Slitting knife structure
By designing a slitting knife structure, the materials close to the inner wall of the pot in the wet granulator are cut with inclined and vertical blades, the problems of insufficient material cutting and large particle size gap are solved, and the particle size of the material is balanced.
Patent Information
- Application Number
- CN202421453422.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-06-24
AI Technical Summary
In the wet granulator, the contact between the slitting knife and the inner wall of the pot and the mixing paddle leads to insufficient cutting of the material, resulting in a large gap in particle size of the output material.
A slitting knife structure is designed, including a rotating shaft, a first slitting assembly and a second slitting assembly, the blade of the first slitting assembly is inclined toward the bearing, and the blade of the second slitting assembly is perpendicular to the rotation axis, through which Structurally cut materials close to the inner wall of the pot.
Effectively cut the materials close to the inner wall of the pot body caused by the agitation of the paddle, so as to avoid large-particle materials close to the inner wall of the pot body for a long time, resulting in the particle size of the produced materials approaching balance.
Smart Images
Figure CN222446727U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pharmaceutical equipment, in particular to a cutting knife structure. Background Art
[0002] Wet granulator is a kind of machine suitable for mixing powders and granulating powders with adhesives in the pharmaceutical, chemical, food and other industries. The whole process consists of two steps: mixing and granulation. The materials rotate around the rotating axis of the mixing paddle under the stirring of the mixing paddle at the bottom of the pot and are fully mixed. The slitting knife structure on the side wall of the pot rotates to break up the agglomerated materials. Under the centrifugal force of the paddle, more materials are close to the inner wall of the pot. In order to prevent the slitting knife from contacting the inner wall of the pot and the mixing paddle, the blade of the slitting knife will be a distance away from the inner wall of the pot, resulting in insufficient cutting of the materials close to the inner wall of the pot, or no cutting, resulting in a large difference in the particle size of the final output materials. Utility Model Content
[0003] The main purpose of the utility model is to provide a slitting knife structure, aiming to solve or partially solve the above technical problems.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A slitting knife structure is applied to a wet granulator, wherein the wet granulator is provided with a pot body, and the slitting knife structure comprises:
[0006] A rotating shaft, the middle part of which is rotatably connected to the wall of the pot body through a bearing, one end of the rotating shaft extends out of the pot body, and the other end of the rotating shaft extends toward the middle part of the pot body;
[0007] A first cutting assembly is provided on the side of the bearing adjacent to the middle of the pot body, wherein the first cutting assembly arranges at least two first blades around the axis of the rotating shaft, the angle between the radial lines of each two adjacent first blades is consistent, and the radial line of each first blade is inclined toward the bearing;
[0008] At least two second slitting components are arranged on the side of the first slitting component away from the bearing, and the second slitting component arranges at least two second blades in a circle around the axis of the rotating shaft, the angle between the radial lines of each two adjacent second blades is consistent, and the radial line of each blade is perpendicular to the axis of the rotating shaft.
[0009] As a further improvement of the present invention, the first slitting assembly is also provided with a first mounting seat, the first mounting seat is sleeved on the side wall of the rotating shaft, and the side wall of the first mounting seat is respectively connected to one end of each first blade; the second slitting assembly is also provided with a second mounting seat, the second mounting seat is sleeved on the side wall of the rotating shaft, and the side wall of the second mounting seat is respectively connected to one end of each second blade.
[0010] As a further improvement of the present invention, the first mounting seat and the second mounting seat are respectively provided with a first circular hole and a second circular hole which are interference fit with the side wall of the rotating shaft, the side wall of the rotating shaft is provided with a clamping strip parallel to its axis, the first circular hole and the second circular hole are respectively provided with a first clamping groove and a second clamping groove which match the clamping strip, the first clamping groove and the second clamping groove respectively clamp the clamping strip to prevent the first slitting assembly and the second slitting assembly from being out of frequency when rotating with the rotating shaft.
