A negative pressure suction gas source terminal

Abstract

This utility model discloses a negative pressure suction air source terminal, including a housing. A first sleeve is fixedly connected to the left side of the inner wall of the housing, and a second sleeve is slidably connected inside the first sleeve. A compression spring is fixedly connected to the left side of the inner wall of the first sleeve. This utility model uses a filter element to block foreign objects that may enter the plug tube, preventing vent blockage. When finished, the positioning mechanism can be pulled upwards to release the positioning of the plug tube, and then the plug tube can be rotated to rotate the external threaded ring, causing it to separate from the internal threaded ring. The plug tube can then be pulled out from the housing, bringing out the external threaded ring for cleaning the filter element. After the external threaded ring is removed, it can be directly pulled out from the left side of the plug tube. This achieves the effect of protecting the device's ventilation structure and vents by setting a filter element, preventing foreign objects from blocking the vents during negative pressure suction and affecting the negative pressure effect, while also facilitating filter element cleaning and user convenience.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a negative pressure suction gas source terminal. Background Technology

[0002] The negative pressure suction air source terminal is part of the medical negative pressure suction system. The negative pressure source of the system is the vacuum unit in the central suction room, which uses suction to bring the suction system pipeline to the required negative pressure value, generating suction at the terminal of the operating room, emergency room and various wards to supply medical use.

[0003] A search revealed Chinese patent application number 201210055389.0, which discloses a negative pressure suction air source terminal. The terminal includes a valve body base, a positioning sleeve fixed to the valve body base, a colored ring fixed to the positioning sleeve, and a button pressure ring fixed outside the colored ring. A valve core is also provided inside the valve body base, and a valve core sleeve is provided on the valve core, which contacts a plug. The key feature is that an air inlet is provided on the side wall of the valve body base, connected to a pipe. A valve seat spring chamber is also provided within the cavity of the valve body base, and a valve core spring chamber is provided at one end of the valve core. A valve core spring is located between the valve body base and the valve core, situated within the valve seat spring chamber and the valve core spring chamber. This invention provides a simple and convenient negative pressure suction air source terminal. Through a sealed structural design, it completely isolates the one-way valve spring from contact with contaminants, making the spring less susceptible to corrosion and extending the service life of the air source terminal, ensuring its usability for medical personnel.

[0004] Although the aforementioned patent, through its sealed structural design, completely isolates the one-way valve spring from contact with contaminants, making the spring less susceptible to corrosion and thus extending the service life of the gas source terminal and ensuring its use by medical personnel, it cannot effectively protect the air inlet of the valve core during actual use. Foreign objects can easily enter the valve core during negative pressure suction, causing blockage of the air inlet and affecting the negative pressure suction effect, thus causing inconvenience to the user.

[0005] Therefore, it is necessary to modify it by installing a filter element to protect the device's ventilation structure and vents, so as to prevent foreign objects from clogging the vents during negative pressure suction and affecting the negative pressure effect. At the same time, it is convenient to clean the filter element and make it convenient for users. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a negative pressure suction air source terminal. This terminal features a filter element that protects the device's ventilation structure and vents, preventing foreign objects from clogging the vents during negative pressure suction and affecting the negative pressure effect. It also facilitates filter element cleaning and user convenience. This solution addresses the problem of ineffective protection of the valve core's air inlet, which allows foreign objects to easily enter the valve core during negative pressure suction, causing blockage and affecting the suction effect, thus inconveniencing the user.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure suction air source terminal, comprising a housing, a first sleeve fixedly connected to the left side of the inner wall of the housing, a second sleeve slidably connected inside the first sleeve, a compression spring fixedly connected to the left side of the inner wall of the first sleeve, the right end of the compression spring fixedly connected to the right side of the inner wall of the second sleeve, a sealing ring fixedly connected to the center inside the housing, an air-sealing ring fixedly connected to the right side of the surface of the second sleeve, the right side of the air-sealing ring fitting against the left side of the sealing ring, a movable cylinder fixedly connected to the right side of the air-sealing ring, the surface of the movable cylinder slidably connected to the inner surface of the sealing ring. The surface of the movable cylinder has a number of evenly distributed vent holes. An internal threaded ring is fixedly connected to the right side of the movable cylinder. An external threaded ring is threadedly connected to the right side of the internal threaded ring. A filter element is fixedly connected inside the external threaded ring. A magnetic sealing ring is fixedly connected to the right side of the external threaded ring. A sealing ring is fixedly connected to the right side of the inside of the housing. A plug tube is fitted inside the sealing ring. The left side of the plug tube is magnetically connected to the right side of the magnetic sealing ring. An air extraction pipe is connected to the left side of the top of the housing. A positioning mechanism is provided on the right side of the top of the housing. A slot for use with the positioning mechanism is provided on the right side of the top of the plug tube.

