A sand mill discharge filter

Abstract

The utility model discloses a sand mill discharge port filter device relates to sand mill technical field, including connecting pipe, shell and hose, hose flexible connection is in between connecting pipe and shell, and flexible connection allows the variable inclination angle to form between connecting pipe and shell, still includes screening subassembly and transmission subassembly, and screening subassembly rotation setting is in the shell, and screening subassembly includes the rotation cylinder that rotation setting is in the shell and the fine filter screen and the coarse filter screen that are nested in rotation cylinder inside in proper order, and transmission subassembly includes the gear wheel that fixed connection is at motor output, and the gear ring that fixed connection is at the rotation cylinder outer wall and is connected with the gear meshing, the utility model discloses through shell inclination angle adjustable, has guaranteed the smooth flow of material, and through motor drive multistage nested filter screen rotation simultaneously, has realized the automatic multistage screening and separation of material, has prevented the jam, has improved the filtration efficiency and production continuity.

Description

Technical Field

[0001] This utility model relates to the field of sand mill technology, and in particular to a sand mill outlet filtration device. Background Technology

[0002] Sand mills are widely used grinding equipment in industrial production, especially in the fields of coatings, inks and pigments. They are used to grind material particles to the required fineness. After grinding, the slurry containing particles of different sizes needs to be discharged from the outlet. In order to ensure product quality, a filter device is installed at the outlet of the sand mill to remove large particles or insufficiently ground materials generated during the grinding process. The most common method is to install a static filter screen.

[0003] However, this static filtration method has obvious shortcomings. The slurry discharged from the sand mill has a certain viscosity. When it flows through the static filter screen, the material tends to accumulate on the surface of the mesh, causing the filter screen to become clogged quickly. This forces operators to frequently stop production to disassemble and clean the filter screen, which seriously affects the continuity of production and overall efficiency. In addition, this single static filter screen is also difficult to achieve multi-level separation of materials.

[0004] Meanwhile, when existing filter devices are connected to the discharge port of sand mills, the installation angle is often fixed. For materials with different viscosities or flow characteristics, the fixed angle cannot guarantee that the materials can flow smoothly into the filter device. When the material has poor flowability, it is easy to accumulate and stagnate at the connection point. This not only aggravates the subsequent filter clogging problem, but also affects the uniform discharge of materials.

[0005] Therefore, this utility model proposes a filter device for the discharge port of a sand mill to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of a sand mill outlet filter device, the filter screen has a static structure, which is prone to clogging and production interruption, and the fixed installation angle causes poor material flow and easy accumulation. The present invention aims to provide a sand mill outlet filter device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a filter device for the discharge port of a sand mill, including: a connecting pipe, a shell and a hose, the hose being flexibly connected between the connecting pipe and the shell, the flexible connection allowing a variable tilt angle between the connecting pipe and the shell, and also including a screening component, which is rotatably disposed inside the shell; The screening component includes a rotating cylinder rotatably disposed within a housing, and a fine filter screen and a coarse filter screen nested sequentially inside the rotating cylinder; The motor is fixedly mounted on the outer wall of the housing; The transmission assembly includes a gear fixedly connected to the output end of the motor, and a gear ring fixedly connected to the outer wall of the rotating cylinder and meshing with the gear. After the motor starts, the meshing transmission between the gear and the gear ring drives the entire screening assembly to rotate. The mounting base is fixedly connected to the bottom of the connecting pipe; The rotating sleeve is rotatably connected to the fixed base; The protective cover is fixedly fitted onto the outer shell and surrounds the gear and gear ring; A fixing rod is provided, with one end of which passes through the rotating sleeve and the other end of which is fixedly connected to the protective cover.

[0008] Preferably, a rotating ring is provided at one end of the fine filter screen, and one end of the rotating cylinder and the coarse filter screen are fixedly connected to the rotating ring, which ensures the coaxiality and synchronization of the rotating cylinder, the fine filter screen and the coarse filter screen during rotation, and improves the stability of the screening mechanism operation.

[0009] Preferably, a guide bucket is fixedly connected to the other end of the fine filter screen. The guide bucket is used to collect the medium-sized material that has been filtered through the fine filter screen. The medium-sized material is guided along the guide structure of the guide bucket to a specific discharge port for discharge, which avoids the accumulation of material in the fine filter screen and realizes the effective separation of medium-sized material.

[0010] Preferably, as a specific connection method, the rotating sleeve is rotatably connected to the inside of the fixed seat via a pin. The pin connection structure is simple and reliable, allowing the rotating sleeve to rotate flexibly within the fixed seat. When the locking screw is loosened, the tilt angle of the outer shell can be freely adjusted.

