Raw material storage tank for preparing diethylene glycol monovinyl ether

Abstract

The utility model relates to the technical field of chemical raw material storage, and particularly discloses a raw material storage tank for preparing diethylene glycol monovinyl ether, which comprises a tank body, a feed pipe arranged on the upper end face of the tank body, a discharge port arranged at the lower end of the tank body and provided with an electromagnetic valve on the outer wall, and a sealing mechanism arranged on the outer wall of the feed pipe. The sealing mechanism comprises a sleeve fixedly connected to the upper end face of the tank body and located on the outer side of the feeding pipe, a sliding ring is slidably connected between the feeding pipe and the sleeve, the outer wall of the feeding pipe is sleeved with a first spring located on the lower side of the sliding ring, and the outer wall of the sleeve is in threaded connection with a sealing cover. The lower end face of the sealing cover is fixedly connected with a sealing ring extending to the position between the feeding pipe and the sleeve, the lower end of the sealing ring is fixedly connected with a first sealing ring, efficient sealing of volatile raw materials is achieved through the synergistic effect of radial sealing and axial sealing in cooperation with an elastic pre-tightening mechanism, and raw material steam leakage and external impurity invasion are effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of chemical raw material storage technology, and specifically discloses a raw material storage tank for the preparation of diethylene glycol monovinyl ether. Background Technology

[0002] Diethylene glycol monovinyl ether is an important chemical raw material widely used in coatings, adhesives, and resin synthesis. Its preparation requires the storage of various raw materials, such as diethylene glycol and vinyl ether precursors. These raw materials typically exhibit volatility, flammability, or moisture sensitivity, necessitating stringent storage conditions.

[0003] Traditional storage tanks suffer from problems such as insufficient sealing and inaccurate temperature control, which can easily lead to raw material deterioration and volatilization loss. Therefore, a raw material storage tank for the preparation of diethylene glycol monovinyl ether is needed to solve this problem. Summary of the Invention

[0004] This invention proposes a raw material storage tank for the preparation of diethylene glycol monovinyl ether. Through a multi-stage dynamic sealing structure and circulating water coil, the storage safety and stability of volatile raw materials such as diethylene glycol monovinyl ether are significantly improved.

[0005] This utility model is implemented as follows: a raw material storage tank for the preparation of diethylene glycol monovinyl ether includes a tank body, an inlet pipe on the upper end face of the tank body, and an outlet with a solenoid valve installed on the outer wall of the lower end of the tank body. A sealing mechanism is provided on the outer wall of the inlet pipe. The sealing mechanism includes a sleeve fixedly connected to the upper end face of the tank body and located outside the inlet pipe. A slip ring is slidably connected between the inlet pipe and the sleeve. A first spring located below the slip ring is sleeved on the outer wall of the inlet pipe. A sealing cap is threadedly connected to the outer wall of the sleeve. A sealing ring extending between the inlet pipe and the sleeve is fixedly connected to the lower end face of the sealing cap. A first sealing ring is fixedly connected to the lower end of the sealing ring. A pressure plate is slidably connected to the inner wall of the sealing ring. A sealing gasket abutting against the upper end of the inlet pipe is fixedly connected to the lower end face of the pressure plate. A second spring is fixedly connected between the lower end face of the sealing cap and the pressure plate.

[0006] As a preferred embodiment of the raw material storage tank for the preparation of diethylene glycol monovinyl ether according to this utility model, a second sealing ring is fixedly connected to both the outer wall of the feed pipe and the inner wall of the sleeve.

[0007] As a preferred embodiment of the raw material storage tank for the preparation of diethylene glycol monovinyl ether according to this utility model, the inner wall of the sleeve is provided with a plurality of first sliding grooves, the outer wall of the slip ring is fixedly connected with a plurality of first sliding blocks that match the first sliding grooves, the inner wall of the sealing ring is provided with a plurality of second sliding grooves, and the outer wall of the pressure plate is fixedly connected with a plurality of second sliding blocks that match the second sliding grooves.

[0008] As a preferred embodiment of the raw material storage tank for the preparation of diethylene glycol monovinyl ether according to this utility model, the tank body includes an inner layer and an outer layer, and an insulation layer is provided between the inner layer and the outer layer. The inner layer is made of stainless steel, the outer layer is made of carbon steel, and the insulation layer is made of polyurethane foam.

[0009] As a preferred embodiment of the raw material storage tank for the preparation of diethylene glycol monovinyl ether according to this utility model, the upper end of the tank body is provided with a nitrogen inlet.

[0010] As a preferred embodiment of the raw material storage tank for the preparation of diethylene glycol monovinyl ether according to this utility model, the tank body is provided with a circulating water coil.

[0011] As a preferred embodiment of the raw material storage tank for the preparation of diethylene glycol monovinyl ether according to this utility model, a temperature sensor is provided inside the tank.

