A circulating cooling device for mechanical seal seat of Roots blower

Abstract

The utility model provides a mechanical seal seat circulation cooling device for Roots blower, which is provided with a main shaft and an oil tank, one end of the main shaft is located on the axial outer side of the oil tank, the outer circumference of the main shaft located on the axial outer side of the oil tank is provided with a mechanical seal seat, the mechanical seal seat and the outer circumference of the main shaft are rotationally sealed and connected, the axial inner end of the mechanical seal seat is simultaneously sealed and fixed with the axial outer end of the oil tank, a cooling channel is provided inside the mechanical seal seat, the two ends of the cooling channel respectively penetrate to the outside of the mechanical seal seat, one side of the mechanical seal seat is provided with a coolant holding box, the coolant holding box includes a coolant holding box outer shell and a coolant holding box inner cavity, and the two ends of the cooling channel are respectively connected with the coolant holding box inner cavity. It solves the technical problem that when the existing Roots blower is in operation, harmful gases inside the blower leak outward through the rotating connection between the main shaft and the oil tank. The utility model can be widely used in Roots blowers.

Description

Technical Field

[0001] The utility model relates to a Roots blower, in particular to a mechanical seal seat circulating cooling device for the Roots blower. Background Art

[0002] Roots blowers are widely used in industrial fields such as electricity, petroleum, chemical industry, water treatment, etc., and are especially suitable for the transportation of industrial gases.

[0003] Among them, the transportation requirements for some harmful gases, such as hydrogen, biogas, oil and gas, are relatively strict, and the sealing requirements of Roots blowers have higher standards, especially the rotating connection between the main shaft and the oil tank of the Roots blower. When the main shaft rotates at high speed for a long time, the rotating connection between the main shaft and the oil tank is prone to varying degrees of wear. Long-term wear will cause gaps in the rotating connection between the main shaft and the oil tank, causing harmful gases inside the blower to leak out through the gaps.

[0004] In order to solve the problem of harmful gases inside the blower leaking out through the gap at the rotating connection between the main shaft and the oil tank, a mechanical seal seat is installed at the rotating connection between the main shaft and the oil tank to isolate and seal the harmful gases leaking out through the gap at the rotating connection between the main shaft and the oil tank. However, during the long-term operation of the blower, the overall temperature of the mechanical seal seat will increase significantly. If the mechanical seal seat is in a high temperature state for a long time, the sealing effect of the mechanical seal seat will be reduced, causing the harmful gases leaking out through the gap at the rotating connection between the main shaft and the oil tank to leak out through the mechanical seal seat, causing harm to the operator and the surrounding environment, increasing maintenance costs, and reducing the service life of the Roots blower. Utility Model Content

[0005] In view of the above technical problems, the utility model provides a circulating cooling device for a mechanical seal seat of a Roots blower. The circulating cooling device for a mechanical seal seat of a Roots blower can continuously cool the mechanical seal seat to ensure that the mechanical seal seat is continuously in a suitable operating temperature range, improve the sealing effect of the mechanical seal seat, ensure that harmful gases leaking out through the gap at the rotating connection between the main shaft and the oil tank will not leak out through the mechanical seal seat, will not cause harm to operators and the surrounding environment, reduce maintenance costs, and extend the service life of the Roots blower.

[0006] To this end, the technical solution of the utility model is a mechanical seal seat circulation cooling device for a Roots blower, which is provided with a main shaft and an oil tank, the main shaft passes through the oil tank, one end of the main shaft is located axially outside the oil tank, and the main shaft and the oil tank are connected in a rotary seal;

[0007] A mechanical seal seat is provided on the outer circumference of the main shaft located axially outside the oil tank. The mechanical seal seat is rotationally sealed with the outer circumference of the main shaft, and the axial inner end of the mechanical seal seat is sealed and fixed with the axial outer end of the oil tank.

