Winnowing structure of Raymond mill

Abstract

The utility model relates to the technical field of Raymond mill equipment, in particular to a winnowing structure of a Raymond mill. The air inlet pipeline is fixedly arranged on the bottom surface of the Raymond mill shell and is communicated with the fan; the supporting seat is fixedly connected to the bottom surface of the air inlet pipeline; the feeding opening is formed in the side wall of the Raymond mill shell. According to the utility model, the plurality of sieve holes I are formed in the surface of the outer sieve mesh at equal angles, and the plurality of sieve holes II with the same size as the sieve holes I and the sieve holes III smaller than the sieve holes I are formed in the surface of the middle sieve mesh at equal angles; a plurality of fourth screen holes identical to the first screen holes in size and a plurality of fifth screen holes smaller than the third screen holes in size are formed in the surface of the inner screen at equal angles, then a second motor and a third motor are started respectively, and a first gear and a second gear can be in meshing transmission with a first gear ring and a second gear ring respectively, so that the size of the hole diameter is adjusted, and the sorting adaptability of the winnowing structure is improved. And the sorting requirements of different materials can be flexibly met, and the universality and flexibility of equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of Raymond mill equipment, in particular to an air separation structure of a Raymond mill. Background Art

[0002] Raymond mill, also known as Raymond mill, is a kind of equipment widely used for crushing and grinding various materials. The working principle of Raymond mill is usually that the grinding roller in the main machine rolls on the grinding ring to grind the material into powder. At the same time, the fan sends the material into the main machine grinding chamber and forms a strong grinding pressure between the grinding roller and the grinding ring, thereby achieving the purpose of crushing. The fine powder of the screened material is collected by the air flow into the powder collector, and the coarse powder is returned to the re-grinding.

[0003] The air separation structure of a traditional Raymond mill usually includes components such as a fan, an analyzer (powder separator), a cyclone separator and connecting pipes. The fine powder of the material is separated from the coarse powder through airflow. However, traditional analyzers often use fixed grading blades or screens, which are difficult to adapt to the sorting requirements of different materials, resulting in low sorting efficiency and large fluctuations in the fineness of the finished product. Utility Model Content

[0004] The purpose of the utility model is to provide a winnowing structure for a Raymond mill to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A winnowing structure of a Raymond mill, comprising:

[0007] Raymond mill housing;

[0008] The air inlet duct is installed and fixed on the bottom surface of the Raymond Mill shell and connected to the fan;

[0009] A support base, fixedly connected to the bottom surface of the air inlet duct;

[0010] The feeding port is arranged on the side wall of the Raymond mill shell;

[0011] The discharge port is set on the top side of the Raymond mill shell;

[0012] The screening unit is arranged inside the Raymond mill shell near the top.

[0013] Preferably, the top surface of the Raymond mill housing is fixedly connected to a motor 1.

[0014] Furthermore, the screening unit includes:

[0015] The outer wall of the rotating disk is rotatably connected to the inner wall of the Raymond mill shell;

[0016] The outer screen has a connecting shaft fixedly connected to its inner bottom surface, the top end of the connecting shaft is drivingly connected to the motor shaft of the motor 1, and a connecting ring is sleeved and fixed on the top side of the outer screen, and the top surface of the connecting ring is detachably fixed to the bottom surface of the rotating disk by bolts;

[0017] The middle screen is plugged into the inner wall of the outer screen, and the top surface is fixedly connected with a gear ring 1;

[0018] The inner screen is plugged into the inner wall of the middle screen, and the top surface is fixedly connected with a second gear ring.

[0019] Furthermore, the top surface of the rotating disk is fixedly connected to motor 2 and motor 3, the motor shafts of motor 2 and motor 3 are respectively connected to rotating shaft 1 and rotating shaft 2, the bottom ends of rotating shaft 1 and rotating shaft 2 are respectively fixedly connected to gear 1 and gear 2, the gear 1 is meshed with gear ring 1 for transmission, and the gear 2 is meshed with gear ring 2 for transmission.

[0020] Preferably, a plurality of sieve holes are provided on the surface of the outer sieve at equal angles.

[0021] Preferably, a plurality of second sieve holes and third sieve holes are provided on the surface of the middle sieve at equal angles.

