Fan mechanical seal air leakage recovery device

Abstract

The utility model belongs to the technical field of air leakage recovery, and particularly relates to a fan mechanical seal air leakage recovery device which comprises a main fan and a heating furnace, the output end of the main fan is connected with the heating furnace through a pipeline, the outer side of the heating furnace is connected with a second connecting pipe, and the end, away from the heating furnace, of the second connecting pipe is connected with a recovery conveying fan. The output end of the recycling and conveying fan is connected with the second connecting pipe, the input end of the recycling and conveying fan is connected with a first connecting pipe, a collecting piece is installed at the top of the main fan, the end, away from the recycling and conveying fan, of the first connecting pipe is connected with the collecting piece, the collecting piece is a collecting box, and the collecting box is arranged at the top of the main fan. And the collecting box is connected with the first connecting pipe. According to the utility model, leaked coal gas can be effectively collected and recycled, so that environmental pollution and potential safety hazards caused by coal gas leakage into the atmosphere are avoided, meanwhile, the energy loss and the maintenance frequency of the fan are reduced, and the maintenance cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air leakage recovery, and in particular relates to an air leakage recovery device for a fan seal. Background Art

[0002] The fan seal is an important part of the fan. Its function is to prevent gas from leaking from the inside of the fan to the outside and ensure the normal operation and safety of the fan. However, there are some problems with the current fan seal, mainly in the following aspects:

[0003] Existing fan seals often leak frequently due to large fluctuations in gas pressure from upstream and a large amount of light sulfur carried by the gas, resulting in frequent maintenance and high maintenance costs.

[0004] Leaked coal gas not only pollutes the environment, but also poses certain safety hazards. The main components of coal gas are CO, hydrogen, alkanes, olefins, aromatics, etc. If coal gas leaks and is released into the air, it will pollute the air. At the very least, it will affect the air quality and increase the greenhouse effect. At worst, it will cause people to suffer from gas poisoning.

[0005] Moreover, the leaked gas is also a kind of energy loss, which reduces the efficiency and economy of the fan;

[0006] Therefore, how to effectively prevent and reduce fan seal leakage and improve the operating performance and safety of the fan is a technical problem that needs to be solved urgently. Utility Model Content

[0007] The utility model aims to provide a fan seal leakage recovery device, which can effectively collect and recycle leaked gas, thereby preventing gas leakage into the atmosphere from causing environmental pollution and safety hazards, while reducing energy loss and the maintenance frequency of the fan, saving maintenance costs.

[0008] The technical solution adopted by the utility model is as follows:

[0009] A fan seal leakage gas recovery device comprises a main fan and a heating furnace, wherein the output end of the main fan is connected to the heating furnace through a pipeline;

[0010] A second connecting pipe is connected to the outside of the heating furnace, a recovery and conveying fan is connected to one end of the second connecting pipe away from the heating furnace, and the output end of the recovery and conveying fan is connected to the second connecting pipe, an input end of the recovery and conveying fan is connected to a first connecting pipe, and a collecting piece is installed on the top of the main fan, and an end of the first connecting pipe away from the recovery and conveying fan is connected to the collecting piece.

[0011] The collecting member is a collecting box, which is arranged on the top of the main fan and connected to the first connecting pipe;

[0012] A filter is installed inside the collection box, and the filter is used to filter the air in the collection box.

[0013] The filter element is a filter plate, and the filter plate is slidably connected to the inner side of the collection box, a second sealing soft ball is arranged at the top and bottom of the filter plate and located on the inner and outer sides of the collection box, and mounting plates are arranged on the inner and outer sides of the collection box and at positions corresponding to the second sealing soft ball, first sealing soft balls are arranged at positions of the mounting plates close to the second sealing soft ball and on both sides of the second sealing soft ball, and the first sealing soft ball is arranged in a close fit with the second sealing soft ball.

[0014] The edge of the filter plate is flexibly arranged.

