Pressure relief buffer mechanism for oil return tank of roller press

Abstract

The utility model provides a pressure relief buffer mechanism for an oil return tank of a roller press, which belongs to the technical field of pressure relief of oil tanks and comprises an air hole arranged on the upper surface of an oil tank, an extension pipe is vertically arranged on the air hole, and a buffer part is arranged at the end of the extension pipe and can be used for stopping hydraulic oil moving to the end of the extension pipe. According to the utility model, hydraulic oil which is about to be splashed outwards can be intercepted, so that the hydraulic oil is prevented from leaking outwards, and waste caused by the fact that the hydraulic oil splashes outwards can be avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of oil tank pressure relief equipment, specifically to a pressure relief buffer mechanism for the return oil tank of a roller press. Background Technology

[0002] In the hydraulic system of a roller press, the return oil tank plays a crucial role, responsible for receiving and storing the hydraulic oil flowing back from various system components. However, during actual operation, the hydraulic system may experience excessive pressure due to various reasons, such as improper operation, system malfunction, or sudden changes in external load. When these pressures exceed the system's set values, the excess hydraulic oil needs to be returned to the tank through a pressure relief circuit to protect the system's stability and safety.

[0003] Traditional roller press oil tank pressure relief methods often employ simple overflow or pressure relief valves. These valves automatically open when the system pressure exceeds a set value, allowing excess hydraulic oil to flow back to the tank. However, this method presents several problems in practical applications. Because the hydraulic oil rapidly releases energy during pressure relief, it can generate significant impact and vibration. The sudden increase in air pressure within the tank can cause some hydraulic oil to splash out through the tank's vents, resulting in hydraulic oil waste and potential pollution of the external working environment. Utility Model Content

[0004] In view of this, the present invention provides a pressure relief buffer mechanism for the return oil tank of a roller press. The present invention can intercept the hydraulic oil that is about to splash outward, thereby preventing the hydraulic oil from leaking outward and thus avoiding the waste caused by the splashing of hydraulic oil.

[0005] To solve the above-mentioned technical problems, this utility model provides a pressure relief buffer mechanism for the return oil tank of a roller press, including a vent hole provided on the upper surface of the oil tank, the vent hole being connected to the inside of the oil tank, an extension tube vertically provided on the vent hole, the extension tube increasing the horizontal height of the gas discharge, and a buffer member provided at the end of the extension tube, the buffer member being used to block the hydraulic oil moving to the end of the extension tube, thus preventing the hydraulic oil from splashing outward.

[0006] The buffer includes a support tube connected to the end of the extension tube, and a filter element is provided inside the support tube to block hydraulic oil. The filter element can filter the hydraulic oil contained in the airflow.

[0007] The filter element is a filter screen, which can filter the hydraulic oil contained in the airflow.

[0008] A cap is also connected above the support pipe. The cap is used to block the hydraulic oil that flows out of the filter element. Some of the hydraulic oil that passes through the filter element will be blocked by the cap. A pressure relief space is formed between the cap and the support pipe to release air pressure.

[0009] The cap is suspended and fixed above the support tube by a connecting component, and airflow can be discharged outward through the position between the cap and the support tube.

[0010] The support assembly includes a bracket mounted on a support tube, through which airflow can pass. A threaded sleeve is provided at the top of the bracket, and a lead screw is provided at the bottom of the cap corresponding to the threaded sleeve, which can be screwed into the threaded sleeve.

[0011] The cap is equipped with a force-applying structure, which facilitates the application of force to the cap.

[0012] The support tube is fixed to the extension tube by a threaded connection, which makes it easy to assemble and disassemble the support tube.

[0013] The outer wall of the support tube is threaded, and the inner wall of the end of the extension tube is threaded.

[0014] A seal is provided at the bottom of the bracket edge to block the gap between the support tube and the extension tube. The seal prevents gas from carrying hydraulic oil out of the gap between the support tube and the extension tube.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] 1. Effective interception of hydraulic oil splash: By installing an extension pipe and buffer component on the vent of the oil tank, this invention can effectively intercept hydraulic oil that may splash out due to excessive system pressure. This not only avoids the waste of hydraulic oil but also significantly reduces pollution to the external working environment, improving the environmental performance of the equipment.

[0017] 2. Enhanced stability during pressure relief: The filter element (such as a screen) in the buffer component ensures effective filtration of the hydraulic oil during pressure relief, reducing the impact of impurities in the hydraulic oil on the system. Simultaneously, the pressure relief space formed between the cap and the support pipe provides conditions for a smooth release of air pressure, avoiding shocks and vibrations caused by excessively rapid pressure relief, thus improving the stability of the entire hydraulic system.

