A film type pneumatic reversing structure for a gastric lavage machine

Abstract

The utility model relates to a gastric lavage machine technical field, concretely relates to a kind of film type pneumatic reversing structure for gastric lavage machine, including shell, water storage cavity is equipped in shell interior, multiple uniformly distributed baffle are also equipped in water storage cavity, installation hole is also equipped in the center of baffle, movable transmission shaft is also adapted to install in installation hole department;The left and right sides of shell are each equipped with connecting piece;Each group connecting piece includes communicating pipe, vice cover, mobile lid and main lid;Communicating pipe one end is connected with shell, and other end connects vice cover;Mobile lid adopts sealing silica gel cover and can be deformed, and is set between main lid and vice cover, the both ends of transmission shaft are fixedly connected mobile lid;First sealed cavity is formed between left mobile lid and left main lid, and second sealed cavity is formed between right mobile lid and right main lid;Each communicating pipe is connected with water pipe;Drive source is also connected in left main lid side.The utility model reversing switching operation is simple, avoids cross infection, and improves the operation effect of gastric lavage machine reversing control.

Description

Technical Field

[0001] This utility model relates to the field of gastric lavage machine technology, specifically to a thin-film pneumatic reversing structure for a gastric lavage machine. Background Technology

[0002] A gastric lavage machine is a medical device suitable for use in medical units and emergency centers to rescue patients suffering from food poisoning or ingestion of poison, as well as for preoperative gastric lavage. An electric gastric lavage machine generally consists of a main unit, liquid tubing, and a lavage tube. If the lavage tube is an externally purchased product, it should be a qualified product that meets product registration requirements and has a registration certificate. If the lavage tube is manufactured by the company itself, relevant performance indicators for the lavage tube should be added to the product registration standard. Some instruments also have a collection bottle. Under the power of positive and negative pressure pumps, the electric gastric lavage machine controls two pneumatic-controlled liquid volume control units according to the gastric lavage program via a solenoid valve group. Simultaneously, it draws liquid from the stomach and the clean liquid tank. Through a liquid path switching device, the reversing control system switches from negative pressure to positive pressure, discharging liquid into the stomach and the waste liquid tank respectively. However, the reversing control structure of traditional gastric lavage machines is relatively simple, resulting in poor performance and a high risk of cross-infection. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing gastric lavage machines, this utility model provides a thin-film pneumatic reversing structure for gastric lavage machines that has a reasonable structural design, simple reversing operation, avoids cross-infection, and improves the reversing control effect of the gastric lavage machine.

[0004] This utility model achieves the above objectives by adopting the following technical solution:

[0005] A thin-film pneumatic reversing structure for a gastric lavage machine includes a housing, which is distributed on both sides and has a water storage chamber inside. The water storage chamber also contains multiple evenly distributed partitions, each with a mounting hole at its center. A movable drive shaft is fitted at the mounting hole. Connectors are provided on both sides of the housing. Each set of connectors includes a connecting pipe, a secondary cover, a movable cover, and a main cover. One end of the connecting pipe is connected to the housing, and the other end is connected to the secondary cover; the two are integrally formed. The main cover is connected to the secondary cover by screws. The movable cover is a deformable, sealing silicone cover and is positioned between the main cover and the secondary cover. Both ends of the drive shaft are fixedly connected to the movable cover. A first sealing cavity is formed between the left movable cover and the left main cover, and a second sealing cavity is formed between the right movable cover and the right main cover. Each connecting pipe is connected to a water inlet pipe. A drive source is also connected to the left side of the main cover.

[0006] Preferably, the cross-section of the inner wall of the secondary cover is a left-concave arc-shaped structure, which is adapted to the installation of the movable cover; the cross-section of the inner wall of the main cover is a right-concave arc-shaped structure, which is adapted to the installation of the movable cover.

[0007] More preferably, the main cover is also provided with an exhaust hole.

[0008] Preferably, a Hall effect sensor is also fitted into the right side of the main cover, and a magnet is also provided at the connection between the drive shaft and the right side movable cover.

[0009] More preferably, the movable cover has a funnel-shaped structure.

[0010] Preferably, the top of the housing is also provided with a connecting and fixing cover, and the two are fixedly connected by bolts; a sealing gasket is also provided between the connecting and fixing cover and the housing, and a water inlet pipe is also provided on one side of the connecting and fixing cover.

[0011] Preferably, the driving source is an air pump, and the main cover on the left side is provided with an air inlet port, which is connected to the air pump.

