and scraping device according to claim 1 or 2, characterized in that: The locking and unlocking device is a pressing piece which is arranged between the fixing seat and the scraper and enables the fixing seat and the scraper to move away from and approach each other.
4. The stirring and scraping device according to claim 3, characterized in that: The dovetail block and the dovetail groove are clearance-matched, and the locking and unlocking device is a top screw.
5. The stirring and scraping device according to claim 4, characterized in that: The top screw is arranged at the matching position of the dovetail block and the dovetail groove.
6. The stirring and scraping device according to any one of claims 1 to 2, characterized in that: The fixing seat comprises an intermediate connecting plate, and the position adjustment structure and the locking and unlocking device are arranged between the scraper and the intermediate connecting plate.
7. The stirring and scraping device according to any one of claims 1 to 2, characterized in that: The fixing seat is provided with a connecting sleeve for connecting and fixing with the driving shaft.
8. A stirring kettle, comprising a kettle body and a driving shaft arranged in the kettle body, and also comprising a stirring and scraping device drivingly connected to the driving shaft, characterized in that: The stirring and scraping device is the stirring and scraping device described in any one of claims 1 to 7.