Oil drain valve
By adding a third chamber and a removable filter assembly to the oil drain valve, the functional failure problem caused by impurities is solved, and the convenience and efficiency of cleaning are achieved, avoiding the use of elongated brushes.
Patent Information
- Application Number
- CN202420527782.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-18
AI Technical Summary
The existing oil drain valves are prone to blockage of impurities in the security oil after long-term use, resulting in failure of the oil drain function. The existing cleaning method is time-consuming and labor-intensive and requires cleaning with a slender brush.
An oil drain valve was designed, adding a third chamber and equipped with a removable filter assembly, including a sealing cover, a filter rack and a filter mesh. The security oil is filtered through the filter assembly to prevent impurities from entering. The filter can be removed directly during cleaning. The components are cleaned, avoiding the use of slender brushes.
It effectively prevents impurities from being blocked, simplifies the cleaning process, makes cleaning more convenient, saves time and effort, and improves the efficiency of oil drain valves.
Smart Images
Figure CN222163674U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of oil drain valves, and in particular to an oil drain valve. Background Art
[0002] In the cement production process, in order to achieve energy recovery and utilization and improve energy utilization rate, waste heat power generation steam turbines are often used to treat the exhaust gas discharged from the kiln head clinker cooler or the kiln tail preheater, and convert the waste heat in the exhaust gas into electrical energy. The safety oil system is an important component of the waste heat power generation steam turbine, which is used to protect the safe operation of the steam turbine. When encountering protection action, the safety oil cuts off the steam inlet of the steam turbine by pressure relief to protect the steam turbine from expanding.
[0003] The Chinese patent with the publication number CN207394045U discloses an emergency oil relief valve, wherein a valve cover is provided at one end of the valve body, a valve stem passes through the valve cover, the valve stem is fixedly connected to a valve head arranged inside the valve body, and the part of the valve stem located in the valve body is covered with an elastic member; an oil leakage hole is provided on the outer surface of the valve body, and the valve head completely seals the oil leakage hole; a safety oil chamber is provided at the bottom of the valve body, and a safety oil hole is provided at the bottom of the safety oil chamber; and a hand wheel is provided at the top of the valve stem. When the safety oil drops to a certain level, the valve stem and the valve head move downward rapidly under the action of the upper spring force, and the oil leakage is opened, so that the safety oil pressure is released more quickly at the critical moment, so that the main steam valve and the steam extraction valve are closed more quickly, so as not to cause the turbine to overspeed and be damaged. At the same time, if you want to restore the safety oil pressure, you must pull the upper hand wheel by hand to close the oil leakage to establish the safety oil pressure, so as to prevent the main steam valve and the steam extraction valve from opening due to the rise of the safety oil pressure due to misoperation and causing accidents.
[0004] After long-term use, the above-mentioned oil drain valve will be blocked by impurities or sediments in the safety oil, making it impossible to drain oil normally. The common treatment method is to remove the oil drain valve from the safety oil pipeline and clean the impurities in its channel, and then install it into the oil drain valve pipeline after cleaning. However, since the channel of the oil drain valve is small, it is not easy to clean and needs to be brushed with a slender brush, which is time-consuming. Summary of the invention
[0005] The purpose of the embodiments of the present application is to provide an oil drain valve that can solve the technical problems raised by the background technology.
[0006] The embodiment of the present application provides an oil drain valve, including a valve body and a valve stem, wherein a first chamber, a second chamber and a third chamber are sequentially provided in the valve body from top to bottom, the first chamber is communicated with the second chamber, the second chamber is communicated with the third chamber, an oil drain hole is provided on one side of the valve body, the oil drain hole is communicated with the first chamber, a safety oil hole is provided at the bottom of the valve body, the safety oil hole is communicated with the third chamber, a valve cover is fixedly embedded on the top of the valve body, a valve head is provided in the second chamber, one end of the valve stem movably passes through the valve cover and extends through the first chamber into the second chamber, and is fixedly connected to the valve head, the valve head completely seals the connection between the first chamber and the second chamber, a hand wheel is fixedly provided at the other end of the valve stem, an elastic member is sleeved on the valve stem, the elastic member is located in the first chamber, and a detachable filter assembly is provided in the third chamber.