[0022] Preferably, a plurality of sieve holes four and five are provided on the surface of the inner sieve at equal angles.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] By opening a number of sieve holes 1 at equal angles on the surface of the outer screen, opening a number of sieve holes 2 with the same size as sieve hole 1 and sieve holes 3 with a size smaller than sieve hole 1 at equal angles on the surface of the middle screen, and opening a number of sieve holes 4 with the same size as sieve hole 1 and sieve holes 5 with a size smaller than sieve hole 3 at equal angles on the surface of the inner screen, and then starting motor 2 and motor 3 respectively, gear 1 and gear 2 can be meshed and transmitted with gear ring 1 and gear ring 2 respectively, thereby adjusting the aperture size, improving the sorting adaptability of the air separation structure, being able to flexibly respond to the sorting needs of different materials, and improving the versatility and flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the winnowing structure of a Raymond mill in the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the Raymond Mill shell in the utility model;

[0027] Figure 3 This is a schematic diagram of the screening unit structure in the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the rotating disk in the utility model;

[0029] Figure 5 This is a partial structural diagram of the screening unit in the utility model;

[0030] Figure 6 It is a schematic diagram of the disassembly of the screening unit structure in the utility model.

[0031] In the figure: 100, Raymond mill housing; 110, air inlet duct; 111, support base; 112, feeding port; 113, discharging port; 120, motor 1; 200, screening unit; 210, rotating disk; 211, motor 2; 212, rotating shaft 1; 213, gear 1; 214, motor 3; 215, rotating shaft 2; 216, gear 2; 220, outer screen; 221, connecting shaft; 222, connecting ring; 223, sieve hole 1; 230, middle screen; 231, gear ring 1; 232, sieve hole 2; 233, sieve hole 3; 240, inner screen; 241, gear ring 2; 242, sieve hole 4; 243, sieve hole 5. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 6 In an embodiment of the present invention, a wind separation structure of a Raymond mill includes a Raymond mill housing 100, an air inlet duct 110 connected to the fan is fixedly installed on the bottom surface of the Raymond mill housing 100, and a support base 111 is fixedly connected to the bottom surface of the air inlet duct 110. A feeding port 112 is provided on the side wall of the Raymond mill housing 100, and a discharge port 113 is provided on the top side of the Raymond mill housing 100. A screening unit 200 is provided near the top of the interior of the Raymond mill housing 100.

[0034] Specifically, the material is fed into the Raymond mill housing 100 from the feeding port 112. After the material is ground by the grinding mechanism inside it, the circulating air generated by the fan blowing in from the air inlet duct 110 brings the material into the upper screening unit 200 position inside the Raymond mill housing 100. By adjusting the aperture size in the screening unit 200, the passability of materials of different particle sizes can be controlled. Materials with fineness that meet the requirements pass through the screening unit 200 with the air flow and are discharged through the discharge port 113. Materials that are too coarse fall back to the grinding area below the Raymond mill housing 100 for re-grinding.

[0035] Example

[0036] like Figure 3-6 As shown, in this embodiment, the screening unit 200 includes a rotating disk 210 whose outer wall is rotatably connected to the inner wall of the Raymond mill housing 100, an outer screen 220 is provided below the rotating disk 210, and a connecting ring 222 is fixed to the top side of the outer screen 220, and the top surface of the connecting ring 222 is detachably fixed to the bottom surface of the rotating disk 210 by bolts, and a middle screen 230 is inserted into the inner wall of the outer screen 220, and a gear ring 1 231 is fixedly connected to the top surface of the middle screen 230, and an inner screen 240 is inserted into the inner wall of the middle screen 230, and a gear ring 241 is fixedly connected to the top surface of the inner screen 240, and the top surface of the rotating disk 210 is fixedly connected to the motor 21 1 and motor three 214, the motor shafts of motor two 211 and motor three 214 are respectively connected to rotating shaft one 212 and rotating shaft two 215, and the bottom ends of rotating shaft one 212 and rotating shaft two 215 are respectively fixedly connected to gear one 213 and gear two 216, gear one 213 is meshed with gear ring one 231 for transmission, and gear two 216 is meshed with gear ring two 241 for transmission, and a plurality of sieve holes one 223 are opened at equal angles on the surface of the outer screen 220, a plurality of sieve holes two 232 and sieve holes three 233 are opened at equal angles on the surface of the middle screen 230, and a plurality of sieve holes four 242 and sieve holes five 243 are opened at equal angles on the surface of the inner screen 240.

