Centrifugal filter capable of automatically detecting cleanliness of oil liquid

Abstract

The utility model discloses a centrifugal filter capable of automatically detecting cleanliness of oil, which belongs to the technical field of centrifugal filters and comprises an equipment box. The inner side of the cavity of the equipment box body is connected with a centrifugal mechanism, the centrifugal mechanism comprises a disc type centrifugal machine and a locking assembly, the locking assembly is connected to one side of the rotating input end of the disc type centrifugal machine, and the locking assembly is fixed to the rotating input end of the disc type centrifugal machine; the locking assembly comprises a transmission shaft, a connecting cavity, a locking pin and a compression spring. The transmission shaft is connected with the input end at the bottom of the disc centrifuge without forming a groove in the transmission shaft, the connecting time is saved, in addition, the quality of parts needing to be connected is guaranteed, longitudinal movement of a rotating part is effectively prevented, a rotor is limited, excessive movement is prevented, the rotating shaft rotates more stably, and the service life of the rotating shaft is prolonged. The bearing provides deformation restoring acting force for clamping the rotating piece, so that the positions of the rotor and the rotating shaft are not easy to deviate and shake.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal filters, in particular to a centrifugal filter capable of automatically detecting the cleanliness of oil. Background Art

[0002] The existing disc centrifuge uses the density difference of two immiscible materials to separate the two materials, such as solid and liquid, by centrifugal force generated by high-speed rotation of the materials. The drum component is mainly composed of a high-speed drum body, a distributor, a disc, a drum cover, a sliding piston and a locking ring. The sealing water solenoid valve is opened by the controller once a minute to replenish water. The water enters from the water chamber, passes through the sealing water hole to the space between the drum body and the large piston, and the sliding piston is lifted by the centrifugal force. Its plane cooperates with the nylon sealing ring of the drum cover to complete the sealing. At this time, the feeding work can be carried out.

[0003] For example, Chinese patent CN219252929U proposes a centrifugal filter, which relates to the technical field of lithium fluoride production. The centrifugal filter has a mounting frame, on which a placement cylinder and a filter part are arranged; the placement cylinder is used to place the material to be filtered, and the filter part can rotate on its own, and the material in the filter part can be filtered by the rotation under the action of centrifugal force; the material to be filtered is poured into the interior of the placement cylinder, and the material will flow into the interior of the filter part through the feed part, and the filter part rotates for centrifugal filtration, and when the filter part rotates, the cleaning part can be driven to rotate by the transmission part arranged, so that the cleaning part rotates to clean the inner wall of the filter cylinder, and when the filtering is completed, the baffle is opened, and then the remaining waste material can be discharged through the discharge part, so that the filter screen can be cleaned during filtering, effectively avoiding clogging of the filter hole, effectively improving the filtering efficiency, and improving the filtering quality.

[0004] However, in the above patent, the existing centrifuge motor housing and the rotor shaft will have concentricity deviation during rotation, and the relative positions are easily offset, which will not only affect the rotation effect of the rotor, but also may cause the motor to shake and rub during rotation, generating noise or even wear and damage.

[0005] Based on this, the utility model designs a centrifugal filter for automatically detecting the cleanliness of oil to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a centrifugal filter for automatically detecting the cleanliness of oil.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A centrifugal filter for automatically detecting the cleanliness of oil, comprising an equipment box;

[0009] A centrifugal mechanism is connected to the inner side of the cavity of the equipment box, and the centrifugal mechanism includes a disc centrifuge and a locking assembly for clamping and transmitting the centrifuge of the disc centrifuge, and the locking assembly is connected to one side of the rotation input end of the disc centrifuge, and the locking assembly is fixed to the rotation input end of the disc centrifuge;

[0010] The locking assembly includes a transmission shaft, a connecting cavity, a locking pin and a compression spring, wherein the locking pin is evenly fixed on the transmission shaft, a compression spring is movably installed on one side of the locking pin, a card slot is provided on the locking pin, a hole matching the locking pin is provided on the connecting cavity, and a card block matching the card slot is fixed inside the hole;

[0011] The outer side of the disc centrifuge is connected with a device for detecting the cleanliness of the oil inside the centrifugal filter after cleaning, and is connected with the liquid outlet end of the disc centrifuge.

