Multi-screening device for plastic master batches

Abstract

The utility model relates to the technical field of multiple screening devices, in particular to a multiple screening device for plastic master batches. The screening device comprises a base, a damping rod and a first spring are fixedly connected to the upper end of the base, a screening box is fixedly connected to the upper end of the damping rod, the other end of the first spring is fixed to the screening box, a motor is installed on the front face of the screening box, and a rotating shaft is rotationally connected to the inner wall of the screening box; the rotating shaft is fixed to the output end of the motor, an eccentric block is fixedly connected to the arc surface of the rotating shaft, a first screen is fixedly connected to the inner wall of the screening box, and a second screen is slidably inserted into the screening box. The problem that the plastic master batch screening efficiency is affected due to the fact that the position of a screen at the bottom in the screening box is deep and the screen is difficult to disassemble and replace by a worker through tools during replacement in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of multiple screening devices, in particular to a multiple screening device for plastic master batches. Background Art

[0002] Plastic masterbatch is composed of excess chemical additives, carrier resins and dispersants. In the process of plastic processing and molding, for the convenience of operation, the required various additives, fillers and a small amount of carrier resin are first mixed and kneaded, and the granular material is obtained through the process of metering, mixing, melting, extrusion, pelletizing and other processing by extruders and other equipment. The multiple screening device is mainly composed of a base, a spring, a motor, an eccentric block, a screening box, and multiple screens. When screening the plastic masterbatch, install the screen into the screening box, start the motor, so that the motor drives the eccentric block, thereby driving the screening box to vibrate, and pour the plastic masterbatch into the screening box. The plastic masterbatch passes through the first screen, the first screen vibrates, and the plastic masterbatch is screened. The smaller masterbatch falls into the second screen for further screening, and the smaller masterbatch falls into the bottom of the screening box.

[0003] The inventor found in his daily work that when the multiple screening device is in use, when multiple screening is performed on plastic masterbatches, sieves with different mesh sizes are combined for screening. Since the bottom sieve in the screening box is located deep, it is difficult for workers to use tools to disassemble and replace the sieve when replacing it, which affects the efficiency of screening the plastic masterbatch. Summary of the invention

[0004] The utility model aims to solve the problem that in actual use, when multiple screenings are performed on plastic masterbatches, sieves with different mesh sizes are used for combined screening. Since the bottom sieve in the screening box is located deep, it is difficult for workers to use tools to disassemble and replace the sieve when replacing it, thereby affecting the efficiency of screening the plastic masterbatches. A multiple screening device for plastic masterbatches is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multiple screening device for plastic masterbatch, comprising a base, the upper end of the base is fixedly connected with a damping rod and a spring, the upper end of the damping rod is fixedly connected with a screening box, the other end of the spring is fixed to the screening box, a motor is installed on the front of the screening box, the inner wall of the screening box is rotatably connected with a rotating shaft, the output end of the rotating shaft and the motor is fixed, the arc surface of the rotating shaft is fixedly connected with an eccentric block, the inner wall of the screening box is fixedly connected with a first screen, and the sliding plug of the screening box A second screen is provided, and a first discharge port, a second discharge port and a third discharge port are fixedly connected to one side of the screening box, a replacement component is arranged between the screening box and the second screen, a buffer component is arranged on the surface of the first screen and the second screen, and the replacement component includes a connecting plate fixedly connected to one side of the second screen, connecting columns are fixedly connected to the two ends of the back of the connecting plate, a circular groove is provided on the arc surface of the connecting column, a card slot is provided at the two ends of the right side of the screening box, a slide slot is provided on the inner wall of the card slot, and a positioning rod is slidably connected to the inner wall of the slide slot.

[0006] The effect achieved by the above-mentioned components is: by setting up a replacement component, when conveniently replacing the second screen, the positioning rod is separated from the circular groove on the connecting column on the connecting plate, so that the positioning rod is completely retracted into the slide groove, and the connecting plate is dragged to pull out the second screen, and the replaced screen is dragged to be inserted into the screening box, and the positioning rod is inserted into the circular groove on the connecting column for limiting, thereby completing the replacement of the second screen.

[0007] Preferably, the upper end of the positioning rod is fixedly connected to a second spring, and the other end of the second spring is fixed to the screening box.

[0008] The effect achieved by the above components is: the positioning rod is reset by setting the second spring.

[0009] Preferably, L-shaped holes are provided at both ends of the right side of the screening box, the L-shaped holes are connected to the slide slot, and a piston is fixedly connected to the upper end of the positioning rod.

