Endoscope cleaning gas-liquid conversion device

Abstract

The utility model discloses an endoscope cleaning gas-liquid conversion device belongs to the field of cleaning, including gas-liquid conversion valve. The utility model has compared with prior art's advantage in that: the device is welded in the pipeline above the gas-liquid export pipeline gas pipe waterproof assembly, through the welding waterproof baffle bridge under the gas-liquid conversion valve shell gas pipe to limit the gas intake range, in this way, the sliding seal of high elasticity sealing washer on the outer wall of waterproof baffle bridge is convenient, and the displacement movement of high elasticity sealing washer is controlled by the diaphragm spring welded on the center rod of inverted dry shape channel conversion rod, makes high elasticity sealing washer separate and close like clutch's split and close disc, in order to guarantee the sealing, waterproof diaphragm will be pasted on the contact surface of diaphragm spring and liquid, to guarantee that after the press key reset, liquid will not enter the air inlet because of the lifting of inverted dry shape channel conversion rod bottom surface closing column.

Description

Technical Field

[0001] This utility model relates to the field of cleaning, specifically to an endoscope cleaning gas-liquid conversion device. Background Technology

[0002] In current endoscopic treatment procedures, the image of the endoscope lens is often blocked by the patient's excrement or blood. To remove these obstructions, a cleaning tube is installed on one side of the endoscope lens. The end of this tube is connected to an endoscope cleaning gas-liquid conversion device. Water is used to wash away the obstructions, and gas is used to remove water droplets, ensuring the cleanliness of the endoscope lens.

[0003] The existing endoscope cleaning gas-liquid switching device mainly consists of a gas-liquid switching valve housing, a reverse dry channel switching rod that controls the direction of the gas-liquid opening, and a push button connected to the top surface of the reverse dry channel switching rod. In order to ensure that the gas atmospheric pressure pipeline is always open, a return spring is usually installed between the push button and the gas-liquid switching valve housing to ensure that the push button can automatically rebound after reset.

[0004] However, during the rebound process, due to the upward lifting of the bottom sealing column of the inverted dry channel conversion rod, some liquid will simultaneously enter the pipe where the air inlet of the gas-liquid conversion valve body is located. Once the height of the air inlet of the gas-liquid conversion valve body is lower than the liquid backflow height, liquid will flow back into the air inlet of the gas-liquid conversion valve body, thus contaminating the air inlet pipe. Utility Model Content

[0005] The technical problem this invention aims to solve is that, during the resetting process of existing endoscope cleaning gas-liquid switching devices, liquid may flow back into the air inlet of the gas-liquid switching valve housing.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: an endoscope cleaning gas-liquid conversion device, including a gas-liquid conversion valve, the gas-liquid conversion valve including a gas-liquid conversion valve housing, an inverted dry channel conversion rod located inside the gas-liquid conversion valve housing, and a pressing key sleeved on the straight end of the inverted dry channel conversion rod, and a return spring is provided between the pressing key and the gas-liquid conversion valve housing;

[0007] The inverted dry channel conversion rod has a gas pipe waterproof assembly on its closed column center rod. The gas pipe waterproof assembly includes a waterproof baffle bridge located below the gas pipe of the gas-liquid conversion valve housing, a high-elasticity sealing ring sleeved on the outer wall end of the waterproof baffle bridge, a diaphragm spring on the center rod of the inverted dry channel conversion rod, and a waterproof membrane pasted on the outer wall end of the diaphragm spring. The top surface of the high-elasticity sealing ring is pasted on the inner wall surface of the diaphragm spring.

[0008] As an improvement, the side of the gas-liquid switching valve housing is provided with a gas-liquid outlet located in the center rod area of ​​the closed column of the inverted dry channel switching rod, a liquid inlet located below the closed column on the bottom surface of the inverted dry channel switching rod, and an air inlet located above the closed column on the top surface of the inverted dry channel switching rod. The diameter of the pipe where the gas-liquid outlet of the gas-liquid switching valve housing is located is smaller than the diameter of the pipes where the liquid inlet and the air inlet are located.

[0009] As an improvement, the straight end of the inverted dry channel conversion rod is provided with an L-shaped vent hole that communicates with the air inlet direction, and the inside of the pressing key is provided with an air exchange hole corresponding to the L-shaped vent hole.

[0010] As an improvement, sealing rings are provided on both the closed column side of the inverted dry channel conversion rod and the inner wall side of the pressing key.

[0011] As an improvement, a waterproof and breathable membrane is attached to the top surface of the L-shaped vent.

[0012] As an improvement, the upper and lower ends of the gas-liquid switching valve housing are both through holes, and the bottom end of the gas-liquid switching valve housing is provided with a valve cover welded to seal the bottom surface of the gas-liquid switching valve housing.

