Freeze dryer oil component improvement device

Abstract

The utility model relates to a freeze dryer oil component improvement device which comprises an oil component cylinder, an air inlet pipe and an air outlet pipe which extend into the oil component cylinder are arranged at the upper end of the oil component cylinder, filter screens are arranged at the bottoms of the air inlet pipe and the air outlet pipe, an oil return pipe is arranged in the oil component cylinder, and one end of the oil return pipe extends out of the oil component cylinder to be connected with an oil tank of a compressor. One end of the oil return pipe is provided with an oil return valve, the other end of the oil return pipe is provided with an oil return valve, the bottom of the oil return valve is provided with a connecting plate, a connecting hole of the connecting plate is horizontally provided with a limiting rod, the limiting rod is provided with a magnet, the oil separation cylinder is provided with an auxiliary oil return module, and the auxiliary oil return module is connected with an oil tank of the compressor. Through the arrangement of the limiting rod, the magnet and the filter screen, the oil return valve can be effectively prevented from breaking down, oil is continuously supplied to the oil tank of the compressor, if the oil return valve breaks down, oil can be supplied through the auxiliary oil return module, and oil supply of the compressor is doubly guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-gas separation, and in particular relates to an oil improvement device for a freeze dryer. Background Art

[0002] Oil separation is the process of separating Freon from lubricating oil during the operation of the freeze dryer, and returning the lubricating oil to the refrigeration compressor device to ensure that the refrigeration compressor has sufficient lubrication. However, the return oil valve of the existing oil separation device is prone to blockage and damage, which causes the compressor to fail to receive lubricating oil in time. However, the oil separation device cannot be replaced and repaired during the operation of the equipment, resulting in the compressor always running in a non-lubricated state, which affects the service life of the compressor. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide a freeze dryer oil improvement device to solve the above technical problems.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0007] A freeze dryer oil improvement device comprises an oil separator cylinder, wherein the upper end of the oil separator cylinder is provided with an air inlet pipe and an air outlet pipe extending into the oil separator cylinder, the bottom of the air inlet pipe and the air outlet pipe are provided with a filter screen, an oil return pipe is provided in the oil separator cylinder, one end of the oil return pipe extends out of the oil separator cylinder and is connected to the oil tank of the compressor, an oil return valve is provided at the other end of the oil return pipe, a connecting plate is provided at the bottom of the oil return valve, a limit rod is horizontally provided on the connecting hole of the connecting plate, a magnet is provided on the limit rod, an auxiliary oil return module is provided on the oil separator cylinder, and the auxiliary oil return module is connected to the oil tank of the compressor.

[0008] Preferably, the filter screen is made of stainless steel, and the bottom of the filter screen gradually shrinks to form a filter tip.

[0009] Preferably, an oil baffle is obliquely provided at the bottom of the filter screen of the air outlet pipe.

[0010] Preferably, the oil return valve is a float type automatic oil return valve.

[0011] Preferably, the length of the limiting rod is 1-5 cm shorter than the diameter of the inner wall of the oil separator cylinder.

[0012] Preferably, the auxiliary oil return module includes an auxiliary oil return pipe, one end of the auxiliary oil return pipe is connected to the lubricating oil at the bottom of the oil separation cylinder, the other end of the auxiliary oil return pipe is connected to a connecting pipe through a solenoid valve, the connecting pipe is connected to the oil return pipe, a second manual valve is provided on the connecting pipe, a first manual valve is provided on the auxiliary oil return pipe, and a pressure sensor is provided on the oil pump, which transmits a signal to the solenoid valve to control the opening and closing of the solenoid valve.

[0013] Beneficial effects:

[0014] The utility model can effectively prevent the oil return valve from malfunctioning through the arrangement of the limit rod, the magnet and the filter screen, and continuously supply oil to the oil tank of the compressor. If the oil return valve fails, oil can be supplied through the auxiliary oil return module, thereby doubly ensuring the oil supply of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a diagram of the installation structure of a limit rod according to an embodiment of the utility model;

[0017] Figure 3 It is a top view of the installation of a limit rod according to an embodiment of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clear, the following is a detailed description of the present invention in conjunction with the specific implementation methods and with reference to the attached drawings. Figure 1-3 , the utility model is further described in detail. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] The utility model provides an oil separation improvement device for a freeze dryer, comprising an oil separation cylinder 15, the upper end of the oil separation cylinder 15 is provided with an air inlet pipe 16 and an air outlet pipe 17 extending into the oil separation cylinder, the bottom of the air inlet pipe 16 and the air outlet pipe 17 is provided with a filter screen 14, the material of the filter screen 14 is stainless steel, the bottom of the filter screen 14 gradually shrinks to form a filter tip, which is convenient for lubricating oil to drip into the oil separation cylinder 15. The setting of the filter screen 14 can prevent impurities such as particles from entering the oil separation cylinder 15, prevent the oil return needle valve core of the oil return valve from being blocked, and also prevent particles from blocking the float of the float type automatic oil return valve, causing oil return failure.

[0020] An oil baffle plate 13 is obliquely arranged at the bottom of the filter screen 14 of the air outlet pipe 17. The arrangement of the oil baffle plate can increase the separation time and distance of the lubricating oil and the Freon, and improve the separation rate of the Freon and the lubricating oil.