[0010] The effect achieved by the above components is: by setting the positioning rod, the connecting column is limited.

[0011] Preferably, a pulling piston is provided on the inner wall of the L-shaped hole, and one end of the pulling piston is fixedly connected to a pulling rod with a hole.

[0012] The effect achieved by the above components is: pulling the pull rod with a hole causes the pull piston to move, and due to the closed space between the L-shaped hole and the slide groove, the positioning rod moves.

[0013] Preferably, two ends of the right side of the screening box are fixedly connected with rectangular frames, and a positioning pin is slidably inserted into the upper end of the rectangular frame.

[0014] The effect achieved by the above components is: the positioning pin on the rectangular frame is dragged upward to separate it from the hole on the pull rod with holes.

[0015] Preferably, the buffer assembly includes a buffer plate fixedly connected to the upper end of the first screen, the lower end of the buffer plate is fixedly connected to a positioning round rod, the positioning round rod passes through the first screen, and the lower end of the first screen is fixedly connected to a clamping ring.

[0016] The effect achieved by the above components is: when avoiding poor screening effect due to pouring plastic masterbatch flow rate block, the buffer plate is dragged to make the positioning round rod clamped in the clamping ring, and the positioning round rod is limited by the limiting mechanism, thereby limiting the buffer plate, and the plastic masterbatch is blocked from impacting the buffer plate, and then slowed down, thereby avoiding poor screening effect due to pouring plastic masterbatch flow rate block.

[0017] Preferably, a movable groove is formed on the arc surface of the positioning round rod, a fixing rod is slidably connected to the inner wall of the movable groove, and the fixing rod is inserted into the clamping ring.

[0018] The effect achieved by the above components is that the fixed rod in the movable groove is clamped into the clamping ring, thereby limiting the positioning round rod.

[0019] Preferably, one end of the fixing rod is fixedly connected to a spring three, and the other end of the spring three is fixed to a clamping ring.

[0020] The effect achieved by the above components is: the fixing rod is reset by setting the spring three.

[0021] To sum up, the beneficial effects of the utility model are as follows: in the utility model, by setting a replacement component, when the second screen is replaced conveniently, the positioning rod is separated from the circular groove on the connecting column on the connecting plate, so that the positioning rod is completely retracted into the slide groove, and the connecting plate is dragged to pull out the second screen, and the replaced screen is dragged to be inserted into the screening box, and the positioning rod is inserted into the circular groove on the connecting column for limiting, thereby completing the replacement of the second screen, solving the problem of combined screening by sieves of different mesh sizes during multiple screening of plastic masterbatches, and because the bottom sieve in the screening box is located deep, it is difficult for workers to use tools to disassemble and replace the sieve during replacement, thereby affecting the efficiency of screening of plastic masterbatches. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the other side of the utility model;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the cross section of the utility model;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the replacement component of the utility model;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the buffer component of the utility model;

[0027] In the figure: 1. base; 2. replacement component; 3. buffer component; 4. screening box; 5. spring one; 6. damping rod; 7. motor; 8. rotating shaft; 9. eccentric block; 10. first screen; 11. second screen; 12. first discharge port; 13. second discharge port; 14. third discharge port; 201. connecting plate; 202. connecting column; 203. circular groove; 204. clamping groove; 205. slide groove; 206. positioning rod; 207. spring two; 208. L-shaped hole; 209. pulling piston; 210. pull rod with hole; 211. rectangular frame; 212. positioning pin; 31. buffer plate; 32. retaining ring; 33. movable groove; 34. fixing rod; 35. positioning round rod; 36. spring three. DETAILED DESCRIPTION

[0028] Reference Figure 1 , Figure 2 and Figure 3 as well as Figure 4 As shown, the utility model provides a technical solution: a plastic masterbatch multiple screening device comprises a base 1, the upper end of the base 1 is fixedly connected with a damping rod 6 and a spring 5, the upper end of the damping rod 6 is fixedly connected with a screening box 4, the other end of the spring 5 is fixed to the screening box 4, a motor 7 is installed on the front of the screening box 4, the inner wall of the screening box 4 is rotatably connected with a rotating shaft 8, the output end of the rotating shaft 8 and the motor 7 are fixed, an eccentric block 9 is fixedly connected to the arc surface of the rotating shaft 8, a first screen 10 is fixedly connected to the inner wall of the screening box 4, a second screen 11 is slidably inserted in the screening box 4, a first discharge port 12, a second discharge port 13 and a third discharge port 14 are fixedly connected to one side of the screening box 4, a replacement component 2 is arranged between the screening box 4 and the second screen 11, and a buffer component 3 is arranged on the surface of the first screen 10 and the second screen 11.

