A dehydrating machine

Abstract

The present invention discloses a dehydrator, which relates to the field of material processing, and includes: a power assembly, which includes a power device and a screw conveying mechanism, the power device is connected to the screw conveying mechanism in a transmission manner to drive the screw conveying mechanism to rotate; a dehydrating device coaxially arranged with the screw conveying mechanism, the dehydrating device is a cylindrical structure, the screw conveying mechanism is arranged inside the dehydrating device, and the liquid can pass through the dehydrating device; a casing coaxially arranged with the screw conveying mechanism and the dehydrating device, the casing cover is arranged outside the dehydrating device, the casing is provided with a feed inlet, a discharge port and a liquid discharge port, the feed inlet is connected to the inside of the dehydrating device, the discharge port is connected to the inside of the dehydrating device, and the liquid discharge port is connected between the casing and the dehydrating device. The dehydrator is used to replace the manual dehydration when producing ABS resin by the emulsion grafting-bulk SAN blending method, which effectively reduces the labor intensity and improves the work efficiency.

Description

Technical Field

[0001] The invention relates to the field of material processing, in particular to a dehydrator. Background Art

[0002] ABS resin is a graft copolymer of acrylonitrile, 1,3-butadiene and styrene. The production method is basically a mixture of butadiene graft copolymer and acrylonitrile-styrene copolymer. With the improvement and upgrading of the process, ABS resin has a strong competitive advantage in many fields such as automobiles, electronics and electrical, plastic alloys, etc.

[0003] At present, the main methods for producing ABS resin are: emulsion grafting-bulk SAN blending method and continuous bulk polymerization method. The advantage of continuous bulk polymerization method is that the process is short and only one set of bulk polymerization equipment is needed. However, due to the limitations of bulk technology, the continuous bulk method currently has fewer product types. Emulsion grafting-bulk SAN blending method is currently the most important ABS production method.

[0004] The emulsion grafting-bulk SAN blending method is mainly divided into: synthesis of polybutadiene latex for grafting, grafting polymerization of polybutadiene latex, manufacture of bulk SAN particles, blending of grafted latex and SAN into ABS resin. The process flow is as follows: Figure 1 shown.

[0005] With the increasing demand for ABS resin and the high requirements for comprehensive economic performance, industrial production has higher and higher requirements for process equipment. However, the current emulsion grafting-bulk SAN blending method for producing ABS resin requires manual dehydration, which leads to high labor intensity and low dehydration efficiency. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a dehydrator to reduce the labor intensity when dehydrating ABS resin produced by the emulsion grafting-bulk SAN blending method, and improve the dehydration efficiency.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a dehydrator, comprising: a power assembly, which comprises a power device and a screw conveying mechanism, the power device is in transmission connection with the screw conveying mechanism to drive the screw conveying mechanism to rotate; a dehydrating device coaxially arranged with the screw conveying mechanism, the dehydrating device is a cylindrical structure, the screw conveying mechanism is arranged inside the dehydrating device, and liquid can pass through the dehydrating device to achieve dehydration; a casing coaxially arranged with the screw conveying mechanism and the dehydrating device, the casing cover is arranged on the outside of the dehydrating device, the casing is provided with a feed port, a feed port and a liquid discharge port, the feed port is communicated with the inside of the dehydrating device to transport the material to be dehydrated into the inside of the dehydrating device, the discharge port is communicated with the inside of the dehydrating device to discharge the material after dehydration is completed from the dehydrating device, and the liquid discharge port is communicated between the casing and the dehydrating device to discharge the liquid dehydrated from the dehydrating device.

[0009] Preferably, the spiral conveying mechanism includes a center rod and spiral blades, the power device is transmission-connected to the center rod to drive the center rod to rotate, the center rod has an axial diameter that gradually increases along its own axis from the feed port to the discharge port, the spiral blades are spirally arranged on the center rod along the axis of the center rod, and the spiral pitch of the spiral blades gradually decreases along the axis of the center rod from the feed port to the discharge port.

[0010] Preferably, the deliquoring device consists of at least two parts which are detachably connected.

[0011] Preferably, the deliquidation device includes reinforcing ribs and coaxially arranged filter mesh cylinder and screen cylinder, the screen cylinder is sleeved on the outside of the filter mesh cylinder, the screen hole diameter of the screen cylinder is larger than the mesh hole diameter of the filter mesh cylinder, and the reinforcing ribs are arranged on the outside of the screen cylinder.

[0012] Preferably, the dehydrator also includes a back-pressure device, which includes a spring support rod and a material baffle plate, wherein the material baffle plate is arranged at the discharge port, and one end of the spring support rod is hingedly connected to the casing, and the other end is hingedly connected to the material baffle plate.