[0018] 3. Easy to adjust and maintain: The support tube in this invention is fixed to the extension tube by a threaded connection. This design facilitates the disassembly, assembly, and replacement of the support tube and its internal buffer components. Furthermore, the cap is suspended and fixed above the support tube by connecting components (such as a lead screw and threaded sleeve), ensuring smooth airflow and allowing the height and position of the cap to be adjusted according to actual needs, further enhancing the flexibility and adaptability of the equipment.

[0019] 4. Improved Equipment Safety: By effectively intercepting hydraulic oil splashes and stabilizing the pressure relief process, this invention significantly reduces the risk of equipment malfunctions and safety accidents caused by hydraulic oil leakage or improper pressure relief. This not only protects the normal operation of the equipment but also ensures the safety of the operators.

[0020] 5. Superior Sealing Performance: The sealing element located at the bottom edge of the support effectively seals the gap between the support pipe and the extension pipe, preventing gas from carrying hydraulic oil out through the gap. This design further enhances the sealing performance of the equipment, ensuring a smooth depressurization process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the pressure relief buffer mechanism of the oil return tank of the roller press according to this utility model;

[0022] Figure 2 This is a structural schematic diagram of the cross-sectional view of the buffer component of this utility model;

[0023] Figure 3 This is a structural schematic diagram of the cap of this utility model from a bottom view;

[0024] Figure 4 This is a schematic diagram of the structure of the support tube of this utility model;

[0025] Figure 5 This is a structural schematic diagram of the support tube of this utility model from the bottom view.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Fuel tank;

[0028] 200. Extension tube;

[0029] 300, Buffer component; 301, Support tube; 302, Filter component; 303, Cap; 304, Force-applying structure; 400, Connecting assembly; 401, Bracket; 402, Lead screw; 403, Threaded sleeve; 404, Seal. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0031] A pressure relief and buffer mechanism for the oil return tank 100 of a roller press includes a vent hole on the upper surface of the oil tank 100. The vent hole is connected to the interior of the oil tank 100, allowing airflow generated by air pressure to suddenly rush into the oil tank 100 and be discharged outward through the vent hole. Figure 1 As shown: The vent hole is vertically provided with a hollow cylindrical extension tube 200, which can increase the horizontal height of the airflow. That is, when the airflow drives the hydraulic oil to move upward through the extension tube 200, some of the hydraulic oil will fall downward under the action of gravity and fall back into the oil tank 100. This can simply and effectively prevent the hydraulic oil from splashing out of the oil tank 100.

[0032] It is worth mentioning that although some hydraulic oil will fall downwards under the action of gravity, some hydraulic oil will still be carried by the airflow to move towards the top of the extension pipe 200. Therefore, the top of the extension pipe 200 is also equipped with a buffer 300. The buffer 300 can be used to block the hydraulic oil moving to the end of the extension pipe 200. Thus, some hydraulic oil that does not fall due to gravity will be carried to the top of the extension pipe 200, and then the hydraulic oil will move to the buffer 300, which can block the hydraulic oil.

[0033] Specifically, such as Figure 2 , 5 As shown, the buffer 300 may include a support tube 301 connected to the end of the extension tube 200. The support tube 301 is also a hollow cylindrical structure. The support tube 301 is provided with a filter 302 for blocking hydraulic oil. The filter 302 can filter the airflow, so that the airflow will enter the support tube 301 when passing through the buffer 300. The airflow can carry the hydraulic oil and blow it onto the filter 302. The filter 302 can filter the gas, so the hydraulic oil can be blocked by the filter 302, which can effectively prevent the hydraulic oil from splashing out of the oil tank 100.

[0034] The filter element 302 is designed as a filter screen, which means that when the hydraulic oil comes into contact with the filter screen, it will stick to the filter screen, thus effectively preventing the hydraulic oil from being carried outside the oil tank 100. At the same time, the filter element 302 can also be designed as a plate structure, with several perforations through the plate structure. In this way, when the hydraulic oil moves upward, it will come into contact with the bottom of the plate structure, thus effectively blocking it.

[0035] like Figure 2 , 3As shown, a cap 303 is suspended above the support pipe 301 via a connecting assembly 400. The cap 303 and the support pipe 301 are on the same axis, and the bottom of the cap 303 is larger than the cross-section of the support pipe 301. The cap 303 is used to block the hydraulic oil flowing out of the filter element 302. That is, some hydraulic oil will be carried by the airflow through the filter element 302 and out of the support pipe 301. As a result, the airflow will carry the hydraulic oil and blow it to the bottom of the cap 303, where the hydraulic oil will stick to the bottom of the cap 303. Under the action of gravity, it will fall back into the support pipe 301. A pressure relief space is formed between the cap 303 and the support pipe 301 to release air pressure. The airflow discharged from the support pipe 301 can be discharged to the outside through the pressure relief space.