[0029] The specific configuration and function of the sealing device 2 and the protective device 3 will be described in detail below.

[0030] As shown in reference 4, in this embodiment: the replacement component 2 includes a connecting plate 201 fixedly connected to one side of the second screen 11, and connecting columns 202 are fixedly connected at both ends of the back of the connecting plate 201. The arc surface of the connecting column 202 is provided with a circular groove 203, and the right ends of the screening box 4 are provided with a card slot 204. The inner wall of the card slot 204 is provided with a slide groove 205, and the inner wall of the slide groove 205 is slidably connected with a positioning rod 206. By setting the replacement component 2, when the second screen 11 is conveniently replaced, the positioning rod 206 is separated from the circular groove 203 on the connecting column 202 on the connecting plate 201, so that the positioning rod 206 is completely retracted into the slide groove 205, and the connecting plate 201 is dragged to pull out the second screen 11, and the replaced screen is dragged to be inserted into the screening box 4, and the positioning rod 206 is inserted into the circular groove 203 on the connecting column 202 for limiting, thereby completing the replacement of the second screen 11, and the positioning rod 206 The upper end of the second spring 207 is fixedly connected, and the other end of the second spring 207 is fixed to the screening box 4. By setting the second spring 207, the positioning rod 206 is reset. L-shaped holes 208 are opened at both ends of the right side of the screening box 4. The L-shaped hole 208 is connected to the slide groove 205. The upper end of the positioning rod 206 is fixedly connected with a piston. By setting the positioning rod 206, the connecting column 202 is limited. The inner wall of the L-shaped hole 208 is provided with a pulling piston 209. One end of the piston 209 is fixedly connected to a tie rod 210 with a hole. Pulling the tie rod 210 with a hole causes the pulling piston 209 to move. Due to the enclosed space between the L-shaped hole 208 and the slide groove 205, the positioning rod 206 moves. The right ends of the screening box 4 are fixedly connected to a rectangular frame 211. A positioning pin 212 is slidably inserted into the upper end of the rectangular frame 211. The positioning pin 212 on the rectangular frame 211 is dragged upward to separate it from the hole on the tie rod 210 with a hole.

[0031] Reference Figure 5 As shown, in this embodiment: the buffer component 3 includes a buffer sheet 31 fixedly connected to the upper end of the first screen 10, and the lower end of the buffer sheet 31 is fixedly connected to a positioning rod 35, and the positioning rod 35 passes through the first screen 10. The lower end of the first screen 10 is fixedly connected to a clamping ring 32. When the plastic masterbatch flow rate block is prevented from being poured in and the screening effect is poor, the buffer sheet 31 is dragged so that the positioning rod 35 is clamped into the clamping ring 32, and the positioning rod 35 is limited by the limiting mechanism, thereby limiting the buffer sheet 31, and the plastic masterbatch impacts the buffer The sheet 31 is blocked and then slowed down, thereby avoiding the poor screening effect caused by pouring the plastic masterbatch flow block. The arc surface of the positioning round rod 35 is provided with a moving groove 33, and the inner wall of the moving groove 33 is slidably connected with a fixing rod 34, which is inserted into the clamping ring 32. The fixing rod 34 in the moving groove 33 is clamped into the clamping ring 32, thereby limiting the positioning round rod 35. The arc surface of the positioning round rod 35 is provided with a moving groove 33, and the inner wall of the moving groove 33 is slidably connected with the fixing rod 34. The fixing rod 34 is reset by setting a spring three 36.