[0013] The advantages of this invention compared to existing technologies are as follows: This device welds a waterproof gas pipe assembly into the pipe above the gas-liquid outlet. A waterproof baffle bridge welded to the gas pipe below the gas-liquid switching valve housing restricts the gas intake range, facilitating the sliding seal of the high-elasticity sealing ring fitted on the outer wall of the waterproof baffle bridge. The displacement of the high-elasticity sealing ring is controlled by a diaphragm spring welded to the center rod of the inverted dry-shaped channel switching rod, allowing the high-elasticity sealing ring to separate and close like a clutch disc. To ensure sealing, a waterproof membrane is attached to the contact surface between the diaphragm spring and the liquid. This ensures that after the button is pressed to reset, no liquid will enter the air inlet due to the lifting of the sealing column at the bottom of the inverted dry-shaped channel switching rod. Attached Figure Description

[0014] Figure 1 This is a general structural diagram of an endoscope cleaning gas-liquid conversion device according to the present invention.

[0015] Figure 2 This is a cross-sectional view of the overall structure of an endoscope cleaning gas-liquid conversion device according to this utility model.

[0016] Figure 3 This is an exploded view of the overall structure of an endoscope cleaning gas-liquid conversion device according to this utility model.

[0017] Figure 4 This is an exploded view of the tracheal waterproof component of an endoscope cleaning gas-liquid conversion device according to this utility model.

[0018] Figure 5This is a structural diagram of a waterproof baffle bridge for an endoscope cleaning gas-liquid conversion device according to this utility model.

[0019] As shown in the figure: 1. Gas-liquid switching valve; 11. Gas-liquid switching valve housing; 111. Gas-liquid outlet; 112. Liquid inlet; 113. Air inlet; 12. Inverted dry channel switching rod; 121. L-shaped vent hole; 13. Press button; 131. Vent hole; 14. Return spring; 15. Valve cover; 2. Air pipe waterproof assembly; 21. Waterproof baffle bridge; 22. High elasticity sealing ring; 23. Diaphragm spring; 24. Waterproof diaphragm; 3. Sealing ring; 4. Waterproof and breathable membrane. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] As per the instruction manual Figure 1 , 2 As shown in Figure 3, the device includes a gas-liquid switching valve 1. The gas-liquid switching valve 1 includes a gas-liquid switching valve housing 11, a reverse-dry channel switching rod 12 located inside the gas-liquid switching valve housing 11, and a push button 13 sleeved on the straight end of the reverse-dry channel switching rod 12, making it a manual reversing valve that changes the output type by manually pressing the push button 13. In order to keep the gas-liquid switching valve 1 fixed in one state under normal conditions, a return spring 14 is provided between the push button 13 and the gas-liquid switching valve housing 11. The elastic force of the return spring 14 ensures that the push button 13 can automatically reset when released. In order to facilitate the overall assembly of the gas-liquid switching valve 1, and to ensure its sealing, the upper and lower ends of the gas-liquid switching valve housing 11 are through holes, and the bottom end of the gas-liquid switching valve housing 11 is provided with a valve cover 15 welded to seal the bottom surface of the gas-liquid switching valve housing 11.

[0022] The gas-liquid switching valve housing 11 has a gas-liquid outlet 111 located in the center of the closed column of the inverted dry channel switching rod 12, a liquid inlet 112 located below the closed column on the bottom surface of the inverted dry channel switching rod 12, and an air inlet 113 located above the closed column on the top surface of the inverted dry channel switching rod 12. The inverted dry channel switching rod 12 includes a water seal block located at the bottom end of the inverted dry channel switching rod 12, an air seal block located at the center of the inverted dry channel switching rod 12, and a straight rod connecting the push button 13. In order to facilitate the sealing of the water seal block and the air seal block, the diameter of the pipe where the gas-liquid outlet 111 of the gas-liquid switching valve housing 11 is located is smaller than the diameter of the pipe where the liquid inlet 112 and the air inlet 113 are located. The closed column side of the inverted dry channel switching rod 12 and the inner wall side of the push button 13 are both provided with sealing rings 3; thereby ensuring the sealing performance of the water seal block or the air seal block when closed.

[0023] To ensure stable air pressure inside the endoscope's tubing when no air or water is being introduced, the straight end of the inverted dry channel conversion rod 12 is provided with an L-shaped vent 121 that communicates with the air inlet 113. The inside of the pressing button 13 is provided with a ventilation hole 131 corresponding to the L-shaped vent 121. The ventilation hole 131 and the L-shaped vent 121 ensure that the air pressure inside and outside the endoscope's tubing is consistent. To prevent external liquid from entering the gas-liquid outlet 111 through the ventilation hole 131, a waterproof and breathable membrane 4 is attached to the top surface of the L-shaped vent 121.