[0012] Furthermore, the lower end of the disc centrifuge is connected to a pump group, and the pump group is connected to a pipeline assembly;

[0013] Furthermore, the pipeline assembly includes a variable flow valve circuit, a pressure measuring pipeline and a sensor valve group, the variable flow valve circuit and the pressure measuring pipeline are fixedly connected, and the pressure measuring pipeline and the sensor valve group are fixedly connected; the variable flow valve circuit is fixedly connected to the disc centrifuge.

[0014] Furthermore, the variable orifice valve is composed of a routing control valve and a pilot valve block connected to each other.

[0015] Furthermore, the sensing valve group is composed of a pressure measuring hose, a sensor valve block and a cleanliness sensor.

[0016] Furthermore, the pressure measuring hose is a long tube with a diameter of 4-5mm; two matching clamping rings are fixed between the inner side of the connecting cavity and the locking pin, and a groove is provided on the inner side of the clamping ring, a sealing ring is clamped inside the groove, and protrusions are respectively provided at both ends of the inner side of the sealing ring, and the groove on the inner side of the clamping ring and the protrusions on the two ends of the inner side of the sealing ring are clamped together.

[0017] Furthermore, the connection cavity is made of metal material and the surface is coated with plastic.

[0018] Furthermore, a long groove is formed on the top of the locking pin.

[0019] The utility model has the following technical effects:

[0020] 1. When the utility model needs to install the rotating shaft of the disc centrifuge, first use the disassembly tool to twist the locking pin. At this time, the card slot on the locking pin is released along the card block in the hole of the connecting cavity. At this time, the connecting cavity is twisted to one side so that the protrusions at both ends of the inner side of the sealing ring are in contact with the grooves on the inner side of the clamping ring and the connecting cavity. The locking pin is passed through the connecting cavity to tighten it, or a nut is used to lock it. As the locking pin is locked step by step, the inner side of the connecting cavity and the transmission shaft gradually pass through the inner groove of the clamping ring as the locking extrusion. The sealing ring is engaged, so there is no need to open a groove on the drive shaft to connect the drive shaft and the input end at the bottom of the disc centrifuge, which saves connection time. In addition, this structure can provide an excellent connection method and connection strength for any two end connection points in the equipment, ensure the quality between the parts that need to be connected, and effectively prevent the longitudinal movement of the rotating part, limit the rotor, prevent excessive movement, and make the rotation of the shaft more stable. The bearing provides a deformation recovery force to clamp the rotating part, so that the position of the rotor and the shaft is not easy to shift and shake.

[0021] 2. When the disc centrifuge needs to be cleaned after centrifugation, the utility model injects cleaning water or other fluids into the inside of the disc centrifuge through the infusion port of the disc centrifuge, and outputs from its infusion port, and the cleanliness is detected through the sensing valve group; the sensor valve block flow channel design must have no oil deposition, the oil condition sensor has limited flow rate resistance, and the oil needs to be updated in real time after entering the valve block detection cavity, while avoiding direct and rapid impact of the liquid flow on the sensor detection head to reduce the service life; the variable flow valve circuit is set to stabilize the pressure, and is placed at the front end of the oil condition sensor and the cleanliness sensor to ensure that the pressure shock of the main pilot pressure circuit caused by the vibration of the whole machine under harsh working conditions, frequent switching of the pilot pressure during operation, etc., affects the bypass detection oil circuit, and according to different use environments, it can be effectively debugged steplessly on site; the pressure measuring hose is set to increase the pressure loss along the way, stabilize the bypass flow, and effectively ensure the establishment of the pilot main oil circuit pressure for effective testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 The utility model is a centrifugal filter for automatically detecting the cleanliness of oil. Figure 1 ;

[0024] Figure 2This is a front view of a centrifugal filter for automatically detecting the cleanliness of oil according to the utility model;

[0025] Figure 3 It is a structural schematic diagram of the centrifugal mechanism of the utility model;

[0026] Figure 4 A half-section diagram of the centrifugal mechanism of the utility model;

[0027] Figure 5 It is a partial structural schematic diagram of the centrifugal mechanism of the utility model.

[0028] The numbers in the figure represent:

[0029] 1. Equipment housing; 2. Centrifugal mechanism; 21. Disc centrifuge; 22. Pump assembly; 23. Pipeline assembly; 24. Locking assembly; 25. Drive shaft; 26. Connecting cavity; 27. Locking pin; 28. Compression spring; 231. Variable orifice valve circuit; 232. Pressure measuring pipeline; 233. Sensing valve group. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The utility model is further described below in conjunction with embodiments.

