Filling machine oil cylinder structure with self-cleaning function
By adding an oil inlet cleaning pipe and a rotatable spray ball to the main oil inlet pipe of the filling machine's oil cylinder, the problem of incomplete cleaning during oil switching is solved, and the self-cleaning function inside the oil cylinder is realized, ensuring the cleanliness and safety of oil switching.
Patent Information
- Application Number
- CN202520726025.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-17
AI Technical Summary
During the oil switching process, the filling machine's oil cylinder is prone to incomplete cleaning due to overfilling or unfamiliarity with the operation, leading to cross-contamination of the oil.
Several oil inlet cleaning pipes are added to the main oil inlet pipe, and a rotatable spray ball is designed on it. The self-cleaning function inside the oil cylinder is realized by controlling the check valve and the spray ball.
It ensures thorough cleaning of the inside of the hydraulic cylinder, avoids cross-contamination of oil, has a simple structure, is easy to modify, reacts quickly, is reliable in control, and is low in cost.
Smart Images

Figure CN223839430U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of filling machine cylinder modification, specifically a filling machine cylinder structure with self-cleaning function. Background Technology
[0002] During the use of filling machine hydraulic cylinders, there are frequent situations where the oil type needs to be changed. At this time, it is necessary to use cleaning oil (the oil after the change) to thoroughly clean the inside of the cylinder to ensure a smooth oil change. Under normal circumstances (such as...) Figure 3 As shown in the diagram, during oil switching, the oil before switching is discharged directly from the oil cylinder's drain port. Then, the cleaning oil (the oil after switching) flows into the oil cylinder through the main oil inlet pipe, filling the cylinder completely. This process is then repeated to ensure the oil cylinder is thoroughly cleaned and the oil switching is smooth. However, if the oil cylinder is overfilled with the oil before switching, sticks to the walls, or the operator is unfamiliar with the switching procedure, the inside of the oil cylinder may not be cleaned properly, leading to cross-contamination of the oil. Utility Model Content
[0003] The purpose of this utility model is to provide a filling machine cylinder structure with a self-cleaning function, so as to solve the problem mentioned in the background art that when the oil in the cylinder is too full before switching, sticks to the wall, or the operator is not familiar with the switching operation, the inside of the oil cylinder may not be cleaned properly, resulting in cross-contamination of the oil.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a filling machine cylinder structure with self-cleaning function, comprising a cylinder body, an oil inlet main pipe installed on the cylinder body, and an oil outlet located on one side of the bottom of the cylinder body. The oil inlet main pipe is connected to several oil inlet cleaning pipes, the other end of which extends into the cylinder body and is equipped with a rotatable spray ball at its end. The oil inlet main pipe is vertically connected to the cylinder body, with its lower end extending into the cylinder body and its upper end protruding outside the cylinder body. A first one-way valve controlling the opening and closing of the oil inlet main pipe is located inside the oil inlet main pipe, below the oil inlet cleaning pipe. A second one-way valve controlling the opening and closing of the oil outlet is located at the oil outlet.
[0005] Preferably, a distributor is connected to the top of the main oil inlet pipe, and an oil inlet is provided on the upper middle part of one side of the distributor, with the other end of the oil inlet bent upwards.
[0006] Preferably, the main oil inlet pipe is vertically installed in the middle of the cylinder body via a pipe mounting component, and the length of the main oil inlet pipe extending into the cylinder body is greater than the distance between the bottom of the main oil inlet pipe and the bottom of the cylinder body.
[0007] Preferably, the first check valve is a DN80 butterfly valve, which is located inside the part of the main oil inlet pipe that is exposed outside the cylinder body, and the second check valve is a ball valve.
[0008] The oil drain port is connected to a ball valve. This structure is ingenious and reasonable, easy to process, and safer and more reliable.
[0009] Preferably, the number of oil inlet cleaning pipes is 2-3, using DN25 pipes. Each oil inlet cleaning pipe includes a horizontal section connecting to the main oil inlet pipe, a vertical section connecting to the rotatable spray ball, and a curved section connecting the horizontal and vertical sections.
