Separation and purification equipment for polyacrylate production

Abstract

The utility model relates to separation and purification equipment for polyacrylate production. The device comprises a separation tank and a separation cover, a separation cavity is formed in the separation tank, centrifugal fan blades and a feeding port are arranged in the center of the bottom of the separation cavity, a motor is arranged at the bottom of the separation tank, and a feeding pipe communicated with the feeding port is further arranged; a filter cover is arranged at the bottom of the separation cover and comprises an annular outer wall, an annular material receiving part arranged at the bottom of the annular outer wall and a filter screen attached to the inner side of the annular outer wall, and the annular outer wall is of a porous structure; the separation cover can hermetically cover the upper side of the separation cavity, and enables the annular material receiving part to be hermetically contacted with the bottom of the separation cavity; an annular filtrate cavity is formed between the inner side wall and the annular outer wall of the separation cavity, and a liquid discharge pipe communicated with the annular filtrate cavity is arranged in the separation tank. Filtering is carried out while feeding is carried out, so that a large volume for storing a large amount of liquid is not needed, the whole device is more compact, and the device has the advantages of being convenient to take out polyacrylate crystals and clean and the like.

Description

Technical Field

[0001] The utility model relates to separation and purification equipment, in particular to separation and purification equipment for the production of polyacrylate. Background Art

[0002] Polyacrylate is a synthetic polymer made from acrylic acid ester monomers. It has excellent physical and chemical properties, such as high transparency, good chemical resistance and weather resistance, as well as high strength, low water absorption and high melting point. These properties make polyacrylate widely used in various fields.

[0003] In terms of production process, the production of polyacrylate mainly includes the following steps: raw material preparation, selecting and preparing acrylate monomers and other raw materials to ensure the quality and stability of the raw materials; polymerization reaction, mixing acrylate monomers with other raw materials and carrying out polymerization reaction in a reactor; crystallization and separation, cooling and crystallizing the reaction mixture to obtain solid polyacrylate, and then separating the solid from the liquid by centrifugation, filtration, etc.; wet grinding, wet grinding the separated polyacrylate to make its particles finer for subsequent processing; drying, the wet-grinded polyacrylate needs to be dried to reduce the moisture content and improve its quality and stability.

[0004] Existing centrifugal filtration equipment is often huge in size. Each time you filter, you need to add a certain amount of mixed liquid at one time for filtration. After the filtration is completed, the solid particles must be removed before the next loading can be carried out. Due to the large size, the process of loading, replacing the filter screen, removing the solid particles, and cleaning are relatively inconvenient. Summary of the invention

[0005] The utility model provides separation and purification equipment for polyacrylate production, which solves the problems existing in the prior art.

[0006] The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: A separation and purification equipment for polyacrylate production, characterized in that: it includes a separation tank and a separation cover, a separation chamber is formed in the separation tank, the upper side of the separation chamber is uncovered, a centrifugal fan blade and a feed port are arranged at the bottom center of the separation chamber, a motor is arranged at the bottom of the separation tank which is transmission-connected to the centrifugal fan blade, and a feed pipe connected to the feed port is also arranged; a filter cover is arranged at the bottom of the separation cover, the filter cover includes an annular outer wall, an annular material receiving portion arranged at the bottom of the annular outer wall and a filter screen attached to the inner side of the annular outer wall, and the annular outer wall is a porous structure; the separation cover can be sealed and arranged on the upper side of the separation chamber, and the annular material receiving portion is sealed and contacted with the bottom of the separation chamber; an annular filtrate chamber is formed between the inner side wall of the separation chamber and the annular outer wall, and a drain pipe connected to the annular filtrate chamber is arranged in the separation tank.

[0007] The feed pipe of the utility model is used to connect the cooled polyacrylate mixed liquid from the reactor, in which the crystallized polyacrylate is suspended, and the mixed liquid flows into the space surrounded by the filter cover through the feed port, and at the same time, the motor drives the centrifugal fan blades to rotate at high speed, stirring the mixed liquid to make centrifugal motion, and under the centrifugal action, the mixed liquid flows to one side of the annular outer wall, and under the action of the filter screen, the crystals are blocked inside the filter screen, and the liquid flows to the annular filtrate cavity outside it and is discharged from the drain pipe. When the mixed liquid in the reactor is completely drained, the utility model stops working, and the separation cover can be taken out from the separation tank, and the polyacrylate crystals are concentrated on the filter screen and the annular receiving part. The utility model filters while feeding, so there is no need for a large volume for storing a large amount of liquid, and the whole is more compact, and it also has the advantages of easy removal of polyacrylate crystals and cleaning.

