CN114011352A - High-temperature steaming device for synthesizing polyurethane resin by wet method - Google Patents
High-temperature steaming device for synthesizing polyurethane resin by wet method Download PDFInfo
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- CN114011352A CN114011352A CN202111309063.1A CN202111309063A CN114011352A CN 114011352 A CN114011352 A CN 114011352A CN 202111309063 A CN202111309063 A CN 202111309063A CN 114011352 A CN114011352 A CN 114011352A
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- Prior art keywords
- steaming
- decatize
- polyurethane resin
- wet
- high temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/005—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the outlet side being of particular interest
Abstract
The invention discloses a high-temperature steaming device for synthesizing polyurethane resin by a wet method, and relates to the technical field of steaming devices. Including frame, fixture and decatize mechanism, the frame is U type frame, and the U type the inboard activity of frame is provided with the fixture that is used for the centre gripping to snatch, the bottom activity of frame is provided with the decatize mechanism that is used for decatize that is located under the fixture. Through setting up the heating plate, and the heating plate encircles the outer wall that sets up at the decatize chamber, and then when making the device steam, can carry out the even heating to the decatize intracavity, decatize the completion back, the device then runs through motor drive lead screw, and then adjust fixture's use height, and through hydraulic pressure mechanism's effect, take out the decatize intracavity with the rack via the effect of manipulator with the handle, and then be convenient for getting of decatize raw materials and put, the practicality of the device has effectively been strengthened, the work efficiency of the device is improved, guarantee decatize quality, do benefit to its and use widely.
Description
Technical Field
The invention relates to the technical field of steaming devices, in particular to a high-temperature steaming device for synthesizing polyurethane resin by a wet method.
Background
Polyurethane resin is short for polyurethane, is a high polymer material, is a new organic high polymer material, is known as fifth plastic, is widely applied to various fields of national economy due to excellent performance, and needs to be put into steaming equipment for steaming and heating in the processing process.
Among the prior art, current high temperature decatize equipment belongs to the boiler structure mostly, this kind of figurative high temperature decatize equipment of boiler all is comparatively inconvenient when placing and taking out polyurethane, the pot body volume of current decatize usefulness simultaneously is great, place the raw materials in decatize pot top and be difficult for being heated, the heating is inhomogeneous, and the structure of current decatize device sets up complicatedly, the operation process is loaded down with trivial details, the requirement for manual work is higher, for this reason, the high temperature decatize device that proposes wet process synthesis polyurethane resin solves above-mentioned problem.
Disclosure of Invention
The invention provides a high-temperature steaming device for synthesizing polyurethane resin by a wet method, which has the advantages of uniform heating, convenience in taking and placing and simple structure, and solves the problems that a common steaming device is not uniform in heating, convenient in taking and placing and simple in structure.
In order to realize the purposes of uniform heating, convenient taking and placing and simple structure, the invention provides the following technical scheme: the high-temperature steaming device for synthesizing the polyurethane resin by the wet method comprises a frame, a clamping mechanism and a steaming mechanism, wherein the frame is a U-shaped frame, the clamping mechanism for clamping and grabbing is movably arranged on the inner side of the U-shaped frame, and the steaming mechanism for steaming is movably arranged at the bottom of the frame and is positioned right below the clamping mechanism;
decatize mechanism includes inlet tube, outlet pipe, joint, steamer, heating plate, rack, handle, supporting shoe, decatize chamber and apron, the top activity of decatize mechanism is provided with the apron, the fixed steamer that is provided with in top of decatize mechanism, one side of decatize mechanism is provided with inlet tube, outlet pipe and joint respectively, the fixed decatize chamber that is provided with in inside of decatize mechanism, the inner wall activity in decatize chamber is provided with the rack, the fixed handle that is provided with in top of rack, the fixed heating plate that is provided with of outer wall in decatize chamber, the fixed supporting shoe that is provided with in bottom in decatize chamber.