[0012] The beneficial effects of this utility model are:

[0013] 1. Through the synergistic effect of radial and axial sealing, combined with an elastic pre-tightening mechanism, efficient sealing of volatile raw materials is achieved, effectively preventing raw material vapor leakage and the intrusion of external impurities.

[0014] 2. By combining the insulation structure and the circulating temperature control device, the temperature inside the tank is kept stable. At the same time, the inert gas protection technology is used to prevent the oxidation of raw materials, which significantly improves the stability and safety of raw material storage. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of a raw material storage tank for the preparation of diethylene glycol monovinyl ether according to this utility model;

[0016] Figure 2 This is a front sectional view of a raw material storage tank for the preparation of diethylene glycol monovinyl ether according to the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Tank body; 101. Inner layer; 102. Outer layer; 103. Insulation layer; 2. Feed pipe; 201. Sleeve; 3. Discharge port; 4. Sealing cap; 5. Slip ring; 6. First spring; 7. Sealing ring; 8. First sealing ring; 9. Second sealing ring; 10. Pressure plate; 11. Sealing gasket; 12. Second spring; 13. First slide groove; 14. Second slide groove; 15. Nitrogen inlet; 16. Circulating water coil; 17. Temperature sensor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0020] Please see Figure 1-3 A raw material storage tank for the preparation of diethylene glycol monovinyl ether includes a tank body 1, an inlet pipe 2 on the upper end of the tank body 1, and an outlet 3 with a solenoid valve installed on the outer wall of the lower end of the tank body 1. The outer wall of the inlet pipe 2 is provided with a sealing mechanism, which includes a sleeve 201 fixedly connected to the upper end of the tank body 1 and located outside the inlet pipe 2. A slip ring 5 is slidably connected between the inlet pipe 2 and the sleeve 201. A first spring 6 located below the slip ring 5 is sleeved on the outer wall of the inlet pipe 2. A sealing cap 4 is threadedly connected to the outer wall of the sleeve 201. A sealing ring 7 extending between the inlet pipe 2 and the sleeve 201 is fixedly connected to the lower end of the sealing cap 4. A first sealing ring 8 is fixedly connected to the lower end of the sealing ring 7. A pressure plate 10 is slidably connected to the inner wall of the sealing ring 7. A sealing gasket 11 abutting against the upper end of the inlet pipe 2 is fixedly connected to the lower end of the pressure plate 10. A second spring 12 is fixedly connected between the lower end of the sealing cap 4 and the pressure plate 10.

[0021] In this embodiment: when the sealing cap 4 is tightened, the sealing ring 7 moves down with the sealing cap 4, and the first sealing ring 8 at its bottom is tightly pressed against the upper end face of the slip ring 5 to form a radial sealing interface. The slip ring 5 is pushed upward by the preload of the first spring 6, further strengthening the contact pressure of the first sealing ring 8, ensuring that the annular gap between the feed pipe 2 and the sleeve 201 is completely closed. During the pressing down of the sealing cap 4, the pressure plate 10, under the elastic force of the second spring 12, pushes the sealing gasket 11 to fit tightly against the upper opening edge of the feed pipe 2 to form an axial end face seal. This design can block the path of raw material vapor to escape upward through the feed pipe 2, and is especially suitable for volatile raw materials such as diethylene glycol monovinyl ether.

[0022] As a technical optimization of this utility model, the outer wall of the feed pipe 2 and the inner wall of the sleeve 201 are both fixedly connected with a second sealing ring 9.

[0023] In this embodiment, by fixing the second sealing ring 9 to both the outer wall of the feed pipe 2 and the inner wall of the sleeve 201, the sealing performance between the sealing ring 7 and the feed pipe 2 and the sleeve 201 is further maintained, ensuring the reliability and durability of the sealing mechanism.

[0024] As a technical optimization of this utility model, the inner wall of the sleeve 201 is provided with a plurality of first sliding grooves 13, the outer wall of the slip ring 5 is fixedly connected with a plurality of first sliders that match the first sliding grooves 13, the inner wall of the sealing ring 7 is provided with a plurality of second sliding grooves 14, and the outer wall of the pressure plate 10 is fixedly connected with a plurality of second sliders that match the second sliding grooves 14.

[0025] In this embodiment: the first slide groove 13 and the first slider facilitate the limiting of the slip ring 5 to prevent the slip ring 5 from rotating with the sealing ring 7; the second slide groove 14 and the second slider facilitate the limiting of the pressure plate 10 to prevent the pressure plate 10 from rotating with the sealing cover 4.

[0026] As a technical optimization of this utility model, the tank body 1 includes an inner layer 101 and an outer layer 102, with a heat insulation layer 103 provided between the inner layer 101 and the outer layer 102. The inner layer 101 is made of stainless steel, the outer layer 102 is made of carbon steel, and the heat insulation layer 103 is made of polyurethane foam.

[0027] In this embodiment: by filling polyurethane foam between the inner layer 101 and the outer layer 102, a heat insulation layer 103 is formed, which facilitates maintaining a constant internal temperature of the tank 1.

