Stirrer for EH composite bone cement production

Abstract

The utility model discloses a stirrer for EH composite bone cement production, the EH composite bone cement is composed of powder and liquid, mainly composed of inorganic material HA and organic material EAM, the stirrer comprises a shell, the shell is a hollow cylinder, the upper surface of the shell is provided with a feed pipe, the lower end of the feed pipe penetrates through the upper surface of the shell, and the lower end of the feed pipe is connected with the lower end of the shell. A discharging pipe is arranged on the lower surface of the shell, and a valve is arranged in the discharging pipe to control opening and closing. The stirrer for producing the EH composite bone cement is provided with the two symmetrical stirring rods, the driven wheels are arranged on the surfaces of the stirring rods, the driven wheels are of gear structures, the two driven wheels are engaged with the driving wheel, and the driving wheel is of a tooth-missing gear structure, so that in the rotating process of the driving wheel, the stirring rods on the two sides are driven to rotate asynchronously; and the raw materials in the shell are fully stirred.

Description

Technical Field

[0001] The utility model relates to the technical field of bone cement production, in particular to a stirrer for EH composite bone cement production. Background Art

[0002] Bone cement refers to bone adhesive, which is a medical material used in orthopedic surgery. Because some of the physical properties of bone adhesive and its appearance and properties after solidification are quite similar to white cement used in construction and decoration, it is commonly called bone cement. Its main application range is artificial joint replacement surgery. EH composite bone cement is mainly composed of powder and liquid. The main components of the powder are hydroxyapatite (HA, inorganic material) and polyalkyl methacrylate. The liquid is a medical plasticizer (EAM, organic material). During the production and use process, the powder and liquid are mixed in a certain proportion using a stirrer.

[0003] Current bone cement mixers usually use a single stirring rod or a synchronously rotating double stirring rod to stir the raw materials, so the degree of stirring is limited, the materials cannot be fully stirred evenly, and the stirring efficiency of the bone cement is reduced. Utility Model Content

[0004] The purpose of the utility model is to provide a stirrer for producing EH composite bone cement. The device is provided with symmetrical stirring rods in a shell, and the stirring rods on both sides rotate asynchronously under the drive of a driving wheel to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an agitator for the production of EH composite bone cement, comprising an outer shell, the outer shell being a hollow cylindrical shape, a feed pipe being arranged on the upper surface of the outer shell, the lower end of the feed pipe penetrating through the upper surface of the outer shell, a discharge pipe being arranged on the lower surface of the outer shell, and a valve being arranged inside the discharge pipe to control opening and closing, a stirring structure being arranged inside the outer shell, and the stirring structure being provided with two symmetrical stirring rods to fully stir the raw materials.

[0006] Preferably, the stirring structure includes a motor, which is fixedly mounted on the upper surface of the shell, and the output end of the motor passes through the upper surface of the shell and is connected to a rotating drum, the other end of the rotating drum is rotatably mounted on the bottom surface of the shell, and two stirring rods are symmetrically arranged on both sides of the rotating drum, and the two stirring rods have the same structure.

[0007] By adopting the technical solution, the raw materials can be fully stirred using double stirring rods.

[0008] Preferably, the rotating shaft of the stirring rod is rotatably connected to the inner wall of the outer shell through a bracket, and a driven wheel is provided on the outer surface of the rotating shaft of the stirring rod, the driven wheel is a circular ring structure, and the inner wall of the driven wheel is connected to the surface of the stirring rod through a hollow bracket, and the outer surface of the stirring rod is a gear structure. A driving wheel is provided on the outer surface of the rotating drum, the driving wheel is a circular ring structure, and the driving wheel is connected to the outer surface of the rotating drum through a hollow bracket, and the outer surface of the driving wheel is a toothless gear structure, and the driving wheel is respectively meshed with the stirring rods on both sides.

[0009] By adopting the above technical solution, the toothless driving wheel can drive the stirring rods on both sides to rotate asynchronously, so as to fully stir the raw materials.

[0010] Preferably, a scraping structure is arranged inside the shell, and the scraping structure is provided with a scraping rod and a scraper which rotate synchronously with the rotating drum to scrape the inner wall of the shell.

[0011] By adopting the above technical solution, the scraping structure can be used to prevent the raw materials from hanging on the wall.

