Pipe chain communicating vessel for polyester polyol

Abstract

The utility model discloses a pipe chain communicating vessel for polyester polyol, and relates to the technical field of pipe chain connection. The top end of the reaction kettle is fixedly connected with an access pipe, the top end of the access pipe is fixedly connected with a quick-release pipe, the quick-release pipe is symmetrically provided with two quick-release ports about the center of a central vertical plane, a movable connecting pipe is detachably connected between the two quick-release ports, the top end of the movable connecting pipe is rotatably connected with a monitoring pipe, and the top end of the monitoring pipe is fixedly connected with a material control valve; a pullback disc is arranged at the top end of the material control valve, a plurality of reset springs are fixedly connected to the top end of the pullback disc, a corrugated pipe is fixedly connected to the middle of the top end of the pullback disc, a top table is fixedly connected between the reset springs and the top end of the corrugated pipe, and a feeding pipe is fixedly connected to the top end of the top table. According to the utility model, the monitoring pipe with the window is arranged between the movable connecting pipe and the corrugated pipe, and the feeding valve and the material control valve are arranged at the top end of the monitoring pipe and the bottom of the quick release pipe, so that the conveying efficiency of the communicating vessel and the quick maintenance capacity for dealing with faults are improved.

Description

Technical Field

[0001] This utility model belongs to the field of tubular chain connection technology, and more specifically, it relates to a tubular chain connector for polyester polyols. Background Technology

[0002] Polyurethane is a versatile synthetic resin with various product forms. It has advantages such as easy molding, good elasticity, wear resistance, and a wide range of products. It is commonly used as a raw material for products such as foam plastics, elastomers, coatings, and adhesives. It is widely used in transportation, construction, machinery, electronic equipment and other fields. Polyurethane is a high molecular weight compound polyester produced by the reaction of isocyanate and polyol (including polyester polyol, polyether polyol, etc.). In this reaction, polyester polyol and isocyanate need to be added to the reaction vessel one after the other. Therefore, in the production stage, polyester polyol needs to be fed into the reaction vessel through a tubular chain system, which requires the use of a corresponding communicating vessel.

[0003] The existing communicating vessels use cloth bags and clips to connect to the reactor. This solution has several drawbacks. First, during the connection process, the vessel needs to be connected to the reactor multiple times due to the need to add raw materials. This requires frequent clipping and docking with the reactor, resulting in a long feeding time and cumbersome operation, which affects the production efficiency of polyurethane. Second, the cloth bag is made of soft material and will rupture and leak after prolonged use due to fatigue. Because the cloth bag is opaque, this situation cannot be detected in time, which can easily lead to the communicating vessel jamming during the feeding process, meaning that the pipeline experiencing feeding failure cannot be cut off in a timely and effective manner.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] The purpose of this utility model is to provide a tubular chain connector for polyester polyols. The technical problem to be solved is as follows: When using the existing tubular chain connector for polyester polyols, the process of disassembling and assembling the buckles during repeated feeding is too cumbersome, which affects production efficiency.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A tubular chain connector for polyester polyols includes a reactor. An inlet pipe is fixedly connected to the top of the reactor. A quick-release pipe is fixedly connected to the top of the inlet pipe. Two quick-release ports are symmetrically arranged about the center of the vertical plane of the quick-release pipe. A movable connecting pipe is detachably connected between the two quick-release ports. A monitoring pipe is rotatably connected to the top of the movable connecting pipe. A control valve is fixedly connected to the top of the monitoring pipe. A pull-back plate is provided at the top of the control valve. Multiple return springs are evenly fixedly connected along the circumferential side of the top of the pull-back plate. A bellows is fixedly connected to the center of the top of the pull-back plate. A top platform is fixedly connected between the top of each return spring and the top of the bellows. A feeding pipe is fixedly connected to the top of the top platform.

[0008] As a further embodiment of this utility model: a back groove is provided at the bottom of the quick-release port, and an inlet groove is connected to the lower side of the back groove. The inlet groove and the back groove are in the shape of a "J".

[0009] As a further embodiment of this utility model: a feed valve is installed on one side of the inlet pipe, and a transparent viewing window is installed on one side of the monitoring pipe.

[0010] As a further embodiment of this utility model: the monitoring tube is rotatably connected to the movable connecting tube, and locking posts are fixedly connected to both sides of the movable connecting tube, with a handle fixedly connected between the two locking posts.

[0011] As a further embodiment of this utility model: the diameter of the two locking pins is smaller than the lateral diameter of the quick-release port.

[0012] As a further embodiment of this utility model: the movable connecting pipe is located directly above the quick-release tube, and its outer diameter is smaller than the inner diameter of the quick-release tube; the length of the bottom pipe of the locking post is greater than the vertical height of the back groove.

