Filtering equipment for PVC auxiliary agent production

Abstract

The utility model discloses filtering equipment for PVC (polyvinyl chloride) additive production, which comprises a shell, wherein a coarse filter screen and a fine filter screen are sequentially arranged in the shell from bottom to top; a liquid inlet pipe is arranged at the lower end of the shell, a liquid outlet pipe is arranged at the upper end of the shell, and liquid to be filtered is filtered from bottom to top; the upper side of the fine filter screen is connected with a rapping device; and the rapping device drives the coarse filter screen and the fine filter screen to vibrate up and down. According to the utility model, the vibrating effect is more reliable, the vibrating screen is not easy to damage, the coarse filter screen and the fine filter screen can be conveniently and thoroughly cleaned, and the blockage is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of filtering equipment for PVC auxiliary agent production, belong to the filtering technical field for PVC auxiliary agent production. BACKGROUND

[0002] Pure resin of PVC is easy to decompose when processing, poor fluidity, low impact strength, poor weather resistance, so it needs to add processing aids in the processing process to improve its performance, such as acrylic ester processing aid PVC foaming regulator, which helps to promote PVC melting, improve surface finish, improve the elasticity of melt, enhance the elongation and strength of melt, which is a copolymer formed by special emulsion polymerization process of methyl methacrylate and acrylic ester raw materials. Some impurities will be produced in the production process of PVC auxiliary agent, and the impurities need to be removed by filtration to ensure the purity of PVC auxiliary agent.

[0003] The Chinese utility model patent with publication number CN208340285U discloses a kind of filtering device for PVC processing aid, the filter box is sequentially provided with coarse filter screen and fine filter screen, and the lower portion of the fine filter screen is provided with a shaking device.

[0004] However, the above-mentioned patent has the following defects in use:

[0005] First, the pneumatic shaking device is immersed in the liquid inside the filter box, which is relatively humid and can easily be stuck due to rust, and the shaking effect is unreliable.

[0006] Second, impurities accumulate on the upper surface of the coarse filter screen and the fine filter screen, which is not easy to clean and can easily cause blockage.

[0007] As can be seen from the above, the prior art has obvious inconvenience and defects in actual use, so it is necessary to improve. UTILITY MODEL CONTENTS

[0008] The utility model provides a kind of filtering equipment for PVC auxiliary agent production in view of the deficiencies in the background art, and the shaking effect is more reliable, and it is not easy to damage, and the coarse filter screen and the fine filter screen can be cleaned thoroughly and conveniently, to prevent blockage.

[0009] To solve the above technical problems, the utility model adopts the following technical solutions:

[0010] A kind of filtering equipment for PVC auxiliary agent production, including shell, coarse filter screen and fine filter screen are sequentially arranged in the inside of shell from bottom to top;

[0011] The lower end of shell is provided with liquid inlet pipe, and the upper end of shell is provided with liquid outlet pipe, and the liquid to be filtered is filtered from bottom to top;

[0012] The upper side of the fine filter screen is connected with a shaking device, and the shaking device drives the coarse filter screen and the fine filter screen to vibrate up and down.

[0013] Further, the bottom of the shell is designed in a downward tapered cone shape, and the bottom of the shell is provided with a slag discharge pipe, and the slag discharge pipe is provided with a valve switch.

[0014] Further, the two ends of the coarse filter screen and the fine filter screen are slidably installed with mounting shafts, the lower ends of the mounting shafts are installed on fixed seats, the fixed seats are fixed on the inner wall of the shell, and springs are sleeved on the mounting shafts.

[0015] Further, the shaking device comprises connecting shafts arranged at four corners of the fine filter screen, and connecting plates are fixed between the two connecting shafts at the two ends through screws; the two connecting plates are matched with cams respectively, and the two cams are fixed on a transmission shaft.

[0016] Further, the upper side of the coarse filter screen is also connected with a shaking device.

[0017] Further, the shaking device comprises connecting shafts arranged at four corners of the coarse filter screen, and connecting plates are fixed between the two connecting shafts at the two ends through screws; the two connecting plates are matched with cams respectively, and the two cams are fixed on a transmission shaft.