[0012] Preferably, the scraper structure includes a scraper rod, which is an arc-shaped structure. Three of the scraper rods are distributed in an annular manner on the outer surface of the drum, and the scraper rods are in contact with the bottom surface of the outer shell. A scraper plate is provided on the upper surface of the scraper rod, and the scraper plate is in contact with the inner wall of the outer shell.

[0013] By adopting the above technical solution, the scraper rod and the scraper plate which rotate synchronously with the rotating drum are used to generate a force on the inner wall of the shell to prevent the raw materials from adhering to the wall.

[0014] Preferably, a feeding structure is arranged inside the shell, and the feeding structure is provided with a feeding tray and an eccentric wheel to prevent feed blockage.

[0015] By adopting the above technical solution, the powder raw material can be evenly fed into the device using the feeding structure.

[0016] Preferably, the feeding structure includes a feeding tray, which is an open cylindrical structure, and a discharge port is arranged in a ring on the surface of the feeding tray, the lower end of the feeding pipe is aligned with the surface of the feeding tray, the feeding tray is connected to the outer surface of the rotating drum, the outer surface of the rotating drum is provided with an eccentric wheel, and the eccentric wheel is in contact with the outer surface of the feeding pipe.

[0017] By adopting the above technical solution, the raw materials can be evenly fed by using the rotating feeding tray.

[0018] Compared with the prior art, the beneficial effects of the utility model are that the agitator for producing EH composite bone cement:

[0019] 1. The device is provided with two symmetrical stirring rods, and driven wheels are provided on the surface of the stirring rods. The driven wheels are gear structures, and the two driven wheels are respectively meshed with the driving wheels. The driving wheels are toothless gear structures, so that when the driving wheels rotate, the stirring rods on both sides are driven to rotate asynchronously, so that the raw materials in the shell are fully stirred;

[0020] 2. The device is provided with an arc-shaped scraper rod that rotates with the drum. The scraper rod exerts force on the bottom surface of the shell to prevent the raw materials from settling at the bottom of the shell. A scraper is provided on the upper surface of the scraper rod to scrape the inner wall of the shell to prevent the raw materials from hanging on the wall during the mixing process.

[0021] 3. The device is provided with a feeding tray, a discharge port is provided on the surface of the feeding tray, and the feeding plate rotates with the drum. The rotating feeding tray evenly feeds the raw materials into the device, and an eccentric wheel is provided on the outer surface of the drum to hit the outer surface of the feeding tube to prevent the powder raw materials from adhering. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the stirring rod of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the driving wheel and the stirring rod of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the feed pipe and feed tray of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the feeding tray of the utility model;

[0027] Figure 6 This is a front view structural schematic diagram of the utility model.

[0028] In the figure: 1. outer shell; 2. feed pipe; 3. discharge pipe; 4. motor; 5. rotating drum; 6. stirring rod; 7. driven wheel; 8. driving wheel; 9. scraper rod; 10. scraper; 11. feeding tray; 12. eccentric wheel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6The utility model provides a technical solution: a stirrer for EH composite bone cement production, including a shell 1, a feed pipe 2, a discharge pipe 3, a motor 4, a rotating drum 5, a stirring rod 6, a driven wheel 7, a driving wheel 8, a scraper rod 9, a scraper 10, a feeding tray 11, and an eccentric wheel 12.

[0031] This device has the effect of uniform feeding, specifically:

[0032] The outer shell 1 is a hollow cylinder, and a feed pipe 2 is arranged on the upper surface of the outer shell 1. The lower end of the feed pipe 2 passes through the upper surface of the outer shell 1, and a discharge pipe 3 is arranged on the lower surface of the outer shell 1. A valve is arranged inside the discharge pipe 3 to control the opening and closing. A feeding structure is arranged inside the outer shell 1. A feeding tray 11 and an eccentric wheel 12 are arranged in the feeding structure to prevent the feed from being blocked. The feeding structure includes a feeding tray 11. The feeding tray 11 is an open cylindrical structure, and a discharge port is arranged in an annular shape on the surface of the feeding tray 11. The lower end of the feed pipe 2 is aligned with the surface of the feeding tray 11. The feeding tray 11 is connected to the outer surface of the rotating drum 5. An eccentric wheel 12 is arranged on the outer surface of the rotating drum 5, and the eccentric wheel 12 contacts the outer surface of the feed pipe 2.

