Device for preparing vinyl chloride by cracking dichloroethane

Abstract

The utility model relates to the technical field of vinyl chloride preparation devices, in particular to a device for preparing vinyl chloride by cracking dichloroethane, which comprises a cracking furnace body, two sides of the cracking furnace body are fixedly connected with two support frames, the top ends of the support frames are fixedly connected with connecting sleeves, and the same furnace tube is fixedly connected between the two connecting sleeves. A rotating ring is rotationally connected to the connecting sleeve, two handles are fixedly connected to the rotating ring, two guide grooves are formed in the rotating ring, a cover plate abuts against one side of the connecting sleeve, a connecting pipe is fixedly connected to the cover plate, two positioning blocks are fixedly connected to the cover plate, the positioning blocks are clamped with the connecting sleeve, and guide shafts are fixedly connected to the positioning blocks. The guide shaft extends into the guide groove and is in sliding connection with the rotating ring, and a clamping structure is arranged on the handle. The furnace tube end cover plate can be quickly disassembled, so that the interior of the furnace tube is conveniently cleaned, and the interior of the furnace tube is conveniently overhauled and maintained.

Description

Technical Field

[0001] The utility model relates to a vinyl chloride preparation device, in particular to a device for preparing vinyl chloride by cracking ethylene dichloride, belonging to the technical field of vinyl chloride preparation devices. Background Art

[0002] In the process of vinyl chloride production, ethylene dichloride needs to be cracked in a box-type cracking furnace to produce vinyl chloride. During the cracking, the raw materials will enter the furnace tube of the box-type cracking furnace for heating and cracking. In the process of ethylene dichloride cracking, coke will be produced and attached to the inner wall of the furnace tube, so the inner wall of the furnace tube needs to be cleaned regularly.

[0003] However, two covers are installed at both ends of the furnace tube of the conventional cracking furnace by multiple bolts to seal the furnace tube. Therefore, when the inside of the furnace tube needs to be cleaned, multiple bolts need to be twisted with a wrench, which wastes a lot of time and is not convenient for quick removal of the cover plate, thereby making it inconvenient to clean the inside of the furnace tube. Utility Model Content

[0004] The purpose of the utility model is to provide a device for preparing vinyl chloride by cracking ethylene dichloride in order to solve the above problems, which can realize the rapid disassembly of the cover plate at the end of the furnace tube, thereby facilitating the cleaning of the inside of the furnace tube and facilitating the inspection and maintenance of the inside of the furnace tube.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme. A device for preparing vinyl chloride by cracking ethylene dichloride comprises a cracking furnace body, two sides of the cracking furnace body are fixedly connected with two support frames, the top of the support frame is fixedly connected with a connecting sleeve, the same furnace pipe is fixedly connected between the two connecting sleeves, a fixing structure is provided on the connecting sleeve, the fixing structure comprises a handle and a swivel, a swivel is rotatably connected to the connecting sleeve, two handles are fixedly connected to the swivel, two guide grooves are provided on the swivel, one side of the connecting sleeve abuts with a cover plate, a connecting pipe is fixedly connected to the cover plate, two positioning blocks are fixedly connected to the cover plate, the positioning block is clamped with the connecting sleeve, a guide shaft is fixedly connected to the positioning block, the guide shaft extends to the inside of the guide groove and is slidably connected to the swivel, and a clamping structure is provided on the handle.

[0006] Preferably, the two positioning blocks are symmetrically distributed about the middle portion of the cover plate, and the two handles are symmetrically distributed about the middle portion of the rotating ring.

[0007] Preferably, the guide shaft and the positioning block are perpendicular to each other, and the handle and the rotating ring are perpendicular to each other.

[0008] Preferably, a sealing structure is provided on the cover plate, and the sealing structure includes a slip ring and a first spring. The cover plate is slidably connected to the inside with a slip ring, and one end of the slip ring is fixedly connected to a plurality of first springs, and the first springs are fixedly connected to the cover plate.

[0009] Preferably, a sealing gasket is clamped on the slip ring, and one end of the sealing gasket is in contact with the connecting sleeve.

[0010] Preferably, the locking structure includes an insertion rod and a second spring, the handle is slidably connected with the insertion rod, the connecting sleeve is provided with two slots, and one end of the insertion rod is engaged with an adjacent slot.

[0011] Preferably, a second spring is sleeved on the outside of the insertion rod, one end of the second spring abuts against the handle, and the other end of the second spring abuts against the insertion rod.

[0012] Preferably, the cross-section of one end of the insertion rod is a trapezoidal structure, and the cross-section of the other end of the insertion rod is a T-shaped structure.

[0013] Preferably, four supporting legs are fixedly connected to the bottom end of the cracking furnace body, and a control panel is provided on one side of the cracking furnace body.

