Self-cooling flushing filter

Abstract

The invention discloses a self-cooling flushing filter, and relates to the technical field of mechanical seal flushing, the self-cooling flushing filter comprises a shell and a base arranged below the shell, a cooling system is arranged in the base, a filtering system is arranged above the cooling system, a transmission system is arranged in the shell, and the transmission system extends to the bottom of the base; the cooling system and the filtering system are connected in series, and an alarm system is arranged at an outlet of the filtering system and arranged on the outer surface of the shell. According to the self-cooling flushing filter, a traditional flushing system is optimized, complex pipelines and heat exchangers are omitted, repeated circulation and utilization of flushing liquid can be achieved, the alarm system can monitor the blockage condition of the filter element in real time and achieve automatic alarm, and therefore manual intervention is reduced, and the working efficiency is improved. Meanwhile, the system has the advantages of being simple in structure, convenient and fast to mount and dismount, low in cost and the like.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical seal flushing, in particular to a self-cooling flushing filter. Background Art

[0002] In the fields of metallurgy, petroleum, chemical industry, environmental protection and other industries, hot oil pumps are often used to transport high-temperature hot oil media. The oil temperature is generally not less than 200°C. At this time, in order to protect the seals from deformation and damage due to overheating of the oil temperature, a flushing system is required to cool the seals in real time. At the same time, the hot oil medium will undergo a series of chemical reactions under the action of high temperature, forming impurity particles such as colloid and asphalt, which in turn affects the sealing performance and service life of the seals. Therefore, in order to ensure that the hot oil has a high degree of cleanliness, a filtering device is also required to filter the flushing liquid in real time.

[0003] The traditional flushing system has no filtering device, and the existing patent for the invention of an automatic backwashing filter with the authorization announcement number CN117138433B has no cooling device, and cannot simultaneously realize the cooling and filtering of high-temperature hot oil. If filtering and cooling are required at the same time, an independent cooling system needs to be installed. Its pipeline structure is complicated, and it is inconvenient to install and maintain. In addition, the filtering system used has no real-time early warning device, and thus it is impossible to timely detect the blockage of the filter element of the filtering system. Summary of the invention

[0004] The purpose of the present invention is to provide a self-cooling flushing filter to solve the problems raised in the above-mentioned background technology. On the basis of improving the cooling method of the traditional flushing system, filtering and alarm devices are added. Compared with the traditional flushing system, there is no need to add complex pipelines. It has a simple structure, easy installation and maintenance, low cost, and can automatically detect and automatically alarm, and can realize repeated circulation and utilization of the flushing liquid.

[0005] To achieve the above-mentioned objectives, the present invention provides a self-cooling flushing filter, comprising a shell and a base arranged below the shell, a cooling system is arranged in the base, a filtering system is arranged above the cooling system, a transmission system is arranged in the shell, the transmission system extends to the bottom of the base, connecting the cooling system and the filtering system in series, an alarm system is arranged at the outlet of the filtering system, and the alarm system is arranged on the outer surface of the shell.

[0006] Preferably, the transmission system comprises a motor arranged above the top plate, the motor is fixedly connected to the main shaft through a coupling, the main shaft is fixedly connected to a planetary gear system, the planetary gear system comprises a planetary carrier, the planetary carrier is fixedly connected to a bearing, the bearing is transmission-connected to a planetary gear, three planetary gears are arranged and are evenly distributed at intervals of 120° in the circumferential direction, the outer periphery of the planetary gear is meshedly connected with a gear ring, and the gear ring is fixedly arranged on a shaft shoulder in the housing;

[0007] A sun gear is disposed at the center of the three planetary gears and is meshed with the sun gear. The sun gear is fixedly disposed on the main shaft.

[0008] Preferably, the filtering system comprises a first filter element, a second filter element and a third filter element fixed below the planetary carrier, the lower ends of the first filter element, the second filter element and the third filter element are fixedly connected to a fixed plate, a partition is provided below the fixed plate, a sewage inlet is provided on the partition, the sewage inlet is connected to one end of a sewage pipe, and the other end of the sewage pipe is connected to a sewage outlet;

[0009] The tops and bottoms of the first filter element, the second filter element and the third filter element are respectively provided with a second stud and a first threaded hole, and the bottom of the planetary frame is provided with a second threaded hole, and the second threaded hole and the second stud are matched.