[0013] Preferably, the casing is provided with a liquid leakage device for performing preliminary filtering on the material to be deliquored entering the feed inlet.

[0014] Preferably, the casing is provided with a washing port, and the washing port is communicated with the deliquescence device and the casing.

[0015] Preferably, the casing comprises a feed shell, a deliquidation shell and a discharge shell, the feed shell and the discharge shell are respectively arranged at two ends of the deliquidation shell, the deliquidation shell cover is arranged on the outside of the deliquidation device, the feed shell is provided with the feed port, the feed shell is communicated with the interior of the deliquidation device, the discharge shell is provided with the discharge port, the discharge shell is communicated with the interior of the deliquidation device, the deliquidation shell comprises a supporting frame and a cover plate, the cover plate is detachably buckled on the supporting frame to form an annular enclosed space between the supporting frame and the deliquidation device, the drain port is arranged on the cover plate, the drain port is communicated with the annular enclosed space, the deliquidation device is fixedly connected to the supporting frame, and the two ends of the deliquidation device are respectively fixedly connected to the feed shell and the discharge shell.

[0016] Preferably, the power device is a motor, and the power assembly further includes a coupling and a reducer. The motor is transmission-connected to the input end of the reducer, and the output end of the reducer is transmission-connected to the screw conveying mechanism through the coupling to drive the screw conveying mechanism to rotate.

[0017] Preferably, the dehydrator also includes a supporting assembly, which includes a supporting base and a reducer bracket, a first bearing bracket and a casing bracket arranged on the supporting base, the reducer is supported on the reducer bracket, and the first bearing and the second bearing are respectively arranged at both ends of the spiral conveying mechanism, the first bearing is supported on the first bearing bracket, the second bearing is supported on the casing, and the casing is supported on the casing bracket.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The dehydrator provided by the present invention comprises: a power assembly, which comprises a power device and a screw conveying mechanism, the power device is connected with the screw conveying mechanism in a transmission manner to drive the screw conveying mechanism to rotate; a dehydrating device coaxially arranged with the screw conveying mechanism, the dehydrating device is a cylindrical structure, the screw conveying mechanism is arranged inside the dehydrating device, and the liquid can pass through the dehydrating device to achieve dehydration; a casing coaxially arranged with the screw conveying mechanism and the dehydrating device, the casing cover is arranged outside the dehydrating device, the casing is provided with a feed inlet, a discharge port and a liquid discharge port, the feed inlet is connected with the inside of the dehydrating device to transport the material to be dehydrated into the inside of the dehydrating device, the discharge port is connected with the inside of the dehydrating device to discharge the dehydrated material from the dehydrating device, and the liquid discharge port is connected with the casing and the dehydrating device to discharge the liquid dehydrated from the dehydrating device. The dehydrating machine is used to replace the manual dehydration when producing ABS resin by the emulsion grafting-bulk SAN blending method. Compared with manual dehydration, the dehydrating machine effectively reduces the labor intensity and improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the flow chart of the emulsion grafting-bulk SAN blending method;

[0022] Figure 2 It is a schematic diagram of the structure of the dehydrator provided in an embodiment of the present invention.

[0023] Description of reference numerals: 100, dehydrator; 101, reducer; 102, coupling; 103, motor; 201, feed port; 2011, liquid leakage device; 202, housing; 2021, support frame; 2022, cover plate; 2023, washing port; 2024, drain port; 2025, feed shell; 2026, discharge shell; 203, discharge port; 301, first shaft head; 302, first bearing; 303 , center rod; 304, spiral blade; 305, second shaft head; 306, second bearing; 401, filter screen cylinder; 402, screen cylinder; 403, reinforcing ribs; 404, suspension rod; 501, spring support rod; 502, material baffle plate; 601, first packing sealing structure; 602, second packing sealing structure; 701, reducer bracket; 702, first bearing bracket; 703, housing bracket; 704, support base. DETAILED DESCRIPTION