As a preferable technical scheme of the invention, a motor is arranged in the rack, a screw rod is arranged at the output end of the motor, a nut seat is arranged on the outer wall of the screw rod, and a slide rod is arranged on one side of the nut seat.
In a preferred embodiment of the present invention, a ball is disposed inside the nut seat, and the nut seat is threadedly connected to the screw via the ball.
As a preferable technical scheme of the invention, a bearing seat is arranged at the top of the screw rod, and the screw rod is in threaded connection with the bearing seat.
As a preferable technical scheme of the invention, the top of the clamping mechanism is provided with a connecting block, the bottom of the connecting block is provided with a hydraulic mechanism, and one end of the hydraulic mechanism is provided with a manipulator.
As a preferable technical scheme of the invention, the output end of the motor is provided with a gear set, the output end of the motor is movably connected with the screw rod through the gear set, the motor is a positive and negative motor, and the model of the motor is YPZ 4508-4.
As a preferred technical scheme of the invention, the shape and the size of the heating sheet are matched with those of the steaming cavity, and the heating sheet is attached to the outer wall of the steaming cavity in a surrounding manner.
As a preferable technical scheme of the invention, a handle is fixedly arranged at the top of the cover plate, and an observation window is arranged on the surface of the steaming mechanism.
As a preferred technical solution of the present invention, the steamer is in communication with the steaming chamber.
Compared with the prior art, the invention provides the high-temperature steaming device for synthesizing the polyurethane resin by the wet method, which has the following beneficial effects:
1. this high temperature decatize device of wet process synthesis polyurethane resin, through setting up the heating plate, and the heating plate encircles the outer wall that sets up at decatize chamber, and then when making the device steam, can carry out even heating to decatize intracavity, decatize the completion back, the device then passes through the motor drive lead screw operation, and then adjust fixture's use height, and the effect through hydraulic pressure mechanism, take out the decatize intracavity with the rack via the effect of manipulator with the handle, and then be convenient for get of decatize raw materials and put, the practicality of the device has effectively been strengthened, improve the device's work efficiency, guarantee decatize the quality, do benefit to its and use widely.
2. This high temperature decatize device of wet process synthesis polyurethane resin, through setting up the motor, make its drive lead screw rotate, and then drive the slide bar through the nut seat and be axial motion along with the rotation direction of lead screw, and then adjust fixture's use height, and then fixture passes through the connecting block and slides on the slide bar, and then adjust its lateral position who uses, and then the regulation of the device of being convenient for, make the accuracy reinforcing of manipulator centre gripping, convenient device's use, and the device structure sets up simple easy operation, convenient to use personnel operate, effectively improve the device's usability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural view of a high-temperature steaming apparatus for wet-synthesizing a polyurethane resin according to the present invention;
FIG. 2 is a schematic structural diagram of a frame of a high-temperature steaming device for wet-synthesizing polyurethane resin according to the present invention;
fig. 3 is a schematic structural diagram of a steaming mechanism of a high-temperature steaming device for wet-synthesizing polyurethane resin according to the present invention;
fig. 4 is a front sectional view of a steaming mechanism of the high temperature steaming device for wet synthesizing polyurethane resin according to the present invention;
FIG. 5 is a schematic structural diagram of a robot of a high temperature steaming device for wet synthesizing polyurethane resin according to the present invention;
FIG. 6 is a schematic diagram of a screw rod structure of a high-temperature steaming device for wet synthesis of polyurethane resin according to the present invention;
