Multifunctional oil filling valve of refrigerator
By designing a multi-functional refueling valve, lubricating oil can be filled from multiple channels and the empty ratio in the filter is eliminated, which solves the problem of starting difficulties when filling the refrigerator lubricating oil, and improves the filling efficiency and service life of the equipment.
Patent Information
- Application Number
- CN202422489874.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The freezer needs to replace the lubricant after 1500 hours of operation. In the prior art, the empty ratio of the filter is large when filling the lubricant oil, resulting in the oil pressure not being detected during startup, the alarm is shut down, and multiple runs are required to start normally, resulting in oil deficiency in the components accelerated wear and shortened the equipment life.
A multi-functional refueling valve of a freezer is designed, including a sealed shaft sleeve, a refueling connection assembly and an oil pressure detection assembly. It can fill lubricant from multiple channels, eliminate the empty ratio in the filter, and ensure that the pressure of the lubricant reaches the normal starting condition through the oil pressure detection assembly.
It improves the lubricant filling efficiency, ensures that the filter is filled with lubricant, avoids the problem of undetectable oil pressure during startup, reduces the number of repeated starts of the equipment, and extends the service life of the equipment.
Smart Images
Figure CN222836650U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lubricating oil filling, in particular to a multifunctional filling valve for a refrigerator. Background Art
[0002] When the refrigerator is running, the lubricating oil passes through the filter 13 in the first lubricating oil chamber 15, then passes through the second lubricating oil pipe 14 (the second lubricating oil pipe 14 connects the filter 13 and the second lubricating oil chamber 16) and enters the second lubricating oil chamber 16, lubricates the screw shaft and then returns to the first lubricating oil chamber to form a cycle. The lubricating oil must be replaced after every 1500 hours of operation to ensure the best condition of the equipment. During previous maintenance, the lubricating oil flowed into the first lubricating oil chamber 15 through the high-position valve 11. Due to the high mesh number of the filter and the high viscosity of the lubricating oil, it was impossible to fill the filter in a short time. At this time, the empty space ratio in the filter is large. After the lubricating oil is filled, the differential pressure sensor cannot detect the oil pressure when starting and alarms and shuts down. It is necessary to repeat the operation many times to fill the filter before it can start normally, which delays a lot of time.
[0003] Due to repeated startup, the lubricating oil does not circulate widely, resulting in oil shortage and accelerated wear of parts, thus shortening the life of the equipment. Therefore, this is a problem that needs to be urgently solved by technical personnel in this field. Utility Model Content
[0004] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes a multifunctional refueling valve for a refrigerator, which can discharge and add lubricating oil, can add lubricating oil from multiple channels, improve the filling efficiency, and can eliminate the empty space ratio in the filter.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a multifunctional refueling valve for a refrigerator, including a sealing sleeve, the right end of the sealing sleeve is an interface end, which is used to be connected to the refrigerator connection port, and a threaded connection part for connecting to the refrigerator shell is arranged at the interface end. The sealing sleeve is composed of a sealing section and a connecting section from right to left, and a discharge and filling port is arranged on the sealing section. The discharge and filling port is connected with a refueling connection assembly, and an oil pressure detection assembly is arranged between the discharge and filling port and the interface end. A sealing shaft for blocking the discharge and filling port is sleeved in the sealing section of the sealing sleeve, an internal thread for connecting to the sealing shaft is arranged in the connecting section, and an external thread is arranged on the sealing shaft corresponding to the internal thread, and a connecting rod is fixedly connected to the left end of the sealing shaft, and the left end of the connecting rod passes through the outside of the sealing sleeve.
[0006] In the above scheme: the sealing sleeve is provided with a pressure detection port, and the oil pressure detection assembly is detachably connected to the pressure detection port.
[0007] In the above scheme: the oil pressure detection component includes an oil pressure valve, one end of the oil pressure valve is threadedly connected to the pressure detection port, and the other end of the oil pressure valve is installed with an oil pressure gauge.
[0008] In the above scheme: the refueling connection assembly includes a first valve, one end of which is threadedly connected to the discharge and filling port, and the other end of which is provided with a terminal for communicating with the lubricating oil supply system.
[0009] In the above solution, annular grooves for installing sealing rings are arranged at intervals in the sealing section along the axial direction of the sealing sleeve, which can improve the sealing effect.
