Hydraulic pump adjustable seal device

Abstract

This utility model provides an adjustable sealing device for a hydraulic pump, including a sealing structure comprising a fitting tube, an installation ring at the top of the fitting tube, a device ring at the top of the installation ring, a connecting block on the inner wall of the device ring, and an electric push rod rotatably connected inside the connecting block. One end of the electric push rod is rotatably connected to a positioning ring. This utility model is rationally designed. The electric push rod pushes the positioning ring inward, creating a frictional or adhesive connection between the positioning ring and the pipe. When the pipe detaches from the hydraulic pump or a gap appears between them, the electric push rod is activated, pushing the pipe back into the outer wall of the hydraulic pump pipe structure, increasing the contact area between them, thus enabling adjustable functionality between the hydraulic pump pipe structure and the pipe.

Description

Technical Field

[0001] This utility model mainly relates to the field of hydraulic pumps, specifically to an adjustable sealing device for hydraulic pumps. Background Technology

[0002] As the core power component of a hydraulic system, the reliability and stability of the hydraulic pump's performance directly affect the normal operation of the entire hydraulic system. Among the many key components of a hydraulic pump, the sealing device plays a crucial role. Its main function is to prevent high-pressure working medium (hydraulic oil) from leaking from the pump body cavity to the outside, while also preventing outside air and contaminants from entering the pump, thereby ensuring the pump's volumetric efficiency, working pressure, and service life.

[0003] During the operation of specific embodiments, the inventors discovered the following defects:

[0004] The pipeline and the hydraulic pump are connected by a sealing device. However, the pipeline is affected by the internal medium for a long time, which can cause the sealing device between the pipeline and the hydraulic pump to detach. It is necessary to manually push the sealing device to reconnect it from time to time. The adjustment accuracy is rough, and it is difficult to achieve precise and uniform pressure control. Too little pressure may lead to insufficient compensation, while too much pressure will accelerate the wear of the seal and even cause it to burn, reducing its service life.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This utility model provides an adjustable sealing device for a hydraulic pump to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: an adjustable sealing device for a hydraulic pump, comprising a hydraulic pump pipe structure, wherein a sealing structure is provided on the outer wall of the hydraulic pump pipe structure, and a pipe is provided between the hydraulic pump pipe structure and the sealing structure.

[0010] A sealing structure includes a fitting tube, a mounting ring at the top of the fitting tube, a device ring at the top of the mounting ring, a connecting block on the inner wall of the device ring, an electric push rod rotatably connected inside the connecting block, and a positioning ring rotatably connected to one end of the electric push rod.

[0011] Furthermore, the hydraulic pump pipe structure includes a pump pipe body, the outer wall of which is provided with a fitting ring, and the outer wall of the pump pipe body fits against the inner wall of the pipe.

[0012] Furthermore, the bottom of the bonding tube is provided with bolt holes, the bolt holes are fitted with the bonding ring, and bolts are provided between the bolt holes and the bonding ring.

[0013] Furthermore, the number of electric push rods is set to multiple, and the multiple electric push rods are arranged in a ring array on the inner wall of the equipment ring, with the inner side of the positioning ring fitting against the outer wall of the pipe.

[0014] Furthermore, a sealing ring is provided at the top of the device ring, an inflatable sealing ring is provided on the inner side of the sealing ring, and an air pipe is provided on the outer wall of the sealing ring, with the inflatable sealing ring connected to the air pipe.

[0015] Furthermore, the air tube is equipped with a one-way valve, and the number of the inflation sealing rings is set to multiple.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] This utility model uses an electric push rod to move the positioning ring inward. The positioning ring is frictionally connected or glued to the pipe. When the pipe is separated from the hydraulic pump or a gap appears between them, the electric push rod is activated to push the pipe back into the outer wall of the hydraulic pump pipe structure, increasing the contact area between them. This allows for adjustable functionality between the hydraulic pump pipe structure and the pipe. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the hydraulic pump pipe structure of this utility model;

[0021] Figure 3 This is a three-dimensional cross-sectional view of the sealing structure of this utility model.

[0022] Figure label:

[0023] 1. Hydraulic pump pipe structure; 101. Pump pipe body; 102. Fitting ring; 2. Sealing structure; 201. Fitting pipe; 202. Mounting ring; 203. Equipment ring; 204. Sealing ring; 205. Bolt hole; 206. Connecting block; 207. Electric push rod; 208. Positioning ring; 209. Inflatable sealing ring; 210. Air pipe. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" 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.

[0028] Example

[0029] See attached document Figure 1-3 An adjustable sealing device for a hydraulic pump includes a hydraulic pump pipe structure 1, a sealing structure 2 provided on the outer wall of the hydraulic pump pipe structure 1, and a pipe provided between the hydraulic pump pipe structure 1 and the sealing structure 2.

[0030] The sealing structure 2 includes a fitting tube 201, with an installation ring 202 at the top of the fitting tube 201. An equipment ring 203 is located at the top of the installation ring 202. A connecting block 206 is located on the inner wall of the equipment ring 203. An electric push rod 207 is rotatably connected to the inside of the connecting block 206. A positioning ring 208 is rotatably connected to one end of the electric push rod 207. A bolt hole 205 is located at the bottom of the fitting tube 201, fitting with the fitting ring 202. A bolt is installed between the bolt hole 205 and the fitting ring 102. Multiple electric push rods 207 are arranged in a circular array on the inner wall of the equipment ring 203. The inner side of the positioning ring 208 fits against the outer wall of the pipe. A sealing ring 204 is located at the top of the equipment ring 203. An inflatable sealing ring 209 is provided on the inner side of the sealing ring 204, and an air pipe 210 is provided on the outer wall of the sealing ring 204. The inflatable sealing ring 209 is connected to the air pipe 210, and a one-way valve is provided inside the air pipe 210. The number of inflatable sealing rings 209 is set to multiple. When it is necessary to connect the pump pipe body 101 to the pipeline through the sealing structure 2, glue can be applied to the outer wall of the pipeline to connect the pipeline to the positioning ring 208, or the positioning ring 208 can be rubbed to connect with the pipeline. Then, the inner wall of the pipeline is attached and fixed to the outer wall of the pump pipe body 101. After that, the external inflation structure is connected to the air pipe 210, so that the gas enters the interior of the inflatable sealing ring 209 through the air pipe 210. The inflatable sealing ring 209 expands and attaches to the outer wall of the pipeline to achieve a seal between the pipeline and the pump pipe body 101.