[0032] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0033] In some embodiments, please refer to the attached instructions. Figure 1-5 A centrifugal filter for automatically detecting the cleanliness of oil, comprising an equipment box 1, a centrifugal mechanism 2 is connected to the inner side of the cavity of the equipment box 1, the centrifugal mechanism 2 comprises a disc centrifuge 21 and a locking assembly 24 for providing clamping transmission for the centrifuge of the disc centrifuge 21, the locking assembly 24 is connected to one side of the rotation input end of the disc centrifuge 21, and the locking assembly 24 is fixed to the rotation input end of the disc centrifuge 21;

[0034] The locking assembly 24 includes a transmission shaft 25, a connecting cavity 26, a locking pin 27 and a compression spring 28. The locking pin 27 is evenly fixed on the transmission shaft 25. A compression spring 28 is movably installed on one side of the locking pin 27. A card slot is provided on the locking pin 27. A hole matching the locking pin 27 is provided on the connecting cavity 26, and a card block matching the card slot is fixed inside the hole.

[0035] The outer side of the disc centrifuge 21 is connected with a device 235 for detecting the cleanliness of the oil inside the centrifugal filter after cleaning, and 235 is connected to the liquid outlet end of the disc centrifuge 21;

[0036] The lower end of the disc centrifuge 21 is connected to a pump group 22, and the pump group 22 is connected to a pipeline assembly 23;

[0037] The pipeline assembly 23 includes a variable flow valve circuit 231, a pressure measuring pipeline 232 and a sensor valve group 233. The variable flow valve circuit 231 and the pressure measuring pipeline 232 are fixedly connected, and the pressure measuring pipeline 232 and the sensor valve group 233 are fixedly connected; the variable flow valve circuit 231 is fixedly connected to the disc centrifuge 21;

[0038] The variable flow valve circuit 231 is composed of a control valve and a pilot valve block connected to each other, and the sensor valve group 233 is composed of a pressure measuring hose, a sensor valve block and a cleanliness sensor;

[0039] The pressure measuring hose is a long tube with a diameter of 4-5mm; two mutually matching clamps are fixed between the inner side of the connecting cavity 26 and the locking pin 27, and a groove is provided on the inner side of the clamp, a sealing ring is clamped inside the groove, and protrusions are provided at both ends of the inner side of the sealing ring, and the groove on the inner side of the clamp and the protrusions at both ends of the inner side of the sealing ring are clamped, the connecting cavity 26 is made of metal material, and the surface is plastic-coated to improve the corrosion resistance and wear resistance of the connecting cavity 26, and a long groove is provided on the top of the locking pin 27;

[0040] When the rotating shaft of the disc centrifuge 21 needs to be installed, first use a disassembly tool to twist the locking pin 27. At this time, the card slot on the locking pin 27 is released along the card block in the hole of the connecting cavity 26. At this time, the connecting cavity 26 is twisted to one side so that the protrusions at both ends of the inner side of the sealing ring are in contact with the grooves on the inner side of the card ring and the connecting cavity 26. The locking pin 27 is passed through the connecting cavity 26 to tighten it, or a nut is used to lock it. As the locking pin 27 is locked step by step, the inner side of the connecting cavity 26 and the transmission shaft 25 are gradually squeezed through the card slot. The sealing ring of the inner groove of the ring is meshed, so there is no need to open a groove on the transmission shaft 25 to connect the transmission shaft 25 and the input end at the bottom of the disc centrifuge 21, which saves connection time. In addition, this structure can provide an excellent connection method and connection strength for any two end connection points in the device, ensure the quality between the parts that need to be connected, and effectively prevent the longitudinal movement of the rotating part, limit the rotor, prevent excessive movement, make the rotation of the shaft more stable, and the bearing provides a deformation recovery force for clamping the rotating part, so that the position of the rotor and the shaft is not easy to deviate and shake;

[0041] When the disc centrifuge 21 needs to be cleaned after centrifugation, the cleaning water or other fluid is injected into the inside of the disc centrifuge 21 through the infusion port of the disc centrifuge 21, and the fluid is outputted from the infusion port, and the cleanliness is detected through the sensing valve group 233;

[0042] The flow channel design of the sensor valve block must be free of oil deposits. The oil condition sensor has limited flow rate resistance. After the oil enters the valve block detection cavity, it needs to be updated in real time. At the same time, it is necessary to avoid direct and rapid impact of the liquid flow on the sensor detection head to reduce the service life;

[0043] By setting a variable orifice valve circuit 231 for voltage stabilization and placing it at the front end of the oil condition sensor and the cleanliness sensor, it is ensured that the pressure shock of the main pilot pressure circuit caused by the vibration of the whole machine under harsh working conditions and the frequent switching of the pilot pressure during operation will not affect the bypass detection oil circuit. According to different use environments, effective stepless on-site debugging can be achieved;

[0044] The purpose of setting up a pressure measuring hose is to increase the pressure loss along the way, stabilize the bypass flow, and effectively ensure the establishment of the pilot main oil circuit pressure for effective testing.