[0010] Preferably, the cooling system comprises a labyrinth heat sink and a ventilation frame preset on the base, a first bearing seat is arranged on the ventilation frame, a second bearing seat is arranged below the partition, and upper and lower ends of the labyrinth heat sink are fixedly connected to the second bearing seat and the first bearing seat respectively;

[0011] One side of the labyrinth heat sink is connected to the cooling water inlet, and the other side of the labyrinth heat sink is connected to the cooling water outlet.

[0012] Preferably, a fan slot is provided below the ventilation frame, a fan is provided in the fan slot, and the fan is fixedly connected to the main shaft.

[0013] Preferably, the alarm system includes an alarm arranged on the outside of the shell, the bottom of the alarm is connected to an alarm circuit, the end of the alarm circuit is connected to a particle size sensor, the particle size sensor is vertically arranged at the filtered water outlet, and is connected to the alarm circuit through the filtered water outlet, the filtered water outlet is arranged on one side of the shell, and a water inlet is arranged on the other side of the shell.

[0014] Preferably, the shell is fixedly connected to the base via a first positioning hole and is sealed by a sealing ring, and the base is fixedly connected to the partition via a positioning pin.

[0015] Preferably, the top plate is fixedly connected to the shell through a second positioning hole system, and the motor is fixedly arranged on the top plate through a third positioning hole system.

[0016] Preferably, a through hole for the main shaft to pass through is arranged at the center of the fixing disk, and a first stud is arranged on the fixing disk, and the first stud is matched with the first threaded hole.

[0017] Therefore, the present invention adopts the above-mentioned self-cooling flushing filter, and the motor in the transmission system drives the filter element to rotate, and the high-temperature flushing liquid with impurities from the seal is introduced into the filtration system and the cooling system for filtration and cooling. The clean room temperature flushing liquid after treatment is re-input into the mechanical seal for cooling. An alarm circuit and an end sensor are provided at the outlet to detect the filtration status of the outlet flushing liquid and timely monitor the clogging of the filter element; by optimizing the traditional flushing system and eliminating complex pipelines and heat exchangers, the flushing liquid can be repeatedly circulated and utilized, and the alarm system can monitor the clogging of the filter element in real time and realize automatic alarm, thereby reducing manual intervention and improving the reliability of the system and the sustainability of filtration and cooling. At the same time, the present invention also has the advantages of simple structure, convenient installation and disassembly, and low cost.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional structural schematic diagram of an embodiment of a self-cooling flushing filter of the present invention;

[0020] Figure 2 It is a schematic diagram of the vertical structure of a self-cooling flushing filter of the present invention;

[0021] Figure 3 A three-dimensional cross-sectional view of a self-cooling flushing filter of the present invention;

[0022] Figure 4 A bottom view of a self-cooling flushing filter according to the present invention;

[0023] Figure 5 It is a schematic diagram of the exploded structure of a planetary gear train of a self-cooling flushing filter of the present invention;

[0024] Figure 6 A flow chart of forward flushing and back flushing of a self-cooling flushing filter of the present invention;

[0025] Reference numerals: 1, motor; 2, coupling; 3, planetary gear system; 301, planet carrier; 302, bearing; 303, sun gear; 304, planetary gear; 305, ring gear; 4, housing; 5, shoulder; 601, first filter element; 602, second filter element; 603, third filter element; 7, main shaft; 8, through hole; 9, fixed plate; 10, filtered water outlet; 11, particle size sensor; 12, first positioning hole system; 13, sealing ring; 14, first bearing seat; 15, cooling water inlet; 16. Labyrinth heat sink; 17. Fan; 18. Fan slot; 19. Base; 20. Ventilation frame; 21. Cooling water outlet; 22. Sewage inlet; 23. Sewage pipe; 24. Sewage outlet; 25. Locating pin; 26. Partition; 27. Second bearing seat; 28. First stud; 29. ​​First threaded hole; 30. Water inlet; 31. Second stud; 32. Second threaded hole; 33. Second positioning hole system; 34. Top plate; 35. Third positioning hole system; 36. Alarm circuit; 37. Alarm. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0027] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Example

[0029] See also Figure 1-6 The present invention provides a self-cooling flushing filter, comprising a housing 4 and a base 19 disposed below the housing 4, wherein the housing 4 is fixedly connected to the base 19 through a first positioning hole system 12 and sealed by a sealing ring 13. A cooling system is disposed in the base 19, a filtering system is disposed above the cooling system, a transmission system is disposed in the housing 4, the transmission system extends to the bottom of the base 19, and the cooling system and the filtering system are connected in series, an alarm system is disposed at the outlet of the filtering system, and the alarm system is disposed on the outer surface of the housing 4.