[0010] In the above scheme: the left end of the sealing sleeve is threadedly connected with an end cap, and the end cap is provided with a through hole for the connecting rod to pass through, so as to facilitate the removal of the sealing shaft and replace the sealing ring to ensure the sealing effect.
[0011] In the above scheme: a handle is provided at one end of the connecting rod extending to the sealing sleeve, and the handle is detachably connected to the end of the connecting rod by a handle bolt to facilitate assembly and disassembly.
[0012] In the above solution: the threaded connection portion is an external thread.
[0013] In summary, the beneficial effects of the utility model are as follows: the sealing sleeve is connected to the refrigerator filter, which can not only realize the emptying of the waste lubricating oil through the sealing sleeve, but also serve as a lubricating oil filling port, and has multiple functions. In addition, the lubricating oil can be filled at the same time as the original lubricating oil filling interface of the refrigerator, thereby improving the filling efficiency. When filling, it can be filled from the inside of the filter to eliminate the empty ratio in the filter. When the refrigerator is started after maintenance, the lubricating oil immediately enters the large circulation. The differential pressure sensor will not alarm and stop when it detects the oil pressure, and the production will be carried out in advance. The efficiency will be significantly improved, and there is no need to repeatedly start the machine, thereby ensuring the service life of the equipment. The oil pressure detection component is set up to detect the pressure of the lubricating oil and ensure that it is emptied and filled in place. The sealing shaft is set up to block the sealing section, and avoid residual hollow sections in the sealing sleeve as much as possible. At the same time, it can also connect the oil pressure detection component and the discharge and filling port to achieve the purpose of detection, discharge and filling. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] Figure 2 It is an exploded view of the utility model.
[0016] Figure 3 It is a schematic diagram of the installation of the utility model. DETAILED DESCRIPTION
[0017] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:
[0018] like Figure 1 to Figure 3 As shown, a multifunctional refueling valve for a refrigerator includes a sealing sleeve 6, the right end of which is an interface end, and the interface end is provided with an external thread for connecting with a connection port at a crude oil pressure gauge of the refrigerator. Since the connection port is connected to a filter 13 through a pipeline, the sealing sleeve 6 can be connected to the filter 13.
[0019] The right half of the sealing sleeve 6 is a sealing section, and the left half is a connecting section. The sealing section is provided with a discharge filling port, which is connected to a refueling connection assembly. The refueling connection assembly includes a first valve 7, one end of which is threadedly connected to the discharge filling port, and the other end is provided with a terminal 8 for connecting to the lubricating oil supply system.
[0020] A pressure detection port is provided between the discharge and filling port and the interface end, and the pressure detection port is detachably connected with an oil pressure detection assembly. The oil pressure detection assembly includes an oil pressure valve 9, one end of the oil pressure valve 9 is threadedly connected to the pressure detection port, and the other end of the oil pressure valve 9 is installed with an oil pressure gauge 10, which can detect the oil pressure in the first lubricating oil chamber 15.
[0021] A sealing shaft 4 for blocking the discharge and filling ports is slidably connected in the sealing section, an internal thread for connecting with the sealing shaft 4 is provided in the connection section, and an external thread is provided on the sealing shaft 4 corresponding to the internal thread. A connecting rod is fixedly connected to the end of the sealing shaft 4 away from the interface end, and a handle 2 is provided at the end of the connecting rod passing through the sealing sleeve 6. The sealing shaft 4 can be rotated by the handle 2, thereby driving the sealing shaft 4 to slide left and right, thereby realizing oil pressure detection and filling or discharge.
[0022] Annular grooves for installing the sealing ring 5 are arranged at intervals along the axial direction of the sealing sleeve 6 in the sealing section, which can improve the sealing effect. The end of the sealing sleeve 6 away from the interface end is threadedly connected with the end cover 3, and the end cover 3 is provided with a through hole for the connecting rod to pass through. The handle 2 is detachably connected to the end of the connecting rod by the handle bolt 1, which is convenient for assembly and disassembly. It is convenient to take out the sealing shaft 4, so as to replace the sealing ring 5 and ensure the sealing effect.
[0023] When in use, the multifunctional refueling valve can be installed on an existing refrigerator by removing the crude oil pressure gauge of the refrigerator (the interface end of the multifunctional refueling valve matches the connection port of the crude oil pressure gauge) and installing the sealing sleeve 6 to achieve the connection between the multifunctional refueling valve and the filter 13.