[0014] The beneficial effect of the utility model is that when it is necessary to clean the inside of the furnace tube, the two handles can be held at the same time, so that the locking structure and the connecting sleeve are not locked, and then the swivel ring can be rotated by holding the handles, and the swivel ring drives the two guide grooves to move. When the guide shaft moves inside the guide groove, the two positioning blocks can slide inside the connecting sleeve, so that one side of the cover plate and the connecting sleeve do not conflict with each other. With the continuous movement of the guide shaft, it will move to the opening of the guide groove, and then it is only necessary to hold the cover plate and move the cover plate to remove the cover plate from one side of the connecting sleeve, thereby realizing the rapid disassembly of the cover plate, effectively shortening the disassembly time, and improving the convenience of operation. When the cover plate is removed, it will not block the inside of the furnace tube, and then the inside of the furnace tube can be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;

[0017] Figure 3 This is a schematic diagram of the connection structure between the support frame and the furnace tube of the utility model;

[0018] Figure 4 for Figure 3 An enlarged schematic diagram of part B is shown;

[0019] Figure 5 This is a schematic diagram of the connection structure between the handle and the insertion rod of the utility model;

[0020] Figure 6 It is a schematic diagram of the connection structure between the positioning block and the guide shaft of the utility model.

[0021] In the figure: 1, cracking furnace body; 2, support frame; 3, furnace tube; 4, connecting sleeve; 5, fixing structure; 501, handle; 502, swivel; 503, guide groove; 504, guide shaft; 505, positioning block; 6, sealing structure; 601, slip ring; 602, first spring; 603, sealing pad; 7, positioning structure; 701, plug rod; 702, second spring; 703, slot; 8, cover plate; 9, connecting pipe; 10, control panel; 11, supporting leg. 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] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a device for preparing vinyl chloride by cracking ethylene dichloride comprises a cracking furnace body 1, two supporting frames 2 are fixedly connected to both sides of the cracking furnace body 1, a connecting sleeve 4 is fixedly connected to the top of the supporting frame 2, a furnace tube 3 is fixedly connected between the two connecting sleeves 4, a fixing structure 5 is provided on the connecting sleeve 4, the fixing structure 5 comprises a handle 501 and a rotating ring 502, a rotating ring 502 is rotatably connected to the connecting sleeve 4, two handles 501 are fixedly connected to the rotating ring 502, two guide grooves 503 are provided on the rotating ring 502, a cover plate 8 is abutted on one side of the connecting sleeve 4, a connecting pipe 9 is fixedly connected to the cover plate 8, two positioning blocks 505 are fixedly connected to the cover plate 8, the positioning blocks 505 are engaged with the connecting sleeve 4, a guide shaft 504 is fixedly connected to the positioning blocks 505, the guide shaft 504 extends to the inside of the guide groove 503 and is slidably connected to the rotating ring 502, and a clamping structure 7 is provided on the handle 501.

[0024] As a technical optimization solution of the utility model, Figure 2 and Figure 6As shown, the two positioning blocks 505 are symmetrically distributed about the middle of the cover plate 8, and the two handles 501 are symmetrically distributed about the middle of the rotating ring 502. The guide shaft 504 is perpendicular to the positioning blocks 505, and the handles 501 are perpendicular to the rotating ring 502. Therefore, the movement direction of the cover plate 8 can be limited by the positioning blocks 505.

[0025] As a technical optimization solution of the utility model, Figure 4 As shown, the cover plate 8 is provided with a sealing structure 6, and the sealing structure 6 includes a slip ring 601 and a first spring 602. The cover plate 8 is slidably connected with the slip ring 601 inside, and one end of the slip ring 601 is fixedly connected with multiple first springs 602. The first spring 602 is fixedly connected to the cover plate 8. A sealing gasket 603 is clamped on the slip ring 601, and one end of the sealing gasket 603 is in contact with the connecting sleeve 4, so that the sealing between the cover plate 8 and the connecting sleeve 4 can be improved.

[0026] As a technical optimization solution of the utility model, Figure 1 and Figure 5 As shown, the locking structure 7 includes an insertion rod 701 and a second spring 702, the handle 501 is slidably connected with the insertion rod 701, and the connecting sleeve 4 is provided with two slots 703. One end of the insertion rod 701 is engaged with the adjacent slots 703, and the outer sleeve of the insertion rod 701 is provided with a second spring 702, one end of the second spring 702 is in contact with the handle 501, and the other end of the second spring 702 is in contact with the insertion rod 701. Therefore, when the insertion rod 701 is engaged with the slot 703, the rotation of the swivel 502 can be avoided, thereby effectively improving the stability of use.

[0027] As a technical optimization solution of the utility model, Figure 5 As shown, the cross section of one end of the insertion rod 701 is a trapezoidal structure, and the cross section of the other end of the insertion rod 701 is a T-shaped structure, so it can play a guiding role when the insertion rod 701 is engaged with the slot 703.

[0028] As a technical optimization solution of the utility model, Figure 1 As shown, four supporting legs 11 are fixedly connected to the bottom end of the cracking furnace body 1 , and a control panel 10 is provided on one side of the cracking furnace body 1 , so the cracking furnace body 1 can be supported by the supporting legs 11 .