[0030] The transmission system includes a motor 1 arranged above a top plate 34, the top plate 34 is fixedly connected to the housing 4 through a second positioning hole system 33, and the motor 1 is fixedly arranged on the top plate 34 through a third positioning hole system 35. The motor 1 is fixedly connected to the main shaft 7 through a coupling 2, and the main shaft 7 is fixedly connected to the planetary gear system 3. The planetary gear system 3 includes a planet carrier 301, the planet carrier 301 is fixedly connected to a bearing 302, and the bearing 302 is transmission-connected to a planetary gear 304. There are three planetary gears 304, which are evenly distributed at intervals of 120° in the circumferential direction. The outer periphery of the planetary gears 304 is meshedly connected with a ring gear 305, and the ring gear 305 is fixedly arranged on a shoulder 5 in the housing 4. A sun gear 303 is arranged at the center of the three planetary gears 304, and is meshedly connected with the sun gear 303, and the sun gear 303 is fixedly arranged on the main shaft 7. When the transmission system is working, the motor 1 rotates to drive the main shaft 7 to rotate, and the sun gear 303 in the planetary gear system 3 rotates synchronously, driving the three planetary gears 304 meshing with it to rotate synchronously. At the same time, the first filter element 601, the second filter element 602, and the third filter element 603 fixedly connected to the planetary frame 301 rotate synchronously. When filtering the flushing liquid entering the housing 4, a flow field rotating with the rotation direction of the main shaft 7 is formed inside the filter element, and the impurity particles in the flushing liquid rotate in the same direction of the flow field under the action of centrifugal force. When shutting down, some impurity particles fall on the partition 26 and near the sewage outlet, and the remaining impurities stay in the filter element. During backwashing, the particle impurities are uniformly discharged from the sewage outlet 24.

[0031] When the flushing liquid enters the housing 4 for filtration, the transmission system drives the first filter element 601, the second filter element 602, and the third filter element 603 to rotate synchronously, thereby expanding the contact area between the flushing liquid and the first filter element 601, the second filter element 602, and the third filter element 603, and increasing the first filter element 601, the second filter element 602, and the third filter element 603's ability to capture impurity particles in the flushing liquid, thereby greatly reducing the risk of clogging in traditional filter element filtering methods and increasing the service life of the first filter element 601, the second filter element 602, and the third filter element 603.

[0032] The filtering system includes a first filter element 601, a second filter element 602 and a third filter element 603 fixed below the planetary carrier 301. The lower ends of the first filter element 601, the second filter element 602 and the third filter element 603 are fixedly connected to the fixed disk 9. A through hole 8 for the main shaft 7 to pass through is provided at the center of the fixed disk 9. The fixed disk 9 is provided with a first stud 28. A partition 26 is provided below the fixed disk 9. A sewage inlet 22 is provided on the partition 26. The sewage inlet 22 is connected to one end of a sewage pipe 23. The other end of the sewage pipe 23 is connected to a sewage outlet 24. The base 19 is fixedly connected to the partition 26 through a positioning pin 25.

[0033] The top and bottom of the first filter element 601, the second filter element 602 and the third filter element 603 are respectively provided with a second stud 31 and a first threaded hole 29, and the first threaded hole 29 is adapted to the first stud 28. The bottom of the planet carrier 301 is provided with a second threaded hole 32, and the second threaded hole 32 is adapted to the second stud 31.

[0034] The cooling system includes a labyrinth heat sink 16 and a ventilation frame 20 preset on a base 19, and the ventilation frame 20 and the base 19 are an integrated structure. A first bearing seat 14 is arranged on the ventilation frame 20, and a second bearing seat 27 is arranged below the partition 26. The upper and lower ends of the labyrinth heat sink 16 are fixedly connected to the second bearing seat 27 and the first bearing seat 14 respectively. One side of the labyrinth heat sink 16 is connected to the cooling water inlet 15, and the other side of the labyrinth heat sink 16 is connected to the cooling water outlet 21. A fan slot 18 is arranged below the ventilation frame 20, and a fan 17 is arranged in the fan slot 18. The fan 17 is fixedly connected to the main shaft 7.

[0035] The filtered water outlet 10 is arranged on one side of the housing 4, and the water inlet 30 is arranged on the other side of the housing 4. The water inlet 30 is connected to the flushing liquid in the mechanical seal system, the filtered water outlet 10 and the cooling water inlet 15 are connected through relevant pipelines and valves, and the cooling water outlet 21 is connected to the mechanical seal system, and the clean flushing liquid after filtering and cooling is input into the mechanical seal system again to cool it, eliminating complex pipelines and heat exchangers, and realizing repeated circulation and utilization of the flushing liquid.

