Leak-proof crystallization kettle

Abstract

The utility model relates to the field of crystallization kettles, in particular to an anti-leakage crystallization kettle. The reaction kettle comprises a kettle body, a feeding pipe, a sealing assembly and a fixing assembly, a kettle opening is formed in the upper end of the kettle body. And the feeding pipe is butted with the kettle opening. The sealing assemblies are arranged on the kettle opening and the feeding pipe respectively, the first spring pushes the first sealing ring to block the two sides of the upper end of the kettle opening, and the joint of the kettle opening and the feeding pipe is sealed. The fixing assembly is arranged at the upper end of the kettle body, abuts against the upper end of the connecting ring through the abutting pad and is clamped into the inserting groove, and therefore the feeding pipe is fixed. The kettle opening is inserted into the butt joint groove formed in the lower end of the feeding pipe, the first spring pushes the first sealing ring to abut against the upper end of the kettle opening, the protruding ring is clamped into the first clamping groove, and meanwhile the second sealing rings are clamped into the corresponding second clamping grooves one by one. And the joint of the kettle opening and the feeding pipe can be sealed. On one hand, material leakage can be avoided, and material loss is reduced; on the other hand, external impurities can be effectively prevented from invading, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of crystallization kettles, in particular to a leakage-proof crystallization kettle. Background Art

[0002] Pyromellitic dianhydride, abbreviated as pyromellitic anhydride, is an important chemical raw material, mainly used for synthesizing high molecular materials such as polyimide. In the production process of pyromellitic dianhydride, a crystallization kettle is usually required. The crystallization kettle is a device used for mixing and reacting materials and then rapidly cooling through chilled water or refrigerant water in the interlayer to achieve crystallization.

[0003] The Chinese patent document with the authorization announcement number CN216023254U proposes a crystallization kettle for the production of pyromellitic dianhydride, including a kettle body. A kettle mouth is communicated with the upper side wall of the kettle body. A feed pipe is arranged in the kettle mouth. A sealing mechanism is jointly arranged on the side wall of the kettle mouth and the feed pipe. The sealing mechanism includes a fixed box fixedly connected to the side wall of the kettle mouth. A piston plate is hermetically slidably connected to the inner wall of the fixed box. A connecting rod is fixedly connected to the upper side wall of the piston plate. A pressing plate is fixedly connected to the upper end of the connecting rod. A placement groove is arranged on the inner wall of the kettle mouth.

[0004] In the above application, although the airbag expands and extends into the sealing groove to achieve the sealing of the connection between the feed pipe and the kettle mouth. However, the airbag may be damaged after a long time, resulting in the loss of the sealing performance of the device. Therefore, the effect of using the airbag for sealing is not ideal. Summary of the Utility Model

[0005] Aiming at the problems in the background art, a leakage-proof crystallization kettle is proposed.

[0006] The utility model proposes a leakage-proof crystallization kettle, including a kettle body, a feed pipe, a sealing component and a fixing component. The upper end of the kettle body is provided with a kettle mouth. The feed pipe is docked with the kettle mouth. The sealing components are respectively arranged on the kettle mouth and the feed pipe. By pushing a sealing ring with a first spring, the two sides of the upper end of the kettle mouth are blocked, and the connection between the kettle mouth and the feed pipe is sealed. The fixing component is arranged at the upper end of the kettle body. By pressing a pressing pad against the upper end of the connecting ring and clamping it into the insertion slot, the feed pipe is fixed.

[0007] Preferably, a docking groove matching the kettle mouth is opened at the lower end of the sealing component; a first spring is connected to the top end of the docking groove; a first sealing ring for sealing the top end of the kettle mouth is connected to the lower end of the first spring.

[0008] Preferably, a convex ring is arranged at the upper end of the kettle mouth; a first clamping groove matching the convex ring is opened at the lower end of the first sealing ring.

[0009] Preferably, a second sealing ring is arranged at the side wall of the kettle mouth; a second clamping groove matching the second sealing ring is communicated with the groove wall of the docking groove.

[0010] Preferably, the second sealing ring is provided on both the inner wall and the outer wall of the kettle opening, and the corresponding second clamping groove is also provided on both sides of the docking groove.

[0011] Preferably, multiple groups of fixing components are arranged in an annular array with respect to the feed pipe.

[0012] Preferably, a connecting ring is provided at the lower end of the outer side wall of the feed pipe; the fixing component includes a sliding groove opened at the upper end of the kettle body; a sliding frame is slidably connected in the sliding groove; a sleeve is provided at one end of the sliding frame close to the feed pipe; a threaded groove is provided in the sleeve, and a threaded rod is threadedly connected through the threaded groove; the upper end of the threaded rod is connected with a knob, and the lower end is connected with a pressing pad; the pressing pad is in fit connection with a slot opened at the upper end of the connecting ring.