[0029] When the utility model is used, firstly, the external pipeline is connected to the ends of the two connecting pipes 9 respectively. After the connection is completed, ethylene dichloride can enter the interior of the furnace tube 3 from one of the connecting pipes 9. The furnace tube 3 will be heated by the cracking furnace body 1. The high temperature will cause the ethylene dichloride to crack and produce vinyl chloride. The produced vinyl chloride will be discharged from the other connecting pipe 9. In the cracking process, coke will be produced and attached to the inner wall of the furnace tube 3. When the coke on the inner wall of the furnace tube 3 needs to be cleaned, the two handles 501 can be held at the same time, and then the insertion rod 701 can be pulled to insert the rod. When the end of the rod 701 is not engaged with the slot 703, the swivel 502 can be rotated by holding the handle 501, and the swivel 502 drives the two guide slots 503 to move. When the guide shaft 504 moves inside the guide slot 503, the two positioning blocks 505 slide inside the connecting sleeve 4, so that one side of the cover plate 8 does not conflict with the connecting sleeve 4. As the guide shaft 504 continues to move, it will move to the opening of the guide slot 503, and then you only need to hold the cover plate 8 and move it. The cover plate 8 can be removed from one side of the connecting sleeve 4, thereby realizing the quick disassembly of the cover plate 8, effectively shortening the disassembly time and improving the convenience of operation. When the cover plate 8 is removed, the interior of the furnace tube 3 will not be blocked, and then the interior of the furnace tube 3 can be cleaned. After the cleaning is completed, the cover plate 8 is taken to one side of the connecting sleeve 4, and the guide shaft 504 is located inside the guide groove 503, and then the rotating ring 502 is rotated in the opposite direction by holding the handle 501. During the movement of the guide shaft 504 inside the guide groove 503, the positioning block 50 5 will slide on the connecting sleeve 4, and the slip ring 601 will slide inside the cover plate 8, and the first spring 602 will contract. With the movement of the rotating ring 502, the end of the plug rod 701 will face the slot 703. At this time, the plug rod 701 will be engaged with the slot 703 under the action of the second spring 702, so that the rotating ring 502 cannot continue to rotate. At this time, one side of the cover plate 8 is in conflict with the connecting sleeve 4, and at the same time, the sealing gasket 603 is tightly pressed against the connecting sleeve 4 under the action of multiple first springs 602, thereby effectively improving the sealing between the cover plate 8 and the connecting sleeve 4.

[0030] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for preparing vinyl chloride by cracking ethylene dichloride, comprising a cracking furnace body (1), characterized in that: Two support frames (2) are fixedly connected to the two sides of the cracking furnace body (1); a connecting sleeve (4) is fixedly connected to the top of the supporting frame (2); a furnace tube (3) is fixedly connected between the two connecting sleeves (4); a fixing structure (5) is provided on the connecting sleeve (4); the fixing structure (5) comprises a handle (501) and a rotating ring (502); the connecting sleeve (4) is rotatably connected to the rotating ring (502); two handles (501) are fixedly connected to the rotating ring (502); the rotating ring (502) is provided with Two guide grooves (503), one side of the connecting sleeve (4) is in contact with a cover plate (8), a connecting pipe (9) is fixedly connected to the cover plate (8), two positioning blocks (505) are fixedly connected to the cover plate (8), the positioning blocks (505) are engaged with the connecting sleeve (4), a guide shaft (504) is fixedly connected to the positioning blocks (505), the guide shaft (504) extends to the inside of the guide groove (503) and is slidably connected to the rotating ring (502), and a locking structure (7) is provided on the handle (501).

2. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 1, characterized in that: The two positioning blocks (505) are symmetrically distributed about the middle of the cover plate (8), and the two handles (501) are symmetrically distributed about the middle of the rotating ring (502).

3. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 1, characterized in that: The guide shaft (504) and the positioning block (505) are perpendicular to each other, and the handle (501) and the rotating ring (502) are perpendicular to each other.

4. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 1, characterized in that: The cover plate (8) is provided with a sealing structure (6), the sealing structure (6) comprising a slip ring (601) and a first spring (602), the interior of the cover plate (8) is slidably connected to the slip ring (601), one end of the slip ring (601) is fixedly connected to a plurality of first springs (602), and the first springs (602) are fixedly connected to the cover plate (8).

5. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 4, characterized in that: A sealing gasket (603) is clamped on the slip ring (601), and one end of the sealing gasket (603) is in contact with the connecting sleeve (4).

6. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 1, characterized in that: The locking structure (7) comprises an insertion rod (701) and a second spring (702); the handle (501) is slidably connected with the insertion rod (701); the connecting sleeve (4) is provided with two slots (703); one end of the insertion rod (701) is engaged with an adjacent slot (703).

7. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 6, characterized in that: A second spring (702) is sleeved on the outside of the insertion rod (701), one end of the second spring (702) abuts against the handle (501), and the other end of the second spring (702) abuts against the insertion rod (701).

8. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 6, characterized in that: The cross-section of one end of the insertion rod (701) is a trapezoidal structure, and the cross-section of the other end of the insertion rod (701) is a T-shaped structure.

9. The device for preparing vinyl chloride by cracking ethylene dichloride according to claim 1, characterized in that: Four supporting legs (11) are fixedly connected to the bottom end of the cracking furnace body (1), and a control panel (10) is provided on one side of the cracking furnace body (1).

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