[0031] When the pipeline is displaced, some of the gas inside the inflatable sealing ring 209 is discharged, and then the electric push rod 207 is activated. The electric push rod 207 pushes the positioning ring 208 to one end of the pump pipe body 101 to adjust the position of the pipeline. After that, the inflation structure refills the gas into the inflatable sealing ring 209.

[0032] Furthermore, the hydraulic pump pipe structure 1 includes a pump pipe body 101, and a fitting ring 102 is provided on the outer wall of the pump pipe body 101. The outer wall of the pump pipe body 101 fits against the inner wall of the pipe. The pump pipe body 101 is used to connect to the hydraulic pump, and the fitting ring 102 is used to connect to the sealing structure 2.

[0033] Multiple electric push rods 207 employ synchronous control circuits or mechanical linkage devices to ensure that the positioning ring 208 applies force evenly and avoids pipe deflection.

[0034] An electromagnetic exhaust valve is added to the air pipe 210, which is linked to the control system. When the pipe needs to be adjusted, the exhaust valve automatically opens to release gas, preventing the inflation seal ring 209 from obstructing the pipe movement.

[0035] Installation phase:

[0036] The sealing structure 2 is fixed to the fitting ring 102 of the hydraulic pump pipe structure 1 through the bolt hole 205 and tightened with bolts.

[0037] Insert the pipe between the outer wall of the pump pipe body 101 of the hydraulic pump pipe structure 1 and the sealing structure 2 to ensure that the inner wall of the pipe fits against the outer wall of the pump pipe body 101.

[0038] The outer wall of the pipe is fixed to the positioning ring 208 by friction connection or adhesive bonding.

[0039] Initial sealing stage:

[0040] By connecting the air pipe 210 to an external air source, air is injected into the air sealing ring 209, causing it to expand and fit tightly against the outer wall of the pipe, forming a preliminary seal.

[0041] Operation monitoring and adjustment phase:

[0042] When the pipeline is displaced due to pressure fluctuations or vibrations of the hydraulic medium, it may lead to seal failure.

[0043] Automatic detection and response: The pump pipe body 101 is equipped with a sensor, which can be a pressure sensor or a displacement sensor. The position of the pipe can be monitored by the pressure sensor or the displacement sensor. When displacement is detected, the control system first releases the gas in the inflation sealing ring 209 through the exhaust valve part of the air pipe 210 to reduce frictional resistance.

[0044] When the electric push rod 207 is activated, the multiple push rods in a ring array simultaneously push the positioning ring 208 inward, thereby pushing the pipe back into the outer wall of the pump pipe body 101 and restoring tight contact.

[0045] After adjustment, inflate the air sealing ring 209 again through the air tube 210 to make it expand and restore the sealing state.

[0046] Maintenance phase:

[0047] Regularly check the wear of the electric push rod 207 and the inflatable sealing ring 209, and replace the sealing ring or calibrate the push rod stroke if necessary.

[0048] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An adjustable sealing device for a hydraulic pump, characterized in that: include A hydraulic pump pipe structure (1) is provided with a sealing structure (2) on the outer wall of the hydraulic pump pipe structure (1), and a pipe is provided between the hydraulic pump pipe structure (1) and the sealing structure (2); The sealing structure (2) includes a fitting tube (201), a mounting ring (202) is provided at the top of the fitting tube (201), a device ring (203) is provided at the top of the mounting ring (202), a connecting block (206) is provided on the inner wall of the device ring (203), an electric push rod (207) is rotatably connected inside the connecting block (206), and a positioning ring (208) is rotatably connected to one end of the electric push rod (207).

2. A hydraulic pump adjustable seal apparatus as claimed in claim 1, wherein: The hydraulic pump pipe structure (1) includes a pump pipe body (101), and the outer wall of the pump pipe body (101) is provided with a fitting ring (102), and the outer wall of the pump pipe body (101) fits against the inner wall of the pipe.

3. The adjustable sealing device for a hydraulic pump according to claim 1, characterized in that: The bottom of the fitting tube (201) is provided with a bolt hole (205), the bolt hole (205) is fitted with the fitting ring (102), and a bolt is provided between the bolt hole (205) and the fitting ring (102).

4. The adjustable sealing device for a hydraulic pump according to claim 1, characterized in that: The number of electric push rods (207) is set to multiple, and the multiple electric push rods (207) are arranged in a ring on the inner wall of the equipment ring (203), and the inner side of the positioning ring (208) is in contact with the outer wall of the pipe.

5. The adjustable seal apparatus of claim 1, wherein: A sealing ring (204) is provided on the top of the equipment ring (203), an inflatable sealing ring (209) is provided on the inner side of the sealing ring (204), and an air pipe (210) is provided on the outer wall of the sealing ring (204). The inflatable sealing ring (209) is connected to the air pipe (210).

6. A hydraulic pump adjustable seal apparatus as defined in claim 5, wherein: The air pipe (210) is equipped with a one-way valve inside, and the number of the air sealing rings (209) is set to multiple.

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