[0013] Preferably, a fixing rod is provided at one end of the sliding groove away from the feed pipe; a second spring is connected between the fixing rod and the sliding frame.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] (1) For this leakage-proof crystallization kettle, by inserting the kettle opening into the docking groove opened at the lower end of the feed pipe, the first spring is pushed to make the first sealing ring abut against the upper end of the kettle opening, and the convex ring is snapped into the first clamping groove. At the same time, the second sealing ring will be respectively snapped into the corresponding second clamping grooves. The connection between the kettle opening and the feed pipe can be sealed. On the one hand, it can avoid material leakage and reduce material loss; on the other hand, it can effectively prevent external impurities from invading and ensure product quality.

[0016] (2) For this leakage-proof crystallization kettle, by turning the knob, the threaded rod moves downward along the threaded groove opened in the sleeve, and finally the pressing pad is inserted into the slot to fix the feed pipe. It can prevent the connection between the kettle opening and the feed pipe from loosening due to external force on the feed pipe, so that the crystallization kettle loses its sealing performance and causes internal material leakage. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 is a schematic diagram of the structure of the sealing component of the utility model;

[0019] Figure 3 is the utility model Figure 1 is a schematic diagram of the structure of the fixing component at A in the utility model.

[0020] Reference numerals: 1, kettle body; 2, kettle opening; 3, feed pipe; 301, connecting ring; 4, sealing assembly; 41, docking groove; 42, first spring; 43, first sealing ring; 44, convex ring; 45, first clamping groove; 46, second sealing ring; 47, second clamping groove; 5, fixing assembly; 51, sliding groove; 52, fixing rod; 53, second spring; 54, sliding bracket; 55, connecting ring; 56, threaded rod; 57, knob; 58, pressing pad; 59, slot. Detailed implementation manners

[0021] Embodiment 1

[0022] As Figure 1-2 shown, a leakage-proof crystallization kettle proposed by the present utility model includes a kettle body 1, a feed pipe 3, a sealing assembly 4 and a fixing assembly 5. A kettle opening 2 is provided at the upper end of the kettle body 1. The feed pipe 3 is docked with the kettle opening 2. The sealing assembly 4 is respectively arranged on the kettle opening 2 and the feed pipe 3. The first sealing ring 43 is pushed by the first spring 42 to seal both sides of the upper end of the kettle opening 2, sealing the connection between the kettle opening 2 and the feed pipe 3. The fixing assembly 5 is arranged at the upper end of the kettle body 1, presses against the upper end of the connecting ring 301 through the pressing pad 58, and is clamped into the slot 59, thereby fixing the feed pipe 3.

[0023] Further explanation, a docking groove 41 matching the kettle opening 2 is opened at the lower end of the sealing assembly 4; a first spring 42 is connected to the top of the docking groove 41; the lower end of the first spring 42 is connected to a first sealing ring 43 for sealing the top of the kettle opening 2. By pushing the first sealing ring 43 with the first spring 42 to block the upper end of the kettle opening 2, the connection between the kettle opening 2 and the feed pipe 3 can be sealed. On the one hand, it can avoid material leakage and reduce material loss; on the other hand, it can effectively prevent external impurities from invading and ensure product quality.

[0024] Further explanation, a convex ring 44 is provided at the upper end of the kettle opening 2; a first clamping groove 45 matching the convex ring 44 is opened at the lower end of the first sealing ring 43. The sealing range of the first sealing ring 43 can be expanded, and the sealing effect can be improved.

[0025] Further explanation, a second sealing ring 46 is provided on the side wall of the kettle opening 2; a second clamping groove 47 matching the second sealing ring 46 is communicated with the groove wall of the docking groove 41. The second sealing ring 46 is arranged on both the inner wall and the outer wall of the kettle opening 2, and the corresponding second clamping grooves 47 are also arranged on both sides of the docking groove 41. The sealing performance of the crystallization kettle can be further improved.

[0026] Embodiment 2

[0027] As Figure 3 shown, a leakage-proof crystallization kettle proposed by the present utility model, compared with Embodiment 1, this embodiment further includes: multiple groups of fixing assemblies 5 are arranged in a circular array with respect to the feed pipe 3. The feed pipe 3 can be fixed more firmly.

