Novel horizontal reaction kettle main shaft sealing and self-lubricating internal seepage prevention device

Abstract

The utility model relates to the technical field of main shaft sealing of reaction kettles, in particular to a novel main shaft sealing and self-lubricating internal seepage prevention device of a horizontal reaction kettle, which is characterized in that a seal I and a seal II are arranged at two ends of a main shaft of a reaction kettle body and are connected with a high-pressure oil seal group; each of the seal I and the seal II comprises an external packing group arranged outside the reaction kettle body and a root oil seal group arranged inside the reaction kettle body, the high-pressure oil seal group comprises a high-pressure lubricating grease pump, and the circuit interlocking device comprises a fan connected with a motor on the reaction kettle body, a fan contactor and a fan power supply. And a time switch and a contactor are arranged between the high-pressure lubricating grease pump and the fan contactor. According to the utility model, the gap between the main shaft and the kettle body of the horizontal reaction kettle can be effectively sealed to prevent leakage of materials and high-pressure reaction gas; the interlocking automatic oiling device can automatically and quantitatively lubricate the sealing packing, and is matched with a novel sealing device to prevent grease from being pressed into the kettle body to contaminate materials.

Description

Technical Field

[0001] This utility model relates to the field of reactor main shaft sealing technology, specifically a novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device. Background Technology

[0002] Currently, most of the main shaft seals used in horizontal reactors are mechanical seals or packing seals. Mechanical seals have better performance but are expensive, while packing seals are cheaper but have poorer sealing performance. When adding lubricating grease using a high-pressure grease pump, the grease can seep into the reactor, seriously affecting the quality of the finished product, and the amount added cannot be accurately controlled. Based on this problem, we have studied a new type of main shaft seal for horizontal reactors and an interlocking lubrication and anti-internal seepage device. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device, which solves the problem of easy leakage of materials and high-pressure reaction gases inside the horizontal reactor due to improper sealing.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device, including a reactor body and a circuit interlocking device. Both ends of the main shaft of the reactor body are provided with a first seal and a second seal. The first seal and the second seal are both connected to a high-pressure oil seal group. The first seal and the second seal each include an external packing group located outside the reactor body and a root oil seal group located inside the reactor body. The high-pressure oil seal group includes a high-pressure grease pump. The circuit interlocking device includes a fan, a fan contactor, and a fan power supply connected to a motor on the reactor body. A time control switch and a contactor are provided between the high-pressure grease pump and the fan contactor.

[0005] As an optimization, the external packing assembly includes a sealing element cylinder and a sealing packing wrapped around the sealing element cylinder. The sealing element cylinder is provided with a sealing seat at one end near the reactor body and a packing sealing pressure plate at the other end away from the reactor body. Between the sealing seat and the sealing packing, there are sequentially provided an oil seal pressure plate, a first oil seal, two oil seals, and a second oil seal pressure plate.

[0006] As an optimization, the sealing packing is provided with an oil injection hole connected to the high-pressure grease pump.

[0007] As an optimization, the root oil seal assembly includes an internal oil seal seat and an internal oil seal gland disposed adjacent to the external packing assembly, and three oil seals are provided between the internal oil seal seat and the internal oil seal gland.

[0008] As an optimization, the number of turns of the sealing packing is 8-10.

[0009] The beneficial effects of this utility model are as follows: This utility model provides a novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device. Firstly, it effectively seals the gap between the horizontal reactor main shaft and the reactor body, preventing leakage of materials and high-pressure reaction gases. Secondly, the interlocked automatic lubrication device automatically and quantitatively lubricates the sealing packing, working in conjunction with the novel sealing device to prevent grease from being forced into the reactor body and contaminating materials. This device effectively ensures the airtightness of the reactor body's main shaft during rotation, preventing pressure leakage and ensuring the quality of the material reaction. The automatic interlocked lubrication system ensures continuous lubrication of the sealing packing; quantitative and timed lubrication reduces the amount of grease used and lowers the risk of grease seeping into the reactor body during high-pressure lubrication. The automatic interlocked lubrication system saves manpower, operates efficiently, and achieves automated, unmanned operation. The entire sealing device and automatic lubrication system are inexpensive to manufacture, easy to assemble, durable, and save on production costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the external packing assembly and root oil seal assembly of this utility model.

[0012] The components include: 1. Fan power supply, 2. Fan contactor, 3. Time control switch, 4. Contactor, 5. High-pressure grease pump, 6. Fan, 7. Motor, 8. Reducer, 9. Coupling, 10. Seal 1, 11. Reactor body, 12. Seal 2, 13. Packing gland seal plate, 14. Sealing packing, 15. Oil injection hole, 16. Seal cylinder, 17. Two oil seals, 18. One oil seal, 19. Seal seat, 20. Oil seal cover 2, 21. Oil seal cover 1, 22. Internal oil seal seat, 23. Internal oil seal cover, 24. Three oil seals. Detailed Implementation

[0013] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0014] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0015] For ease of description, the words "up," "down," "left," and "right" appearing in this utility model only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component 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.