[0024] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] The object of the present invention is to provide a dehydrator which can reduce the labor intensity when dehydrating ABS resin produced by an emulsion grafting-bulk SAN blending method and improve the dehydration efficiency.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 2As shown, this embodiment provides a dehydrator 100, including: a power assembly, which includes a power device and a screw conveying mechanism, the power device is transmission-connected to the screw conveying mechanism to drive the screw conveying mechanism to rotate; a dehydrating device coaxially arranged with the screw conveying mechanism, the dehydrating device is a cylindrical structure, the screw conveying mechanism is arranged inside the dehydrating device, and the liquid can pass through the dehydrating device to achieve dehydration; a casing 202 coaxially arranged with the screw conveying mechanism and the dehydrating device, the casing 202 is covered on the outside of the dehydrating device, the casing 202 is provided with a feed port 201, a feed port 203 and a liquid discharge port 2024, the feed port 201 is communicated with the inside of the dehydrating device to transport the material to be dehydrated into the inside of the dehydrating device, the discharge port 203 is communicated with the inside of the dehydrating device to discharge the dehydrated material from the dehydrating device, and the liquid discharge port 2024 is communicated between the casing 202 and the dehydrating device to discharge the liquid dehydrated by the dehydrating device. The dehydrator 100 is used to replace manual dehydration in the production of ABS resin by the emulsion grafting-bulk SAN blending method. Compared with manual dehydration, the dehydrator 100 effectively reduces manual labor intensity and improves work efficiency.

[0028] In this embodiment, the spiral conveying mechanism includes a central rod 303 and a spiral blade 304. The power device is connected to the central rod 303 in a transmission manner to drive the central rod 303 to rotate. The central rod 303 gradually increases in diameter along its own axis from the feed port 201 to the discharge port 203. The spiral blade 304 is spirally arranged on the central rod 303 along the axis of the central rod 303. The spiral pitch of the spiral blade 304 gradually decreases along the axis of the central rod 303 from the feed port 201 to the discharge port 203. Such an arrangement increases the mechanical extrusion of the material in the radial and axial directions, improves the compression ratio of the dehydrator 100, and thus achieves better dehydration performance.

[0029] Furthermore, a first shaft head 301 and a second shaft head 305 are respectively provided at both ends of the center rod 303, and the first shaft head 301 and the second shaft head 305 both coincide with the axis of the center rod 303. The power device is transmission-connected to the first shaft head 301 to drive the center rod 303 to rotate, and the interior of the center rod 303 is hollow and has a cylindrical structure.

[0030] In this embodiment, in order to facilitate disassembly and assembly, the dehydrating device is composed of at least two detachably connected parts. The specific dehydrating device in this embodiment is composed of a first part and a second part that are symmetrically arranged and detachably connected. It should be noted that the dehydrating device is not limited to being divided into a first part and a second part. The dehydrating device can be divided into multiple parts according to the needs of disassembly and assembly during specific use.

[0031] Furthermore, the deliquidation device includes a reinforcing rib 403 and a coaxially arranged filter screen cylinder 401 and a screen cylinder 402, the screen cylinder 402 is sleeved on the outside of the filter screen cylinder 401, the screen hole diameter of the screen cylinder 402 is larger than the mesh hole diameter of the filter screen cylinder 401, and the outside of the screen cylinder 402 is provided with a reinforcing rib 403. The outside of the filter screen cylinder 401 is supported by the screen cylinder 402, and the purpose of providing the reinforcing rib 403 is to further increase the strength. In addition, correspondingly, the filter screen cylinder 401 is composed of a first screen cylinder and a second screen cylinder, and the screen cylinder 402 is composed of a first screen cylinder and a second screen cylinder, the first screen cylinder is sleeved on the outside of the first screen cylinder, and the two are fixedly connected to form the first part of the deliquidation device, and the second screen cylinder is sleeved on the outside of the second screen cylinder, and the two are fixedly connected to form the second part of the deliquidation device.

[0032] Furthermore, the first part and the second part are connected by bolts.

[0033] In this embodiment, the dehydrator 100 further includes a back pressure device, which includes a spring support rod 501 and a baffle plate 502. The baffle plate 502 is arranged at the discharge port 203. One end of the spring support rod 501 is hingedly connected to the housing 202, and the other end is hingedly connected to the baffle plate 502. The back pressure device can control the extrusion force and the discharge concentration. The high-concentration slurry is discharged from the discharge port 203, and the filtrate / water passes through the dehydration device and is collected at the discharge port 2024 for discharge. The detailed structure of the spring support rod 501 belongs to the prior art and will not be described here. For example, a gas spring support rod can be selected.

[0034] In this embodiment, a liquid leakage device 2011 for preliminarily filtering the liquid material to be deliquated entering the feed port is provided on the housing 202. By providing the liquid leakage device 2011, the liquid material to be deliquated is first filtered during feeding, and the filtrate is discharged. The specific structure of the liquid leakage device 2011 belongs to the prior art, as long as it can filter the liquid material to be deliquated and discharge the filtrate.