[0008] A cooling channel is provided inside the mechanical seal seat, and the cooling channel includes a cooling channel inlet and a cooling channel outlet. The cooling channel inlet and the cooling channel outlet are respectively located at the outermost positions at both ends of the cooling channel, and the cooling channel inlet and the cooling channel outlet respectively penetrate to the outside of the mechanical seal seat;

[0009] A connecting pipe is fixedly provided at the inlet of the cooling channel, and a coolant holding box is provided at the other end of the connecting pipe. The coolant holding box includes a coolant holding box outer shell and a coolant holding box inner cavity. A circulating water channel is provided inside the coolant holding box outer shell. The circulating water channel includes a circulating water inlet and a circulating water outlet. The circulating water inlet and the circulating water outlet are respectively located at the outermost positions at both ends of the circulating water channel, and the circulating water inlet and the circulating water outlet respectively penetrate to the outside of the coolant holding box.

[0010] The coolant holding box is provided with a coolant holding box inlet and a coolant holding box outlet, the coolant holding box inlet and the coolant holding box outlet are respectively communicated with the inner cavity of the coolant holding box, and the coolant holding box outlet is communicated with a side of the connecting pipe away from the cooling channel inlet;

[0011] A connecting pipe is fixedly provided at the inlet of the coolant holding box, and a driving pump is fixedly provided at the other end of the connecting pipe, which is connected to the outlet end of the driving pump. A connecting pipe is fixedly provided at the inlet end of the driving pump, and the other end of the connecting pipe is connected to the outlet of the cooling channel.

[0012] Preferably, a valve is connected to the upper end of the coolant holding box, one end of the valve is connected to the inner cavity of the coolant holding box, and the other end of the valve is used to inject inert gas;

[0013] A pressure gauge and a pressure transmitter are respectively fixedly arranged between the valve and the coolant containing tank.

[0014] Preferably, a temperature transmitter is fixedly provided on the connecting pipe between the inlet of the coolant holding tank and the driving pump;

[0015] A temperature gauge is fixedly provided on the connecting pipe between the driving pump and the outlet of the cooling channel.

[0016] Preferably, a discharge channel is provided on the mechanical seal seat, one end of the discharge channel is connected to the bottom end of the cooling channel, and the other end of the discharge channel passes through the outside of the mechanical seal seat. A valve is fixedly provided on the channel opening of the discharge channel located outside the mechanical seal seat, and a flange is fixedly provided at the other end of the valve.

[0017] Preferably, the outlet end of the driving pump and the corresponding connecting pipe are fixedly connected via a flange;

[0018] The inlet end of the driving pump and the corresponding connecting pipeline are fixedly connected via a flange.

[0019] Preferably, a liquid level window is provided on the side of the coolant holding tank.

[0020] The beneficial effects of the utility model are:

[0021] 1. A cooling channel is opened inside the mechanical seal seat, and the coolant in the coolant holding box is pushed into the cooling channel from the inlet by a driving pump, and then flows out from the outlet of the cooling channel. During the flow of the coolant in the cooling channel, most of the heat in the mechanical seal seat is taken away, thereby cooling the mechanical seal seat. The cycle of this step can continuously reduce the overall temperature of the mechanical seal seat, and ensure that the mechanical seal seat maintains a suitable temperature range during the operation of the blower, thereby ensuring that the mechanical seal seat has efficient sealing, extending the service life of the mechanical seal seat, and avoiding the leakage of harmful gases through the mechanical seal seat. It will not cause harm to the operator and the surrounding environment, reduce maintenance costs, and ultimately extend the overall service life of the Roots blower.

[0022] 2. A circulating water channel is opened inside the outer shell of the coolant holding box. The cooling water flows in from the circulating water inlet and then out from the circulating water outlet. The cycle of this step can continuously reduce the temperature of the coolant in the inner cavity of the coolant holding box, thereby further improving the cooling effect of the coolant on the mechanical seal seat.

[0023] 3. A valve is arranged at the upper end of the coolant holding box. By injecting inert gas at the other end of the valve, the inert gas is injected into the inner cavity of the coolant holding box. The inert gas in the inner cavity of the coolant holding box can continuously pressurize the coolant. With the assistance of the inert gas pressure, the coolant can circulate more smoothly in the entire connecting pipeline, thereby accelerating the cooling speed and improving the cooling effect.