[0015] The filter plate and the collection box are in interference fit.

[0016] The diameter of the second sealing soft ball is greater than the diameter of the first sealing soft ball.

[0017] The technical effects achieved by the utility model are:

[0018] The utility model can effectively collect and recycle the gas leaked from the mechanical seal, thus preventing the gas from leaking into the atmosphere to cause environmental pollution and potential safety hazards, while reducing energy loss and the maintenance frequency of the fan, saving maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure between the main fan, the recovery and conveying fan and the heating furnace in the utility model;

[0021] Figure 3 It is a schematic diagram of the structure between the filter plate, the mounting plate and the collection box in the utility model;

[0022] Figure 4 It is a schematic diagram of the structure between the collecting box, the filter plate and the mounting plate in the utility model;

[0023] Figure 5 It is a schematic diagram of the structure between the first sealing soft ball and the second sealing soft ball in the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Main fan; 2. Heating furnace; 3. Collection box; 4. Recovery and conveying fan; 5. First connecting pipe; 6. Second connecting pipe; 7. Filter plate; 8. Mounting sheet; 9. First sealing soft ball; 10. Second sealing soft ball. DETAILED DESCRIPTION

[0026] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0027] like Figure 1-5 As shown, a blower seal leakage gas recovery device comprises a main blower 1 and a heating furnace 2. The output end of the main blower 1 is connected to the heating furnace 2 through a pipeline. The main blower 1 is a Roots blower, which adopts frequency conversion regulation and uses the volume change when the rotor rotates to inhale and discharge the gas. The main blower 1 is driven by an electric motor. There are two "8"-shaped hollow rotors in the casing of the Roots blower, which rotate in opposite directions through a pair of synchronous gears. A small gap is maintained between the two rotors and between the rotor and the inner wall of the casing to isolate the suction side from the discharge side. As the rotor rotates, the gas is pushed from the suction side to the discharge side. The flow rate of the Roots blower is not large, and the pressure head is relatively high.

[0028] The main fan 1 is mainly used to transport stable gas to the heating furnace 2 or the thermal oil furnace;

[0029] The outer side of the heating furnace 2 is connected with a second connecting pipe 6, and the end of the second connecting pipe 6 away from the heating furnace 2 is connected with a recovery and conveying fan 4, and the recovery and conveying fan 4 can be a common blower, and the output end of the recovery and conveying fan 4 is connected to the second connecting pipe 6, and the input end of the recovery and conveying fan 4 is connected to the first connecting pipe 5, and a collecting piece is installed on the top of the main fan 1, and the end of the first connecting pipe 5 away from the recovery and conveying fan 4 is connected to the collecting piece;

[0030] The coal gas leaked from the main blower 1 is collected by the collecting component, and the recovery and transportation blower 4 transports the collected coal gas through the first connecting pipe 5, and transports it to the heating furnace 2 through the second connecting pipe 6, so as to realize the recovery and utilization of the leaked coal gas, so that the coal gas leaked from the mechanical seal of the Roots blower can be effectively collected, and the coal gas leakage into the atmosphere to cause environmental pollution and safety hazards is prevented, while reducing energy loss and the maintenance frequency of the Roots blower, saving maintenance costs.

[0031] See attached Figure 3The collecting member is a collecting box 3, which is arranged on the top of the main fan 1 and is connected to the first connecting pipe 5. The collecting box 3 is used to collect the gas leaked from the main fan 1, and the inner diameter of the collecting box 3 is 100mm×200mm, so that more gas can be collected. The inner diameters of the recovery and conveying fan 4 and the second connecting pipe 6 are 20mm, so that more gas can be conveyed.

[0032] A filter is installed inside the collection box 3 , and the filter is used to filter the air in the collection box 3 .