[0035] In this embodiment, the housing 202 is provided with a washing port 2023, and the washing port 2023 is connected to the deliquidation device and the housing 202. During specific use, the washing liquid is flushed between the deliquidation device and the housing 202 through the washing port 2023, and the outer surface of the deliquidation device is flushed with the flushing liquid, thereby removing the accumulated materials on the outer surface of the deliquidation device, so that the filtrate can be better discharged through the deliquidation device, and better deliquidation performance is achieved.

[0036] In this embodiment, the housing 202 includes a feed housing 2025, a deliquidation housing, and a discharge housing 2026. The feed housing 2025 and the discharge housing 2026 are respectively arranged at the two ends of the deliquidation housing, and the deliquidation housing cover is arranged outside the deliquidation device. The feed housing 2025 is provided with a feed port 201, and the feed housing 2025 is connected to the inside of the deliquidation device. The discharge housing 2026 is provided with a discharge port 203, and the discharge housing 2026 is connected to the inside of the deliquidation device. The shell includes a support frame 2021 and a cover plate 2022, the cover plate 2022 is detachably buckled on the support frame 2021, so that an annular closed space is formed between the support frame 2021 and the deliquidation device, the drain port 2024 is provided on the cover plate 2022, the drain port 2024 is communicated with the annular closed space, the deliquidation device is fixedly connected to the support frame 2021, and the two ends of the deliquidation device are respectively fixedly connected to the feed shell 2025 and the discharge shell 2026. Specifically in this embodiment, the cover plate 2022 is connected to the support frame 2021 by bolts, the middle part of the deliquidation device is fixed to the support frame 2021 by a suspension rod 404, and the two ends of the deliquidation device are respectively fixedly connected to the feed shell 2025 and the discharge shell 2026 by bolts.

[0037] Furthermore, in order to facilitate liquid drainage, there are multiple liquid drainage ports 2024 , the specific number of which is determined according to actual needs, and the multiple liquid drainage ports 2024 are arranged along the axial direction of the housing 202 .

[0038] Further, the feed port 201 is arranged at the top of the feed shell 2025, and the liquid leakage device 2011 is arranged at the bottom of the feed shell. The discharge port 203 is arranged on the discharge shell 2026. The liquid discharge port 2024 is arranged at the bottom of the deliquescence shell. The washing port 2023 is arranged at the top of the deliquescence shell.

[0039] In this embodiment, the power device is a motor 103, and the power assembly further includes a coupling 102 and a reducer 101. The motor 103 is transmission-connected to the input end of the reducer 101, and the output end of the reducer 101 is transmission-connected to the screw conveying mechanism through the coupling 102 to drive the screw conveying mechanism to rotate. Specifically, the output end of the reducer 101 is transmission-connected to the first shaft head 301 through the coupling 102 to drive the screw conveying mechanism to rotate.

[0040] In this embodiment, the dehydrator 100 further includes a support assembly, which includes a support base 704 and a reducer bracket 701, a first bearing bracket 702 and a housing bracket 703 arranged on the support base 704. The reducer 101 is supported on the reducer bracket 701. The two ends of the spiral conveying mechanism are respectively provided with a first bearing 302 and a second bearing 306. The first bearing 302 is supported on the first bearing bracket 702, and the second bearing 306 is supported on the housing 202, and the housing 202 is supported on the housing bracket 703. Specifically, the first shaft head 301 is provided with a first bearing 302, and the second shaft head 305 is provided with a second bearing 306.

[0041] Furthermore, the first shaft head 301 and the second shaft head 305 are sealed with the two ends of the housing 202 (the feed housing 2025 and the discharge housing 2026) respectively through the first packing sealing structure 601 and the second packing sealing structure 602, so that the housing 202 has good sealing performance. As for the specific selection of the first packing sealing structure 601 and the second packing sealing structure 602, it belongs to the prior art, as long as the packing sealing can be achieved.

[0042] When the dehydrator 100 provided in this embodiment is in operation, the motor drives the central rod 303 and the spiral blade 304 to rotate through the reducer, the coupling 102, and the first shaft head 301, and the material to be dehydrated enters from the feed port 201 and is transported to the discharge port 203 by the spiral blade 304. When the slurry passes through the dehydration device, it is dehydrated by mechanical extrusion (mechanical extrusion is achieved by the diameter change of the central rod 303 and the pitch change of the spiral blade 304), and the filtrate passes through the dehydration device and is discharged from the drainage hole. At the same time, the washing port 2023 is flushed with flushing liquid. The dehydrated material reaches the discharge port 203, and through the regulation of the back pressure device (the material will have a certain pressure when it reaches the discharge port 203 due to the diameter change of the central rod 303 and the pitch change of the spiral blade 304, forming a certain pressure difference with the pressure of the back pressure device), the high-concentration material (pressure is greater than the pressure of the back pressure device) is discharged from the discharge port 203, and the filtrate / water passes through the dehydration device and is collected at the drainage port 2024 for discharge.