[0024] 4. By arranging a pressure gauge and a pressure transmitter at the upper end of the coolant holding box and arranging a temperature gauge and a temperature transmitter on the connecting pipe, the pressure state of the inert gas in the coolant holding box and the temperature state of the coolant in the entire circulation pipeline can be monitored in real time. Specifically, by installing the pressure gauge and the temperature gauge, relevant personnel can monitor the pressure state of the inert gas in the coolant holding box and the temperature state of the coolant in the entire circulation pipeline in real time at the blower site, and by installing the pressure transmitter and the temperature transmitter, the pressure transmitter and the temperature transmitter can send the monitoring data to the remote monitoring terminal, and relevant personnel can remotely monitor the pressure state of the inert gas in the coolant holding box and the temperature state of the coolant in the entire circulation pipeline in real time in an area outside the blower site, thereby increasing the flexibility of monitoring and further ensuring the safety of the operation of the entire circulating cooling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the operating principle diagram of the utility model;

[0026] Figure 2 This is a schematic diagram of the installation of the mechanical seal seat of the utility model;

[0027] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle.

[0028] Explanation of symbols in the figure:

[0029] Mechanical seal seat; 101. Cooling channel; 102. Cooling channel inlet; 103. Cooling channel outlet; 104. Discharge channel; 2. Spindle; 3. Oil tank; 4. Connecting pipe; 5. Coolant holding box; 501. Coolant holding box inlet; 502. Coolant holding box outlet; 503. Circulating water inlet; 504. Circulating water outlet; 505. Liquid level window; 506. Circulating water channel; 507. Coolant holding box outer shell; 508. Coolant holding box inner cavity; 6. Pressure gauge; 7. Pressure transmitter; 8. Valve; 9. Temperature transmitter; 10. Drive pump; 11. Flange; 12. Temperature gauge. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with embodiments.

[0031] pass Figure 1-Figure 3 It can be seen that the mechanical seal seat circulating cooling device for the Roots blower is provided with a main shaft 2 and an oil tank 3. The main shaft 2 passes through the oil tank 3. One end of the main shaft 2 is located axially outside the oil tank 3. The main shaft 2 and the oil tank 3 are rotationally sealed and connected.

[0032] A mechanical seal seat 1 is provided on the outer circumference of the main shaft 2 located axially outside the oil tank 3. The mechanical seal seat 1 is rotationally sealed to the outer circumference of the main shaft 2, and the axial inner end of the mechanical seal seat 1 is sealed and fixed to the axial outer end of the oil tank 3.

[0033] A cooling channel 101 is provided inside the mechanical seal seat 1. The cooling channel 101 includes a cooling channel inlet 102 and a cooling channel outlet 103. The cooling channel inlet 102 and the cooling channel outlet 103 are respectively located at the outermost positions at both ends of the cooling channel 101. The cooling channel inlet 102 and the cooling channel outlet 103 respectively penetrate to the outside of the mechanical seal seat 1. The inner surface of the cooling channel is a smoothly transitioned inner surface, which can increase the smoothness of the flow of the coolant in the cooling channel and improve the cooling effect of the coolant on the mechanical seal seat 1.

[0034] A connecting pipe 4 is fixedly provided at the cooling channel inlet 102, and a cooling liquid holding box 5 is provided at the other end of the connecting pipe 4. The cooling liquid holding box 5 includes a cooling liquid holding box outer shell 507 and a cooling liquid holding box inner cavity 508. The cooling liquid holding box inner cavity 508 is filled with cooling liquid. A circulating water channel 506 is provided inside the cooling liquid holding box outer shell 507. The circulating water channel 506 includes a circulating water inlet 503 and a circulating water outlet 504. The circulating water inlet 503 and the circulating water outlet 504 are respectively located at the outermost positions at both ends of the circulating water channel 506, and the circulating water inlet 503 and the circulating water outlet 504 respectively penetrate to the outside of the cooling liquid holding box 5.

[0035] By opening a circulating water channel 506 inside the outer shell 507 of the cooling liquid holding box, the cooling water flows out from the circulating water inlet and then from the circulating water outlet. The cycle of this step can continuously reduce the temperature of the coolant in the inner cavity 508 of the cooling liquid holding box, thereby further improving the cooling effect of the coolant on the mechanical seal seat.

[0036] The coolant holding box 5 is provided with a coolant holding box inlet 501 and a coolant holding box outlet 502, which are respectively connected to the coolant holding box inner cavity 508, and the coolant holding box outlet 502 is connected to the side of the connecting pipe 4 away from the cooling channel inlet 102.