in the figure: 1. a frame; 101. a motor; 102. a screw rod; 103. a nut seat; 104. a slide bar; 105. a bearing seat; 2. a clamping mechanism; 201. connecting blocks; 202. a hydraulic mechanism; 203. a manipulator; 3. a steaming mechanism; 301. a water inlet pipe; 302. a water outlet pipe; 303. a joint; 304. a steamer; 305. a heating plate; 306. placing a rack; 307. a handle; 308. a support block; 309. a steaming chamber; 310. a cover plate; 311. a handle; 312. and (4) an observation window.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-6, the invention discloses a high-temperature steaming device for synthesizing polyurethane resin by a wet method, comprising a frame 1, a clamping mechanism 2 and a steaming mechanism 3, wherein the frame 1 is a U-shaped frame, the clamping mechanism 2 for clamping and grabbing is movably arranged at the inner side of the U-shaped frame 1, and the steaming mechanism 3 for steaming is movably arranged at the bottom of the frame 1 and is positioned right below the clamping mechanism 2;
the steaming mechanism 3 comprises a water inlet pipe 301, a water outlet pipe 302, a joint 303, a steamer 304, a heating plate 305, a placing frame 306, a handle 307, a supporting block 308, a steaming cavity 309 and a cover plate 310, wherein the cover plate 310 is movably arranged at the top of the steaming mechanism 3, the steamer 304 is fixedly arranged at the top of the steaming mechanism 3, the water inlet pipe 301, the water outlet pipe 302 and the joint 303 are respectively arranged at one side of the steaming mechanism 3, the steaming cavity 309 is fixedly arranged in the steaming mechanism 3, the placing frame 306 is movably arranged on the inner wall of the steaming cavity 309, the handle 307 is fixedly arranged at the top of the placing frame 306, the heating plate 305 is fixedly arranged on the outer wall of the steaming cavity 309, the supporting block 308 is fixedly arranged at the bottom of the steaming cavity 309, the handle 311 is fixedly arranged at the top of the cover plate 310, an observation window 312 is arranged on the surface of the steaming mechanism 3, and the steaming cavity 309 are mutually communicated, through setting up heating plate 305, and heating plate 305 encircles the outer wall that sets up at decatizing chamber 309, and then when making the device steam, can carry out the even heating in decatizing chamber 309, steaming accomplishes the back, the device then drives the lead screw 102 operation through motor 101, and then adjust fixture 2's use height, and the effect through hydraulic pressure mechanism 202, take out decatizing chamber 309 with rack 306 via manipulator 203 and handle 311307's effect in, and then be convenient for decatizing getting of raw materials and put, the practicality of the device has effectively been strengthened, the work efficiency of the device is improved, guarantee decatizing quality, do benefit to its use widely.
Specifically, a motor 101 is arranged inside the machine frame 1, a screw rod 102 is arranged at an output end of the motor 101, a nut seat 103 is arranged on an outer wall of the screw rod 102, and a slide rod 104 is arranged on one side of the nut seat 103, so that the device drives the screw rod 102 to operate, and then the slide rod 104 is driven to move through the nut seat 103, and then the use height of the clamping mechanism 2 is effectively adjusted, and the use of the device is facilitated.
Specifically, the inside of the nut seat 103 is provided with a ball, the nut seat 103 is in threaded connection with the lead screw 102 through the ball, the top of the lead screw 102 is provided with a bearing seat 105, and the lead screw 102 is in threaded connection with the bearing seat 105, so that when the lead screw 102 rotates, the nut seat 103 drives the slide rod 104 to axially move along the rotation direction of the lead screw 102 through the ball, and then the use position of the nut seat is adjusted, the adjustment operation of the device is facilitated, and the usability of the device is effectively improved.
Specifically, the top of fixture 2 is provided with connecting block 201, and the bottom of connecting block 201 is provided with hydraulic pressure mechanism 202, and the one end of hydraulic pressure mechanism 202 is provided with manipulator 203 for fixture 2 slides on slide bar 104 through connecting block 201, and then adjusts the lateral position of its use, and then the regulation of the device of being convenient for, make the accuracy reinforcing of manipulator 203 centre gripping, the use of convenient device.
Specifically, the output end of the motor 101 is provided with a gear set, the output end of the motor 101 is movably connected with the screw rod 102 through the gear set, the motor 101 is a positive and negative motor, and the model of the motor 101 is YPZ4508-4, so that the motor 101 drives the screw rod 102 to operate through the gear set, the positive normal operation of the motor is guaranteed, the stability of the motor is maintained, the output of the device is further stabilized, and the stability of the device is improved.