[0007] Furthermore, the filter assembly includes a sealing cover, a filter frame and a filter screen. The valve body is provided with a mounting hole, the mounting hole is communicated with the third chamber, the sealing cover is threadedly connected to the mounting hole, and the filter screen is fixedly connected to the sealing cover through the filter frame.
[0008] Furthermore, a sealing rubber ring is provided between the sealing cover and the mounting hole, and the sealing rubber ring is fixed on the sealing cover.
[0009] Furthermore, a handle is provided on the outer side of the sealing cover.
[0010] Furthermore, a baffle is fixedly provided on the valve stem, the baffle is located in the first chamber, and the elastic member is fixedly provided between the baffle and the valve cover.
[0011] Furthermore, the elastic member is a spring.
[0012] Beneficial effects of the utility model:
[0013] The utility model optimizes the structure of the valve body. Compared with the prior art, a third chamber is added, and a detachable filter assembly is arranged in the third chamber. The oil drain valve is installed on the safety oil pipeline. The safety oil enters the chamber from the safety oil hole, and enters the second chamber after being filtered by the filter assembly in the third chamber, so as to prevent impurities in the safety oil from entering the second chamber and causing the oil drain valve to be blocked. When cleaning, the filter assembly is removed from the third chamber for cleaning, and there is no need to use a slender brush to clean the inside of the valve body. The cleaning is convenient, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 This is a schematic diagram of the structure of some embodiments of the present application;
[0016] Figure 2 It is a cross-sectional view of some embodiments of the present application;
[0017] Figure 3 This is a schematic diagram of the structure of the filter assembly in some embodiments of the present application;
[0018] The reference numerals are:
[0019] 1. Valve body; 11. First chamber; 12. Second chamber; 13. Third chamber; 14. Oil drain hole; 15. Safety oil hole; 2. Valve stem; 21. Baffle; 3. Valve cover; 4. Valve head; 5. Handwheel; 6. Elastic part; 7. Filter assembly; 71. Sealing cover; 711. Handle; 72. Filter frame; 73. Filter screen; 8. Sealing rubber ring. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0025] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Specific embodiment:
[0027] like Figure 1-3As shown, the present application provides an oil drain valve, comprising a valve body 1 and a valve stem 2. A first chamber 11, a second chamber 12 and a third chamber 13 are sequentially arranged in the valve body 1 from top to bottom. The first chamber 11 is communicated with the second chamber 12, and the second chamber 12 is communicated with the third chamber 13. An oil drain hole 14 is arranged on one side of the valve body 1, and the oil drain hole 14 is communicated with the first chamber 11. A safety oil hole 15 is arranged at the bottom of the valve body 1, and the safety oil hole 15 is communicated with the third chamber 13. A valve cover 3 is fixedly embedded on the top of the valve body 1, and a valve head 4 is arranged in the second chamber 12. One end of the valve stem 2 movably penetrates the valve cover 3 and passes through the first chamber 11 to extend into the second chamber 12, and is fixedly connected to the valve head 4. The valve head 4 completely seals the connection between the first chamber 11 and the second chamber 12. A hand wheel 5 is fixedly provided at the other end of the valve stem 2. An elastic member 6 is sleeved on the valve stem 2. The elastic member 6 is located in the first chamber 11. A detachable filter assembly 7 is provided in the third chamber 13. The oil drain valve is installed on the safety oil pipeline. The safety oil enters the chamber from the safety oil hole 15, and enters the second chamber 12 after being filtered by the filter assembly 7 in the third chamber 13, so as to prevent impurities in the safety oil from entering the second chamber 12 and causing blockage of the oil drain valve. When cleaning, the filter assembly 7 is removed from the third chamber 13 for cleaning. There is no need to use a slender brush to clean the inside of the valve body 1. The cleaning is convenient, saving time and effort.