[0037] A connecting pipe 4 is fixedly provided at the inlet 501 of the coolant holding tank, a driving pump 10 is fixedly provided at the other end of the connecting pipe 4 and is connected to the outlet end of the driving pump 10 , a connecting pipe 4 is fixedly provided at the inlet end of the driving pump 10 , and the other end of the connecting pipe 4 is connected to the cooling channel outlet 103 .

[0038] A valve 8 is connected to the upper end of the coolant holding box 5, one end of the valve 8 is connected to the inner cavity 508 of the coolant holding box, and the other end of the valve 8 is used to inject inert gas. The inert gas is injected into the inner cavity 508 of the coolant holding box. The inert gas in the inner cavity 508 of the coolant holding box can continuously apply pressure to the coolant. With the assistance of the inert gas pressure, it can ensure that the coolant circulates more smoothly in the entire connecting pipe 4, thereby accelerating the cooling speed and improving the cooling effect.

[0039] A pressure gauge 6 and a pressure transmitter 7 are fixedly provided between the valve 8 and the coolant holding tank 5, respectively; a temperature transmitter 9 is fixedly provided on the connecting pipe 4 between the coolant holding tank inlet 501 and the driving pump 10; and a temperature gauge 12 is fixedly provided on the connecting pipe 4 between the driving pump 10 and the cooling channel outlet 103.

[0040] By arranging a pressure gauge 6 and a pressure transmitter 7 at the upper end of the coolant holding tank 5 and arranging a temperature gauge 12 and a temperature transmitter 9 on the connecting pipe, the pressure state of the inert gas in the coolant holding tank 5 and the temperature state of the coolant in the entire circulation pipeline can be monitored in real time. Specifically, by installing the pressure gauge 6 and the temperature gauge 12, relevant personnel can monitor the pressure state of the inert gas in the coolant holding tank 5 and the temperature state of the coolant in the entire circulation pipeline in real time at the blower site, and by installing the pressure transmitter 7 and the temperature transmitter 9, the pressure transmitter 7 and the temperature transmitter 9 can send the monitoring data to the remote monitoring terminal, and relevant personnel can remotely monitor the pressure state of the inert gas in the coolant holding tank 5 and the temperature state of the coolant in the entire circulation pipeline in real time in an area outside the blower site, thereby increasing the flexibility of monitoring and further ensuring the safety of the operation of the entire circulating cooling device.

[0041] A discharge channel 104 is provided on the mechanical seal seat 1, one end of the discharge channel 104 is connected to the bottom end of the cooling channel 101, and the other end of the discharge channel 104 passes through the outside of the mechanical seal seat 1. A valve 8 is fixedly provided on the channel opening of the discharge channel 104 located outside the mechanical seal seat 1, and a flange 11 is fixedly provided on the other end of the valve 8.

[0042] The discharge channel 104 can discharge the coolant and harmful substances in the mechanical seal seat 1. At the same time, a flange 11 is installed on the valve 8. When in use, the flange 11 is connected to a designated discharge pipe to discharge the coolant and harmful substances in the mechanical seal seat 1 to a designated area or a designated container, thereby preventing the coolant and harmful substances in the mechanical seal seat 1 from being discharged into the external environment and causing pollution to the external environment.

[0043] The outlet end of the driving pump 10 and the corresponding connecting pipe 4 are fixedly connected by a flange 11, and the inlet end of the driving pump 10 and the corresponding connecting pipe 4 are fixedly connected by a flange 11. By using the flange 11 for fixed connection, when the driving pump 10 needs to be maintained or repaired, the driving pump 10 can be quickly disassembled, the operation is simple and quick, the operation time is saved, and the work efficiency is improved.

[0044] A liquid level window 505 is provided on the side of the coolant holding tank 5 , through which the remaining amount of coolant in the coolant holding tank 5 and the cleanliness of the coolant can be checked in real time.