[0033] See attached Figure 4-5 The filter element is a filter plate 7, and the filter plate 7 is slidably connected to the inner side of the collection box 3. The filter plate 7 is used to filter the gas inside the collection box 3. The edge of the filter plate 7 is flexibly set. Through this setting, when the filter plate 7 can be inserted into the collection box 3, it is prevented from being inserted too hard and causing a dent in the collection box 3, thereby limiting the sealing between the collection box 3 and the filter plate 7. The filter plate 7 and the collection box 3 are interference fit. Through this setting, the sealing between the filter plate 7 and the collection box 3 is better, thereby ensuring that the impurities in the gas transported to the first connecting pipe 5 and the inside of the heating furnace 2 are less;

[0034] A second soft sealing ball 10 is provided at the top and bottom of the filter plate 7 and located on the inner and outer sides of the collection box 3. A mounting sheet 8 is provided on the inner and outer sides of the collection box 3 and located at positions corresponding to the second soft sealing ball 10. A first soft sealing ball 9 is provided at a position of the mounting sheet 8 close to the second soft sealing ball 10 and located on both sides of the second soft sealing ball 10. The first soft sealing ball 9 is fitted with the second soft sealing ball 10. The diameter of the second soft sealing ball 10 is larger than that of the first soft sealing ball 9, so that the second soft sealing ball 10 can have a better resistance and extrusion effect on the first soft sealing ball 9, thereby making the deformation of the second soft sealing ball 10 and the first soft sealing ball 9 larger, thereby ensuring the sealing between the filter plate 7 and the collection box 3;

[0035] When the filter plate 7 needs to be cleaned, the filter plate 7 can be directly pulled out for cleaning. When the filter plate 7 is installed, the filter plate 7 is inserted into the collection box 3, and the second sealing soft ball 10 is pressed into the corresponding two first sealing soft balls 9, so that the first sealing soft ball 9 and the second sealing soft ball 10 are squeezed and deformed against each other, so that the filter plate 7 and the collection box 3 are relatively sealed, thereby preventing gas leakage.

[0036] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A fan seal leakage gas recovery device, comprising a main fan (1) and a heating furnace (2), Features: The output end of the main fan (1) is connected to the heating furnace (2) through a pipeline; The outer side of the heating furnace (2) is connected to a second connecting pipe (6), an end of the second connecting pipe (6) away from the heating furnace (2) is connected to a recovery and conveying fan (4), and the output end of the recovery and conveying fan (4) is connected to the second connecting pipe (6), the input end of the recovery and conveying fan (4) is connected to a first connecting pipe (5), and a collecting component is installed on the top of the main fan (1), and an end of the first connecting pipe (5) away from the recovery and conveying fan (4) is connected to the collecting component.

2. A fan seal leakage recovery device according to claim 1, Features: The collecting member is a collecting box (3), the collecting box (3) is arranged on the top of the main fan (1), and the collecting box (3) is connected to the first connecting pipe (5); A filter element is installed on the inner side of the collection box (3), and the filter element is used to filter the air in the collection box (3).

3. A fan seal leakage recovery device according to claim 2, Features: The filter element is a filter plate (7), and the filter plate (7) is slidably connected to the inner side of the collection box (3); a second soft sealing ball (10) is arranged at the top and bottom of the filter plate (7) and located on the inner side and the outer side of the collection box (3); a mounting plate (8) is arranged on the inner side and the outer side of the collection box (3) and located at a position corresponding to the second soft sealing ball (10); a first soft sealing ball (9) is arranged at a position of the mounting plate (8) close to the second soft sealing ball (10) and located on both sides of the second soft sealing ball (10); and the first soft sealing ball (9) is arranged in close contact with the second soft sealing ball (10).

4. A fan seal leakage recovery device according to claim 3, Features: The edge of the filter plate (7) is flexibly arranged.

5. A fan seal leakage recovery device according to claim 3, Features: The filter plate (7) and the collection box (3) are in interference fit.

6. A fan seal leakage recovery device according to claim 3, Features: The diameter of the second sealing soft ball (10) is greater than the diameter of the first sealing soft ball (9).

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