[0036] like Figure 4 As shown, the connecting component 400 includes a bracket 401 mounted on the support tube 301 (in this embodiment, the bracket 401 is a circular plate structure with several circular holes through it, allowing airflow inside the support tube 301 to pass through the bracket 401 and reach the bottom of the cap 303). A threaded sleeve 403 is mounted on the top of the bracket 401, and the threaded sleeve 403 is located on the same axis as the support tube 301. The bracket 401 provides support for the threaded sleeve 403. Corresponding to the threaded sleeve 403, a lead screw 402 is mounted at the bottom of the cap 303, and the threaded sleeve 403 is also located on the same axis as the lead screw 402. The lead screw 402 can be screwed into the threaded sleeve 403 to fix the cap. It is worth mentioning that the connecting component 400 is a threaded structure, which also facilitates the adjustment of the height of the cap 303, thereby improving its practicality and applicability.

[0037] like Figure 1 , 2 As shown in Figure 3, in order to facilitate applying force to the cap 303, the cap 303 is also provided with a concave structure, and the cap 303 is also provided with a force-applying structure 304. The force-applying structure 304 is used to facilitate applying force to the cap 303 so as to drive the cap 303 to rotate. The force-applying structure 304 can be provided as grooves arranged in a ring array on the cap 303.

[0038] The outer wall of the support tube 301 is threaded, and the inner wall of the end of the extension tube 200 is threaded. This means that the bottom of the support tube 301 can be screwed into the top of the extension tube 200, thus enabling a quick connection between the support tube 301 and the extension tube 200. At the same time, the support tube 301 can be quickly disassembled, which facilitates the overall maintenance of the buffer 300. In addition, for quick disassembly and assembly, the support tube 301 and the extension tube 200 can also be designed with a snap-fit ​​connection structure.

[0039] like Figure 2 , 5As shown, a sealing element 404 is provided at the bottom of the edge of the bracket 401. The sealing element 404 seals the gap between the support tube 301 and the extension tube 200. The sealing element 404 can be set as an O-ring rubber ring. When the support tube 301 is screwed on the extension tube 200, it will gradually come into contact with the sealing element 404 and deform. In this way, the sealing element 404 can achieve the purpose of sealing the gap between the support tube 301 and the extension tube 200, preventing gas from driving hydraulic oil out of the gap.

[0040] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A pressure relief and buffer mechanism for the oil return tank of a roller press, characterized in that: The oil tank (100) includes a vent hole on its upper surface, an extension tube (200) is provided vertically on the vent hole, and a buffer (300) is provided at the end of the extension tube (200). The buffer (300) can be used to block the hydraulic oil moving to the end of the extension tube (200).

2. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 1, characterized in that: The buffer (300) includes a support tube (301) connected to the end of the extension tube (200), and the support tube (301) is provided with a filter (302) for blocking hydraulic oil.

3. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 2, characterized in that: The filter element (302) is configured as a filter screen.

4. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 2, characterized in that: A cap (303) is also connected above the support pipe (301). The cap (303) is used to block the hydraulic oil that flows out of the filter element (302). A pressure relief space for releasing air pressure is formed between the cap (303) and the support pipe (301).

5. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 4, characterized in that: The cap (303) is suspended and fixed above the support tube (301) by the connecting assembly (400).

6. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 5, characterized in that: The connecting assembly (400) includes a bracket (401) provided on the support tube (301), and a threaded sleeve (403) is provided on the top of the bracket (401), and a lead screw (402) is provided at the bottom of the cap (303) corresponding to the threaded sleeve (403).

7. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 5, characterized in that: The cap (303) is provided with a force-applying structure (304).

8. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 6, characterized in that: The support tube (301) is fixed to the extension tube (200) by a threaded connection.

9. The pressure relief and buffer mechanism of the roller press return oil tank (100) as described in claim 8, characterized in that: The outer wall of the support tube (301) is provided with threads, and the inner wall of the end of the extension tube (200) is provided with internal threads.

10. The pressure relief and buffer mechanism of the roller press oil return tank (100) as described in claim 9, characterized in that: The bottom edge of the bracket (401) is provided with a sealing element (404) to seal the gap between the support tube (301) and the extension tube (200).

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