[0028] As a technical optimization of this utility model, a nitrogen inlet 15 is provided at the upper end of the tank body 1.

[0029] In this embodiment, the upper end of the nitrogen inlet 15 is connected to an external nitrogen generator via a flange. The nitrogen gas replaces the air inside the tank 1, reducing the oxygen content inside the tank and preventing the raw materials from oxidizing.

[0030] As a technical optimization of this utility model, a circulating water coil 16 is provided inside the tank body 1.

[0031] In this embodiment, the two ends of the circulating water coil 16 are respectively connected to an external circulating temperature control device, which can adjust the internal temperature of the tank 1 to a set range.

[0032] As a technical optimization of this utility model, a temperature sensor 17 is installed inside the tank body 1.

[0033] In this embodiment, the temperature sensor 17 facilitates real-time monitoring of the temperature inside the tank 1.

[0034] The working principle and usage process of this utility model are as follows: In use, the raw material is first introduced into the tank 1 through the feed pipe 2, and then nitrogen is introduced into the tank 1 through the nitrogen inlet 15. The air inside the tank 1 is discharged through the feed pipe 2. The nitrogen replaces the air inside the tank 1, reducing the oxygen content inside the tank and preventing the raw material from oxidizing. Then, the sealing cap 4 is tightened on the outer wall of the sleeve 201. When the sealing cap 4 is tightened, the sealing ring 7 moves down with the sealing cap 4. The first sealing ring 8 at its bottom is tightly pressed against the upper end face of the slip ring 5 to form a radial sealing interface. The slip ring 5 is pushed upward by the preload force of the first spring 6, further strengthening the contact pressure of the first sealing ring 8, ensuring that the annular gap between the feed pipe 2 and the sleeve 201 is completely closed. During the pressing down of the sealing cap 4, the pressure plate 10, under the elastic force of the second spring 12, pushes the sealing gasket 11 to fit tightly against the upper opening edge of the feed pipe 2 to form an axial end face seal. This design can block the path of raw material vapor escaping upward through feed pipe 2, and is especially suitable for volatile raw materials such as diethylene glycol monovinyl ether.

[0035] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A raw material storage tank for the preparation of diethylene glycol monovinyl ether, comprising a tank body (1), wherein the upper end face of the tank body (1) has a feed pipe (2), and the lower end of the tank body (1) is provided with a discharge port (3) on the outer wall of which a solenoid valve is installed, characterized in that: The outer wall of the feed pipe (2) is provided with a sealing mechanism; The sealing mechanism includes a sleeve (201) fixedly connected to the upper end face of the tank body (1) and located outside the feed pipe (2). A slip ring (5) is slidably connected between the feed pipe (2) and the sleeve (201). A first spring (6) located below the slip ring (5) is sleeved on the outer wall of the feed pipe (2). A sealing cap (4) is threadedly connected to the outer wall of the sleeve (201). A sealing ring (7) extending between the feed pipe (2) and the sleeve (201) is fixedly connected to the lower end face of the sealing cap (4). A first sealing ring (8) is fixedly connected to the lower end of the sealing ring (7). A pressure plate (10) is slidably connected to the inner wall of the sealing ring (7). A sealing gasket (11) abutting against the upper end of the feed pipe (2) is fixedly connected to the lower end face of the pressure plate (10). A second spring (12) is fixedly connected between the lower end face of the sealing cap (4) and the pressure plate (10).

2. The raw material storage tank for the preparation of diethylene glycol monovinyl ether according to claim 1, characterized in that: The outer wall of the feed pipe (2) and the inner wall of the sleeve (201) are both fixedly connected with a second sealing ring (9).

3. The raw material storage tank for the preparation of diethylene glycol monovinyl ether according to claim 1, characterized in that: The inner wall of the sleeve (201) is provided with a plurality of first sliding grooves (13), and the outer wall of the slip ring (5) is fixedly connected with a plurality of first sliding blocks that match the first sliding grooves (13). The inner wall of the sealing ring (7) is provided with a plurality of second sliding grooves (14), and the outer wall of the pressure plate (10) is fixedly connected with a plurality of second sliding blocks that match the second sliding grooves (14).

4. The raw material storage tank for the preparation of diethylene glycol monovinyl ether according to claim 1, characterized in that: The tank (1) includes an inner layer (101) and an outer layer (102), and an insulation layer (103) is provided between the inner layer (101) and the outer layer (102). The inner layer (101) is stainless steel, the outer layer (102) is carbon steel, and the insulation layer (103) is polyurethane foam.

5. The raw material storage tank for the preparation of diethylene glycol monovinyl ether according to claim 1, characterized in that: The upper end of the tank (1) is provided with a nitrogen inlet (15).

6. The raw material storage tank for the preparation of diethylene glycol monovinyl ether according to claim 1, characterized in that: The tank (1) is equipped with a circulating water coil (16).

7. The raw material storage tank for the preparation of diethylene glycol monovinyl ether according to claim 1, characterized in that: A temperature sensor (17) is installed inside the tank (1).

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