Grease suction device and bearing waste oil recovery system
By designing a liposuction device, the oil discharge valve core assembly is reciprocated in the inner cavity by using the pressure of hydraulic oil and reset components, the problem of difficulty in discharge of waste grease in the bearing is solved, and the smooth injection of new grease is achieved, which improves the lubrication effect and equipment reliability.
Patent Information
- Application Number
- CN202422607738.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In the prior art, waste grease in the bearing is difficult to discharge in time, resulting in the inability to inject new grease smoothly, affecting the lubrication effect and aggravation.
A liposuction device is designed, including an inner cavity surrounded by the valve body, a waste oil sealing seat and a hydraulic oil sealing seat. A hydraulic valve core is provided at the right end of the inner cavity. An oil drain valve core assembly is provided in the waste oil collection chamber. The oil drain valve core assembly and the hydraulic valve core are reciprocated in the inner cavity through the pressure and reset components of the hydraulic oil to realize the absorption and discharge of waste grease.
The timely discharge of waste grease is achieved, the smooth injection of new grease is ensured, the bearing lubrication effect is ensured, the cost is reduced and the equipment reliability is improved.
Smart Images
Figure CN223121154U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of bearing lubrication, and in particular, to a grease extractor and a bearing waste oil recovery system. Background Art
[0002] Effective lubrication of bearings can reduce frictional wear between relatively moving parts and reduce the movement resistance. However, as the equipment runs continuously, the lubricating grease in the bearings is repeatedly rolled by external forces, and the base oil is separated out to participate in lubrication, which will cause oxidation and deterioration, the lubrication performance will decline, the lubricating grease will harden, saponify, and even dry up. At the same time, during the operation of the bearings, wear particles will be generated and mixed into the lubricating grease, which will also cause deterioration, hardening and reduce the lubrication effect.
[0003] Generally, in order to ensure good lubrication, it is necessary to regularly replenish new lubricating grease into the inner cavity of the bearing. However, when adding new lubricating grease, if the old lubricating grease cannot be discharged in time, it will occupy the space of the new lubricating grease, and the renewal of the lubricating grease cannot be achieved, which will deteriorate the lubrication environment, affect the lubrication effect, and even exacerbate the wear of the bearings. Therefore, how to discharge the waste lubricating grease in time and ensure the smooth injection of new lubricating grease is a technical problem to be solved urgently. Summary of the Utility Model
[0004] The purpose of the present disclosure is to provide a grease extractor that can timely discharge the waste lubricating grease in the bearing, ensure the smooth injection of new grease, realize the normal renewal of the lubricating grease, and form an effective lubricating oil film.
[0005] To achieve the above object, the present disclosure provides a grease extractor, including a valve body. Waste oil sealing seats and hydraulic oil sealing seats are respectively provided at the left and right ends of the valve body to jointly enclose an inner cavity. A hydraulic valve core is provided at the right end of the inner cavity. A hydraulic cavity is formed between the right end of the hydraulic valve core and the hydraulic oil sealing seat, and a waste oil collection cavity is formed between the left end and the waste oil sealing seat.
[0006] A drain valve core assembly is provided in the waste oil collection cavity. The drain valve core assembly includes a drain valve core and divides the waste oil collection cavity into a left cavity and a right cavity. The drain valve core is provided with a valve core drain hole communicating with the right cavity, and a sealing assembly for selectively communicating the left cavity and the right cavity is provided inside. Hydraulic oil inlets for communicating with the hydraulic cavity, an oil suction port for communicating with the right cavity, and a drain port for communicating with the left cavity are respectively opened on the side wall of the valve body.
[0007] Wherein, a reset assembly is provided between the left end of the drain valve core and the waste oil sealing seat, and the right end is connected to the hydraulic valve core, so that the drain valve core assembly and the hydraulic valve core can reciprocate in the inner cavity, having a left extreme position and a right extreme position. When in the right extreme position, the oil suction port is opened.
[0008] Optionally, the reset assembly includes a reset spring and a spring seat connected to the left end of the oil drain valve core. The left end of the reset spring abuts against the waste oil seal seat, and the right end abuts against the spring seat.
[0009] Optionally, the sealing assembly includes a seal and a sealing spring. The seal includes a sealing rod and a sealing head. The sealing spring is sleeved on the sealing rod, with its left end abutting against the reset assembly and its right end abutting against the sealing head. The sealing head is configured as a conical sealing head with a gradually decreasing diameter towards the sealing surface of the oil drain valve core.