[0018] Further, the end portions of the transmission shafts matched with the coarse filter screen and the fine filter screen are each installed with a belt pulley, the two belt pulleys are driven through a belt, and one of the transmission shafts is driven through a driving motor.

[0019] Further, the coarse filter screen is provided with a through hole at a middle position, a cover plate is hinged at the through hole on the lower surface of the coarse filter screen, and a return spring is arranged on the hinge shaft of the cover plate.

[0020] The above technical scheme is adopted in the utility model, and compared with the prior art, the utility model has the following advantages:

[0021] The inside of the shell is sequentially provided with the coarse filter screen and the fine filter screen from bottom to top, and the impurities with relatively heavy weight directly fall to the bottom of the shell due to gravity, so that the clogging of the filter screen is reduced.

[0022] The shaking device comprises connecting shafts at four corners of the fine filter screen and the coarse filter screen, connecting plates are arranged between the two connecting shafts at the two ends, the transmission shaft drives the cam to rotate, the cam drives the two connecting plates to move up and down, so as to drive the fine filter screen to vibrate up and down, the shaking effect is more reliable, and the fine filter screen and the coarse filter screen are not easy to be damaged, so that the fine filter screen and the coarse filter screen can be conveniently and completely cleaned, and the clogging is prevented.

[0023] The utility model will be described in detail below in combination with the drawings and embodiments. DRAWINGS

[0024] Figure 1 is the internal structure schematic view of the utility model;

[0025] Figure 2 is Figure 1 the enlarged view of A in the middle;

[0026] Figure 3 is the connection schematic view of the fine filter screen and the connecting plate in the utility model;

[0027] Figure 4 is the structure schematic view of the connecting shaft in the utility model.

[0028] In the figure, 1 - shell, 2 - liquid inlet pipe, 3 - liquid outlet pipe, 4 - slag discharge pipe, 5 - valve switch, 6 - fine filter screen, 7 - coarse filter screen, 8 - through hole, 9 - cover plate, 10 - mounting shaft, 11 - fixed seat, 12 - spring, 13 - transmission shaft, 14 - cam, 15 - connecting shaft, 16 - connecting plate, 17 - screw, 18 - pulley, 19 - drive motor. DETAILED DESCRIPTION

[0029] In order to have more clear understanding of the technical features, objects and effects of the utility model, the specific implementation mode of the utility model will be explained by referring to the drawings.

[0030] As Figure 1 shown, the utility model provides a kind of filtering equipment for PVC auxiliary agent production, including shell 1, the inside of shell 1 is equipped with coarse filter screen 7 and fine filter screen 6 from bottom to top in turn;

[0031] The lower end of shell 1 is equipped with liquid inlet pipe 2, the upper end of shell 1 is equipped with liquid outlet pipe 3, and the liquid to be filtered is filtered from bottom to top;

[0032] The upper side of fine filter screen 6 is connected with shaking device, and the shaking device drives coarse filter screen 7 and fine filter screen 6 to vibrate up and down.

[0033] The bottom of shell 1 is designed as tapering downward, and the bottom of shell 1 is equipped with slag discharge pipe 4, and valve switch 5 is arranged on slag discharge pipe 4.

[0034] The both ends of coarse filter screen 7 and fine filter screen 6 are slidably installed with mounting shaft 10, the lower end of mounting shaft 10 is installed on fixed seat 11, fixed seat 11 is fixed on the inner wall of shell 1, and spring 12 is sleeved on mounting shaft 10.

[0035] As Figure 2 , Figure 3 , Figure 4The shaking device comprises connecting shafts 15 arranged at four corners of the fine filter screen 6, connecting plates 16 fixed between the two connecting shafts 15 at two ends by screws 17, two camshafts 14 fixed on a transmission shaft 13, and the two connecting plates 16 are matched with the two camshafts 14 respectively.

[0036] Further, the upper side of the coarse filter screen 7 is also connected with the shaking device. The shaking device comprises connecting shafts 15 arranged at four corners of the coarse filter screen 7, connecting plates 16 fixed between the two connecting shafts 15 at two ends by screws 17, two camshafts 14 fixed on a transmission shaft 13, and the two connecting plates 16 are matched with the two camshafts 14 respectively.

