Polyurethane reaction kettle condensation recovery device

Abstract

The utility model relates to the field of polyurethane production, and particularly discloses a polyurethane reaction kettle condensation recovery device which comprises a reaction kettle, a recovery pipe is mounted on the outer side of the reaction kettle, a condensation sleeve is sleeved on the outer side wall of the recovery pipe, a recovery bin is mounted at one end of the condensation sleeve, and a feeding pipe is connected between the lower end of the recovery bin and the reaction kettle. The upper end of the feeding pipe is located in the recycling bin and connected with a discharging container, the discharging container comprises a lower container body and an upper container body, a U-shaped pipe is connected between the upper container body and the lower container body, a rubber film is connected to the position, located on the upper surface of the lower container body, of the lower portion of the upper container body, and an upper sealing cover is installed at the upper end of the recycling bin. After the liquid level rises to the position above the U-shaped pipe, a pressure difference is formed between the recycling bin and the outside, the siphon effect is formed in the whole blanking container, the rubber film between the lower container body and the upper container body is sucked to the inner side of the upper container body, a channel among the lower container body, the feeding pipe and the recycling bin is opened, and raw materials are conveniently recycled.

Description

Technical Field

[0001] The utility model relates to the field of polyurethane production, in particular to a polyurethane reaction kettle condensation recovery device. Background Art

[0002] Polyurethane is an important polymer material made by the reaction of polyisocyanates, oligomer polyols, and organic small molecule polyols. Polyurethane has the advantages of wear resistance, oil resistance, weather resistance, aging resistance, high tear strength, and good low-temperature flexibility. It is usually used in many fields in the form of foam plastics, elastomers, coatings, adhesives, fibers, synthetic leather, waterproof materials, and paving materials. During the preparation of polyurethane, the generated water and unreacted alcohol are discharged from the gas phase outlet.

[0003] However, since the gaseous substances recovered from the current polyurethane are directly discharged into the reactor after being cooled outside the reactor, and since a mixture of gas and liquid is injected, the gaseous substances cannot be processed in the reactor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a polyurethane reactor condensation recovery device, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical scheme: a polyurethane reactor condensation recovery device, comprising a reactor, a recovery pipe is installed on the outside of the reactor, a condensation sleeve is sleeved on the outer wall of the recovery pipe, a recovery bin is installed at one end of the condensation sleeve, a feed pipe is connected between the lower end of the recovery bin and the reactor, the upper end of the feed pipe is located inside the recovery bin and connected to a blanking gallbladder, the blanking gallbladder comprises: a lower gallbladder body and an upper gallbladder body, a U-shaped tube is connected between the upper gallbladder body and the lower gallbladder body, a rubber membrane is connected to the upper surface of the lower gallbladder body below the upper gallbladder body, and an upper sealing cover is installed at the upper end of the recovery bin.

[0006] As a further solution of the utility model: a cooling bin is installed on the outer side of the reactor, and a cooling water pipe is installed on the side surface of the cooling bin.

[0007] As a further solution of the utility model: a stirring motor is installed at the upper end of the reactor, and a feeding pipe is provided on one side of the stirring motor at the upper end of the reactor.

[0008] As a further solution of the utility model: the rubber membrane is fixedly connected to the lower gallbladder body and the upper gallbladder body, and the U-shaped tube is connected to the upper gallbladder body and the lower gallbladder body.

[0009] As a further solution of the utility model: the feeding pipe is connected with the blanking bladder and the reaction kettle.

[0010] As a further solution of the utility model: the cooling water pipe is arranged through the cooling bin, and a drainage pipe is installed below the cooling bin.

[0011] As a further solution of the utility model: the recovery pipe is connected to the reactor through-connection, and cooling water is filled between the condensation sleeve and the recovery pipe.

[0012] As a further solution of the utility model: the feed pipe is connected to the reactor.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The cooling water filled inside the condensing sleeve outside the recovery pipe can preliminarily cool the gaseous raw materials and then discharge them into the recovery bin. Inside the recovery bin, the gaseous raw materials after the preliminary cooling can be cooled again for liquefaction and recovery.

[0015] When the liquid level rises to a position above the U-shaped tube, a pressure difference is formed between the recovery bin and the outside, and a siphon effect is formed inside the entire blanking bladder. The rubber membrane between the lower bladder body and the upper bladder body is attracted to the inner side of the upper bladder body, opening the passage between the lower bladder body, the feeding pipe and the recovery bin, thereby facilitating the recovery of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a polyurethane reactor condensation recovery device;

[0017] Figure 2 It is a structural schematic diagram of a recovery bin in a polyurethane reactor condensation recovery device;

[0018] Figure 3 This is a schematic diagram of the internal structure of a recovery bin in a polyurethane reactor condensation recovery device;

[0019] Figure 4 It is a cross-sectional view of a recovery bin in a polyurethane reactor condensation recovery device;

[0020] Figure 5 The figure is a top view of a reactor in a polyurethane reactor condensation recovery device.