[0024] As per the instruction manual Figure 1 , 3 As shown in Figure 4, to prevent some liquid from entering the pipe where the air inlet 113 is located when the liquid inlet 112 is closed, a gas pipe waterproof assembly 2 is provided on the central rod of the closed column of the inverted dry channel conversion rod 12. The gas pipe waterproof assembly 2 includes a waterproof baffle bridge 21 located below the gas pipe of the gas-liquid conversion valve housing 11, a high-elasticity sealing ring 22 sleeved on the outer wall of the waterproof baffle bridge 21, a diaphragm spring 23 on the central rod of the inverted dry channel conversion rod 12, and a waterproof membrane 24 pasted on the outer wall of the diaphragm spring 23. While supporting the diaphragm spring 23 through the top surface of the waterproof baffle bridge 21, it ensures that the high-elasticity sealing ring 22 can completely seal the vent groove on the side of the waterproof baffle bridge 21. When the pressing button 13 is pressed down, the air seal block and the water seal block are pressed down simultaneously, so that... The top channel of the pipe where the gas-liquid outlet 111 is located is closed, while the bottom channel of the pipe where the gas-liquid outlet 111 is located is open, so that liquid flows out of the gas-liquid outlet 111. At this time, the center position of the diaphragm spring 23 is pressed down, causing the high elastic sealing ring 22 to rise accordingly, thereby closing the venting groove on the side of the waterproof baffle bridge 21. Similarly, during the reset, the center position of the diaphragm spring 23 is lifted, causing the high elastic sealing ring 22 to press down accordingly, thereby opening the venting groove on the side of the waterproof baffle bridge 21. In order to ensure the waterproof performance of the diaphragm spring 23, a waterproof and breathable membrane 4 is attached to the top end of the L-shaped vent 121. In order to ensure that the high elastic sealing ring 22 can slide with the movement of the diaphragm spring 23, the top surface of the high elastic sealing ring 22 is attached to the inner wall surface of the diaphragm spring 23 with waterproof adhesive.

[0025] In specific implementation of this utility model, if no one presses the press button 13, the air seal block is in the normally open state, and air is connected through the air exchange hole 131, the L-shaped vent hole 121 and the gas-liquid outlet 111 to ensure the normal pressure state inside the endoscope. After starting the air pump connected to the air inlet 113, the air exchange hole 131 needs to be sealed with a finger to ensure normal unidirectional transmission of flushing gas. Similarly, when the press button 13 is pressed, the liquid in the liquid inlet 112 flows from the gas-liquid outlet 111 into the flushing hole in the endoscope to flush the endoscope lens. When the press button 13 is pressed, the diaphragm spring 23 is pressed down, causing the high elastic sealing ring 22 to be lifted, thereby sealing the side groove of the waterproof baffle bridge 21 and preventing the flushing liquid from flowing back into the pipe where the air inlet 113 is located after reset.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An endoscope cleaning gas-liquid switching device, comprising a gas-liquid switching valve (1), wherein the gas-liquid switching valve (1) comprises a gas-liquid switching valve housing (11), an inverted dry-shaped channel switching rod (12) located inside the gas-liquid switching valve housing (11), and a pressing key (13) sleeved on the straight end of the inverted dry-shaped channel switching rod (12), and a return spring (14) is provided between the pressing key (13) and the gas-liquid switching valve housing (11), characterized in that: The inverted dry channel conversion rod (12) has a gas pipe waterproof assembly (2) on the closed column center rod. The gas pipe waterproof assembly (2) includes a waterproof baffle bridge (21) located below the gas pipe of the gas-liquid conversion valve housing (11), a high elastic sealing ring (22) sleeved on the outer wall end of the waterproof baffle bridge (21), a diaphragm spring (23) on the center rod of the inverted dry channel conversion rod (12), and a waterproof membrane (24) pasted on the outer wall end of the diaphragm spring (23). The top surface of the high elastic sealing ring (22) is pasted on the inner wall surface of the diaphragm spring (23).

2. The endoscope cleaning gas-liquid conversion device according to claim 1, characterized in that: The gas-liquid switching valve housing (11) has a gas-liquid outlet (111) located in the center rod area of ​​the closed column of the inverted dry channel switching rod (12), a liquid inlet (112) located below the closed column on the bottom surface of the inverted dry channel switching rod (12), and an air inlet (113) located above the closed column on the top surface of the inverted dry channel switching rod (12). The diameter of the pipe where the gas-liquid outlet (111) of the gas-liquid switching valve housing (11) is located is smaller than the diameter of the pipe where the liquid inlet (112) and the air inlet (113) are located.

3. The endoscope cleaning gas-liquid conversion device according to claim 2, characterized in that: The straight end of the inverted dry channel conversion rod (12) is provided with an L-shaped vent (121) that communicates with the air inlet (113), and the inside of the pressing key (13) is provided with an air exchange hole (131) corresponding to the L-shaped vent (121).

4. The endoscope cleaning gas-liquid conversion device according to claim 1, characterized in that: The closed column side of the inverted dry channel conversion rod (12) and the inner wall side of the pressing key (13) are both provided with sealing rings (3).

5. The endoscope cleaning gas-liquid conversion device according to claim 3, characterized in that: A waterproof and breathable membrane (4) is attached to the top end of the L-shaped vent (121).

6. The endoscope cleaning gas-liquid conversion device according to claim 1, characterized in that: The upper and lower ends of the gas-liquid switching valve housing (11) are both through holes, and the bottom end of the gas-liquid switching valve housing (11) is provided with a valve cover (15) that is welded to seal the bottom surface of the gas-liquid switching valve housing (11).

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