[0008] Furthermore, the filter cover also includes an inner cover body, the inner cover body is connected to the annular material receiving portion, a plurality of through holes are provided on the inner cover body, a gravity cover plate corresponding to the through holes is rotatably connected to one side of the inner cover body close to the annular outer wall, and the gravity cover plate will naturally droop under the action of gravity to cover the through holes. When the utility model is in a filtering state, since the gravity cover plate has a one-way passing effect, the mixed liquid can pass through the inner cover body through the through holes, and when the utility model stops filtering, the gravity cover plate will automatically close the through holes to prevent the crystals inside the filter cover from overflowing, thereby preventing the crystals from falling into the separation chamber.

[0009] Therefore, compared with the prior art, the utility model has the following characteristics: 1. The utility model performs filtering while feeding, so there is no need for a large volume for storing a large amount of liquid, the whole is more compact, and it is also easy to remove the polyacrylate crystals and clean them. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0011] Attached Figure 2 It is a schematic diagram of the structure of the separation cover and the filter cover;

[0012] Attached Figure 3 Yes Figure 2 A cross-sectional view of

[0013] Attached Figure 4 It is a schematic diagram of the local structure of the filter. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0015] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] Example 1: See Figure 1 and Figure 2 A separation and purification device for the production of polyacrylate comprises a separation tank 100 and a separation cover 200, wherein a separation chamber is formed in the separation tank, wherein the upper side of the separation chamber is uncovered, wherein a centrifugal blade 120 and a feed port 130 are arranged at the bottom center of the separation chamber, wherein a motor 140 connected to the centrifugal blade in a transmission manner is arranged at the bottom of the separation tank, and a feed pipe 150 connected to the feed port is also arranged; wherein a filter cover 300 is arranged at the bottom of the separation cover, wherein the filter cover comprises an annular outer wall 310, an annular material receiving portion 320 arranged at the bottom of the annular outer wall, and a filter screen 330 attached to the inner side of the annular outer wall, wherein the annular outer wall is a porous structure; wherein the separation cover can be sealed and arranged at the upper side of the separation chamber, and the annular material receiving portion is in sealing contact with the bottom of the separation chamber; wherein an annular filtrate chamber 160 is formed between the inner side wall and the annular outer wall of the separation chamber, and wherein a drain pipe 170 connected to the annular filtrate chamber is arranged in the separation tank.

[0017] See Figure 3The filter cover also includes an inner cover body 340, which is connected to the annular material receiving portion. The inner cover body is provided with 8 through holes 341. A gravity cover plate 342 corresponding to the through holes is rotatably connected to one side of the inner cover body close to the annular outer wall. The gravity cover plate will naturally droop under the action of gravity until it is set to cover the through holes. When the embodiment is in the filtering state, the gravity cover plate has a one-way passing effect, so that the mixed liquid can pass through the inner cover body through the through holes. When the embodiment stops filtering, the gravity cover plate will automatically close the through holes to prevent the crystals inside the filter cover from overflowing, and thus prevent the crystals from falling into the separation chamber.

[0018] See Figure 1 A first sinking platform 181 and a second sinking platform 182 are provided on the separation tank at the opening of the separation chamber, two sealing rubber rings 10 are correspondingly embedded on the two sinking platforms, and the corresponding parts on the separation cover match the shapes of the two sinking platforms.

[0019] See Figure 1 and Figure 2 Four eccentric blocks 190 are rotatably connected on the separation tank and located at the outer areas of the two sinking platforms. Four pressing grooves 210 are provided on the upper surface edge of the separation cover. When the separation cover is closed with the separation tank cover, the eccentric blocks can be partially pressed on the pressing grooves by rotating the eccentric blocks.

[0020] See Figure 1 A sealing rubber ring is also embedded in the bottom of the annular connecting portion.