[0021] In the figure: 1. Reactor; 2. Recovery pipe; 3. Recovery bin; 4. Cooling water pipe; 5. Stirring motor; 6. Feed pipe; 7. Support frame; 8. Condensation sleeve; 9. Dropping bladder; 10. Cooling bin; 301. Upper cover; 302. Feeding pipe; 901. U-shaped tube; 902. Lower bladder body; 903. Upper bladder body; 904. Rubber membrane. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-5 As shown, this embodiment provides a polyurethane reactor condensation recovery device, including a reactor 1, a recovery pipe 2 is installed on the outside of the reactor 1, the recovery pipe 2 is connected to the reactor 1, a condensation sleeve 8 is sleeved on the outer wall of the recovery pipe 2, cooling water is filled between the condensation sleeve 8 and the recovery pipe 2, a recovery bin 3 is installed at one end of the condensation sleeve 8, a feed pipe 302 is connected between the lower end of the recovery bin 3 and the reactor 1, the feed pipe 302 is connected to the blanking liner 9 and the reactor 1, and the feed pipe 302 is connected to the blanking liner 9 and the reactor 1. The upper end is located inside the recovery bin 3 and connected to the blanking gall 9. The blanking gall 9 includes: a lower gall body 902 and an upper gall body 903. A U-shaped tube 901 is connected between the upper gall body 903 and the lower gall body 902. The U-shaped tube 901 is connected to the upper gall body 903 and the lower gall body 902. A rubber membrane 904 is connected to the upper surface of the lower gall body 902 below the upper gall body 903. The rubber membrane 904 is fixedly connected to the lower gall body 902 and the upper gall body 903. An upper cover 301 is installed at the upper end of the recovery bin 3.

[0024] like Figure 2-5 As shown, in the present embodiment, a cooling bin 10 is installed on the outside of the reactor 1, a drain pipe is installed below the cooling bin 10, a cooling water pipe 4 is installed on the side surface of the cooling bin 10, a support frame 7 is installed in an array on the outside of the cooling bin 10, the cooling water pipe 4 is connected to the cooling bin 10, a stirring motor 5 is installed on the upper end of the reactor 1, a feeding pipe 6 is provided on one side of the stirring motor 5 at the upper end of the reactor 1, and the feeding pipe 6 is connected to the reactor 1.

[0025] The working principle of the utility model is as follows: during production, the raw materials of the reaction are filled into the reactor 1 through the feed pipe 6 above the reactor 1, and the raw materials are mixed and stirred by the stirring motor 5 to control the production of the raw materials. When the gas produced in the generation is discharged from the position of the recovery pipe 2, the cooling water filled in the condensation sleeve 8 outside the recovery pipe 2 can be used to preliminarily cool the gas raw materials and then discharge them into the recovery bin 3. Then, the gas raw materials are liquefied in the recovery pipe 2 and then collected. When the liquid level rises to overflow the U-shaped pipe 9, the gas raw materials are cooled and cooled. 01, a pressure difference is formed between the recovery bin 3 and the outside, and a siphon effect is formed inside the entire blanking gall 9. The rubber membrane 904 between the lower gall body 902 and the upper gall body 903 is attracted to the inner side of the upper gall body 903, and the passage between the lower gall body 902, the feeding pipe 302 and the recovery bin 3 is opened. The liquid raw material recovered in the recovery bin 3 is returned to the interior of the reactor 1. After the discharge of the liquid raw material is completed, the rubber membrane 904 automatically falls down to close the passage of the feeding pipe 302, so that the next recycling process can be realized.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurethane reactor condensation recovery device, comprising a reactor (1), characterized in that: A recovery pipe (2) is installed on the outside of the reaction kettle (1), and a condensation sleeve (8) is sleeved on the outer wall of the recovery pipe (2). A recovery bin (3) is installed at one end of the condensation sleeve (8). A feed pipe (302) is connected between the lower end of the recovery bin (3) and the reaction kettle (1). The upper end of the feed pipe (302) is located inside the recovery bin (3) and is connected to a blanking gallbladder (9). The blanking gallbladder (9) comprises: a lower gallbladder body (902) and an upper gallbladder body (903). A U-shaped tube (901) is connected between the upper gallbladder body (903) and the lower gallbladder body (902). A rubber membrane (904) is connected to the upper surface of the lower gallbladder body (902) below the upper gallbladder body (903). An upper cover (301) is installed at the upper end of the recovery bin (3).

2. A polyurethane reactor condensation recovery device according to claim 1, characterized in that: A cooling bin (10) is installed on the outside of the reaction kettle (1), and a cooling water pipe (4) is installed on the side surface of the cooling bin (10).

3. A polyurethane reactor condensation recovery device according to claim 1, characterized in that: A stirring motor (5) is installed at the upper end of the reaction kettle (1), and a feeding pipe (6) is provided on one side of the stirring motor (5) at the upper end of the reaction kettle (1).

4. A polyurethane reactor condensation recovery device according to claim 1, characterized in that: The rubber membrane (904) is fixedly connected to the lower bile body (902) and the upper bile body (903), and the U-shaped tube (901) is connected to the upper bile body (903) and the lower bile body (902).

5. A polyurethane reactor condensation recovery device according to claim 1, characterized in that: The feeding pipe (302) is connected to the feeding container (9) and the reaction kettle (1).

6. A polyurethane reactor condensation recovery device according to claim 2, characterized in that: The cooling water pipe (4) is arranged to penetrate the cooling bin (10), and a drainage pipe is installed below the cooling bin (10).

7. A polyurethane reactor condensation recovery device according to claim 1, characterized in that: The recovery pipe (2) is connected to the reactor (1), and cooling water is filled between the condensation sleeve (8) and the recovery pipe (2).

8. A polyurethane reactor condensation recovery device according to claim 3, characterized in that: The feed pipe (6) is arranged to penetrate the reaction kettle (1).

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