[0010] Preferably, the cylinder body is cylindrical, with an inspection port and an observation port at its top. The inspection port and observation port are symmetrically arranged on both sides of the top of the cylinder body and are staggered from the oil inlet cleaning pipe.
[0011] Preferably, the bottom diameter of the cylinder body is 2000cm, the height is 686cm, the inner diameter of the main oil inlet pipe is 80cm, and the length of the main oil inlet pipe extending into the cylinder body is 367cm.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention adds several oil inlet cleaning pipes to the main oil inlet pipe and designs rotatable spray balls on the oil inlet cleaning pipes. When the oil in the cylinder is too full, sticks to the wall, or the operator is not familiar with the switching operation, the main oil inlet pipe can be closed by controlling the first one-way valve, and the inside of the cylinder body can be cleaned by the rotatable spray balls. This ensures the comprehensiveness of oil cleaning and prevents incomplete cleaning due to special reasons. The overall structure is simple, easy to modify, quick to respond, easy to control, reliable in performance, lightweight, and low in manufacturing cost. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model after being cut open;
[0015] Figure 2 This is a schematic diagram of the top surface of the present invention after it has been cut open;
[0016] Figure 3 This is a schematic diagram of the structure of the filling machine cylinder after being cut open (before modification) in the background art of this utility model;
[0017] In the diagram: 1. Cylinder body; 2. Main oil inlet pipe; 3. Oil inlet cleaning pipe; 4. Rotatable spray ball; 5. First check valve; 6. Distributor; 7. Oil inlet; 8. Pipeline installation parts; 9. Inspection port; 10. Observation port; 11. Oil drain port. Detailed Implementation
[0018] 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.
[0019] Example 1
[0020] Please see Figure 1 and 2 A filling machine cylinder structure with self-cleaning function includes a cylinder body 1, an oil inlet main pipe 2 installed on the cylinder body 1, and an oil outlet 11 located on one side of the bottom of the cylinder body 1. Several oil inlet cleaning pipes 3 are connected to the oil inlet main pipe 2. The other end of each oil inlet cleaning pipe 3 extends into the cylinder body 1 and is equipped with a rotatable spray ball 4 at its end. The oil inlet main pipe 2 is vertically connected to the cylinder body 1, with its lower end extending into the cylinder body 1 and its upper end protruding outside the cylinder body 1. A first one-way valve 5 is installed inside the oil inlet main pipe 2 to control its opening and closing. The first one-way valve 5 is located below the oil inlet cleaning pipes 3. A second one-way valve is installed at the oil outlet 11 to control its opening and closing. A distributor 6 is connected to the top of the oil inlet main pipe 2. An oil inlet 7 is located on the upper middle part of one side of the distributor 6, with the other end of the oil inlet 7 bent upwards. The main oil inlet pipe 2 is vertically installed in the middle of the cylinder body 1 via a pipe mounting component 8. The length of the main oil inlet pipe 2 extending into the cylinder body 1 is greater than the distance between the bottom of the main oil inlet pipe 2 and the bottom of the cylinder body 1. The first check valve 5 is a DN80 butterfly valve, located inside the portion of the main oil inlet pipe 2 that is exposed outside the cylinder body 1. The second check valve is a ball valve.
[0021] Example 2
[0022] There are two oil inlet cleaning pipes 3, each using DN25 pipes. Each oil inlet cleaning pipe 3 includes a horizontal section connecting to the main oil inlet pipe 2, a vertical section connecting to the rotatable spray ball 4, and a curved section connecting the horizontal and vertical sections. The cylinder body 1 is cylindrical, with an inspection port 9 and an observation port 10 at its top. The inspection port 9 and observation port 10 are symmetrically arranged on both sides of the top of the cylinder body 1 and are staggered from the oil inlet cleaning pipes 3. The bottom diameter of the cylinder body 1 is 2000 cm, and its height is 686 cm. The inner diameter of the main oil inlet pipe 2 is 80 cm, and the length of the main oil inlet pipe 2 extending into the cylinder body 1 is 367 cm.