Specifically, the shape and size of the heating plate 305 and the shape and size of the steaming cavity 309 are matched with each other, and the heating plate 305 surrounds the outer wall of the steaming cavity 309 in a fitting manner, so that when the device is steamed, the heating plate 305 surrounding the outer wall of the steaming cavity 309 in a fitting manner uniformly heats the inside of the steaming cavity 309, the non-uniformity of steaming heating is avoided, the using effect of the device is further influenced, the use of the device is further ensured, and the usability of the device is enhanced.
The working principle and the using process of the invention are as follows: when using, put into rack 306 with the raw materials that need decatize, and then cover apron 310, and then through heating plate 305, and heating plate 305 encircles the outer wall that sets up at decatize chamber 309, and then when making the device decatize, can evenly heat in the decatize chamber 309, decatize the back of accomplishing, then through motor 101, make its drive lead screw 102 rotate, and then drive slide bar 104 through nut seat 103 and be axial motion along with the direction of rotation of lead screw 102, and then adjust fixture 2's use height, and then fixture 2 slides on slide bar 104 through connecting block 201, and then adjust its horizontal position of use, and then the regulation of the device of being convenient for, make the accuracy reinforcing of manipulator 203 centre gripping, and then through its and handle 307's effect, take out rack 306 in the decatize chamber 309, accomplish the operation to the device through the aforesaid.
To sum up, this high temperature steaming device of wet process synthesis polyurethane resin, through setting up motor 101, make its drive lead screw 102 rotate, and then drive slide bar 104 through nut seat 103 and be axial motion along with the rotation direction of lead screw 102, and then adjust fixture 2's use height, and then fixture 2 passes through connecting block 201 and slides on slide bar 104, and then adjust its lateral position of using, and then the regulation of the device of being convenient for, make the accuracy reinforcing of manipulator 203 centre gripping, the use of convenient device, and the device structure sets up simple easy operation, the user of being convenient for operates, effectively improve the usability of the device, this steaming high temperature steaming device of wet process synthesis polyurethane resin, it is even to possess the heating, be convenient for get and put and simple structure's advantage, it is even to possess the heating in order to solve general steaming device, be convenient for get and put and simple structure's problem.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. High temperature steaming device of wet process synthesis polyurethane resin, including frame (1), fixture (2) and steaming mechanism (3), its characterized in that: the machine frame (1) is a U-shaped frame, a clamping mechanism (2) for clamping and grabbing is movably arranged on the inner side of the U-shaped machine frame (1), and a steaming mechanism (3) for steaming is movably arranged at the bottom of the machine frame (1) and is positioned right below the clamping mechanism (2);
the steaming mechanism (3) comprises a water inlet pipe (301), a water outlet pipe (302), a joint (303), a steamer (304), a heating piece (305), a placing frame (306), a handle (307), a supporting block (308), a steaming cavity (309) and a cover plate (310), a cover plate (310) is movably arranged at the top of the steaming mechanism (3), a steamer (304) is fixedly arranged at the top of the steaming mechanism (3), one side of the steaming mechanism (3) is respectively provided with a water inlet pipe (301), a water outlet pipe (302) and a joint (303), a steaming cavity (309) is fixedly arranged in the steaming mechanism (3), a placing frame (306) is movably arranged on the inner wall of the steaming cavity (309), the top of rack (306) is fixed and is provided with handle (307), the outer wall of decatizing chamber (309) is fixed and is provided with heating plate (305), the bottom of decatizing chamber (309) is fixed and is provided with supporting shoe (308).
2. A high temperature steaming device for wet synthesizing polyurethane resin according to claim 1, wherein: the motor (101) is arranged in the rack (1), the output end of the motor (101) is provided with the screw rod (102), the outer wall of the screw rod (102) is provided with the nut seat (103), and one side of the nut seat (103) is provided with the slide rod (104).