[0032] Working principle: When screening the plastic masterbatch, install the screen into the screening box 4, start the motor 7, so that the motor 7 drives the rotating shaft 8 to rotate, thereby the eccentric block 9 rotates, and under the action of the damping rod 6 and the spring 5, the screening box 4 on the base 1 is driven to vibrate, and the plastic masterbatch is poured into the screening box 4. The plastic masterbatch passes through the first screen 10, and the first screen 10 vibrates to screen the plastic masterbatch. The smaller masterbatch falls into the second screen 11 for further screening, and the smaller masterbatch The masterbatch 206 is moved due to the closed space between the L-shaped hole 208 and the slide groove 205, and the positioning rod 206 is moved to separate the positioning rod 206 from the connecting hole 208. The circular groove 203 on the connecting column 202 on the plate 201 is separated, so that the positioning rod 206 is completely retracted into the slide groove 205, and the connecting plate 201 is dragged to separate the connecting column 202 and the card slot 204, so that the second screen 11 is pulled out, and the replaced screen is dragged to be inserted into the screening box 4, and the positioning rod 206 is inserted into the circular groove 203 on the connecting column 202 for limiting, thereby completing the replacement of the second screen 11, and the positioning rod 206 is set by setting the spring 207 to Rod 206 is reset. When the flow rate block of plastic masterbatch is avoided and the screening effect is poor, the buffer sheet 31 is dragged so that the positioning round rod 35 is stuck in the clamping ring 32, and the fixing rod 34 in the movable groove 33 is stuck in the clamping ring 32, thereby limiting the buffer sheet 31. The impact of the plastic masterbatch on the buffer sheet 31 is blocked, and then the buffer sheet 31 is slowed down, thereby avoiding the poor screening effect caused by pouring the flow rate block of plastic masterbatch, thereby limiting the positioning round rod 35, and resetting the fixing rod 34 by setting spring three 36.

[0033] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A plastic masterbatch multiple screening device, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a damping rod (6) and a spring (5), the upper end of the damping rod (6) is fixedly connected to a screening box (4), the other end of the spring (5) is fixed to the screening box (4), a motor (7) is installed on the front of the screening box (4), the inner wall of the screening box (4) is rotatably connected to a rotating shaft (8), the output end of the rotating shaft (8) and the motor (7) are fixed, the arc surface of the rotating shaft (8) is fixedly connected to an eccentric block (9), the inner wall of the screening box (4) is fixedly connected to a first screen (10), the screening box (4) is slidably inserted with a second screen (11), and one side of the screening box (4) is fixedly connected to a first discharge port (12) and a second discharge port (13). 3) and a third discharge port (14), a replacement component (2) is arranged between the screening box (4) and the second screen (11), a buffer component (3) is arranged on the surface of the first screen (10) and the second screen (11), the replacement component (2) comprises a connecting plate (201) fixedly connected to one side of the second screen (11), connecting columns (202) are fixedly connected at both ends of the back of the connecting plate (201), a circular groove (203) is provided on the arc surface of the connecting column (202), a clamping groove (204) is provided at both ends of the right side of the screening box (4), a slide groove (205) is provided on the inner wall of the slide groove (205), and a positioning rod (206) is slidably connected to the inner wall of the slide groove (205).

2. A plastic masterbatch multiple screening device according to claim 1, characterized in that: The upper end of the positioning rod (206) is fixedly connected to a second spring (207), and the other end of the second spring (207) is fixed to the screening box (4).

3. A plastic masterbatch multiple screening device according to claim 2, characterized in that: L-shaped holes (208) are provided at both ends of the right side of the screening box (4), the L-shaped holes (208) are in communication with the slide groove (205), and a piston is fixedly connected to the upper end of the positioning rod (206).

4. A plastic masterbatch multiple screening device according to claim 3, characterized in that: A pulling piston (209) is provided on the inner wall of the L-shaped hole (208), and one end of the pulling piston (209) is fixedly connected to a pulling rod (210) with a hole.

5. A plastic masterbatch multiple screening device according to claim 4, characterized in that: The two ends of the right side of the screening box (4) are fixedly connected with rectangular frames (211), and the upper end of the rectangular frame (211) is slidably inserted with a positioning pin (212).

6. A plastic masterbatch multiple screening device according to claim 5, characterized in that: The buffer assembly (3) comprises a buffer plate (31) fixedly connected to the upper end of the first screen (10); a positioning round rod (35) is fixedly connected to the lower end of the buffer plate (31); the positioning round rod (35) passes through the first screen (10); and a clamping ring (32) is fixedly connected to the lower end of the first screen (10).

7. A plastic masterbatch multiple screening device according to claim 6, characterized in that: A movable groove (33) is formed on the arc surface of the positioning circular rod (35), and a fixing rod (34) is slidably connected to the inner wall of the movable groove (33), and the fixing rod (34) is inserted into the clamping ring (32).

8. A plastic masterbatch multiple screening device according to claim 7, characterized in that: One end of the fixing rod (34) is fixedly connected to a spring three (36), and the other end of the spring three (36) is fixed to a clamping ring (32).

Images