[0023] The working process of this utility model is as follows: Under normal circumstances, when switching, the oil in the cylinder body (before switching) is discharged from the drain port, and the cleaning oil (after switching) directly enters the cylinder body from the main oil inlet pipe (at this time, because the oil pressure inside the cleaning inlet pipe is insufficient, the cleaning oil will not enter the cylinder body from the cleaning inlet pipe), filling the cylinder body, and then being discharged from the drain port. This step is repeated to achieve the purpose of cleaning the inside of the cylinder body and smoothly switching the oil.
[0024] When the cylinder body is overfilled with oil (before switching), has oil sticking to the walls, or the operator is unfamiliar with the process, it may not be cleaned thoroughly, leading to cross-contamination of the oil. In this case, close the first one-way valve. At this time, because the oil pressure inside the cleaning inlet pipe is sufficient, the cleaning oil will enter the cylinder body from the cleaning inlet pipe and clean the inside of the cylinder through the rotating spray ball (especially rinsing the inner wall of the cylinder body). This ensures the comprehensiveness of the oil cleaning and prevents incomplete cleaning due to special reasons.
[0025] The rotatable spray ball in this utility model is a conventional product purchased from the market. Any spray ball that can rotate freely and has sufficient spray pressure to spray and wash the inner wall of the oil cylinder can be used. Its specific structure, rotation principle and spray principle are all conventional technologies, so they will not be described in detail.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A filling machine cylinder structure with self-cleaning function, comprising a cylinder body (1), an oil inlet main pipe (2) installed on the cylinder body (1), and an oil outlet (11) disposed on one side of the bottom of the cylinder body (1), characterized in that: The main oil inlet pipe (2) is connected to several oil inlet cleaning pipes (3). The other end of the oil inlet cleaning pipe (3) extends into the cylinder body (1) and is equipped with a rotatable spray ball (4) at the end. The main oil inlet pipe (2) is vertically connected to the cylinder body (1). The lower end of the main oil inlet pipe (2) extends into the cylinder body (1) and the upper end of the main oil inlet pipe (2) protrudes outside the cylinder body (1). The inside of the main oil inlet pipe (2) is equipped with a first one-way valve (5) to control the opening and closing of the main oil inlet pipe (2). The first one-way valve (5) is located below the oil inlet cleaning pipe (3). The oil outlet (11) is equipped with a second one-way valve to control the opening and closing of the oil outlet (11).
2. The filling machine cylinder structure with self-cleaning function according to claim 1, characterized in that: A distributor (6) is connected to the top of the main oil inlet pipe (2). An oil inlet (7) is provided on the upper middle part of one side of the distributor (6), and the other end of the oil inlet (7) is bent upward.
3. The filling machine cylinder structure with self-cleaning function according to claim 1, characterized in that: The main oil inlet pipe (2) is vertically installed in the middle of the cylinder body (1) through a pipe installation component (8). The length of the main oil inlet pipe (2) extending into the cylinder body (1) is greater than the distance between the bottom of the main oil inlet pipe (2) and the bottom of the cylinder body (1).
4. The filling machine cylinder structure with self-cleaning function according to claim 1, characterized in that: The first check valve (5) is a DN80 butterfly valve, which is located inside the part of the main oil inlet pipe (2) that is exposed outside the cylinder body (1). The second check valve is a ball valve.
5. The filling machine cylinder structure with self-cleaning function according to claim 1, characterized in that: The number of oil inlet cleaning pipes (3) is 2-3, using DN25 pipes. Each oil inlet cleaning pipe (3) includes a horizontal section connecting the main oil inlet pipe (2), a vertical section connecting the rotatable spray ball (4), and a curved section connecting the horizontal section and the vertical section.
6. The filling machine cylinder structure with self-cleaning function according to claim 1, characterized in that: The cylinder body (1) is cylindrical, and its top is provided with an inspection port (9) and an observation port (10). The inspection port (9) and the observation port (10) are symmetrically arranged on both sides of the top of the cylinder body (1) and are staggered from the oil inlet cleaning pipe (3).
7. The filling machine cylinder structure with self-cleaning function according to claim 6, characterized in that: The bottom diameter of the cylinder body (1) is 2000cm, the height is 686cm, the inner diameter of the main oil inlet pipe (2) is 80cm, and the length of the part of the main oil inlet pipe (2) extending into the cylinder body (1) is 367cm.