[0011] As a further improvement of the present invention, the length of the first blade projected to the axis of the rotating shaft does not exceed the length of the first mounting seat projected to the axis of the rotating shaft to prevent the first blade from contacting the side wall of the pot body.
[0012] As a further improvement of the present invention, the radial lengths of the second blades of the second slitting components arranged in the order from adjacent to the bearing to away from the bearing decrease one by one, and the length of each second blade of the same second slitting component is consistent.
[0013] As a further improvement of the present invention, a threaded section is provided at the end of the rotating shaft adjacent to the middle of the pot body, and the threaded section is threadedly connected to a nut to limit the first cutting assembly and each second cutting assembly to the rotating shaft.
[0014] As a further improvement of the present invention, a coupling is provided on the rotating shaft at a side of the bearing away from the first slitting assembly or the second slitting assembly.
[0015] The technical solution provided by the utility model may have the following beneficial effects:
[0016] During use of the utility model, the first cutting component is arranged adjacent to the bearing, and each first blade of the first cutting component is inclined toward the bearing, so that the first cutting component can cut the material close to the inner wall of the pot body caused by the stirring of the paddle blades during the rotation of the rotating shaft, thereby preventing large particles of material from being close to the inner wall of the pot body for a long time, resulting in the particle size of the output material being not close to a balance. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.
[0018] Figure 1 It is a three-dimensional structural schematic diagram of a slitting knife structure;
[0019] Figure 2 yes Figure 1A schematic diagram of the three-dimensional structure of the first cutting component;
[0020] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the second cutting component;
[0021] Figure 4 It is a side view schematic diagram of a slitting knife structure;
[0022] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional structure of the central rotating shaft;
[0023] Reference numerals:
[0024] 100, pot body;
[0025] 1. Rotating shaft; 11. Clip strip; 12. Threaded section; 2. Bearing; 3. First slitting assembly; 31. First blade; 32. First mounting seat; 321. First circular hole; 322. First slot; 4. Second slitting assembly; 41. Second blade; 42. Second mounting seat; 421. Second circular hole; 422. Second slot; 5. Nut; 6. Coupling. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments and features in the embodiments of the utility model can be combined with each other. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0027] Figure 1 An embodiment of a slitting knife structure of the utility model is shown, see Figure 1 In this embodiment, the slitting knife structure is applied to a wet granulator, the wet granulator is provided with a pot body 100, the slitting knife structure is arranged in the pot body 100, and the slitting knife mechanism comprises: a rotating shaft 1, a first slitting assembly 3 and a second slitting assembly 4;
[0028] Among them, see Figure 1The middle part of the rotating shaft 1 is rotatably connected to the wall of the pot body 100 through the bearing 2, one end of the rotating shaft 1 extends out of the pot body 100 and is connected to the external driving member, and the other end of the rotating shaft 1 extends toward the middle of the pot body 100; the first slitting assembly 3 is arranged on the side of the bearing 2 adjacent to the middle of the pot body 100, and the first slitting assembly 3 arranges at least two first blades 31 in a ring around the axis of the rotating shaft 1, the angle between the radial lines of each adjacent two first blades 31 is consistent, and the radial line of each first blade 31 is inclined toward the bearing 2; the second slitting assembly 4 is provided with at least two and both are arranged on the side of the first slitting assembly 3 away from the bearing 2, the second slitting assembly 4 arranges at least two second blades 41 in a ring around the axis of the rotating shaft 1, the angle between the radial lines of each adjacent two second blades 41 is consistent, and the radial line of each second blade 41 is perpendicular to the axis of the rotating shaft 1. By providing the first blade 31 inclined toward the bearing 2 , the material close to the side wall of the pot body 100 is cut as the rotating shaft 1 rotates, thereby improving the efficiency of the material breaking process.