[0033] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, when the device is used to stir bone cement, the powder and liquid raw materials are respectively put into the interior of the shell 1 from the feed pipe 2, and the motor 4 is started. The motor 4 rotates to drive the rotating drum 5 to rotate, and the rotating drum 5 rotates to drive the eccentric wheel 12 to rotate. The rotating eccentric wheel 12 continuously hits the outer surface of the feed pipe 2, so that the feed pipe 2 shakes to prevent the powder raw materials from adhering when passing through the feed pipe 2. The raw materials enter the surface of the feeding disk 11 along the feed pipe 2, and the feeding disk 11 rotates along with the rotating drum 5. The rotating feeding disk 11 throws the raw materials on the surface out of the surface discharge port under the action of centrifugal force, so that the raw materials are evenly put into the interior of the shell 1 for mixing and stirring.

[0034] This device has the effect of full stirring, specifically:

[0035] A stirring structure is arranged inside the shell 1, and the stirring structure is provided with two symmetrical stirring rods 6 to fully stir the raw materials. The stirring structure comprises a motor 4, and the motor 4 is fixedly mounted on the upper surface of the shell 1, and the output end of the motor 4 penetrates the upper surface of the shell 1 and is connected to a rotating drum 5, and the other end of the rotating drum 5 is rotatably mounted on the bottom surface of the shell 1, and two stirring rods 6 are symmetrically arranged on both sides of the rotating drum 5, and the two stirring rods 6 have the same structure, and the rotating shafts of the stirring rods 6 are rotatably connected to the inner wall of the shell 1 through a bracket, and a driven wheel 7 is arranged on the outer surface of the rotating shaft of the stirring rod 6, and the driven wheel 7 is a circular ring structure, and the inner wall of the driven wheel 7 is connected to the surface of the stirring rod 6 through a hollow bracket, and the outer surface of the stirring rod 6 is a gear structure, and a driving wheel 8 is arranged on the outer surface of the rotating drum 5, and the driving wheel 8 is a circular ring structure, and the driving wheel 8 is connected to the outer surface of the rotating drum 5 through a hollow bracket, and the outer surface of the driving wheel 8 is a toothless gear structure, and the driving wheel 8 is respectively meshed with the stirring rods 6 on both sides;

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, after the raw materials enter the shell 1, the motor 4 continues to run, driving the rotating drum 5 to rotate, and the rotating rotating drum 5 drives the driving wheel 8 to rotate. When the driving wheel 8 rotates, the missing teeth on the outer surface drive the driven wheels 7 on both sides to rotate in turn, and the driven wheel 7 drives the stirring rod 6 to rotate, so that the stirring rods 6 on both sides rotate asynchronously, so as to fully stir and mix the raw materials in the shell 1.

[0037] This device has the effect of preventing wall hanging, specifically:

[0038] A scraper structure is arranged inside the housing 1. The scraper structure is provided with a scraper rod 9 and a scraper plate 10 which rotate synchronously with the drum 5 to scrape the inner wall of the housing 1. The scraper structure includes a scraper rod 9. The scraper rod 9 is an arc-shaped structure. Three scraper rods 9 are distributed in an annular manner on the outer surface of the drum 5. The scraper rods 9 are in contact with the bottom surface of the housing 1. The upper surface of the scraper rod 9 is provided with a scraper plate 10, which is in contact with the inner wall of the housing 1.

[0039] Figure 2 and Figure 3 As shown, when the drum 5 rotates, the drum 5 drives the scraper rod 9 on the outer surface to rotate, and the scraper rod 9 exerts a force on the bottom surface of the shell 1 to prevent the raw materials from settling in the shell 1. At the same time, the rotation of the scraper rod 9 drives the scraper 10 on the upper surface to rotate synchronously, exerting a force on the inner wall of the shell 1 to prevent the raw materials from hanging on the wall.