[0011] Preferably, the bottom of the rotating sleeve is threaded with a locking screw for locking the fixing rod inside the rotating sleeve. When it is necessary to lock the tilt angle of the outer shell, tighten the locking screw. The locking screw presses against the fixing rod and locks the fixing rod on the top wall inside the rotating sleeve. The frictional locking force generated by the top wall of the rotating sleeve on the fixing rod securely positions the fixing rod, thereby reliably fixing the tilt angle of the outer shell.

[0012] Preferably, an opening is provided on the cylinder wall in the middle of the outer shell for the gear to pass through. The gear passes through the opening and meshes with the gear ring. After the motor starts, the meshing of the gear and the gear ring drives the screening component to rotate for material screening.

[0013] Preferably, the mesh size of the coarse filter screen is larger than that of the fine filter screen. After the material enters from the connecting pipe, it first enters the innermost coarse filter screen for the first coarse screening. The coarse particles with a particle size larger than the mesh size of the coarse filter screen are filtered out, while the particles with a particle size smaller than the mesh size of the coarse filter screen pass through and enter the fine filter screen for the second fine screening, thus realizing the step-by-step screening and filtration of the material.

[0014] Preferably, the lengths of the rotating drum, fine filter screen, and coarse filter screen are set from shortest to longest. By setting different lengths and combining them with the setting of the guide bucket, the materials filtered by the coarse and fine filters in sequence, as well as the materials passing through the fine filter screen, can be discharged from different axial positions, realizing the automatic separation and diversion collection of the three materials.

[0015] This utility model has the following beneficial effects: 1. This utility model, by setting a fixed base, a rotating sleeve rotatably connected to the fixed base, a fixed rod passing through the rotating sleeve, and a locking screw for locking the fixed rod, together constitute an angle adjustment mechanism, which solves the problem in the prior art where the connection angle between the filter device and the outlet of the sand mill is fixed, resulting in poor material flow and easy accumulation. It achieves the technical effect of making the tilt angle of the outer shell adjustable and ensuring that the material enters the screening system smoothly.

[0016] 2. This utility model, by setting up a motor, transmission components, a rotating cylinder, and fine and coarse filter screens nested in the rotating cylinder, constitutes a rotary multi-stage screening mechanism, which solves the problems of low efficiency and easy clogging caused by the single filtration structure and reliance on the material's own weight to flow through the static filter screen in the prior art. By driving the filter screen to rotate through the motor, the technical effect of automatically screening and separating materials in multiple stages is achieved.

[0017] 3. This utility model, by combining an adjustable tilt angle with a rotary multi-stage screening system and setting up a guide hopper and filter screens of different lengths, solves the problem in the prior art that it is impossible to automatically separate and discharge materials of different particle sizes. It achieves the purpose of automatically separating coarse, medium and fine materials to different positions. The structure is reasonably designed and highly automated, which significantly improves the filtration efficiency and continuity of the sand mill output. Attached Figure Description

[0018] Figure 1 This is a perspective view of the front side of a sand mill outlet filter device proposed in this utility model.

[0019] Figure 2 This is a partial structural breakdown diagram of the screening component of a sand mill outlet filtration device proposed in this utility model.

[0020] Figure 3 This is a cross-sectional view of the outer shell of a sand mill outlet filter device proposed in this utility model.

[0021] Figure 4 This is a cross-sectional view of the screening component of a sand mill outlet filter device proposed in this utility model.

[0022] Figure 5 This is a partial structural diagram of the outer shell tube of a sand mill outlet filter device proposed in this utility model.

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0024] Figure 7 This is a partial structural diagram of the hose of a sand mill outlet filter device proposed in this utility model.

[0025] Figure 8 for Figure 7 Enlarged view of section B in the middle.

[0026] Figure 9 This is a partial structural breakdown diagram of the rotating sleeve of a sand mill outlet filter device proposed in this utility model.

[0027] Legend: 1. Outer shell; 2. Rotating ring; 3. Screening assembly; 301. Fine filter screen; 302. Guide hopper; 4. Rotating cylinder; 5. Coarse filter screen; 6. Motor; 7. Transmission assembly; 701. Gear; 702. Gear ring; 8. Hose; 9. Connecting pipe; 10. Protective cover; 11. Fixing rod; 12. Fixing base; 13. Rotating sleeve; 14. Locking screw; 15. Opening. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0029] Please refer to Figures 1 to 9 This utility model provides a sand mill outlet filtration device, including a connecting pipe 9, a housing 1 and a hose 8. The hose 8 is flexibly connected between the connecting pipe 9 and the housing 1. It also includes a screening component 3, which is rotatably disposed inside the housing 1. The connecting pipe 9 is used to connect to the outlet of the sand mill, and the housing 1 is used to accommodate the screening component 3 inside. Please refer to Figure 1 , Figure 5 and Figure 7 The sand mill outlet filter device also includes a fixed base 12 fixedly connected to the bottom of the connecting pipe 9, a rotating sleeve 13 rotatably connected inside the fixed base 12, a protective cover 10 fixedly sleeved on the outer shell 1, one end of the fixing rod 11 passing through the rotating sleeve 13, and the other end of the fixing rod 11 fixedly connected to the protective cover 10. The rotating sleeve 13 can rotate freely, thereby facilitating the free adjustment of the tilt angle of the outer shell 1.