3. A high temperature steaming device for wet-synthesizing a polyurethane resin according to claim 2, wherein: the nut seat (103) is internally provided with a ball, and the nut seat (103) is in threaded connection with the screw rod (102) through the ball.
4. A high temperature steaming device for wet-synthesizing a polyurethane resin according to claim 3, wherein: the top of the screw rod (102) is provided with a bearing seat (105), and the screw rod (102) is in threaded connection with the bearing seat (105).
5. A high temperature steaming device for wet synthesizing polyurethane resin according to claim 1, wherein: the top of the clamping mechanism (2) is provided with a connecting block (201), the bottom of the connecting block (201) is provided with a hydraulic mechanism (202), and one end of the hydraulic mechanism (202) is provided with a manipulator (203).
6. A high temperature steaming device for wet-synthesizing a polyurethane resin according to claim 2, wherein: the output end of the motor (101) is provided with a gear set, the output end of the motor (101) is movably connected with the screw rod (102) through the gear set, the motor (101) is a positive and negative motor, and the model of the motor (101) is YPZ 4508-4.
7. A high temperature steaming device for wet synthesizing polyurethane resin according to claim 1, wherein: the shape and size of heating plate (305) and the shape and size of decatizing chamber (309) match each other, and heating plate (305) encircle the laminating and set up the outer wall in decatizing chamber (309).
8. A high temperature steaming device for wet synthesizing polyurethane resin according to claim 1, wherein: the top of apron (310) is fixed and is provided with handle (311), steaming mechanism's (3) surface is provided with observation window (312).
9. A high temperature steaming device for wet synthesizing polyurethane resin according to claim 1, wherein: the steamer (304) is in communication with a steaming chamber (309).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309063.1A CN114011352A (en) | 2021-11-05 | 2021-11-05 | High-temperature steaming device for synthesizing polyurethane resin by wet method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309063.1A CN114011352A (en) | 2021-11-05 | 2021-11-05 | High-temperature steaming device for synthesizing polyurethane resin by wet method |
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| CN114011352A true CN114011352A (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111309063.1A Pending CN114011352A (en) | 2021-11-05 | 2021-11-05 | High-temperature steaming device for synthesizing polyurethane resin by wet method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050037119A1 (en) * | 2003-08-13 | 2005-02-17 | Reika Kogyo Kabushiki Kaisha | Agitation mixer, pasteurizer, and cleaning device |
| CN212504677U (en) * | 2020-05-19 | 2021-02-09 | 青岛新宇田化工有限公司 | High-temperature steaming device for synthesizing polyurethane resin by wet method |
| CN212814055U (en) * | 2020-08-20 | 2021-03-30 | 南靖县益得利罐头食品有限公司 | Mushroom can boiling device |
| CN213728170U (en) * | 2020-09-18 | 2021-07-20 | 江苏金科森电子科技有限公司 | Workpiece cleaning device for machining of mechanical equipment |
| CN213793054U (en) * | 2020-09-28 | 2021-07-27 | 苏州博冠机械有限公司 | Belt cleaning device is used in production of hydraulic pressure integrated package |
-
2021
- 2021-11-05 CN CN202111309063.1A patent/CN114011352A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050037119A1 (en) * | 2003-08-13 | 2005-02-17 | Reika Kogyo Kabushiki Kaisha | Agitation mixer, pasteurizer, and cleaning device |
| CN212504677U (en) * | 2020-05-19 | 2021-02-09 | 青岛新宇田化工有限公司 | High-temperature steaming device for synthesizing polyurethane resin by wet method |
| CN212814055U (en) * | 2020-08-20 | 2021-03-30 | 南靖县益得利罐头食品有限公司 | Mushroom can boiling device |
| CN213728170U (en) * | 2020-09-18 | 2021-07-20 | 江苏金科森电子科技有限公司 | Workpiece cleaning device for machining of mechanical equipment |
| CN213793054U (en) * | 2020-09-28 | 2021-07-27 | 苏州博冠机械有限公司 | Belt cleaning device is used in production of hydraulic pressure integrated package |
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Application publication date: 20220208 |