[0008] As a preferred embodiment of this utility model, the positioning mechanism includes a locking rod disposed on the top right side of the outer casing, a baffle plate fixedly connected to the top of the locking rod, a tension spring sleeved on the surface of the locking rod, the top end of the tension spring being fixedly connected to the bottom of the baffle plate, and the bottom end of the tension spring being fixedly connected to the top of the casing.

[0009] As a preferred embodiment of this utility model, a piston ring is fitted on the surface of the clamping rod, the outer surface of the piston ring is fixedly connected to the inner wall of the housing, a groove is provided at the bottom of the clamping rod, and a ball is rolled inside the groove, the surface of the ball is in contact with the surface of the plug tube.

[0010] As a preferred embodiment of this utility model, a number of evenly distributed insertion rods are fixedly connected to the right side of the magnetic sealing ring, and a number of evenly distributed slots are opened on the left side of the plug tube, with the surface of the insertion rods fitting against the inner wall of the slots.

[0011] In a preferred embodiment of this invention, a sealing ring is fixedly connected to the left side of the closed ring, and an annular sealing groove is provided on the right side of the air-sealing ring, with the surface of the sealing ring fitting against the inner wall of the annular sealing groove.

[0012] As a preferred embodiment of this invention, a sealing gasket is fixedly connected to the surface of the bottom end of the air extraction pipe, and the surface of the sealing gasket is fixedly connected to the inner wall of the housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model involves pushing the plug tube to the left, causing its left side to move the magnetic sealing ring, external threaded ring, internal threaded ring, moving cylinder, and second sleeve to the left until the second sleeve is fully inserted into the first sleeve and the compression spring contracts. The slot and positioning mechanism are then aligned on the same axis. The positioning mechanism moves downwards into the slot to fix the plug tube, causing the moving cylinder to slide to the left. The air-sealing ring moves away from the sealing ring, and the vent is located to the left of the sealing ring. Then, the suction pipe is connected to a suction device to create negative pressure inside the left side of the housing. By opening the air-sealing ring, airflow passes through the vent and connects with the inside of the plug tube, creating negative pressure for use. The filter element blocks any foreign objects that may enter the plug tube, preventing blockage of the vent. When finished, the positioning mechanism can be pulled upwards to release the plug tube from its position. Then, the plug tube can be rotated, causing the external threaded ring to rotate and separate from the internal threaded ring. The plug tube can then be pulled out of the housing, bringing out the external threaded ring for cleaning the filter element. After removing the external threaded ring, it can be pulled out directly from the left side of the plug tube. This achieves the effect of protecting the device's ventilation structure and vent by using a filter element, preventing foreign objects from blocking the vent during negative pressure suction and affecting the negative pressure effect. It also facilitates cleaning of the filter element and makes the device convenient for users.

[0015] 2. This utility model uses a combination of a locking rod, a baffle, and a tension spring. When the plug tube is pushed to the left and inserted into the slot to align with the locking rod, the baffle is pulled downward by the tension spring, causing the locking rod to move downward into the slot to fix the plug tube, thus facilitating user operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0019] Figure 4 This utility model Figure 2 A magnified structural diagram of B in the diagram.

[0020] In the diagram: 1. Housing; 2. First sleeve; 3. Second sleeve; 4. Compression spring; 5. Sealing ring; 6. Air-sealing ring; 7. Moving cylinder; 8. Vent hole; 9. Internal threaded ring; 10. External threaded ring; 11. Filter element; 12. Magnetic sealing ring; 13. Sealing ring; 14. Plug tube; 15. Suction tube; 16. Positioning mechanism; 17. Slot; 18. Locking rod; 19. Baffle; 20. Tension spring; 21. Piston ring; 22. Ball bearing; 23. Insert rod; 24. Slot; 25. Sealing ring; 26. Annular sealing groove; 27. Sealing gasket. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 4 As shown, the present invention provides a negative pressure suction air source terminal, comprising a housing 1, a first sleeve 2 fixedly connected to the left side of the inner wall of the housing 1, a second sleeve 3 slidably connected inside the first sleeve 2, a compression spring 4 fixedly connected to the left side of the inner wall of the first sleeve 2, the right end of the compression spring 4 fixedly connected to the right side of the inner wall of the second sleeve 3, a sealing ring 5 fixedly connected to the center inside the housing 1, an air-sealing ring 6 fixedly connected to the right side of the surface of the second sleeve 3, the right side of the air-sealing ring 6 fitting against the left side of the sealing ring 5, a movable cylinder 7 fixedly connected to the right side of the air-sealing ring 6, the surface of the movable cylinder 7 slidably connected to the inner surface of the sealing ring 5, and a plurality of openings on the surface of the movable cylinder 7. The vent holes 8 are evenly distributed. An internal threaded ring 9 is fixedly connected to the right side of the moving cylinder 7. An external threaded ring 10 is threadedly connected to the right side of the internal threaded ring 9. A filter element 11 is fixedly connected inside the external threaded ring 10. A magnetic sealing ring 12 is fixedly connected to the right side of the external threaded ring 10. A sealing ring 13 is fixedly connected to the right side of the inside of the housing 1. A plug tube 14 is attached to the inside of the sealing ring 13. The left side of the plug tube 14 is magnetically connected to the right side of the magnetic sealing ring 12. An air extraction pipe 15 is connected to the left side of the top of the housing 1. A positioning mechanism 16 is provided on the right side of the top of the housing 1. A slot 17 for use with the positioning mechanism 16 is opened on the right side of the top of the plug tube 14.