[0028] Further explanation, the lower end of the outer wall of the feed pipe 3 is provided with a connecting ring 301; the fixing assembly 5 includes a slide groove 51 opened at the upper end of the kettle body 1; a sliding frame 54 is slidably connected in the slide groove 51; a sleeve 55 is provided at one end of the sliding frame 54 close to the feed pipe 3; a thread groove is provided in the sleeve 55, and a threaded rod 56 is threadedly connected through the thread groove; a knob 57 is connected to the upper end of the threaded rod 56, and a pressure pad 58 is connected to the lower end; the pressure pad 58 is engaged with a slot 59 opened at the upper end of the connecting ring 301. The feed pipe 3 can be fixed to prevent the feed pipe 3 from being subjected to external force and causing the connection between the kettle mouth 2 and the feed pipe 3 to loosen, thereby causing the crystallization kettle to lose its sealing performance and cause leakage of internal materials.

[0029] Further explanation, a fixing rod 52 is provided at one end of the chute 51 away from the feed pipe 3; a spring 2 53 is connected between the fixing rod 52 and the sliding frame 54. The sliding frame 54 can be pushed to slide to the end of the chute 51 close to the feed pipe 3 to prevent the sliding frame 54 from sliding back and forth.

[0030] The working principle of the utility model is as follows: when working, first insert the kettle mouth 2 into the docking groove 41 opened at the lower end of the feed pipe 3, so that the spring 1 42 pushes the sealing ring 1 43 to abut against the upper end of the kettle mouth 2, and the convex ring 44 is snapped into the snap groove 1 45. At the same time, the sealing rings 2 46 will snap into the corresponding snap grooves 2 47 one by one to seal the connection between the kettle mouth 2 and the feed pipe 3. Then turn the knob 57 to move the threaded rod 56 downward along the threaded groove opened in the sleeve 55, and finally insert the pressure pad 58 into the slot 59 to fix the feed pipe 3, so as to prevent the feed pipe 3 from being subjected to external force and causing the connection between the kettle mouth 2 and the feed pipe 3 to loosen.

[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A leak-proof crystallization kettle, characterized in that: include A kettle body (1); a kettle mouth (2) is provided at the upper end of the kettle body (1); A feed pipe (3) connected to the kettle port (2); A sealing assembly (4) is respectively arranged on the kettle opening (2) and the feed pipe (3), and seals the connection between the kettle opening (2) and the feed pipe (3) by pushing a sealing ring (43) through a spring (42) to seal both sides of the upper end of the kettle opening (2); And a fixing component (5) is arranged at the upper end of the kettle body (1), pressed against the upper end of the connecting ring (301) through a pressing pad (58), and snapped into the slot (59), thereby fixing the feed pipe (3).

2. A leak-proof crystallization kettle according to claim 1, characterized in that: The lower end of the sealing component (4) is provided with a docking groove (41) that matches the kettle mouth (2); the top end of the docking groove (41) is connected to a spring (42); the lower end of the spring (42) is connected to a sealing ring (43) that seals the top end of the kettle mouth (2).

3. A leakage-proof crystallization kettle according to claim 2, characterized in that: A convex ring (44) is provided at the upper end of the kettle mouth (2); and a clamping groove (45) matching with the convex ring (44) is provided at the lower end of the sealing ring (43).

4. The anti-leakage crystallization kettle according to claim 2, characterized in that: A second sealing ring (46) is provided on the side wall of the kettle mouth (2); and a second clamping groove (47) matching with the second sealing ring (46) is communicated with the groove wall of the docking groove (41).

5. The anti-leakage crystallization kettle according to claim 4, characterized in that: The second sealing ring (46) is arranged on the inner wall and the outer wall of the kettle mouth (2), and the corresponding second clamping groove (47) is also arranged on both sides of the docking groove (41).

6. The anti-leakage crystallization kettle according to claim 1, characterized in that: A plurality of fixed components (5) are arranged in a circular array with respect to the feed pipe (3).

7. The anti-leakage crystallization kettle according to claim 6, characterized in that: A connecting ring (301) is provided at the lower end of the outer wall of the feed pipe (3); the fixing assembly (5) comprises a slide groove (51) provided at the upper end of the kettle body (1); a sliding frame (54) is slidably connected in the slide groove (51); a sleeve (55) is provided at one end of the sliding frame (54) close to the feed pipe (3); a thread groove is provided in the sleeve (55), and a threaded rod (56) is threadedly connected through the thread groove; a knob (57) is connected at the upper end of the threaded rod (56), and a pressure pad (58) is connected at the lower end; the pressure pad (58) is engaged and snap-fitted with a slot (59) provided at the upper end of the connecting ring (301).

8. The anti-leakage crystallization kettle according to claim 7, characterized in that: A fixing rod (52) is provided at one end of the slide groove (51) away from the feed pipe (3); a second spring (53) is connected between the fixing rod (52) and the sliding frame (54).

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