[0037] The end portions of the transmission shafts 13 matched with the coarse filter screen 7 and the fine filter screen 6 are provided with a belt pulley 18, and the two belt pulleys 18 are driven by a belt.

[0038] The middle position of the coarse filter screen 7 is provided with a through hole 8, and the lower surface of the coarse filter screen 7 is hinged with a cover plate 9 at the through hole 8.

[0039] The specific working principle of the utility model is as follows:

[0040] The liquid to be filtered enters the shell 1 from the liquid inlet pipe 2 at the lower end, and is filtered by the coarse filter screen 7 and the fine filter screen 6 in sequence from bottom to top.

[0041] When the lower surface of the coarse filter screen 7 and the fine filter screen 6 is attached with more impurities, tap water is injected from the top of the shell 1, the driving motor 19 is started, the shaking device is worked, the coarse filter screen 7 and the fine filter screen 6 are vibrated up and down, the impurities on the lower surface of the coarse filter screen 7 and the fine filter screen 6 are washed down, the cover plate 9 is pushed downward to open under the water force, the water with impurities is discharged, the valve switch 5 is opened, the water and the impurities are discharged, and thus the coarse filter screen 7 and the fine filter screen 6 can be cleaned conveniently and completely, and the blockage is prevented.

[0042] The above is the example of the best implementation mode of the utility model, wherein the parts not described in detail are the common knowledge of the ordinary skilled in the art. The protection scope of the utility model is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A filtering device for PVC additive production, characterized by: The shell (1) is internally provided with a coarse filter screen (7) and a fine filter screen (6) from bottom to top in sequence; The lower end of the shell (1) is provided with an inlet pipe (2), and the upper end of the shell (1) is provided with an outlet pipe (3), and the liquid to be filtered is filtered from bottom to top; The upper side of the fine filter screen (6) is connected with a shaking device, and the shaking device drives the coarse filter screen (7) and the fine filter screen (6) to vibrate up and down. The two ends of the coarse filter screen (7) and the fine filter screen (6) are slidably provided with mounting shafts (10), the lower ends of the mounting shafts (10) are mounted on fixed seats (11), the fixed seats (11) are fixed on the inner wall of the shell (1), and the mounting shafts (10) are sleeved with springs (12). The shaking device comprises connecting shafts (15) arranged at four corners of the fine filter screen (6), and two connecting plates (16) are fixed between the two connecting shafts (15) at two ends through screws (17); the two connecting plates (16) are matched with cams (14) respectively, and the two cams (14) are fixed on a transmission shaft (13).

2. The filtering equipment for PVC additive production of claim 1, characterized in that: The bottom of the shell (1) is designed in a tapered shape which is gradually reduced downward, the bottom of the shell (1) is provided with a slag discharge pipe (4), and the slag discharge pipe (4) is provided with a valve switch (5).

3. The filtering device for PVC additive production of claim 1, characterized in that: The upper side of the coarse filter screen (7) is also connected with a shaking device.

4. The filtering device for PVC additive production of claim 3, characterized in that: The shaking device comprises connecting shafts (15) arranged at four corners of the coarse filter screen (7), and two connecting plates (16) are fixed between the two connecting shafts (15) at two ends through screws (17); the two connecting plates (16) are matched with cams (14) respectively, and the two cams (14) are fixed on a transmission shaft (13).

5. The filtering device for PVC additive production of claim 4, characterized in that: The end portions of the transmission shaft (13) are provided with a belt pulley (18) in cooperation with the coarse filter screen (7) and the fine filter screen (6), and the two belt pulleys (18) are driven through a belt, and one of the transmission shafts (13) is driven by a driving motor (19).

6. The filtering device for PVC additive production according to claim 5, characterized in that: The coarse filter screen (7) is provided with a through hole (8) at the middle position, the lower surface of the coarse filter screen (7) is hingedly provided with a cover plate (9) at the through hole (8), and a return spring is arranged on the hinge shaft of the cover plate (9).

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