[0021] See Figure 4 The annular material receiving portion is plug-in-fitted with the annular outer wall; an upper plug-in ring 331 and a lower plug-in ring 332 are respectively formed at the upper and lower ends of the inner side of the annular outer wall, and the upper and lower sides of the filter screen are respectively plugged into the upper plug-in ring and the lower plug-in ring to form a fixed shape.

[0022] The feed pipe of the present embodiment is used to connect the cooled polyacrylate mixed liquid from the reactor, in which crystallized polyacrylate is suspended. These mixed liquids flow into the space surrounded by the filter cover through the feed port, and at the same time, the motor drives the centrifugal fan blades to rotate at high speed, stirring the mixed liquid to perform centrifugal motion. Under the action of centrifugation, the mixed liquid flows to one side of the annular outer wall. Since the gravity cover has a one-way passage effect, the mixed liquid can pass through the inner cover body through the through hole. Under the action of the filter screen, the crystals are blocked on the inner side of the filter screen, and the liquid flows to the annular filtrate cavity outside it and is discharged from the drain pipe. When the mixed liquid in the reactor is completely drained, the present embodiment stops working, and the gravity cover automatically closes the through hole to prevent the crystals inside the filter cover from overflowing, and the separation cover can be removed from the separation tank. At this time, the polyacrylate crystals are concentrated on the filter screen and the annular receiving portion, and then the filter screen and the crystals inside can be removed by reversely splitting the annular receiving portion and the annular outer wall.

[0023] It is obvious to those skilled in the art that the utility model can be changed in many ways, and such changes are not considered to be out of the scope of the utility model. All such modifications obvious to those skilled in the art will be included in the scope of the claims.

Claims

1. A separation and purification device for polyacrylate production, characterized in that: It includes a separation tank and a separation cover, a separation chamber is formed in the separation tank, the upper side of the separation chamber is uncovered, a centrifugal fan blade and a feed port are provided at the bottom center of the separation chamber, a motor is provided at the bottom of the separation tank which is transmission-connected to the centrifugal fan blade, and a feed pipe connected to the feed port is provided; a filter cover is provided at the bottom of the separation cover, the filter cover includes an annular outer wall, an annular material receiving portion provided at the bottom of the annular outer wall and a filter screen attached to the inner side of the annular outer wall, and the annular outer wall is a porous structure; the separation cover can be sealed and provided on the upper side of the separation chamber, and the annular material receiving portion is in sealing contact with the bottom of the separation chamber; an annular filtrate chamber is formed between the inner wall of the separation chamber and the annular outer wall, and a drain pipe connected to the annular filtrate chamber is provided in the separation tank.

2. The separation and purification equipment for polyacrylate production according to claim 1, characterized in that: The filter cover also includes an inner cover body, which is connected to the annular material receiving portion. The inner cover body is provided with a plurality of through holes. A gravity cover plate corresponding to the through holes is rotatably connected to one side of the inner cover body close to the annular outer wall. The gravity cover plate will naturally droop under the action of gravity until it is covered with the through holes.

3. The separation and purification equipment for polyacrylate production according to claim 2, characterized in that: A first sinking platform and a second sinking platform are arranged on the separation tank at the opening of the separation chamber, two sealing rubber rings are correspondingly embedded on the two sinking platforms, and the corresponding parts on the separation cover match the shapes of the two sinking platforms.

4. The separation and purification equipment for polyacrylate production according to claim 3, characterized in that: A plurality of eccentric blocks are rotatably connected on the separation tank and located at the outer areas of the two sinking platforms. A plurality of pressing grooves are provided on the upper surface edge of the separation cover. When the separation cover is closed with the separation tank, the eccentric blocks can be partially pressed on the pressing grooves by rotating the eccentric blocks.

5. The separation and purification equipment for polyacrylate production according to claim 3, characterized in that: A sealing rubber ring is also embedded at the bottom of the annular material receiving portion.

6. The separation and purification equipment for polyacrylate production according to claim 2, characterized in that: The annular material connection portion is plug-fitted with the annular outer wall.

7. The separation and purification equipment for polyacrylate production according to claim 6, characterized in that: An upper plug-in ring and a lower plug-in ring are respectively formed at the inner upper and lower ends of the annular outer wall, and the upper and lower sides of the filter screen are respectively plugged into the upper plug-in ring and the lower plug-in ring to be fixed.

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