[0012] Compared with the prior art, the advantages of this utility model are as follows: The reversing structure is reasonably designed. By setting a specially structured shell as a transfer point, the transmission capacity of the optimized design is improved. At the same time, the cooperation of the drive shaft, the movable covers distributed on both sides, and the drive source completes the movement of the drive shaft by deforming the movable covers driven by the drive source. With the help of the two opposing forces of positive pressure (thrust) and negative pressure (suction) generated by the strong drive source, the silicone covers are acted on, thereby pushing the drive shaft to move in the required direction. The silicone covers at both ends have a certain interference fit with the shell, and the sealing end of the silicone cover undergoes a certain deformation to achieve a seal. At the end of the movement, the Hall sensor and the magnet cooperate to accurately detect the position and ensure the sealing effect. The reversing operation of this utility model is simple, avoids cross-infection, and greatly improves the reversing control effect of the gastric lavage machine. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0014] Figure 1 This is an exploded view of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the positive pressure air supply of this utility model. Figure 1 ;

[0016] Figure 3 This is a cross-sectional view of the positive pressure air supply of this utility model. Figure 2 ;

[0017] Figure 4This is a cross-sectional view of the negative pressure air intake of this utility model. Figure 1 ;

[0018] Figure 5 This is a cross-sectional view of the negative pressure air intake of this utility model. Figure 2 .

[0019] In the diagram: 1. Housing; 2. Water storage chamber; 3. Partition plate; 4. Mounting hole; 5. Drive shaft; 6. Connector; 61. Connecting pipe; 62. Secondary cover; 63. Movable cover; 64. Main cover; 65. Air inlet port; 7. First sealing chamber; 8. Second sealing chamber; 9. Water inlet pipe; 10. Exhaust port; 11. Hall effect sensor; 12. Magnet; 13. Connecting and fixing cover; 14. Water inlet pipe; 15. Drive source. 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, in the specific embodiments of this utility model, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising one" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "equipped" 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, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example: Figures 1 to 3 As shown:

[0024] A thin-film pneumatic reversing structure for a gastric lavage machine includes a housing 1, which is distributed laterally and has a water storage chamber 2 inside for storing water. The water storage chamber 2 also has multiple evenly distributed baffles 3 to prevent excessive water flow and provide a buffering effect. Figure 2 and Figure 3 As shown: A mounting hole 4 is also provided in the center of the partition 3, and a movable drive shaft 5 is adapted to be installed at the mounting hole 4; specifically, the inner diameter of the mounting hole is larger than the outer diameter of the drive shaft, and the entire water storage chamber is a continuous structure to ensure the movement of the basic water flow and the use of the gastric lavage machine. In a preferred embodiment, connecting parts 6 are provided on both the left and right sides of the housing 1. Specifically, as... Figure 1 As shown: Each set of connectors 6 includes a connecting pipe 61, a secondary cover 62, a movable cover 63, and a main cover 64. One end of the connecting pipe 61 is connected to the housing 1, and the other end is connected to the secondary cover 62. The connecting pipe and the secondary cover are integrally formed. The connecting pipe and the housing can be fixed by welding. The main cover 64 is connected to the secondary cover 62 by screws. The movable cover 63 is a deformable silicone sealant and is located between the main cover 64 and the secondary cover 62. All three have the same external dimensions, forming a sealed environment. The inner wall of the secondary cover 62 on the right has a left-concave arc-shaped cross-section, which is adapted to the installation of the corresponding movable cover 63. The inner wall of the main cover 64 on the right has a right-concave arc-shaped cross-section, which is adapted to the installation of the movable cover 63. The secondary covers on the left and right are symmetrical. Specifically, as shown... Figure 2 The structure shown.

[0025] like Figure 1 and Figure 2 As shown: Both ends of the drive shaft 5 are fixedly connected to the movable cover 63. A first sealing cavity 7 is formed between the left movable cover 63 and the left main cover 64, and a second sealing cavity 8 is formed between the right movable cover 63 and the right main cover 64; this facilitates the deformation of the movable cover under the action of the drive source, thereby realizing the movement of the drive shaft and the switching of the liquid path. Each of the connecting pipes 61 is connected to a water inlet pipe 9; this facilitates the switching of the liquid path and realizes the reversing control of the gastric lavage machine. A drive source 15 is also connected to one side of the left main cover 64. The drive source 15 is an air pump. The left main cover 64 is provided with an air inlet port 65, and the air pump is connected to the air inlet port 65. The drive source (air pump) switches between positive and negative pressure states by intake or intake of air.

[0026] In this embodiment, the main cover 64 is also provided with an exhaust hole 10 to discharge excess gas from the sealed cavity. A Hall sensor element 11 is also embedded in the right side of the main cover 64. The Hall sensor element, also known as a Hall sensor, is a magnetic field sensor based on the Hall effect. The Hall effect is a type of magnetoelectric effect. Based on the Hall effect, elements made of semiconductor materials are called Hall elements. They have advantages such as sensitivity to magnetic fields, simple structure, small size, wide frequency response, large output voltage variation, and long service life. Therefore, they are widely used in measurement, automation, computer, and information technology fields. A magnet 12 is also provided at the connection between the drive shaft 5 and the right-side movable cover 63 to cooperate with the Hall sensor element in sensing whether the drive shaft has reached the correct position. The movable cover 63 has a funnel-shaped structure, which facilitates the formation of a sealed environment after pressure deformation. A connecting and fixing cover 13 is also provided at the top of the housing 1, and the two are fixedly connected by bolts. A sealing gasket is also provided between the connecting and fixing cover 13 and the housing 1. A water inlet pipe 14 is also provided on one side of the connecting and fixing cover 13 to ensure appropriate water replenishment.

