Safety oil drain valve

Abstract

The utility model belongs to the technical field of safety oil drain valves, and discloses a safety oil drain valve which comprises a valve body, a spring is installed in the valve body, a valve element is installed in the valve body, the valve element is inserted into the spring, a spring gasket is installed in the valve body, the spring gasket is connected to the outer surface of the valve element in a sleeved mode, and the spring gasket is pressed at one end of the spring. The outer surface of the valve body is provided with external threads, the valve body is installed on the bearing seat in a threaded fit mode through the external threads and an oil injection hole matched with the external threads, an open hole is formed in the valve body, the valve element is downwards inserted into the spring through the open hole, the open hole is composed of an upper open hole body and a lower open hole body, and the diameter of an inner cavity of the upper open hole body is smaller than that of an inner cavity of the lower open hole body. The utility model not only can judge whether the lubricating oil in the bearing seat is in a full oil state, but also can improve the running performance of the bearing and reduce the resistance, temperature and working reliability, and has the characteristics of simple structure, sensitive response and convenience in installation.

Description

Technical Field

[0001] This utility model relates to the field of safety oil relief valve technology, and in particular to a safety oil relief valve. Background Technology

[0002] Safety relief valves are used to prevent container rupture, leakage, and explosion caused by excessive pressure, thus ensuring the safety of equipment and personnel. Their main working principle is that when the internal pressure of the container exceeds the set pressure value, the safety relief valve will automatically open to release excess liquid or gas to reduce the internal pressure. However, if the safety valve malfunctions or requires maintenance, the vent pipe below the valve seat can also bear part of the pressure relief task to avoid the danger caused by high pressure.

[0003] Current safety drain valves consist of components such as a safety valve, a vent pipe, an oil nozzle, and a valve seat. However, the inventors have gradually discovered in applications that it is impossible to determine whether the lubricating oil in the bearing housing is full. Therefore, we have proposed a safety drain valve. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a safety drain valve to solve the technical problem that current safety drain valves cannot determine whether the lubricating oil in the bearing housing is full.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A safety relief valve includes a valve body, a spring installed inside the valve body, a valve core installed inside the valve body and inserted into the spring, and a spring washer installed inside the valve body, the spring washer being sleeved on the outer surface of the valve core and pressed against one end of the spring.

[0008] As an improved technical solution, the outer surface of the valve body is provided with an external thread, and the valve body is installed on the bearing seat through the external thread and the threaded oil injection hole that matches the external thread.

[0009] As an improved technical solution, the valve body has an opening inside, and the valve core is inserted downward into the spring through the opening.

[0010] As an improved technical solution, the opening consists of an upper opening and a lower opening, the inner diameter of the upper opening is smaller than the inner diameter of the lower opening, and the end of the spring away from the spring washer is located at the top wall of the inner cavity of the lower opening.

[0011] As an improved technical solution, the valve core is inserted into the valve body at one end with a semi-hollow riveting hole, and the spring washer is pressed and installed on the bottom end of the spring through the edge protrusion of the semi-hollow riveting hole.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are:

[0013] 1. This utility model utilizes the external thread on the valve body to mate with the thread of the oil injection hole to install it on the bearing housing. Then, new lubricating oil is added through the oil injection hole on the other side of the bearing housing. At this time, the new lubricating oil enters the bearing housing and pushes out the lubricating oil that has been contaminated or lost its function after working for a certain period of time, until the black waste oil is completely pushed out and becomes clear lubricating oil. During this process, the condition of whether the black waste oil has been completely pushed out can be used as a criterion to determine whether the lubricating oil in the bearing housing is in a full state.

[0014] 2. In this utility model, when lubricating oil is added, the valve core, under the combined action of the spring washer and the spring, seals the lubricating grease inside the bearing housing, keeping the safety drain valve closed. After the bearing housing is filled with grease, when the internal pressure exceeds the drain pressure of the safety drain valve, or when the bearing rotates at high speed, the grease in the bearing chamber will heat up and generate gas due to violent agitation. At this time, the valve core moves upward and opens to drain the grease, thereby reducing the internal pressure of the bearing housing and leaving a suitable amount of oil in the bearing chamber to maintain a normal temperature. When the lubricating oil becomes contaminated or loses its function after the equipment has been working for a certain period of time and needs to be refilled with new lubricating oil, the pressure of the new oil injection will push the old oil to open the valve core, thereby discharging the old oil. After the oil filling stops, when the internal pressure of the bearing housing is less than the closing pressure of the safety drain valve, the safety drain valve closes. This prevents the oil seal from being damaged due to pressure inside the bearing housing and lack of outlet, thus improving the bearing's operating performance, reducing resistance, temperature, and operational reliability. It also features a simple structure, sensitive response, and convenient installation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] In the diagram: 1. Valve body; 101. External thread; 102. Opening; 2. Spring; 3. Valve core; 301. Semi-hollow riveting hole; 4. Spring washer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0023] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0024] Reference Figure 1 and Figure 2A safety relief valve is provided, which includes a valve body 1, a spring 2 installed inside the valve body 1, a valve core 3 installed inside the valve body 1 and inserted into the spring 2, and a spring washer 4 installed inside the valve body 1, the spring washer 4 being sleeved on the outer surface of the valve core 3 and pressed against one end of the spring 2.