[0045] The block inside the hole of the connecting cavity 26 and the slot on the locking pin 27 are staggered. The compression spring 28 is pressed to one side by a tool, so that the slot on the locking pin 27 and the block inside the hole of the connecting cavity 26 are disengaged and meshed, and the locking pin 27 is rotated to be pulled out.

[0046] The sensor valve block mentioned above is an oil condition sensor;

[0047] Oil condition sensors and cleanliness sensors are existing products and can be obtained through selection. The measurement environment of cleanliness sensors is inconsistent in each production, so the oil cleanliness detection environment flow is sensitive and directly determines the accuracy of the measurement results. The general requirement is 0.01-0.3L / min.

[0048] 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. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A centrifugal filter for automatically detecting the cleanliness of oil, comprising an equipment box (1), characterized in that: A centrifugal mechanism (2) is connected to the inner side of the cavity of the equipment housing (1), wherein the centrifugal mechanism (2) comprises a disc centrifuge (21) and a locking assembly (24) for providing clamping transmission for the centrifuge of the disc centrifuge (21), wherein the locking assembly (24) is connected to one side of the rotation input end of the disc centrifuge (21), and the locking assembly (24) is fixed to the rotation input end of the disc centrifuge (21); The locking assembly (24) comprises a transmission shaft (25), a connecting cavity (26), a locking pin (27) and a compression spring (28); the locking pin (27) is evenly fixed on the transmission shaft (25); a compression spring (28) is movably mounted on one side of the locking pin (27); a card slot is provided on the locking pin (27); a hole matching the locking pin (27) is provided on the connecting cavity (26); and a card block matching the card slot is fixed inside the hole; The outer side of the disc centrifuge (21) is connected with a device (235) for detecting the cleanliness of the oil inside the centrifugal filter after cleaning, and the device (235) is connected to the liquid outlet end of the disc centrifuge (21).

2. The centrifugal filter for automatically detecting oil cleanliness according to claim 1, characterized in that: The lower end of the disc centrifuge (21) is connected to a pump group (22), and the pump group (22) is connected to a pipeline assembly (23).

3. The centrifugal filter for automatically detecting oil cleanliness according to claim 2, characterized in that: The pipeline assembly (23) comprises a variable flow valve circuit (231), a pressure measuring pipeline (232) and a sensing valve group (233); the variable flow valve circuit (231) and the pressure measuring pipeline (232) are fixedly connected, and the pressure measuring pipeline (232) and the sensing valve group (233) are fixedly connected; the variable flow valve circuit (231) is fixedly connected to the disc centrifuge (21).

4. The centrifugal filter for automatically detecting oil cleanliness according to claim 3, characterized in that: The variable flow orifice valve circuit (231) is composed of a control valve and a pilot valve block connected to each other.

5. The centrifugal filter for automatically detecting the cleanliness of oil according to claim 4, characterized in that: The sensing valve group (233) is composed of a pressure measuring hose, a sensor valve block and a cleanliness sensor.

6. The centrifugal filter for automatically detecting the cleanliness of oil according to claim 5, characterized in that: The pressure measuring hose is a long tube with a diameter of 4-5 mm; two mutually matching clamping rings are fixed between the inner side of the connecting cavity (26) and the locking pin (27), and a groove is provided on the inner side of the clamping ring, a sealing ring is clamped inside the groove, and protrusions are respectively provided at the two ends of the inner side of the sealing ring, and the groove on the inner side of the clamping ring and the protrusions at the two ends of the inner side of the sealing ring are clamped.

7. The centrifugal filter for automatically detecting the cleanliness of oil according to claim 6, characterized in that: The connecting cavity (26) is made of metal material and has a plastic-coated surface.

8. The centrifugal filter for automatically detecting the cleanliness of oil according to claim 7, characterized in that: The top of the locking pin (27) is provided with a long slot.

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