[0027] Specific working principle: such as Figure 2 and Figure 3 As shown: Positive pressure air supply at intake port 65:

[0028] At the initial position, such as Figure 2 As shown: When the drive source generates positive pressure (thrust), gas enters through the air inlet port 65, pushing the sealing silicone cover (movable cover 63) to the right. Specifically, the connection between the sealing silicone cover and the drive shaft is pushed to the right by the positive pressure thrust from the left air inlet port 65; this, in turn, pushes the entire drive shaft to the right. When the Hall sensor on the right detects the magnet, it indicates that the position has been reached, that is, the preset position has been reached. The drive source stops, specifically, the drive source and the Hall sensor maintain a signal connection, preferably using a PLC controller for signal connection and control. This part is prior art and will not be described in detail. At this time, the right water inlet pipe will be connected to the water source in the water storage chamber inside the shell, while the left water inlet pipe remains closed; as Figure 3 The structure is shown. (During this process, the air in the second sealed chamber will be discharged through the vent on the right main cover).

[0029] Negative pressure intake at the air inlet port:

[0030] like Figure 4 As shown: When the drive source generates negative pressure (suction), the gas in the first sealed chamber is discharged through the air inlet port 65. The resulting negative pressure suction pulls the sealing silicone cover (movable cover 64) to the left, thereby pushing the entire drive shaft to move to the left. When the Hall sensor detects that the magnet on the drive shaft has reached its position (reset), the drive source stops. At this time, the left water inlet pipe will connect to the water source in the water storage chamber inside the housing, while the right water inlet pipe remains closed. Figure 5 The structure shown.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thin-film pneumatic reversing structure for a gastric lavage machine, characterized in that: The device includes a housing (1), which is distributed on the left and right sides and has a water storage chamber (2) inside. The water storage chamber (2) also has multiple evenly distributed partitions (3). A mounting hole (4) is provided in the center of the partition (3), and a movable drive shaft (5) is adapted to be installed at the mounting hole (4). Connectors (6) are provided on both the left and right sides of the housing (1). Each set of connectors (6) includes a connecting pipe (61), a secondary cover (62), a movable cover (63), and a main cover (64). One end of the connecting pipe (61) is connected to the housing (1), and the other end is connected to the secondary cover (62), and the two are integrally formed. Structure: The main cover (64) is connected to the secondary cover (62) by screws; the movable cover (63) is a sealing silicone cover and is deformable, and is located between the main cover (64) and the secondary cover (62); both ends of the drive shaft (5) are fixedly connected to the movable cover (63); a first sealing cavity (7) is formed between the movable cover (63) on the left and the main cover (64) on the left, and a second sealing cavity (8) is formed between the movable cover (63) on the right and the main cover (64) on the right; each of the connecting pipes (61) is connected to a water receiving pipe (9); a drive source (15) is also connected to one side of the main cover (64) on the left.

2. The thin-film pneumatic reversing structure for a gastric lavage machine according to claim 1, characterized in that: The cross-section of the inner wall of the secondary cover (62) distributed on the right side is a left-concave arc structure, which is adapted to the installation of the corresponding movable cover (63); the cross-section of the inner wall of the main cover (64) on the right side is a right-concave arc structure, which is adapted to the installation of the movable cover (63).

3. The thin-film pneumatic reversing structure for a gastric lavage machine according to claim 2, characterized in that: The main cover (64) is also provided with an exhaust hole (10).

4. The thin-film pneumatic reversing structure for a gastric lavage machine according to claim 1, characterized in that: A Hall sensor (11) is also embedded on the right side of the main cover (64), and a magnet (12) is also provided at the connection between the drive shaft (5) and the right side distribution movable cover (63).

5. The thin-film pneumatic reversing structure for a gastric lavage machine according to claim 4, characterized in that: The movable cover (63) has a funnel-shaped structure.

6. The thin-film pneumatic reversing structure for a gastric lavage machine according to claim 1, characterized in that: The top of the housing (1) is also provided with a connecting and fixing cover (13), and the two are fixedly connected by bolts; a sealing gasket is also provided between the connecting and fixing cover (13) and the housing (1), and a water inlet pipe (14) is also provided on one side of the connecting and fixing cover (13).

7. The thin-film pneumatic reversing structure for a gastric lavage machine according to claim 1, characterized in that: The drive source (15) is an air pump, and the main cover (64) on the left side is provided with an air inlet (65), and the air pump is connected to the air inlet (65).

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