[0013] The beneficial effects of this utility model are:

[0014] 1. By installing an elastic bellows with multiple return springs at the feed direction and rotating the movable connecting pipe at the feed inlet to detachably connect it to the quick-release pipe at the top of the reactor, the quick-release pipe in the feed direction can be quickly disassembled and assembled with the reactor in the receiving direction through the rotational cooperation between the two centrally symmetrical quick-release ports and the two locking pins, as well as the rebound force of the return springs. This improves the receiving speed of the reactor and enhances the working efficiency of conveying polyester polyols.

[0015] 2. By installing a monitoring pipe with a viewing window between the movable pipe and the bellows, and installing a feed valve and a control valve at the top of the monitoring pipe and the bottom of the quick-release pipe, the feeding process can be monitored in real time. At the same time, in the event of a sudden situation such as pipe blockage, the feeding can be quickly cut off. In addition, with the quick disassembly structure, faults can be diagnosed and resolved in a timely manner, thereby improving the emergency response capability of the communicating vessel to sudden faults and extending its service life. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Enlarged detail view of point A in the middle;

[0019] Figure 3 This is a structural schematic diagram of the quick-release tube of this utility model.

[0020] In the diagram: 1. Reactor; 2. Inlet pipe; 3. Feed valve; 4. Quick-release pipe; 5. Quick-release port; 51. Retraction groove; 52. Inlet groove; 6. Movable connector; 7. Monitoring pipe; 8. Control valve; 9. Pull-back plate; 10. Return spring; 11. Bellows; 12. Top platform; 13. Feed pipe; 14. Viewing window; 15. Locking post; 16. Handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] like Figures 1 to 3As shown, the polyester polyol tubular connector includes a reactor 1. An inlet pipe 2 is fixedly connected to the top of the reactor 1. A feed valve 3 is installed on one side of the inlet pipe 2. A quick-release pipe 4 is fixedly connected to the top of the inlet pipe 2 via a flange. Two quick-release ports 5 are symmetrically arranged about the center of the vertical plane of the quick-release pipe 4. A movable connecting pipe 6 is detachably connected between the two quick-release ports 5. A monitoring pipe 7 is rotatably connected to the top of the movable connecting pipe 6. A control valve 8 is fixedly connected to the top of the monitoring pipe 7 via a flange. A return plate 9 is fixedly connected to the top of the control valve 8. Six return springs 10 are evenly fixedly connected to the circumferential side of the end. A bellows 11 is fixedly connected to the middle of the top of the pull-back plate 9. A top platform 12 is fixedly connected between the top of each return spring 10 and the top of the bellows 11. A feeding pipe 13 is fixedly connected to the top of the top platform 12. The feeding pipe 13 is connected to the tubular chain system for supplying polyester polyol, and the feeding pipe 13 is connected to the bellows 11. The tubular chain system connected to the feeding pipe 13 at the top of the polyester polyol will successively supply polyurethane raw materials to the bellows 11 multiple times to complete the overall feeding of the reactor 1.

[0023] The bottom end of the quick-release tube 4 is fixedly connected to the port of the feed valve 3 via a flange. The quick-release port 5 is J-shaped, with a back groove 51 at the bottom. The back groove 51 is downward and then folded back obliquely upward to connect to the guide groove 52. The guide groove 52 extends to the port to form a back groove channel. The quick-release port 5 has a streamlined arc structure, which facilitates subsequent rotation and pressing.

[0024] The top platform 12 is a fixed platform used to connect the bottom corrugated pipe 11 and the top feeding pipe 13. The corrugated pipe 11 is an elastic resettable pipe that can be adjusted in vertical length to assist in the feeding and stopping process. Each reset spring 10 is fixedly connected between the top platform 12 and the pull-back plate 9. The corrugated pipe 11 is installed in the center. Since the pull-back plate 9 is not fixed while the top platform 12 is fixed, the corrugated pipe 11 expands and contracts synchronously when the pull-back plate 9 is under force. At the same time, when the force pulling the pull-back plate 9 disappears, the reset spring 10 resets.

[0025] A material control valve 8 is installed on the pipe at the bottom of the pull-back plate 9. The bottom port of the material control valve 8 is fixedly connected to the monitoring pipe 7 via a flange. A transparent viewing window 14 is installed on one side of the monitoring pipe 7. The material control valve 8 and the viewing window 14 together allow the operator to control the feeding speed in real time.