[0010] Optionally, a sealing groove for installing an oil drain valve core sealing ring is provided on the inner cylindrical surface of the waste oil collection cavity, and the oil drain valve core sealing ring separates the left cavity and the right cavity.
[0011] Optionally, a hydraulic valve core sealing ring is provided between the cylindrical surface of the right section of the hydraulic valve core and the inner cylindrical surface of the right section of the inner cavity. The hydraulic valve core sealing ring is located between the oil suction port and the hydraulic oil inlet.
[0012] Optionally, the oil drain port is adjacent to the waste oil seal seat, the hydraulic oil inlet is adjacent to the hydraulic oil seal seat, and the oil suction port is arranged between the oil drain port and the hydraulic oil inlet.
[0013] Optionally, a limiting step facing the right is provided on the inner wall of the right cavity. When in the left extreme limit position, the hydraulic valve core abuts against the limiting step.
[0014] Optionally, the valve head of the oil drain valve core is configured as a T-shaped head, and the left end of the hydraulic valve core is configured as a T-shaped groove matching the T-shaped head.
[0015] Optionally, a check valve with unidirectional oil discharge is provided at the oil drain port.
[0016] The present disclosure also provides a bearing waste oil recovery system, including a hydraulic system, a bearing, and a waste oil recovery device, further including the above-mentioned oil suction device. The hydraulic oil inlet is connected to the hydraulic system, the oil suction port is communicated with the grease discharge port of the bearing, and the oil drain port is communicated with the waste oil recovery device.
[0017] Through the above technical solution, when new lubricating grease needs to be injected into the bearing, the oil suction device of the present disclosure can be started. Under the action of the pressure generated by the hydraulic oil and the reset assembly, the oil drain valve core assembly and the hydraulic valve core reciprocate in the inner cavity. During the reciprocating movement, the waste oil collection cavity sucks waste lubricating grease from the oil suction port and discharges the waste lubricating grease from the oil drain port to complete the discharge and collection of the waste lubricating grease.
[0018] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are provided to further understand the present disclosure and form a part of the specification. They are used together with the following detailed implementation manners to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0020] Figure 1 is a schematic structural diagram of a liposuction device at the left extreme limit position provided according to the specific implementation manner of the present disclosure;
[0021] Figure 2 is a schematic structural diagram of a liposuction device at the right extreme limit position provided according to the specific implementation manner of the present disclosure.
[0022] DESCRIPTION OF REFERENCE NUMERALS
[0023] 1 - valve body, 11 waste oil seal seat, 12 - hydraulic oil seal seat, 13 - hydraulic chamber, 14 - right chamber, 141 - limit step, 15 - left chamber, 16 - seal groove, 2 - hydraulic valve core, 21 - hydraulic valve core sealing ring, 3 - oil drain valve core assembly, 31 - oil drain valve core, 311 - valve core oil drain hole, 32 - sealing assembly, 321 - seal, 3211 - seal rod, 3212 - seal head, 322 - seal spring, 33 - oil drain valve core sealing ring, 101 - hydraulic oil inlet, 102 - oil suction port, 103 - oil drain port, 4 - reset assembly, 41 - reset spring, 42 - spring seat. DETAILED IMPLEMENTATION MANNERS
[0024] The following further details the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and understanding the present disclosure, and are not used to limit the present disclosure.
[0025] In the present disclosure, unless otherwise stated, the orientation terms such as "upper, lower, left, right" generally refer to the up, down, left, and right directions shown in the drawings of the drawings, and "inner, outer" are defined for the inner and outer contours of each component.
[0026] According to the specific implementation manner of the present disclosure, a liposuction device is provided. Referring to Figure 1 and Figure 2 as shown, it includes a valve body 1. Waste oil seal seats 11 and hydraulic oil seal seats 12 are respectively provided at the left and right ends of the valve body 1 to jointly enclose an inner cavity. A hydraulic valve core 2 is provided at the right end of the inner cavity. A hydraulic chamber 13 is formed between the right end of the hydraulic valve core 2 and the hydraulic oil seal seat 12, and a waste oil collection chamber is formed between the left end and the waste oil seal seat 11.
