Control device suitable for defoaming in reaction process of reaction kettle

Abstract

The utility model discloses a control device suitable for defoaming in the reaction process of a reaction kettle, and relates to the technical field of defoaming of reaction kettles, the control device suitable for defoaming in the reaction process of the reaction kettle comprises a bottom plate, a rectangular frame is arranged above the bottom plate, a rhombic frame is arranged above the rectangular frame, and the rhombic frame is arranged above the rectangular frame. A reaction kettle is mounted in the rhombic frame, a jacket is arranged outside the reaction kettle and is connected with the rhombic frame through a connecting piece, a discharge valve is mounted at the lower end of the reaction kettle, a material cover is arranged at the upper end of the reaction kettle and is in sliding connection with the reaction kettle, and a motor is mounted in the middle of the upper end of the material cover. According to the scheme, the problems that in the prior art, defoaming is carried out mainly by adding a defoaming agent or a valve is manually controlled through a sight glass, the process is tedious, and the product quality is difficult to guarantee are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of defoaming in reactors, in particular to a control device suitable for defoaming in a reaction process of a reactor. Background Art

[0002] In the production process of polyurethane products, the main raw materials include polyether polyols, polyester polyols, isocyanates, catalysts, etc. First, polyether polyols and polyester polyols are put into the kettle under negative pressure. After the feeding is completed, isocyanates, catalysts and other raw materials are put into the kettle through vacuum. As the reaction proceeds, several bubbles will appear on the surface of the raw materials.

[0003] The existing technology mainly defoams by adding defoaming agents or manually controlling the valve through a sight glass. The process is relatively cumbersome and it is difficult to ensure product quality. Therefore, we have proposed a control device suitable for defoaming in the reaction process of the reactor to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a control device suitable for defoaming in the reaction process of a reactor, so as to solve the problem that the existing technology proposed in the above background technology mainly performs defoaming by adding a defoaming agent or manually controls the valve through a sight glass, which is a relatively cumbersome process and makes it difficult to ensure product quality.

[0005] To achieve the above object, the present invention provides the following technical solution: a control device suitable for defoaming in a reaction process of a reactor, comprising a base plate, a rectangular frame mounted above the base plate, a diamond frame mounted above the rectangular frame, a reactor mounted inside the diamond frame, a jacket provided on the outside of the reactor, the jacket connected to the diamond frame via a connector, a discharge valve mounted at the lower end of the reactor, a material cover provided at the upper end of the reactor, and a sliding connection between the material cover and the reactor, a motor mounted at the middle position of the upper end of the material cover, a feed connector provided at the front end of the motor, a radar ranging sensor mounted on one side of the front end of the motor, and a detection end of the radar ranging sensor extending into the interior of the reactor, a vacuum joint mounted on one side of the rear end of the motor, a transmission seat provided on the outside of the motor, and the transmission seat fixedly connected to the material cover, pillars mounted above both ends of the diamond frame, a support plate mounted on the upper end of the pillar, a hydraulic cylinder mounted on the upper end of the support plate, an output end of the hydraulic cylinder passing through and extending to the lower end of the support plate, and being transmission-connected to the transmission seat.

[0006] Preferably, an electric heating mechanism is provided inside the jacket, a medium inlet is provided above the front end of the jacket, and a medium outlet is provided below the front end of the jacket.

[0007] Preferably, an infrared temperature sensor is provided on the other side of the front end of the motor, and the detection end of the infrared temperature sensor extends to the interior of the reactor.

[0008] Preferably, an observation window is provided at the rear end of the motor.

[0009] Preferably, a vent regulating valve is installed on the other side of the rear end of the motor.

[0010] Preferably, a rubber sealing ring is provided at the edge of the material cover.

[0011] Preferably, a stirring shaft is provided inside the reactor, and the output end of the motor passes through and extends into the interior of the reactor, and is transmission-connected to the stirring shaft via a coupling.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model arranges a radar ranging sensor on the material cover, which can detect the liquid level distance in real time. When foam is generated, the detection distance of the radar ranging sensor decreases. At this time, it will feedback a signal to the terminal, which controls the operation of the vacuum pump to vacuum and defoam the kettle, thereby solving the problem that the existing technology mainly relies on adding defoaming agents to perform defoaming or manually controlling the valve through a sight glass, which is a cumbersome process and difficult to ensure product quality.