[0030] Please refer to Figure 1, Figure 2 and Figure 4 The screening component 3 includes a rotating cylinder 4 rotatably disposed within the outer casing 1, and a fine filter screen 301 and a coarse filter screen 5 nested sequentially inside the rotating cylinder 4. The mesh size of the coarse filter screen 5 is larger than that of the fine filter screen 301. The lengths of the rotating cylinder 4, the fine filter screen 301, and the coarse filter screen 5 are arranged from shortest to longest. After the material enters, it first passes through the coarse screen of the coarse filter screen 5. Smaller materials then enter the fine filter screen 301 for fine screening. A rotating ring 2 is provided on one end of the fine filter screen 301. One end of the rotating cylinder 4 and the coarse filter screen 5 are fixedly connected to the rotating ring 2 to ensure that the rotating cylinder 4 rotates... During operation, the fine filter screen 301 and the coarse filter screen 5 rotate synchronously with the rotating cylinder 4 to ensure the coaxiality and synchronicity of the rotating cylinder 4, the fine filter screen 301, and the coarse filter screen 5, thereby improving the stability of the screening mechanism. A guide bucket 302 is fixedly connected to the other end of the fine filter screen 301. The guide bucket 302 is used to collect the medium-sized particles that have passed through the fine filter screen 301. The medium-sized particles are guided along the guide structure of the guide bucket 302 to a specific discharge port, preventing material accumulation within the fine filter screen 301 and achieving effective separation of medium-sized particles.

[0031] Please refer to Figure 1 , Figure 3 and Figure 6 The sand mill outlet filter device also includes a protective cover 10 fixedly sleeved on the outer shell (1), and a motor 6 and a transmission component 7 for driving the screening component 3 to rotate. The motor 6 is fixedly installed on the outer wall of the outer shell 1. The transmission component 7 includes a gear 701 fixedly connected to the output end of the motor 6, and a gear ring 702 fixedly connected to the outer wall of the rotating cylinder 4 and meshing with the gear 701. An opening 15 is provided on the cylinder wall in the middle of the outer shell 1 for the gear 701 to pass through. After the gear 701 passes through the opening 15, it meshes with the gear ring 702. The motor 6 drives the screening component 3 to rotate for material screening through the meshing of the gear 701 and the gear ring 702. The protective cover 10 is sleeved on the outer shell 1 and surrounds the gear 701 and the gear ring 702 to protect the transmission component 7.

[0032] Please refer to Figure 7 , Figure 8 and Figure 9 The bottom of the rotating sleeve 13 is threaded with a locking screw 14 for locking the fixing rod 11 inside the rotating sleeve 13. When the locking screw 14 is tightened, the locking screw 14 presses against the fixing rod 11 and locks the fixing rod 11 to the top wall inside the rotating sleeve 13. The fixing rod 11 is locked by the frictional locking force generated by the top wall of the rotating sleeve 13 against the fixing rod 11, thereby fixing the outer shell 1 and the protective cover 10 at the required tilt angle.