[0027] An oil drain valve core assembly 3 is arranged in the waste oil collection cavity. The oil drain valve core assembly 3 includes an oil drain valve core 31 and divides the waste oil collection cavity into a left cavity 15 and a right cavity 14. The oil drain valve core 31 is provided with a valve core oil drain hole 311 communicating with the right cavity 14, and a sealing assembly 32 for selectively communicating the left cavity 15 and the right cavity 14 is arranged inside. Side walls of the valve body 1 are respectively provided with a hydraulic oil inlet 101 for communicating with the hydraulic cavity 13, an oil suction port 102 for communicating with the right cavity 14, and an oil drain port 103 for communicating with the left cavity 15.
[0028] Wherein, a reset assembly 4 is arranged between the left end of the oil drain valve core 31 and the waste oil seal seat 11, and the right end is connected to the hydraulic valve core 2, so that the oil drain valve core assembly 3 and the hydraulic valve core 2 can reciprocate in the inner cavity, having a left extreme position and a right extreme position. When in the right extreme position, the oil suction port 102 is opened.
[0029] Reference Figure 2 Referring to the position shown, the initial state of the fat suction device provided by the present disclosure is at the right extreme position. Among them, the hydraulic oil inlet 101 is connected to the hydraulic system, the oil suction port 102 communicates with the grease drain port of the bearing, the oil drain port 103 can communicate with the waste oil recovery device, and the hydraulic valve core 2 and the oil drain valve core assembly 3 are slidably connected to the inner cavity. The specific operation process is as follows: First, through the operation of the hydraulic system, hydraulic oil with pressure is sent into the hydraulic cavity 13, thereby pushing the hydraulic valve core 2 and the oil drain valve core assembly 3 to move leftward simultaneously. At the same time, the waste grease inside the right cavity 14 is also pushed leftward. Among them, during the movement, the waste grease inside the right cavity 14 generates sufficient pressure due to being squeezed to push the sealing assembly 32 to move leftward, separating it from the sealing surface of the oil drain valve core 31, communicating the left cavity 15 and the right cavity 14. Then, the waste grease inside the right cavity 14 smoothly enters the left cavity 15 and finally enters the waste oil recovery device through the oil drain port 103, realizing the discharge and collection of the waste grease.
[0030] After the oil drain valve core assembly 3 runs to the left extreme limit position, the hydraulic system can continue to operate for 1 minute for pressure holding. After the pressure holding is completed, the hydraulic system stops supplying oil, and the pipeline pressure connecting the liposuction device of the present disclosure drops to zero. The sealing assembly 32 starts to move to the right to closely contact the sealing surface of the oil drain valve core 2 to achieve sealing, thereby blocking the connection between the left chamber 15 and the right chamber 14 in the waste oil collection chamber; the reset assembly 4 then pushes the oil drain valve core assembly 3 and the hydraulic valve core 2 to move together from the left extreme limit position to the right extreme limit position, thereby forming a vacuum negative pressure in the right chamber 14. When the left end of the hydraulic valve core 2 crosses the oil suction port 102, under the action of the vacuum negative pressure, the old waste lubricating grease at the grease drain port of the bearing is sucked into the right chamber 14 through the oil suction port 102 until the pressure at the oil suction port 102 balances the resistance generated by the flow of the waste lubricating grease and the vacuum negative pressure in the right chamber 14, and the discharge of the old waste lubricating grease inside the bearing is completed.
[0031] Through the above technical solution, when new lubricating grease needs to be injected into the bearing, the liposuction device of the present disclosure can be started. Under the action of the pressure generated by the hydraulic oil and the reset assembly 4, the oil drain valve core assembly 3 and the hydraulic valve core 2 reciprocate in the inner cavity. During the reciprocating movement, the waste oil collection chamber sucks the waste lubricating grease through the oil suction port 102 and discharges the waste lubricating grease through the oil drain port 103 to complete the discharge and collection of the waste lubricating grease. And the liposuction device of the present disclosure adopts a single-line structure, which has a simple structure, high reliability, and reduces costs.
[0032] Optionally, a one-way valve for one-way oil discharge is provided on the oil drain port 103, so that the waste lubricating grease can only flow from right to left in the left chamber and cannot flow reversely, which can better ensure the vacuum degree.
[0033] Among them, the reset assembly 4 can be of any suitable structure. In the specific embodiment of the present disclosure, refer to Figure 1 and Figure 2 As shown, the reset assembly 4 includes a reset spring 41 and a spring seat 42 connected to the left end of the oil drain valve core 31. The left end of the reset spring 41 abuts against the waste oil sealing seat 11, and the right end abuts against the spring seat 42. In this way, through the push of the reset spring 41, the hydraulic valve core 2 and the oil drain valve core assembly 3 reach the right extreme limit position from the left extreme limit position, so that the oil suction port 102 is opened. In other embodiments, the reset assembly can also adopt a push rod, and the movement of the hydraulic valve core and the oil drain valve core assembly is realized by pushing the push rod to move to the right. The present disclosure does not limit this.