[0024] When filling, turn the handle 2 so that the right end of the sealing shaft 4 moves to position C, and the discharge filling port and the pressure detection port are in a connected state. Connect the lubricating oil supply system with the end 8, open the first valve 7, and inject lubricating oil into the sealing sleeve 6 through the lubricating oil supply system. Here, the filled lubricating oil will first enter the filter 13, and then penetrate into the first lubricating oil chamber 15, ensuring that the filter 13 is full of lubricating oil, thereby ensuring that the lubricating oil in the first lubricating oil chamber 15 can be pumped (automatically pumped by the refrigerator, this is a prior art and will not be described here) to the second lubricating oil chamber 16 for use.
[0025] Until the lubricating oil level rises to the oil mirror 17, the filling is completed, the sealing shaft 4 is operated to enter the sealing section, and the right end of the sealing shaft 4 is moved to B to block the discharge filling port to further improve the sealing. The filling valve 11 of the original lubricating oil filling interface of the refrigerator can also be opened for filling, and filling can be performed from two places to improve the filling efficiency. When filling, the oil pressure of the lubricating oil can still be measured by the oil pressure gauge 10 to fill to the appropriate oil pressure. At the same time, it is still possible to fill from the original first lubricating oil pipe 12 and the filling valve 11 to improve the filling efficiency.
[0026] When discharging, the handle 2 is turned to move the right end of the sealing shaft 4 to position C, thereby discharging the waste lubricating oil. After the discharge is completed, refilling is performed.
[0027] If maintenance is required, the handle 2 is turned to move the right end of the sealing shaft 4 to position A for maintenance. If the oil pressure gauge 10 needs to be replaced, the oil pressure valve 9 is closed to replace the oil pressure gauge 10. After the replacement is completed, the oil pressure valve 9 is opened to detect the oil pressure in real time.
Claims
1. A multifunctional refueling valve for a refrigerator, characterized in that: The invention comprises a sealing sleeve (6), the right end of which is an interface end for connecting to a connection port of a refrigerator, a threaded connection portion for connecting to a housing of the refrigerator being arranged at the interface end, the sealing sleeve (6) being composed of a sealing section and a connection section from right to left, a discharge filling port being arranged on the sealing section, the discharge filling port being connected to a refueling connection assembly, an oil pressure detection assembly being arranged between the discharge filling port and the interface end, a sealing shaft (4) for blocking the discharge filling port being sleeved inside the sealing section of the sealing sleeve (6), an internal thread for connecting to the sealing shaft (4) being arranged inside the connection section, an external thread being arranged on the sealing shaft (4) corresponding to the internal thread, a connecting rod being fixedly connected to the left end of the sealing shaft (4), and the left end of the connecting rod passing through the outside of the sealing sleeve (6).
2. The multifunctional refueling valve for refrigerator according to claim 1, characterized in that: The sealing shaft sleeve (6) is provided with a pressure detection port, and the oil pressure detection component is detachably connected to the pressure detection port.
3. The multifunctional refueling valve for refrigerator according to claim 2, characterized in that: The oil pressure detection assembly comprises an oil pressure valve (9), one end of the oil pressure valve (9) is threadedly connected to the pressure detection port, and the other end of the oil pressure valve (9) is installed with an oil pressure gauge (10).
4. The multifunctional refueling valve for refrigerator according to claim 1, characterized in that: The refueling connection assembly comprises a first valve (7), one end of which is threadedly connected to the discharge filling port, and the other end of which is provided with a terminal (8) for communicating with the lubricating oil supply system.
5. The multifunctional refueling valve for refrigerator according to claim 1, characterized in that: Annular grooves for installing sealing rings (5) are arranged at intervals in the sealing section along the axial direction of the sealing sleeve (6).
6. The multifunctional refueling valve for refrigerator according to claim 5, characterized in that: The left end of the sealing sleeve (6) is threadedly connected to an end cover (3), and the end cover (3) is provided with a through hole for the connecting rod to pass through.
7. The multifunctional refueling valve for refrigerator according to claim 6, characterized in that: A handle (2) is provided at one end of the connecting rod extending to the sealing sleeve (6), and the handle (2) is detachably connected to the end of the connecting rod via a handle bolt (1).
8. The multifunctional refueling valve for refrigerator according to claim 1, characterized in that: The threaded connection portion is an external thread.