[0033] Working principle: When using the equipment, one end of the connecting pipe 9 is fixed to the discharge port of the sand mill. Since the fixed seat 12 is fixed below the connecting pipe 9, the rotating sleeve 13 is rotatably mounted inside the fixed seat 12 via a pin. Therefore, the rotating sleeve 13 can rotate freely inside the fixed seat 12 via the pin. One end of the fixing rod 11 is passed through the inside of the rotating sleeve 13, and the other end of the fixing rod 11 is fixed to the bottom of the protective cover 10. Due to the weight of the outer shell 1 and the protective cover 10, the hose 8 cannot support the outer shell 1 and the protective cover 10. Moving the fixing rod 11 pulls the protective cover 10 and the outer shell 1 closer towards the connecting pipe 9, cooperating with the rotating sleeve 13. When rotated, the end of the outer shell 1 away from the connecting pipe 9 tilts downward, thereby changing the relative angle between the outer shell 1 and the connecting pipe 9. At the same time, since the locking screw 14 is threaded to the bottom of the rotating sleeve 13, when the locking screw 14 is tightened, the locking screw 14 presses against the fixing rod 11 and locks the fixing rod 11 to the top wall inside the rotating sleeve 13. The frictional locking force generated by the top wall of the rotating sleeve 13 on the fixing rod 11 locks the fixing rod 11, thus fixing the tilt angle of the outer shell 1 and the screening component 3. Since the angle of the outer shell 1 relative to the connecting pipe 9 is tilted downward, the material will be able to discharge smoothly after entering the outer shell 1 through the connecting pipe 9 due to the tilt angle. During the screening process, since gear 701 is fixedly connected to the output end of motor 6, motor 6 drives gear 701 to rotate. Gear 701 meshes with gear ring 702 fixedly connected to the outer wall of rotating cylinder 4, thereby sequentially driving gear ring 702 and rotating cylinder 4 to rotate. At this time, the protective cover 10 installed outside gear 701 and gear ring 702 protects gear 701 and gear ring 702. Since a rotating ring (2) is provided on one end of fine filter screen (301), and one end of rotating cylinder (4) and coarse filter screen (5) is fixedly connected to rotating ring (2), stability is ensured while ensuring that fine filter screen 301 and coarse filter screen 5 rotate synchronously when rotating cylinder 4 rotates. Since coarse filter screen 5 is sleeved on fine filter screen 301, the rotation of the fine filter screen 301 and coarse filter screen 5 is ensured. Inside the filter screen 301 and the coarse filter screen 5, the mesh size is relatively large. During the first screening of the material, coarse particles larger than the mesh size of the coarse filter screen 5 slide down the inner wall of the coarse filter screen 5 at an inclined angle to the designated position. Materials smaller than the mesh size of the coarse filter screen 5 pass through the mesh and are screened again by the fine filter screen 301. At this time, the medium-sized particles screened out are discharged from the inside of the fine filter screen 301 to the outside through the guide bucket 302 to the designated position. The fine materials that pass through the fine filter screen 301 are finally discharged from the inside of the rotating drum 4. Since the lengths of the rotating drum 4, the fine filter screen 301 and the coarse filter screen 5 are set from shortest to longest, the materials can be discharged to different positions to achieve the effect of distinguishing the size of the materials and realize multiple screening of the output of the sand mill.

Claims

1. A filter device for the discharge port of a sand mill, comprising: The connecting pipe (9), the outer shell (1) and the hose (8) are flexibly connected between the connecting pipe (9) and the outer shell (1). The feature is that it also includes a screening component (3), which is rotatably disposed inside the outer shell (1). The screening component (3) includes a rotating cylinder (4) rotatably disposed inside the outer shell (1) and a fine filter screen (301) and a coarse filter screen (5) nested inside the rotating cylinder (4). The motor (6) is fixedly installed on the outer wall of the housing (1); The transmission assembly (7) includes a gear (701) fixedly connected to the output end of the motor (6) and a gear ring (702) fixedly connected to the outer wall of the rotating cylinder (4) and meshing with the gear (701). The fixing seat (12) is fixedly connected to the bottom of the connecting pipe (9); The rotating sleeve (13) is rotatably connected to the fixed seat (12); The protective cover (10) is fixedly sleeved on the outer shell (1) and surrounds the gear (701) and the gear ring (702). A fixing rod (11) is inserted into a rotating sleeve (13) at one end, and the other end of the fixing rod (11) is fixedly connected to a protective cover (10).

2. The sand mill outlet filter device according to claim 1, characterized in that, A rotating ring (2) is provided on one end of the fine filter (301), and one end of the rotating cylinder (4) and the coarse filter (5) are fixedly connected to the rotating ring (2).

3. The sand mill outlet filter device according to claim 2, characterized in that, A guide bucket (302) is fixedly connected to the other end of the fine filter (301).

4. The sand mill outlet filter device according to claim 1, characterized in that, The rotating sleeve (13) is rotatably connected inside the fixed base (12) by a pin.

5. A sand mill outlet filter device according to claim 1, characterized in that, The bottom of the rotating sleeve (13) is threaded with a locking screw (14) for locking the fixing rod (11) inside the rotating sleeve (13).

6. The sand mill outlet filter device according to claim 1, characterized in that, An opening (15) is provided on the cylindrical wall in the middle of the outer casing (1) for the gear (701) to pass through.

7. A sand mill outlet filter device according to claim 1, characterized in that, The mesh size of the coarse filter (5) is larger than that of the fine filter (301).

8. A sand mill outlet filter device according to claim 1, characterized in that, The lengths of the rotating cylinder (4), the fine filter (301), and the coarse filter (5) are arranged from shortest to longest.

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