[0029] Further, see Figure 2 and Figure 3 The first slitting component 3 is also provided with a first mounting seat 32, which is sleeved on the side wall of the rotating shaft 1, and the side walls of the first mounting seat 32 are respectively connected to one end of each first blade 31; the second slitting component 4 is also provided with a second mounting seat 42, which is sleeved on the side wall of the rotating shaft 1, and the side walls of the second mounting seat 42 are respectively connected to one end of each second blade 41; while facilitating the assembly of the first slitting component 3 and the second slitting component 4, when the first blade 31 or the second blade 41 is damaged, the corresponding first mounting seat 32 or the second mounting seat 42 can be directly removed.
[0030] Further, see Figure 2 and Figure 3 The first mounting seat 32 is provided with a first circular hole 321 which is interference fit with the side wall of the rotating shaft 1, so that the first mounting seat 32 is sleeved on the rotating shaft 1; the second mounting seat 42 is provided with a second circular hole 421 which is interference fit with the side wall of the rotating shaft 1, so that the second mounting seat 42 is sleeved on the rotating shaft 1.
[0031] Further, see Figures 2 to 4 The rotating shaft 1 is provided with at least two clamping strips 11 parallel to its axis, the first circular hole 321 is provided with a first clamping groove 322 matching each clamping strip 11, the second circular hole 421 is provided with a second clamping groove 422 matching each clamping strip 11, each first clamping groove 322 and each second clamping groove 422 respectively clamp each clamping strip 11 to prevent the first slitting component 3 and the second slitting component 4 from being out of frequency when rotating with the rotating shaft 1.
[0032] Optionally, the first cutting component 3 is provided with four first blades 31, and the angle between the radial lines of each two adjacent first blades 31 is 90°; the second cutting component is provided with two second blades 41, and the angle between the radial lines of each two adjacent second blades 41 is 180°, and the second blades 41 of each two adjacent second cutting components 4 are staggered, and the angle between the radial lines of each two adjacent second blades 41 in each two adjacent second cutting components 4 is 90°.
[0033] Optionally, the rotating shaft 1 is provided with four clamping strips 11, and a clamping strip 11 is set at every 90° arc on the side wall of the rotating shaft 1. The corresponding first circular hole 321 is provided with four clamping grooves, and a first clamping groove 322 is set at every 90° arc on the inner wall of the first circular hole 321, and a second clamping groove 422 is set at every 90° arc on the inner wall of the second circular hole 421, so that the second blades 41 are staggered at 90°, so that the process of cutting materials by each first blade 31 and each second blade 41 is relatively balanced.
[0034] Furthermore, the length of the first blade 31 projected to the axis of the rotating shaft 1 does not exceed the length of the first mounting seat 32 projected to the axis of the rotating shaft 1, so as to prevent the first blade 31 from contacting the side wall of the pot body 100; the length of the second blade 41 projected to the axis of the rotating shaft 1 does not exceed the length of the second mounting seat 42 projected to the axis of the rotating shaft 1, so as to ensure that there is a sufficient distance between the second blades 41 of two adjacent second cutting components 4, so as to avoid the particle size of the material after being broken up being too small.
[0035] Further, see Figure 4 The radial lengths of the second blades 41 of the second cutting components 4 arranged in the order of being close to the bearing 2 and away from the bearing 2 are gradually reduced, and the lengths of each second blade 41 of the same second cutting component 4 are the same. The material rotates around the center of the pot body 100 with the stirring blade. Due to the existence of centrifugal force, there will be more material close to the inner wall of the pot body 100. Such a design can increase the cutting depth on the side close to the inner wall of the pot body 100, so that the particle size of the material after cutting is close to uniform.
[0036] Further, see Figure 5 A threaded section 12 is provided at the end of the rotating shaft 1 adjacent to the middle of the pot body 100, and the threaded section 12 is threadedly connected to a nut 5 to limit the first cutting component 3 and each second cutting component 4 to the rotating shaft 1, thereby achieving the fixation of the first cutting component 3, the second cutting component 4 and the rotating shaft 1.