[0040] Working principle: When using the EH composite bone cement production agitator, start the motor 4, the motor 4 drives the drum 5 to rotate, and the raw materials are put in from the feed pipe 2. The raw materials enter the feeding tray 11 along the feeding pipe 2, and the feeding tray 11 rotates along with the drum 5. The rotating feeding tray 11 evenly puts the raw materials into the device, and the symmetrical stirring rods 6 and the drum 5 are arranged in the outer shell 1. The driving wheel 8 drives the stirring rods 6 on both sides to rotate asynchronously, so as to fully stir the raw materials in the outer shell 1. The rotation of the drum 5 drives the arc-shaped scraper rod 9 to rotate, and exerts a force on the bottom surface of the outer shell 1 to prevent the raw materials from settling at the bottom of the outer shell 1, and a scraper 10 is arranged on the upper surface of the scraper rod 9 to scrape the inner wall of the outer shell 1 to prevent the raw materials from hanging on the wall, thereby increasing the overall practicality.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stirrer for producing EH composite bone cement, comprising a housing (1), the housing (1) being of a hollow cylindrical shape, a feed pipe (2) being arranged on the upper surface of the housing (1), the lower end of the feed pipe (2) penetrating the upper surface of the housing (1), a discharge pipe (3) being arranged on the lower surface of the housing (1), and a valve being arranged inside the discharge pipe (3) to control opening and closing, characterized in that: A stirring structure is arranged inside the shell (1), and the stirring structure is provided with two symmetrical stirring rods (6) for fully stirring the raw materials.

2. The agitator for producing EH composite bone cement according to claim 1, characterized in that: The stirring structure comprises a motor (4), the motor (4) being fixedly mounted on the upper surface of the housing (1), and the output end of the motor (4) passing through the upper surface of the housing (1) and connected to a rotating drum (5), the other end of the rotating drum (5) being rotatably mounted on the bottom surface of the housing (1), and two stirring rods (6) being symmetrically arranged on both sides of the rotating drum (5), the two stirring rods (6) having the same structure.

3. The agitator for producing EH composite bone cement according to claim 2, characterized in that: The rotating shaft of the stirring rod (6) is rotatably connected to the inner wall of the outer shell (1) through a bracket. The outer surface of the rotating shaft of the stirring rod (6) is provided with a driven wheel (7). The driven wheel (7) is a circular ring structure, and the inner wall of the driven wheel (7) is connected to the surface of the stirring rod (6) through a hollow bracket. The outer surface of the stirring rod (6) is a gear structure. The outer surface of the rotating drum (5) is provided with a driving wheel (8). The driving wheel (8) is a circular ring structure, and the driving wheel (8) is connected to the outer surface of the rotating drum (5) through a hollow bracket. The outer surface of the driving wheel (8) is a toothless gear structure, and the driving wheel (8) is respectively meshed with the stirring rods (6) on both sides.

4. The agitator for producing EH composite bone cement according to claim 1, characterized in that: A scraping structure is arranged inside the outer shell (1), and the scraping structure is provided with a scraping rod (9) and a scraping plate (10) which rotate synchronously with the rotating drum (5) to scrape the inner wall of the outer shell (1).

5. The agitator for producing EH composite bone cement according to claim 4, characterized in that: The scraping structure comprises a scraping rod (9), the scraping rod (9) being an arc-shaped structure, three scraping rods (9) being distributed in an annular manner on the outer surface of the rotating drum (5), and the scraping rods (9) being in contact with the bottom surface of the outer shell (1), and a scraping plate (10) being provided on the upper surface of the scraping rod (9), and the scraping plate (10) being in contact with the inner wall of the outer shell (1).

6. The agitator for producing EH composite bone cement according to claim 1, characterized in that: A feeding structure is arranged inside the housing (1), and the feeding structure is provided with a feeding tray (11) and an eccentric wheel (12) to prevent feed blockage.

7. The agitator for producing EH composite bone cement according to claim 6, characterized in that: The feeding structure comprises a feeding tray (11), the feeding tray (11) is an open cylindrical structure, and a discharge port is arranged in an annular shape on the surface of the feeding tray (11), the lower end of the feeding pipe (2) is aligned with the surface of the feeding tray (11), the feeding tray (11) is connected to the outer surface of the rotating drum (5), the outer surface of the rotating drum (5) is provided with an eccentric wheel (12), and the eccentric wheel (12) is in contact with the outer surface of the feeding pipe (2).

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