[0021] An oil return pipe 12 is arranged in the oil separator 15, one end of the oil return pipe 12 extends out of the oil separator 15 and is connected to the oil tank 1 of the compressor, and an oil return valve 11 is arranged at the other end of the oil return pipe 12, and the oil return valve 11 is a float type automatic oil return valve. Through the setting of the float type automatic oil return valve, when there is too much lubricating oil in the oil separator 15, the float rises to cause the oil return valve to open, and the pressure generated by the change of the Freon itself causes the lubricating oil to flow into the oil tank 1 of the compressor through the oil return pipe, ensuring that there is always lubricating oil in the oil tank of the compressor.

[0022] The bottom of the oil return valve 11 is provided with a connecting plate 8, and a limit rod 9 is horizontally provided on the connecting hole 20 of the connecting plate 8. The setting of the limit rod 9 can effectively ensure that the oil return valve is located at the axial position of the oil separator cylinder, and prevent the collision between the floating ball in the middle layer and the inner wall of the oil separator cylinder due to the vibration of the equipment and the change of temperature, which may cause the oil return valve 1 to fail and fail to provide lubricating oil to the oil tank of the compressor in time. The limit rod 9 is provided with a magnet 10, and the setting of the magnet can absorb the rigid particles generated during the wear of the equipment, prevent the valve core of the float type automatic oil return valve from being blocked or the float from being stuck, and reduce the failure rate of the float type automatic oil return valve.

[0023] The length of the limit rod 9 is 1-5 cm shorter than the diameter of the inner wall of the oil separator 15. This facilitates the installation of the limit rod 9 and also prevents the oil return valve from shaking.

[0024] The oil separator 15 is provided with an auxiliary oil return module, which is connected to the oil tank 1 of the compressor. The auxiliary oil return module includes an auxiliary oil return pipe 6, one end of which is connected to the lubricating oil at the bottom of the oil separator 15, and the other end of which is connected to a connecting pipe 19 through a solenoid valve 5, and the connecting pipe 19 is connected to the oil return pipe 12, and a second manual valve 18 is provided on the connecting pipe 19, and a first manual valve 7 is provided on the auxiliary oil return pipe 6. The arrangement of the first manual valve 7 and the second manual valve 18 can facilitate the replacement of the solenoid valve when it fails, and a pressure sensor 3 is provided on the oil pump 2, and the pressure sensor 3 transmits a signal to the solenoid valve 5 to control the opening and closing of the solenoid valve.

[0025] When the pressure sensor 3 detects that the pressure of the oil pump 2 is too low, the content of lubricating oil in the oil tank of the compressor is relatively low. Therefore, it can be judged that the return oil valve is faulty. When the pressure sensor is lower than a specific value, the signal is transmitted to the solenoid valve, and the solenoid valve opens. The pressure in the oil separator will cause the lubricating oil to flow along the auxiliary oil return pipe and the connecting pipe into the oil tank of the compressor. When the pressure sensor detects that the pressure returns to normal, the solenoid valve closes. This reciprocating cycle can ensure that there is always lubricating oil in the oil tank of the compressor when the return oil valve fails, thereby extending the service life of the compressor.

[0026] The utility model can effectively prevent the oil return valve from malfunctioning through the arrangement of the limit rod, the magnet and the filter screen, and continuously supply oil to the oil tank of the compressor. If the oil return valve fails, oil can be supplied through the auxiliary oil return module, thereby doubly ensuring the oil supply of the compressor.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A freeze dryer oil improvement device, characterized in that: It includes an oil separator cylinder, the upper end of which is provided with an air inlet pipe and an air outlet pipe extending into the oil separator cylinder, the bottom of which is provided with a filter screen, an oil return pipe is provided in the oil separator cylinder, one end of the oil return pipe extends out of the oil separator cylinder and is connected to the oil tank of the compressor, an oil return valve is provided at the other end of the oil return pipe, a connecting plate is provided at the bottom of the oil return valve, a limit rod is horizontally provided on the connecting hole of the connecting plate, a magnet is provided on the limit rod, an auxiliary oil return module is provided on the oil separator cylinder, and the auxiliary oil return module is connected to the oil tank of the compressor.

2. The freeze dryer oil improvement device according to claim 1, characterized in that: The filter screen is made of stainless steel, and the bottom of the filter screen gradually shrinks to form a filter tip.

3. A freeze dryer oil improvement device according to claim 1 or 2, characterized in that: An oil baffle is obliquely provided at the bottom of the filter screen of the air outlet pipe.

4. The freeze dryer oil improvement device according to claim 1, characterized in that: The oil return valve is a float type automatic oil return valve.

5. The freeze dryer oil improvement device according to claim 1, characterized in that: The length of the limiting rod is 1-5 cm shorter than the diameter of the inner wall of the oil separator cylinder.

6. The freeze dryer oil improvement device according to claim 1, characterized in that: The auxiliary oil return module includes an auxiliary oil return pipe, one end of which is connected to the lubricating oil at the bottom of the oil separator, and the other end of the auxiliary oil return pipe is connected to a connecting pipe through a solenoid valve, and the connecting pipe is connected to the oil return pipe. A second manual valve is provided on the connecting pipe, a first manual valve is provided on the auxiliary oil return pipe, and a pressure sensor is provided on the oil pump, which transmits a signal to the solenoid valve to control the opening and closing of the solenoid valve.

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