[0037] In this embodiment, the apertures of the sieve hole 1 223, the sieve hole 232 and the sieve hole 4 242 are the same, and the apertures of the sieve hole 1 223, the sieve hole 3 233 and the sieve hole 5 243 are gradually reduced. When it is necessary to screen materials with larger particle sizes, the motor 211 and the motor 3 214 are started, so that the motor shaft of the motor 211 is driven to the rotating shaft 1 212, and the motor shaft of the motor 3 214 is driven to the rotating shaft 2 215, so that the gear 1 213 is meshed with the gear ring 1 231 for transmission, and the gear 2 216 is meshed with the gear ring 2 24 1 meshing transmission, so that the sieve hole 1 223, the sieve hole 2 232 and the sieve hole 4 242 correspond to each other. At this time, the ground material is screened by the aperture of the sieve hole 1 223 under the action of the circulating air. When it is necessary to screen materials with slightly smaller particle size, the motor 211 and the motor 3 214 are started to make the sieve hole 1 223, the sieve hole 3 233 and the sieve hole 4 242 correspond to each other. When it is necessary to screen smaller particle size, the motor 3 214 can be started again to make the sieve hole 1 223, the sieve hole 3 233 and the sieve hole 5 243 correspond to each other.

[0038] like Figure 2-3 As shown, in this embodiment, the top surface of the Raymond mill housing 100 is fixedly connected to the motor 120, the outer wall of the rotating disk 210 is rotatably connected to the inner wall of the Raymond mill housing 100, and the inner bottom surface of the outer screen 220 is fixedly connected to the connecting shaft 221, and the top end of the connecting shaft 221 is transmission-connected to the motor shaft of the motor 120.

[0039] During specific implementation, start motor 120 so that the motor shaft of motor 120 is transmitted to the connecting shaft 221, and the connecting shaft 221 drives the outer screen 220 to rotate. The connecting shaft 221 is fixed together with the rotating disk 210, so that the outer screen 220, the middle screen 230 and the inner screen 240 rotate synchronously, increasing the contact frequency and angle of the powder with the three filter screens, thereby improving the screening efficiency to a certain extent.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A winnowing structure of a Raymond mill, characterized in that: include: Raymond mill housing (100); An air inlet duct (110) is fixed to the bottom surface of the Raymond mill housing (100) and is connected to the fan; A support base (111) is fixedly connected to the bottom surface of the air inlet duct (110); A feeding port (112) is provided on a side wall of the Raymond mill housing (100); A discharge port (113) is provided on the top side of the Raymond mill housing (100); The screening unit (200) is arranged inside the Raymond mill housing (100) near the upper position.

2. The winnowing structure of the Raymond mill according to claim 1 is characterized in that: The top surface of the Raymond mill housing (100) is fixedly connected to a motor 1 (120).

3. The winnowing structure of the Raymond mill according to claim 1 is characterized in that: The screening unit (200) comprises: The outer wall of the rotating disk (210) is rotatably connected to the inner wall of the Raymond mill housing (100); The outer screen (220) has a connecting shaft (221) fixedly connected to its inner bottom surface, the top end of the connecting shaft (221) is drivingly connected to the motor shaft of the motor 1 (120), the top side of the outer screen (220) is sleeved and fixed with a connecting ring (222), and the top surface of the connecting ring (222) is detachably fixed to the bottom surface of the rotating disk (210) by bolts; The middle screen (230) is inserted into the inner wall of the outer screen (220), and the top surface is fixedly connected to a gear ring (231); The inner screen (240) is inserted into the inner wall of the middle screen (230), and the top surface thereof is fixedly connected with a second gear ring (241).

4. The winnowing structure of the Raymond mill according to claim 3 is characterized in that: The top surface of the rotating disk (210) is fixedly connected to a second motor (211) and a third motor (214); the motor shafts of the second motor (211) and the third motor (214) are respectively connected to a first rotating shaft (212) and a second rotating shaft (215); the bottom ends of the first rotating shaft (212) and the second rotating shaft (215) are respectively fixedly connected to a first gear (213) and a second gear (216); the first gear (213) is meshed with the first gear ring (231) for transmission; the second gear (216) is meshed with the second gear ring (241) for transmission.

5. The winnowing structure of the Raymond mill according to claim 3 is characterized in that: The surface of the outer screen (220) is provided with a plurality of screen holes (223) at equal angles.

6. The winnowing structure of the Raymond mill according to claim 3 is characterized in that: The surface of the middle screen (230) is provided with a plurality of second screen holes (232) and third screen holes (233) at equal angles.

7. The winnowing structure of the Raymond mill according to claim 3 is characterized in that: The surface of the inner screen (240) is provided with a plurality of screen holes four (242) and screen holes five (243) at equal angles.

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