[0036] The alarm system includes an alarm 37 disposed on the outside of the housing 4, the bottom of the alarm 37 is connected to an alarm circuit 36, the end of the alarm circuit 36 ​​is connected to a particle size sensor 11, and the particle size sensor 11 is vertically disposed at the filtered water outlet 10 and connected to the alarm circuit 36 ​​through the filtered water outlet 10. When the first filter element 601, the second filter element 602, and the third filter element 603 are blocked, the impurity particles in the flushing liquid increase, causing the resistance inside the particle sensor to change, the total resistance in the alarm circuit to change, and the alarm 37 to be turned on, realizing automatic alarm.

[0037] like Figure 6 As shown, during the forward flushing process, the flushing liquid is detected by the particle size sensor 11 at the filtered water outlet 10. When the particle concentration in the flushing liquid meets the filtering standard, the flushing liquid is input into the cooling system and then re-input into the seal. When the particle size sensor 11 detects that the particle concentration in the flushing liquid does not meet the standard, it will automatically alarm, and the machine needs to be stopped for backwashing.

[0038] During the backwash process, the resistance of the particle size sensor 11 placed in the filtered water outlet 10 at the end of the alarm circuit 36 ​​will change according to the concentration of the impurity particles. As the number of impurity particles increases, the built-in resistance of the particle sensor changes, causing the total resistance in the alarm circuit to change, and the alarm 37 is turned on to achieve automatic alarm. At this time, the machine needs to be stopped, the sewage outlet 24 is opened, the water inlet 30 is closed, and the flushing water is input into the housing 4 from the filtered water outlet 10. The motor 1 is controlled to drive the main shaft 7 to reverse through the coupling 2. The main shaft 7 drives the sun gear 303 in the planetary gear system 3 to rotate synchronously, and the planetary gear 304 meshing with the sun gear 303 reverses synchronously. The planetary carrier 301 drives the first filter element 601, the second filter element 602, and the third filter element 603 to reverse synchronously. The impurities at the bottom of the first filter element 601, the second filter element 602, and the third filter element 603 and attached to the inner wall fall off with the pressure of the flushing water and the reverse rotation of the first filter element 601, the second filter element 602, and the third filter element 603, and are discharged to the sewage outlet 24 with the flushing water until they are discharged from the housing 4.

[0039] The principle of the device is: the flushing liquid containing impurities and high temperature from the mechanical seal system is introduced into the filtering system and the cooling system, and after filtering and cooling, a clean flushing liquid at room temperature is obtained, and then reintroduced into the mechanical seal system for cooling. At the same time, the particle size sensor 11 at the end of the alarm line 36 at the outlet of the filtering system can detect the particle state of the flushing liquid at the filtered water outlet 10 in real time, and timely detect the blockage of the filter element, thereby realizing real-time monitoring and protection of the system.

[0040] When in use, the flushing liquid output from the mechanical sealing system is injected into the water inlet 30 in the shell 4. After being filtered, the flushing liquid is output from the filtered water outlet 10 on the shell 4. After filtering, it enters the cooling structure through the cooling water inlet 15, is cooled by the labyrinth heat sink 16, and then is output from the cooling water outlet 21, and finally input into the mechanical sealing system.

[0041] When used specifically, Figure 1-Figure 5As shown, the motor 1 drives the main shaft 7 to rotate through the coupling 2, and the sun gear 303 rotates with the main shaft 7. The rotation of the sun gear 303 drives the planetary gear 304 meshing therewith to rotate, and the planetary gear 304 drives the first filter element 601, the second filter element 602, and the third filter element 603 to rotate, and the flushing liquid entering the housing 4 is rotationally filtered to increase the filtering area of ​​the flushing liquid. After filtering, the flushing liquid enters the cooling water inlet 15 through the filtered water outlet 10, and then enters the labyrinth heat sink 16. After passing through the complex labyrinth pipeline, the heat of the flushing liquid is transferred to the labyrinth heat sink 16, and the labyrinth heat sink 16 then transfers the heat to the air. At the same time, the fan 17 fixed on the main shaft 7 rotates synchronously with the main shaft 7 driven by the rotating main shaft 7, and the large cooling wind generated forces the labyrinth heat sink 16 to dissipate heat, and continuously takes away the heat on the labyrinth heat sink 16, so that the temperature of the labyrinth heat sink 16 is always maintained in a low range, thereby improving the cooling efficiency. Under the forced air cooling effect of the fan 17, the heat from the flushing liquid in the labyrinth heat sink 16 is continuously taken away through the heat dissipation channel, which greatly reduces the temperature of the flushing liquid in the labyrinth heat sink 16. When the flushing liquid passes through the labyrinth heat sink 16 and reaches the cooling water outlet 21, the temperature of the flushing liquid has been cooled to meet the requirements for cooling the mechanical seal. At this time, the flushing liquid will be introduced into the mechanical seal system again to cool and lubricate the mechanical seal, thereby ensuring a good working environment for the mechanical seal.