[0025] Reference Figure 1 and Figure 2 The outer surface of the valve body 1 is provided with an external thread 101, and the valve body 1 is installed on the bearing seat (not shown in the figure) through the external thread 101 and the oil injection hole (not shown in the figure) that is adapted to the external thread 101.

[0026] Reference Figure 1 and Figure 2 The valve body 1 has an opening 102 inside, and the valve core 3 is inserted downward into the spring 2 through the opening 102.

[0027] Reference Figure 2 The opening 102 consists of an upper opening and a lower opening. The inner diameter of the upper opening is smaller than that of the lower opening, and the end of the spring 2 away from the spring washer 4 is located at the top wall of the inner cavity of the lower opening.

[0028] Reference Figure 2 The valve core 3 is inserted into the valve body 1 at one end and has a semi-hollow riveting hole 301. The spring washer 4 is pressed and installed on the bottom end of the spring 2 through the edge protrusion of the semi-hollow riveting hole 301.

[0029] In actual use, when the bearing housing needs to be lubricated, the external thread 101 on the valve body 1 is used to mate with the thread of the oil injection hole to install it on the bearing housing. Then, new lubricating oil is added through the oil injection hole on the other side of the bearing housing. At this time, the new lubricating oil enters the bearing housing and pushes out the lubricating oil that has been contaminated or lost its function after working for a certain period of time, until the black waste oil is completely pushed out and becomes clear lubricating oil. During this period, the lubricating oil in the bearing housing can be judged by whether the black waste oil has been completely pushed out, thus determining whether the lubricating oil in the bearing housing is full.

[0030] Meanwhile, when adding lubricating oil, valve core 3, under the combined action of spring washer 4 and spring 2, seals the lubricating grease inside the bearing housing, keeping the safety drain valve closed. After the bearing housing is filled with grease, when the internal pressure exceeds the drain pressure of the safety drain valve, or when the bearing rotates at high speed, the grease in the bearing chamber will heat up and generate gas due to violent churning. At this time, valve core 3 rises and opens to drain the grease, thereby reducing the internal pressure inside the bearing housing and leaving a suitable amount of oil in the bearing chamber to maintain a normal temperature. When the lubricating oil becomes contaminated or loses its function after the equipment has been working for a certain period of time and needs to be refilled with new lubricating oil, the new oil is injected... Under pressure, the old oil is pushed to open valve core 3, thereby discharging the old oil. After the oil injection stops, when the pressure inside the bearing housing is less than the closing pressure of the safety relief valve, the safety relief valve closes. This prevents the oil seal from being damaged due to a lack of outlet for the oil when pressure is generated inside the bearing housing. This improves bearing performance, reduces resistance, temperature, and operational reliability. It also features a simple structure, sensitive response, and easy installation. This device can not only determine whether the lubricating oil in the bearing housing is full, but also improve bearing performance, reduce resistance, temperature, and operational reliability. It also features a simple structure, sensitive response, and easy installation.

[0031] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A safety relief valve, characterized in that: Includes a valve body (1), a spring (2) installed inside the valve body (1), a valve core (3) installed inside the valve body (1), and the valve core (3) inserted into the spring (2). A spring washer (4) is installed inside the valve body (1), the spring washer (4) is sleeved on the outer surface of the valve core (3), and the spring washer (4) is pressed against one end of the spring (2). The outer surface of the valve body (1) is provided with an external thread (101), and the valve body (1) is installed on the bearing seat through the external thread (101) and the oil injection hole thread that is compatible with the external thread (101); The valve body (1) has an opening (102) inside, and the valve core (3) is inserted downward into the spring (2) through the opening (102); The opening (102) consists of an upper opening and a lower opening. The inner diameter of the upper opening is smaller than that of the lower opening, and the end of the spring (2) away from the spring washer (4) is located at the top wall of the inner cavity of the lower opening. The valve core (3) is inserted into the valve body (1) at one end and has a semi-hollow riveting hole (301). The spring washer (4) is pressed and installed on the bottom end of the spring (2) through the edge protrusion of the semi-hollow riveting hole (301).

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