[0034] In the specific embodiment of the present disclosure, refer to Figure 1As shown, the sealing assembly 32 includes a seal 321 and a sealing spring 322. The seal 321 includes a sealing rod 3211 and a sealing head 3212. The sealing spring 322 is sleeved on the sealing rod 3211, with its left end abutted against the reset assembly 4 and its right end abutted against the sealing head 3212. The sealing head 3212 is configured as a conical sealing head with a gradually decreasing diameter towards the sealing surface of the oil drain valve core 31.
[0035] That is, the connection or disconnection between the left cavity 15 and the right cavity 14 is controlled by the separation or compression of the conical sealing head from the sealing surface of the oil drain valve core 31. When the hydraulic valve core 2 and the oil drain valve core assembly 3 move leftward, the waste lubricating grease is extruded to generate sufficient pressure to overcome the spring force of the sealing spring 322, pushing the conical sealing head 3212 to move leftward to separate from the sealing surface of the oil drain valve core 21, realizing the connection between the left cavity 15 and the right cavity 14; when the hydraulic system stops working, the sealing spring 322 will push the conical sealing head to move rightward, causing the conical sealing head to be elastically deformed by squeezing against the sealing surface of the oil drain valve core 31, achieving sealing and blocking the connection between the left and right chambers inside the waste oil collection cavity.
[0036] In a specific embodiment of the present disclosure, refer to Figure 1 As shown, a sealing groove 16 for installing the oil drain valve core sealing ring 33 is provided on the inner cylindrical surface of the waste oil collection cavity. The oil drain valve core sealing ring 33 separates the left cavity 15 and the right cavity 14. Refer to Figure 1 As shown, the cylindrical surface of the left section of the oil drain valve core 21 and the inner cylindrical surface of the left section of the inner cavity achieve sliding seal fit through the oil drain valve core sealing ring 33.
[0037] In a specific embodiment of the present disclosure, refer to Figure 1 and Figure 2 As shown, a hydraulic valve core sealing ring 21 is provided between the cylindrical surface of the right section of the hydraulic valve core 2 and the inner cylindrical surface of the right section of the inner cavity, realizing the sliding seal fit between the hydraulic valve core and the inner cavity; the hydraulic valve core sealing ring 21 is located between the oil suction port 102 and the hydraulic oil inlet 101, preventing the mutual infiltration between the hydraulic oil and the waste lubricating grease and ensuring the sealing reliability.
[0038] Refer to Figure 2 As shown, in a specific embodiment of the present disclosure, the oil drain port 103 is adjacent to the waste oil sealing seat 11, the hydraulic oil inlet 101 is adjacent to the hydraulic oil sealing seat 12, and the oil suction port 102 is arranged between the oil drain port 103 and the hydraulic oil inlet 101. Specifically, considering the spatial layout, refer to Figure 1As shown, the oil suction port 102 and the oil discharge port 103 are arranged on the upper side wall of the valve body 1, and the hydraulic oil inlet 101 is arranged on the lower side wall; and optionally, an oil discharge port with a diameter of 3-4 mm can be arranged 3 mm from the right end face of the waste oil seal seat 11 to ensure the smooth discharge of waste grease. Among them, in the specific embodiments of the present disclosure, both the waste oil seal seat 11 and the hydraulic oil seal seat 12 can be configured as sealed plugs.
[0039] In the specific embodiments of the present disclosure, with reference to Figure 1 As shown, a limiting step 141 facing the right is provided on the inner wall of the right cavity 14. When in the left extreme limit position, the hydraulic valve core 2 abuts against the limiting step 141. Optionally, the maximum diameter ratio of the hydraulic valve core 2 to the oil discharge valve core 31 can be 3:1 (i.e., the diameter at the sealed mating part of the inner cavity).
[0040] Furthermore, in the specific embodiments of the present disclosure, with reference to Figure 1 As shown, the valve head of the oil discharge valve core 31 is configured as a T-shaped head, and the left end of the hydraulic valve core 2 is configured as a T-shaped groove matching the T-shaped head, so as to realize the insertion of the oil discharge valve core 31 onto the hydraulic valve core 2 and reciprocate with the hydraulic valve core 2.