[0045] The circulating cooling device has a cooling channel 101 formed inside the mechanical seal seat 1. The coolant in the coolant holding box 5 is pushed into the cooling channel from the inlet 102 by driving the pump 10, and then flows out from the outlet 103 of the cooling channel. During the flow of the coolant in the cooling channel 101, most of the heat in the mechanical seal seat 1 is taken away, thereby cooling the mechanical seal seat 1. The cycle of this step can continuously reduce the overall temperature of the mechanical seal seat 1, and ensure that the mechanical seal seat 1 maintains a suitable temperature range during the operation of the blower, thereby ensuring that the mechanical seal seat 1 has efficient sealing, extending the service life of the mechanical seal seat 1, and preventing harmful gases from leaking out through the mechanical seal seat 1, which will not cause harm to the operator and the surrounding environment, reduce maintenance costs, and ultimately extend the overall service life of the Roots blower.

[0046] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A mechanical seal seat circulating cooling device for a Roots blower, characterized in that: A main shaft and an oil tank are provided, the main shaft passes through the oil tank, one end of the main shaft is located axially outside the oil tank, and the main shaft and the oil tank are connected in a rotary seal; A mechanical seal seat is provided on the outer circumference of the main shaft located axially outside the oil tank, the mechanical seal seat is rotationally sealed with the outer circumference of the main shaft, and the axial inner end of the mechanical seal seat is sealed and fixed with the axial outer end of the oil tank; A cooling channel is provided inside the mechanical seal seat, and the cooling channel includes a cooling channel inlet and a cooling channel outlet, the cooling channel inlet and the cooling channel outlet are respectively located at the outermost positions at both ends of the cooling channel, and the cooling channel inlet and the cooling channel outlet respectively penetrate to the outside of the mechanical seal seat; A connecting pipe is fixedly provided at the inlet of the cooling channel, and a cooling liquid holding box is provided at the other end of the connecting pipe. The cooling liquid holding box includes a cooling liquid holding box outer shell and a cooling liquid holding box inner cavity. A circulating water channel is provided inside the cooling liquid holding box outer shell. The circulating water channel includes a circulating water inlet and a circulating water outlet. The circulating water inlet and the circulating water outlet are respectively located at the outermost positions at both ends of the circulating water channel, and the circulating water inlet and the circulating water outlet respectively penetrate to the outside of the cooling liquid holding box. The coolant tank is provided with a coolant tank inlet and a coolant tank outlet, the coolant tank inlet and the coolant tank outlet are respectively connected to the inner cavity of the coolant tank, and the coolant tank outlet is connected to a side of the connecting pipe away from the cooling channel inlet; The inlet of the coolant holding box is fixedly provided with a connecting pipe, the other end of which is fixedly provided with a driving pump and communicated with the outlet end of the driving pump. The inlet end of the driving pump is fixedly provided with a connecting pipe, the other end of which is communicated with the outlet of the cooling channel.

2. The mechanical seal seat circulating cooling device for Roots blower according to claim 1 is characterized in that: The upper end of the cooling liquid containing box is connected with a valve, one end of the valve is connected with the inner cavity of the cooling liquid containing box, and the other end of the valve is used for injecting inert gas; A pressure gauge and a pressure transmitter are respectively fixedly arranged between the valve and the coolant containing tank.

3. The mechanical seal seat circulating cooling device for Roots blower according to claim 1 is characterized in that: A temperature transmitter is fixedly provided on the connecting pipe between the inlet of the coolant containing tank and the driving pump; A temperature gauge is fixedly provided on the connecting pipe between the driving pump and the outlet of the cooling channel.

4. The mechanical seal seat circulating cooling device for Roots blower according to claim 1, characterized in that: The mechanical seal seat is provided with a discharge channel, one end of the discharge channel is connected to the bottom end of the cooling channel, and the other end of the discharge channel passes through the outside of the mechanical seal seat. A valve is fixedly provided on the channel opening of the discharge channel located outside the mechanical seal seat, and a flange is fixedly provided at the other end of the valve.

5. The mechanical seal seat circulating cooling device for Roots blower according to claim 1, characterized in that: The outlet end of the driving pump and the corresponding connecting pipe are fixedly connected via a flange; The inlet end of the driving pump and the corresponding connecting pipeline are fixedly connected via a flange.

6. The mechanical seal seat circulating cooling device for Roots blower according to claim 1, characterized in that: A liquid level window is provided on the side of the coolant containing tank.

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