[0043] It should be noted that the liquid removed in this embodiment is mainly water. The dehydrator 100 provided in this embodiment is mainly used for dehydration, but is not limited to dehydration, and can also be used for separation of other liquids and materials.

[0044] In the description of the present invention, it should be noted that certain words indicating orientation or positional relationships are only for the purpose of facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to 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.

[0045] In the description of the present invention, it should be noted that "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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A dehydrator, characterized in that: include: A power assembly includes a power device and a screw conveying mechanism, wherein the power device is drivingly connected to the screw conveying mechanism to drive the screw conveying mechanism to rotate; A deliquidation device is coaxially arranged with the spiral conveying mechanism, the deliquidation device is a cylindrical structure, the spiral conveying mechanism is arranged inside the deliquidation device, and the liquid can pass through the deliquidation device to achieve deliquidation; A casing is coaxially arranged with the screw conveying mechanism and the deliquidation device, and the casing cover is arranged outside the deliquidation device. The casing is provided with a feed port, a discharge port and a liquid discharge port. The feed port is connected to the inside of the deliquidation device to transport the material to be deliquidated to the inside of the deliquidation device, the discharge port is connected to the inside of the deliquidation device to discharge the deliquidated material from the deliquidation device, and the liquid discharge port is connected to the casing and the deliquidation device to discharge the liquid discharged from the deliquidation device; The screw conveying mechanism includes a center rod and a spiral blade. The power device is connected to the center rod to drive the center rod to rotate. The center rod has an axial diameter that gradually increases along its own axis from the feed port to the discharge port. The spiral blade is spirally arranged on the center rod along the axis of the center rod. The spiral pitch of the spiral blade gradually decreases along the axis of the center rod from the feed port to the discharge port. The casing comprises a feed shell, a deliquidation shell and a discharge shell, the feed shell and the discharge shell are respectively arranged at the two ends of the deliquidation shell, the deliquidation shell cover is arranged on the outside of the deliquidation device, the feed shell is provided with a feed port, the feed shell is communicated with the inside of the deliquidation device, the discharge shell is provided with a discharge port, the discharge shell is communicated with the inside of the deliquidation device, the deliquidation shell comprises a support frame and a cover plate, the cover plate is detachably buckled on the support frame to form an annular closed space between the support frame and the deliquidation device, the discharge port is arranged on the cover plate, the discharge port is communicated with the annular closed space, the deliquidation device is fixedly connected to the support frame, and the two ends of the deliquidation device are respectively fixedly connected to the feed shell and the discharge shell; The power device is a motor, and the power assembly also includes a coupling and a reducer. The motor is connected to the input end of the reducer by transmission, and the output end of the reducer is connected to the screw conveying mechanism by transmission through the coupling to drive the screw conveying mechanism to rotate. It also includes a supporting assembly, which includes a supporting base and a reducer bracket, a first bearing bracket and a casing bracket arranged on the supporting base. The reducer is supported on the reducer bracket, and a first bearing and a second bearing are respectively arranged at both ends of the screw conveying mechanism. The first bearing is supported on the first bearing bracket, the second bearing is supported on the casing, and the casing is supported on the casing bracket.

2. The dehydrator according to claim 1, characterized in that: The deliquoring device is composed of at least two parts which are detachably connected.

3. The dehydrator according to claim 1, characterized in that: The deliquidation device includes reinforcing ribs and a coaxially arranged filter mesh cylinder and screen cylinder. The screen cylinder is sleeved on the outside of the filter mesh cylinder. The screen hole diameter of the screen cylinder is larger than the mesh hole diameter of the filter mesh cylinder. The reinforcing ribs are arranged on the outside of the screen cylinder.

4. The dehydrator according to claim 1, characterized in that: It also includes a back-pressure device, which includes a spring support rod and a material baffle plate. The material baffle plate is arranged at the discharge port, and one end of the spring support rod is hingedly connected to the casing, and the other end is hingedly connected to the material baffle plate.

5. The dehydrator according to claim 1, characterized in that: The casing is provided with a liquid leakage device for initially filtering the material to be deliquored entering the feed port.

6. The dehydrator according to claim 1, characterized in that: The housing is provided with a washing port, and the washing port is communicated with the deliquescence device and the housing.

Images