[0041] The present disclosure also provides a bearing waste oil recovery system, including a hydraulic system, a bearing and a waste oil recovery device, which further includes the above-mentioned oil suction device. The hydraulic oil inlet 101 is connected to the hydraulic system, the oil suction port 102 is communicated with the grease discharge port of the bearing, and the oil discharge port 103 is communicated with the waste oil recovery device.
[0042] During the bearing lubrication process, waste grease that has lost its lubricating effect will be generated and pushed to the grease discharge port for discharge by the pressure generated during the bearing operation. In order to make room for the newly replenished grease and facilitate the replenishment of grease, the waste grease can be sucked out by the oil suction device of the present disclosure, so as to realize the smooth injection of the new grease and finally ensure the lubricating effect of the bearing.
[0043] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0044] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.
[0045] In addition, any combination can be made among various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should equally be regarded as the content disclosed by the present disclosure.
Claims
1. A liposuction device, characterized in that, It includes a valve body. Waste oil sealing seats and hydraulic oil sealing seats are respectively provided at the left and right ends of the valve body to jointly enclose an inner cavity. A hydraulic valve core is provided at the right end of the inner cavity. A hydraulic cavity is formed between the right end of the hydraulic valve core and the hydraulic oil sealing seat, and a waste oil collection cavity is formed between the left end and the waste oil sealing seat. A drain valve core assembly is provided in the waste oil collection cavity. The drain valve core assembly includes a drain valve core and divides the waste oil collection cavity into a left cavity and a right cavity. The drain valve core is provided with a valve core drain hole communicating with the right cavity, and a sealing assembly for selectively communicating the left cavity and the right cavity is provided inside. Hydraulic oil inlets for communicating with the hydraulic cavity, an oil suction port for communicating with the right cavity, and an oil drain port for communicating with the left cavity are respectively opened on the side wall of the valve body. Wherein, a reset assembly is provided between the left end of the drain valve core and the waste oil sealing seat, and the right end is connected to the hydraulic valve core, so that the drain valve core assembly and the hydraulic valve core can reciprocate in the inner cavity to have a left extreme position and a right extreme position. When in the right extreme position, the oil suction port is opened.
2. The liposuction device according to claim 1, characterized in that, The reset assembly includes a reset spring and a spring seat connected to the left end of the drain valve core. The left end of the reset spring abuts against the waste oil sealing seat, and the right end abuts against the spring seat.
3. The liposuction device according to claim 1 or 2, characterized in that, The sealing assembly includes a seal and a seal spring. The seal includes a seal rod and a seal head. The seal spring is sleeved on the seal rod, with the left end abutting against the reset assembly and the right end abutting against the seal head. The seal head is configured as a conical seal head with a gradually decreasing diameter towards the sealing surface of the drain valve core.
4. The liposuction device according to claim 1, characterized in that, A sealing groove for installing a drain valve core sealing ring is provided on the inner cylindrical surface of the waste oil collection cavity. The drain valve core sealing ring separates the left cavity and the right cavity.
5. The liposuction device according to claim 1, wherein A hydraulic valve core sealing ring is provided between the cylindrical surface of the right section of the hydraulic valve core and the inner cylindrical surface of the right section of the inner cavity. The hydraulic valve core sealing ring is located between the oil suction port and the hydraulic oil inlet.
6. The liposuction device according to claim 1, characterized in that, The oil drain port is adjacent to the waste oil sealing seat, the hydraulic oil inlet is adjacent to the hydraulic oil sealing seat, and the oil suction port is arranged between the oil drain port and the hydraulic oil inlet.
7. The liposuction device according to claim 1, wherein, A limiting step facing the right is provided on the inner wall of the right cavity. When in the left extreme position, the hydraulic valve core abuts against the limiting step.
8. The liposuction device according to claim 1, characterized in that, The valve head of the drain valve core is configured as a T-shaped head, and the left end of the hydraulic valve core is configured as a T-shaped groove matching the T-shaped head.
9. The liposuction device according to claim 1, wherein, A one-way valve for one-way oil discharge is provided at the oil drain port.
10. A waste oil recovery system for bearings, comprising a hydraulic system, a bearing, and a waste oil recovery device, characterized in that, It also includes a fat suction device according to any one of claims 1-9. The hydraulic oil inlet is connected to the hydraulic system, the oil suction port is communicated with the fat discharge port of the bearing, and the oil drain port is communicated with the waste oil recovery device.