[0042] Therefore, the present invention adopts the above-mentioned self-cooling flushing filter, and by optimizing the traditional flushing system and eliminating complex pipes and heat exchangers, it can realize the repeated circulation and utilization of the flushing liquid. The alarm system can monitor the blockage of the filter element in real time and realize automatic alarm, thereby reducing manual intervention and improving the reliability of the system and the sustainability of filtration and cooling. It also has the advantages of simple structure, easy installation and disassembly, and low cost.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A self-cooling flushing filter, characterized in that: It includes a shell and a base arranged below the shell, a cooling system is arranged in the base, a filtering system is arranged above the cooling system, a transmission system is arranged in the shell, the transmission system extends to the bottom of the base, and the cooling system and the filtering system are connected in series, an alarm system is arranged at the outlet of the filtering system, and the alarm system is arranged on the outer surface of the shell.

2. A self-cooling flushing filter according to claim 1, characterized in that: The transmission system includes a motor arranged above the top plate, the motor is fixedly connected to the main shaft through a coupling, the main shaft is fixedly connected to a planetary gear system, the planetary gear system includes a planetary carrier, the planetary carrier is fixedly connected to a bearing, the bearing is transmission-connected to a planetary gear, three planetary gears are arranged and are evenly distributed at intervals of 120° in the circumferential direction, the outer periphery of the planetary gear is meshedly connected with a gear ring, and the gear ring is fixedly arranged on a shaft shoulder in the housing; A sun gear is disposed at the center of the three planetary gears and is meshed with the sun gear. The sun gear is fixedly disposed on the main shaft.

3. A self-cooling flushing filter according to claim 2, characterized in that: The filtering system comprises a first filter element, a second filter element and a third filter element fixed below the planet carrier, wherein the lower ends of the first filter element, the second filter element and the third filter element are fixedly connected to a fixed plate, a partition is provided below the fixed plate, a sewage discharge inlet is provided on the partition, the sewage discharge inlet is connected to one end of a sewage discharge pipe, and the other end of the sewage discharge pipe is connected to a sewage discharge outlet; The tops and bottoms of the first filter element, the second filter element and the third filter element are respectively provided with a second stud and a first threaded hole, and the bottom of the planetary frame is provided with a second threaded hole, and the second threaded hole and the second stud are matched.

4. A self-cooling flushing filter according to claim 3, characterized in that: The cooling system comprises a labyrinth heat sink and a ventilation frame preset on the base, a first bearing seat is arranged on the ventilation frame, a second bearing seat is arranged below the partition, and upper and lower ends of the labyrinth heat sink are fixedly connected to the second bearing seat and the first bearing seat respectively; One side of the labyrinth heat sink is connected to the cooling water inlet, and the other side of the labyrinth heat sink is connected to the cooling water outlet.

5. A self-cooling flushing filter according to claim 4, characterized in that: A fan slot is arranged below the ventilation frame, a fan is arranged in the fan slot, and the fan is fixedly connected to the main shaft.

6. A self-cooling flushing filter according to claim 1, characterized in that: The alarm system includes an alarm arranged on the outside of the shell, the bottom of the alarm is connected to an alarm circuit, the end of the alarm circuit is connected to a particle size sensor, the particle size sensor is vertically arranged at the filtered water outlet, and is connected to the alarm circuit through the filtered water outlet. The filtered water outlet is arranged on one side of the shell, and a water inlet is arranged on the other side of the shell.

7. A self-cooling flushing filter according to claim 4, characterized in that: The shell is fixedly connected to the base through a first positioning hole and is sealed by a sealing ring. The base is fixedly connected to the partition through a positioning pin.

8. A self-cooling flushing filter according to claim 2, characterized in that: The top plate is fixedly connected to the housing through a second positioning hole system, and the motor is fixedly arranged on the top plate through a third positioning hole system.

9. A self-cooling flushing filter according to claim 3, characterized in that: A through hole for the main shaft to pass through is arranged at the center of the fixing disk, and a first stud is arranged on the fixing disk, and the first stud is matched with the first threaded hole.

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