[0028] like Figure 2 and Figure 3 As shown, the filter assembly 7 includes a sealing cover 71, a filter frame 72 and a filter screen 73. A mounting hole is provided on the valve body 1, and the mounting hole is communicated with the third chamber 13. The sealing cover 71 is threadedly connected to the mounting hole, and the filter screen 73 is fixedly connected to the sealing cover 71 through the filter frame 72. Specifically, when cleaning, the sealing cover 71 is rotated to separate the sealing cover 71 from the valve body 1, and the filter screen 73 is taken out through the filter frame 72, and then the filter screen 73 is cleaned. It should be noted that when cleaning, it is necessary to cut off the flow of the safety oil to the oil drain valve to avoid the safety oil from continuously flowing out of the mounting hole when the filter screen 73 is cleaned, causing waste and pollution.
[0029] like Figure 2 As shown, a sealing rubber ring 8 is provided between the sealing cover 71 and the mounting hole. The sealing rubber ring 8 is fixed on the sealing cover 71 to prevent the safety oil entering the third chamber 13 in the valve body 1 from leaking from the connection between the sealing cover 71 and the mounting hole.
[0030] like Figure 1-3 As shown, a handle 711 is provided on the outer side of the sealing cover 71 , and the handle 711 is used to facilitate a user to rotate the sealing cover 71 .
[0031] like Figure 2As shown, a baffle 21 is fixed on the valve stem 2, and the baffle 21 is located in the first chamber 11. The elastic member 6 is fixed between the baffle 21 and the valve cover 3. When the safety oil pressure is normal, the safety oil pressure is equal to the elastic force of the elastic member 6, and the valve head 4 completely seals the connection between the first chamber 11 and the second chamber 12. When the safety oil drops to a certain level in an emergency, the oil pressure decreases. Under the action of the elastic member 6, the valve stem 2 and the valve head 4 move downward rapidly, so that the first chamber 11 is connected with the second chamber 12, and the safety oil flows from the second chamber 12 to the first chamber 11, and then from the oil drain hole 1 4 flows out, thereby quickly leaking oil. In order to restore the safety oil pressure, the oil pressure of the safety oil increases from small to large during the recovery process. Due to the previous leakage of the safety oil, the pressure in the second chamber 12 and the third chamber 13 decreases, which is less than the elastic force of the elastic member 6. The valve head 4 and the valve stem 2 are subjected to the downward elastic force of the elastic member 6, and the safety oil pressure cannot be established. Therefore, the upper hand wheel 5 must be manually pulled to offset the elastic force to close the oil leakage, so that the safety oil can be restored. Then, the safety oil pressure can be restored to a state equal to the elastic force to establish the safety oil pressure. The elastic member 6 is a spring, and the elastic force of the spring is used to act on the baffle 21.
[0032] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An oil drain valve, characterized in that: The invention comprises a valve body and a valve stem, wherein a first chamber, a second chamber and a third chamber are sequentially arranged in the valve body from top to bottom, the first chamber is communicated with the second chamber, the second chamber is communicated with the third chamber, an oil drain hole is arranged on one side of the valve body, the oil drain hole is communicated with the first chamber, a safety oil hole is arranged on the bottom of the valve body, the safety oil hole is communicated with the third chamber, a valve cover is fixedly embedded on the top of the valve body, a valve head is arranged in the second chamber, one end of the valve stem movably passes through the valve cover and extends through the first chamber into the second chamber, and is fixedly connected with the valve head, the valve head completely seals the connection between the first chamber and the second chamber, a hand wheel is fixedly arranged on the other end of the valve stem, an elastic member is sleeved on the valve stem, the elastic member is located in the first chamber, and a detachable filter assembly is arranged in the third chamber; The filter assembly includes a sealing cover, a filter frame and a filter screen. The valve body is provided with a mounting hole, the mounting hole is communicated with the third chamber, the sealing cover is threadedly connected to the mounting hole, and the filter screen is fixedly connected to the sealing cover through the filter frame.
2. An oil drain valve according to claim 1, characterized in that: A sealing rubber ring is arranged between the sealing cover and the mounting hole, and the sealing rubber ring is fixed on the sealing cover.
3. An oil drain valve according to claim 2, characterized in that: A handle is arranged on the outer side of the sealing cover.
4. The oil drain valve according to claim 1, characterized in that: A baffle is fixedly disposed on the valve stem, the baffle is located in the first chamber, and the elastic member is fixedly disposed between the baffle and the valve cover.
5. An oil drain valve according to claim 4, characterized in that: The elastic member is a spring.