[0016] like Figure 1-2 As shown, a novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device includes a reactor body 11 and a circuit interlocking device. Both ends of the main shaft of the reactor body 11 are provided with a first seal 10 and a second seal 12. The first seal 10 and the second seal 12 are both connected to a high-pressure oil seal assembly. The first seal 10 and the second seal 12 each include an external packing assembly located outside the reactor body 11 and a root oil seal assembly located inside the reactor body 11. The high-pressure oil seal assembly includes a high-pressure grease pump 5. The circuit interlocking device includes a fan 6, a fan contactor 2, and a fan power supply 1 connected to a motor on the reactor body 11. A time control switch 3 and a contactor 4 are provided between the high-pressure grease pump 5 and the fan contactor 2. The circuit interlocking device connects the power supply of the high-pressure grease pump motor to the power supply of the fan motor of the reactor main shaft motor, and connects it to the output port of the fan contactor 2 of the cooling fan motor. It starts at the same time as the fan 6. When the reactor body 11 starts, the high-pressure grease pump 5 controls the contactor 4 to open and close the power supply through the time control switch 3 to achieve timed and quantitative lubrication of the sealing packing 14.

[0017] The external packing assembly includes a sealing cylinder 16 and a sealing packing 14 wound around the sealing cylinder 16. A sealing seat 19 is provided at one end of the sealing cylinder 16 near the reactor body 11, and a packing sealing pressure plate 13 is provided at the other end away from the reactor body 11. An oil seal pressure plate 21, a first oil seal 18, two oil seals 17 and a second oil seal pressure plate 20 are arranged sequentially between the sealing seat 19 and the sealing packing 14.

[0018] The sealing packing 14 is provided with an oil injection hole 15 connected to the high-pressure grease pump 5. The oil injection hole 15 is located at the innermost part, so that the grease is pressed into the friction surface between the shaft and the packing from the inside out, thereby achieving the effect of cooling and lubrication.

[0019] The root oil seal assembly includes an internal oil seal seat 22 and an internal oil seal cap 23 disposed adjacent to the external packing assembly, and three oil seals 24 are provided between the internal oil seal seat 22 and the internal oil seal cap 23.

[0020] The external packing assembly is responsible for preventing grease from seeping into the interior. At the same time, it works in conjunction with the root oil seal assembly as the first line of defense against the internal pressure of the reactor body 11. The external packing assembly with the extended sealing section plays a secondary sealing role after being tightened by the outer packing sealing pressure plate 13.

[0021] The sealing packing 14 has 8-10 turns.

[0022] The high-pressure grease pump 5 should ideally be positioned between seal 10 and seal 22 to ensure that the oil supply lines on both sides are of equal length. Even if the high-pressure grease pump 5 is not placed in the middle, the lengths of the two oil pipes must still be ensured to be equal when connecting them. Even if a pressure relief valve is installed at the outlet of the high-pressure grease pump 5, it cannot guarantee that the output from both ends will be the same. Therefore, the output error will be minimized for the same delivery distance. High-pressure oil pipes should preferably be made of copper or stainless steel to ensure the cleanliness of the grease. The timer switch 3 is generally set to add grease every half hour, with each addition lasting five minutes.

[0023] The automatic grease filling device is interlocked with the power starting device of the reactor body 11. The time control switch 3 sets the cycle time of the grease filling, and the contactor 4 is powered to control the motor to achieve automatic and accurate filling at a time and in a quantitative manner. This prevents the packing from burning out due to friction between the packing and the shaft, and at the same time, it plays a lubricating role and reduces the resistance of the shaft when it rotates.

[0024] For equipment with high rotation speed, when the heat generated by the seal during operation is large, the sealing shell can be designed as a sandwich structure, with circulating water for cooling. The circulating water inlet is designed at the bottom of the shell, and the outlet is designed at the top of the shell, i.e., a low-inlet, high-outlet design.

[0025] The above-described specific embodiments are merely specific examples of this utility model. The patent protection scope of this utility model includes, but is not limited to, the product form and style of the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of this utility model should fall within the patent protection scope of this utility model.

Claims

1. A novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device, comprising a reactor body and an electrical interlocking device, characterized in that: Both ends of the main shaft of the reactor body are provided with a first seal and a second seal. Both the first seal and the second seal are connected to a high-pressure oil seal assembly. Both the first seal and the second seal include an external packing assembly located outside the reactor body and a root oil seal assembly located inside the reactor body. The high-pressure oil seal assembly includes a high-pressure grease pump. The circuit interlocking device includes a fan, a fan contactor, and a fan power supply connected to a motor on the reactor body. A time control switch and a contactor are provided between the high-pressure grease pump and the fan contactor.

2. The novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device according to claim 1, characterized in that: The external packing assembly includes a sealing element cylinder and a sealing packing wrapped around the sealing element cylinder. A sealing seat is provided at one end of the sealing element cylinder near the reactor body, and a packing sealing pressure plate is provided at the other end away from the reactor body. Between the sealing seat and the sealing packing, there are sequentially arranged oil seal pressure cap one, one oil seal, two oil seals and oil seal pressure cap two.

3. The novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device according to claim 2, characterized in that: The sealing packing is provided with an oil injection hole that is connected to the high-pressure grease pump.

4. The novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device according to claim 1, characterized in that: The root oil seal assembly includes an internal oil seal seat and an internal oil seal cap disposed adjacent to the external packing assembly, and three oil seals are provided between the internal oil seal seat and the internal oil seal cap.

5. The novel horizontal reactor main shaft sealing and automatic lubrication anti-internal leakage device according to claim 3, characterized in that: The sealing packing is wound 8-10 times.

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