[0014] The material cover and the reactor body of the utility model are of sliding structure and can be driven up and down by a hydraulic cylinder. After the radar ranging sensor detects the liquid level distance, the hydraulic cylinder can drive the material cover as close to the liquid surface as possible, thereby reducing the space in the cavity, making vacuuming fast and efficient, and improving the defoaming efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the rear structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the reactor of the utility model;

[0018] In the figure: 1. Base plate; 2. Rectangular frame; 3. Diamond frame; 4. Reactor; 5. Jacket; 6. Connector; 7. Medium inlet; 8. Medium outlet; 9. Discharge valve; 10. Material cover; 11. Motor; 12. Feed connector; 13. Radar ranging sensor; 14. Infrared temperature sensor; 15. Transmission seat; 16. Support; 17. Support plate; 18. Hydraulic cylinder; 19. Rubber sealing ring; 20. Vacuum connector; 21. Observation window; 22. Vent regulating valve; 23. Coupling; 24. Stirring shaft; 25. Electric heating mechanism. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figure 1-3 The utility model provides an embodiment: a control device suitable for defoaming in a reaction process of a reactor, comprising a bottom plate 1, a rectangular frame 2 is installed above the bottom plate 1, a diamond frame 3 is installed above the rectangular frame 2, a reactor 4 is installed inside the diamond frame 3, a jacket 5 is provided outside the reactor 4, the jacket 5 is connected to the diamond frame 3 through a connector 6, a discharge valve 9 is installed at the lower end of the reactor 4, a material cover 10 is provided at the upper end of the reactor 4, and the material cover 10 is slidably connected to the reactor 4, a motor 11 is installed at the middle position of the upper end of the material cover 10, and a front end of the motor 11 is provided with A feed connector 12, a radar ranging sensor 13 is installed on one side of the front end of the motor 11, and the detection end of the radar ranging sensor 13 extends to the inside of the reactor 4, a vacuum connector 20 is installed on one side of the rear end of the motor 11, a transmission seat 15 is provided on the outside of the motor 11, and the transmission seat 15 is fixedly connected to the material cover 10, pillars 16 are installed above both ends of the diamond frame 3, a support plate 17 is installed on the upper end of the pillar 16, a hydraulic cylinder 18 is installed on the upper end of the support plate 17, the output end of the hydraulic cylinder 18 passes through and extends to the lower end of the support plate 17, and is transmission-connected to the transmission seat 15.

[0021] See also Figure 1 An electric heating mechanism 25 is provided inside the jacket 5, a medium inlet 7 is provided above the front end of the jacket 5, and a medium outlet 8 is provided below the front end of the jacket 5. The jacket 5 is injected with a medium, such as water, and cooperates with the electric heating mechanism 25 to heat the medium, thereby achieving uniform heating of the material inside the reactor 4.

[0022] See also Figure 3 An infrared temperature sensor 14 is provided on the other side of the front end of the motor 11 , and the detection end of the infrared temperature sensor 14 extends to the interior of the reactor 4 , and the infrared temperature sensor 14 can detect the temperature inside the reactor 4 .

[0023] See also Figure 2 The rear end of the motor 11 is provided with an observation window 21, through which the raw material condition can be observed from the outside.

[0024] See also Figure 2 A vent regulating valve 22 is installed on the other side of the rear end of the motor 11, and the vent regulating valve 22 is used for emergency automatic pressure relief.

[0025] See also Figure 1A rubber sealing ring 19 is provided at the edge of the material cover 10. When the material cover 10 moves up and down with the hydraulic cylinder 18, its edge can be in close contact with the inner wall of the reactor 4 through the rubber sealing ring 19, thereby ensuring the sealing of the connection.

[0026] See also Figure 3 A stirring shaft 24 is provided inside the reactor 4. The output end of the motor 11 passes through and extends into the interior of the reactor 4, and is connected to the stirring shaft 24 through a coupling 23. The motor 11 can drive the stirring shaft 24 to rotate to stir and mix the materials.