[0037] Further, see Figure 5, the rotating shaft 1 is located outside the pot body 100, and a coupling 6 is arranged on the side of the bearing 2 away from the first slitting assembly 3 or the second slitting assembly 4. The coupling 6 can reduce the vibration of the rotating shaft 1 when the motor drives the rotating shaft 1, thereby reducing the influence on the sealing between the bearing 2 and the wall of the pot body 100, and avoiding leakage at the connection between the bearing 2 and the pot body 100; at the same time, the stress generated when the first slitting assembly 3 and the second slitting assembly 4 rotate with the rotating shaft 1 is transferred, and the rotating shaft 1 is prevented from breaking due to excessive bearing stress; secondly, when leakage occurs at the connection between the bearing 2 and the inner wall of the pot body 100, the coupling 6 can block part of the dust generated by the leakage and flying toward the motor, and avoid the motor from being damaged due to excessive contact with such dust, so as to reduce the loss when such a situation occurs.
[0038] In this embodiment, the first cutting component 3 is arranged adjacent to the bearing 2, and each first blade 31 of the first cutting component 3 is inclined toward the bearing 2, so that the first cutting component 3 can cut the material close to the inner wall of the pot body 100 caused by the stirring of the paddle blades during the rotation of the rotating shaft 1, thereby preventing large particles from being close to the inner wall of the pot body 100 for a long time, resulting in the particle size of the output material being not close to a balance.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A cutting blade structure, applied to a wet granulator, wherein the wet granulator is provided with a pot body, characterized in that: The slitting knife structure comprises: A rotating shaft, the middle part of which is rotatably connected to the wall of the pot body through a bearing, one end of the rotating shaft extends out of the pot body, and the other end of the rotating shaft extends toward the middle part of the pot body; A first cutting assembly is provided on the side of the bearing adjacent to the middle of the pot body, wherein the first cutting assembly arranges at least two first blades around the axis of the rotating shaft, the angle between the radial lines of each two adjacent first blades is consistent, and the radial line of each first blade is inclined toward the bearing; At least one second slitting assembly is arranged on the side of the first slitting assembly away from the bearing, and the second slitting assembly arranges at least two second blades in a circle around the axis of the rotating shaft, the angles between the radial lines of each two adjacent second blades are consistent, and the radial line of each blade is perpendicular to the axis of the rotating shaft.
2. The slitting knife structure according to claim 1, characterized in that: The first cutting assembly is also provided with a first mounting seat, which is sleeved on the side wall of the rotating shaft, and the side wall of the first mounting seat is respectively connected to one end of each first blade; the second cutting assembly is also provided with a second mounting seat, which is sleeved on the side wall of the rotating shaft, and the side wall of the second mounting seat is respectively connected to one end of each second blade.
3. The slitting knife structure according to claim 2, characterized in that: The first mounting seat and the second mounting seat are respectively provided with a first circular hole and a second circular hole which are interference fit with the side wall of the rotating shaft, the side wall of the rotating shaft is provided with a clamping strip parallel to its axis, the first circular hole and the second circular hole are respectively provided with a first clamping groove and a second clamping groove which match the clamping strip, the first clamping groove and the second clamping groove respectively clamp the clamping strip to limit the first slitting assembly and the second slitting assembly.
4. The slitting knife structure according to claim 3, characterized in that: The length of the first blade projected to the axis of the rotating shaft does not exceed the length of the first mounting seat projected to the axis of the rotating shaft to prevent the first blade from contacting the side wall of the pot body.
5. The slitting knife structure according to claim 3, characterized in that: The radial lengths of the second blades of the second slitting components decrease one by one in the order from adjacent to the bearing to away from the bearing, and the lengths of each second blade of the same second slitting component are consistent.
6. The slitting knife structure according to claim 5, characterized in that: The end of the rotating shaft adjacent to the middle of the pot body is provided with a threaded section, and the threaded section is threadedly connected with a nut to limit the first cutting assembly and each second cutting assembly to the rotating shaft.
7. The slitting knife structure according to claim 6, characterized in that: A coupling is arranged on the rotating shaft at a side of the bearing away from the first slitting assembly or the second slitting assembly.