[0026] The bottom of the monitoring tube 7 is rotatably connected to the movable tube 6. The movable tube 6 is fixedly connected to the two sides of the locking pins 15. The handle 16 is fixedly connected between the two locking pins 15. The diameter of the two locking pins 15 is smaller than the transverse diameter of the quick-release port 5, so that it can smoothly reach the return groove 51 during rotation. Since the two quick-release ports 5 are centrally symmetrical about the vertical plane of the center of the quick-release tube 4, when the operator holds the handle 16 and pulls the corrugated tube 11 down to rotate along the quick-release port 5, he can reach the top of the return groove 51 in the same direction at the same time.

[0027] It should be noted that the movable connector 6 is located directly above the quick-release tube 4, and its outer diameter is smaller than the inner diameter of the quick-release tube 4, which facilitates direct insertion during the pull-down process. At the same time, the length of the bottom pipe of the locking post 15 is greater than the vertical height of the back groove 51, so after the quick-release tube 4 is inserted, it can completely cover the quick-release opening 5 horizontally, thereby preventing material leakage.

[0028] The working principle of this utility model:

[0029] During the feeding of polyester polyol into reactor 1, the operator first opens the feed valve 3 at the top of reactor 1, then holds the handle 16 and pulls down the movable connecting pipe 6. During the pulling process, the bellows 11, along with each return spring 10, extends. The movable connecting pipe 6 then reaches the quick-release port 5 of the quick-release tube 4 directly below. Aligning the locking post 15 and the quick-release port 5, the operator rotates the handle 16. Because the movable connecting pipe 6 is rotatably connected to the monitoring tube 7 at the top, and the two quick-release ports 5 are centrally symmetrically aligned with the rotation directions of the two locking posts 15, the rotation allows it to reach the bottom of the return groove 51 along the arc-shaped guide groove 52. Upon release, the return spring 10 engages the return groove 51. At the top of the slot 51, the control valve 8 is then opened, and the tubular chain system transports the raw material to the reactor 1 through the feed pipe 13. During the transport process, the feeding process can be monitored at any time through the observation window 14. When the pipe gets stuck, the control valve 8 can be closed in time, and the movable pipe 6 can be rotated in the opposite direction after pulling down the handle 16. This, in conjunction with the reset springs 10, allows for quick disassembly of the transport pipe. At the same time, after the feeding is completed, the pipe can also be quickly disassembled using this action. After the feeding is completed, the feed valve 3 is closed to allow the reactor 1 to operate normally. During this process, the system reacts quickly to pipe blockages and disassembly after feeding, improving the overall working efficiency of the communicating vessel and the efficiency of handling faults.

[0030] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A tubular chain connector for polyester polyols, comprising a reaction vessel (1), characterized in that, The reactor (1) is fixedly connected to the top of the inlet pipe (2), and the top of the inlet pipe (2) is fixedly connected to the quick-release pipe (4). The quick-release pipe (4) has two quick-release ports (5) symmetrically arranged about the center of the vertical plane. The two quick-release ports (5) are detachably connected to the movable pipe (6). The top of the movable pipe (6) is rotatably connected to the monitoring pipe (7). The top of the monitoring pipe (7) is fixedly connected to the material control valve (8). The top of the material control valve (8) is provided with a pull-back plate (9). The top of the pull-back plate (9) is evenly fixedly connected to multiple return springs (10) along the circumferential side. The top of the pull-back plate (9) is fixedly connected to the middle of the top of the pull-back plate (9). The top of each return spring (10) and the top of the bellows (11) is fixedly connected to a top platform (12). The top of the top platform (12) is fixedly connected to a feeding pipe (13).

2. The tubular chain connector for polyester polyols according to claim 1, characterized in that, The quick-release opening (5) has a back groove (51) at the bottom, and the back groove (51) is connected to an inlet groove (52) on the lower side. The inlet groove (52) and the back groove (51) are in the shape of a "J".

3. The tubular chain connector for polyester polyols according to claim 1, characterized in that, A feed valve (3) is installed on one side of the access pipe (2), and a transparent viewing window (14) is installed on one side of the monitoring pipe (7).

4. The tubular chain connector for polyester polyols according to claim 2, characterized in that, The monitoring tube (7) is rotatably connected to the movable tube (6), and the movable tube (6) is fixedly connected to two sides with locking posts (15), and a handle (16) is fixedly connected between the two locking posts (15).

5. The tubular chain connector for polyester polyols according to claim 4, characterized in that, The diameter of the two locking pins (15) is smaller than the lateral diameter of the quick-release opening (5).

6. The tubular chain connector for polyester polyols according to claim 4, characterized in that, The movable connector (6) is located directly above the quick-release tube (4), and its outer diameter is smaller than the inner diameter of the quick-release tube (4). The length of the bottom pipe of the locking post (15) is greater than the vertical height of the back groove (51).

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