[0027] Working principle: When in use, connect the vacuum joint 20 to the vacuum pump, evacuate the reactor 4 in advance to a certain negative pressure, and draw the material into the reactor through the feed joint 12. During the feeding process, turn on the motor 11 to drive the stirring shaft 24 to rotate, and the radar ranging sensor 13 monitors the distance to the liquid level in the reactor. After the feeding is completed, the feed joint 12, the vacuum pump and the vacuum joint 20 are closed, and the radar ranging sensor 13 feeds back the current liquid level distance to the terminal. The terminal drives the hydraulic cylinder 18 to operate based on the feedback distance, and the hydraulic cylinder 18 drives the material cover 10 to move down. When the radar ranging sensor 13 detects that the liquid level distance is 10, the hydraulic cylinder 18 drives the material cover 10 to move down. -15cm, the terminal stops the hydraulic cylinder 18 from continuing to run, and the radar ranging sensor 13 records the current distance. After completion, the medium is supplied to the jacket 5, and the raw materials are heated in conjunction with the electric heating mechanism 25. During the reaction process, the radar ranging sensor 13 can detect the liquid level distance in real time. When foam is generated, the detection distance of the radar ranging sensor 13 is reduced. At this time, it will feedback the signal to the terminal, and the terminal will control the operation of the vacuum pump to vacuum and defoam the kettle. Because the hydraulic cylinder 18 drives the material cover 10 as close to the liquid surface as possible, the space in the cavity is reduced, so that the vacuuming can be completed quickly and efficiently, thereby improving the defoaming efficiency.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A control device for defoaming during a reaction process in a reactor, comprising a bottom plate (1), characterized in that: A rectangular frame (2) is installed above the bottom plate (1), a diamond frame (3) is installed above the rectangular frame (2), a reactor (4) is installed inside the diamond frame (3), a jacket (5) is provided outside the reactor (4), the jacket (5) is connected to the diamond frame (3) through a connector (6), a discharge valve (9) is installed at the lower end of the reactor (4), a material cover (10) is provided at the upper end of the reactor (4), and the material cover (10) is slidably connected to the reactor (4), a motor (11) is installed at the middle position of the upper end of the material cover (10), a feed connector (12) is provided at the front end of the motor (11), and the motor (11) A radar ranging sensor (13) is installed on one side of the front end, and the detection end of the radar ranging sensor (13) extends to the interior of the reactor (4); a vacuum joint (20) is installed on one side of the rear end of the motor (11); a transmission seat (15) is provided on the outside of the motor (11), and the transmission seat (15) is fixedly connected to the material cover (10); pillars (16) are installed above both ends of the diamond frame (3); a support plate (17) is installed on the upper end of the pillar (16); a hydraulic cylinder (18) is installed on the upper end of the support plate (17); an output end of the hydraulic cylinder (18) passes through and extends to the lower end of the support plate (17), and is transmission-connected to the transmission seat (15).

2. The control device for defoaming in a reaction kettle according to claim 1, characterized in that: An electric heating mechanism (25) is provided inside the jacket (5), a medium inlet (7) is provided above the front end of the jacket (5), and a medium outlet (8) is provided below the front end of the jacket (5).

3. The control device for defoaming in a reaction kettle according to claim 1, characterized in that: An infrared temperature sensor (14) is provided on the other side of the front end of the motor (11), and a detection end of the infrared temperature sensor (14) extends to the interior of the reactor (4).

4. The control device for defoaming in a reaction kettle according to claim 1, characterized in that: An observation window (21) is provided at the rear end of the motor (11).

5. The control device for defoaming in a reaction kettle according to claim 1, characterized in that: A vent regulating valve (22) is installed on the other side of the rear end of the motor (11).

6. The control device for defoaming in a reaction kettle according to claim 1, characterized in that: A rubber sealing ring (19) is provided at the edge of the material cover (10).

7. The control device for defoaming in a reaction kettle according to claim 1, characterized in that: A stirring shaft (24) is provided inside the reactor (4), and the output end of the motor (11) passes through and extends into the interior of the reactor (4), and is transmission-connected to the stirring shaft (24) via a coupling (23).

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