[0023] refer to Figure 2 The positioning mechanism 16 includes a locking rod 18 located on the top right side of the housing. A baffle 19 is fixedly connected to the top of the locking rod 18. A tension spring 20 is sleeved on the surface of the locking rod 18. The top end of the tension spring 20 is fixedly connected to the bottom of the baffle 19, and the bottom end of the tension spring 20 is fixedly connected to the top of the housing 1.

[0024] As a technical optimization of this utility model, by setting up the cooperation of the locking rod 18, the baffle 19 and the tension spring 20, when the plug tube 14 is pushed to the left and inserted into the slot 17 to align with the locking rod 18, the baffle 19 is pulled downward by the tension spring 20, which drives the locking rod 18 to move downward into the slot 17 to fix the plug tube 14, making it more convenient for the user.

[0025] refer to Figure 2 A piston ring 21 is fitted on the surface of the lever 18. The outer surface of the piston ring 21 is fixedly connected to the inner wall of the housing 1. A groove is provided at the bottom of the lever 18, and a ball bearing 22 is rolled inside the groove. The surface of the ball bearing 22 is in contact with the surface of the plug tube 14.

[0026] As a technical optimization of this utility model, by setting the piston ring 21, the locking rod 18 moves more smoothly, avoiding the situation where the locking rod 18 shakes and gets stuck, affecting normal use. By setting the ball bearing 22, the friction between the bottom of the locking rod 18 and the surface of the plug tube 14 is reduced, avoiding the situation where the plug tube 14 scratches the locking rod 18 and is damaged when inserted.

[0027] refer to Figure 3 A number of evenly distributed insertion rods 23 are fixedly connected to the right side of the magnetic sealing ring 12, and a number of evenly distributed slots 24 are opened on the left side of the plug tube 14, with the surface of the insertion rod 23 fitting against the inner wall of the slot 24.

[0028] As a technical optimization of this utility model, by setting the plug rod 23 and the slot 24 to work together, when the filter element 11 needs to be disassembled, the plug tube 14 and the slot 24 rotate accordingly, causing the plug rod 23 to rotate. The rotation of the plug rod 23 drives the magnetic sealing ring 12 and the external threaded ring 10 to rotate, which facilitates the disassembly and tightening of the external threaded ring 10.

[0029] refer to Figure 4 A sealing ring 25 is fixedly connected to the left side of the sealing ring 5, and an annular sealing groove 26 is provided on the right side of the air-sealing ring 6. The surface of the sealing ring 25 is in contact with the inner wall of the annular sealing groove 26.

[0030] As a technical optimization of this utility model, by setting the sealing ring 25 and the annular sealing groove 26 in combination, the sealing effect between the air-sealing ring 6 and the sealing ring 5 is improved when negative pressure suction is not required, so as to maintain airtightness and avoid air leakage that would affect the use.

[0031] refer to Figure 2 A sealing gasket 27 is fixedly connected to the surface of the bottom end of the air extraction pipe 15, and the surface of the sealing gasket 27 is fixedly connected to the inner wall of the housing 1.

[0032] As a technical optimization of this utility model, by setting a sealing gasket 27, the gap at the connection between the air extraction pipe 15 and the housing 1 is sealed, thus preventing air leakage at the connection between the air extraction pipe 15 and the housing 1, which would affect normal use.

[0033] The working principle and usage process of this utility model are as follows: By pushing the plug tube 14 to the left, the left side of it actuates the magnetic sealing ring 12, external threaded ring 10, internal threaded ring 9, moving cylinder 7, and second sleeve 3 to the left until the second sleeve 3 is fully inserted into the first sleeve 2 and the compression spring 4 contracts. The slot 17 and the positioning mechanism 16 are on the same axis. The positioning mechanism 16 moves downward into the slot 17 to fix the plug tube 14, causing the moving cylinder 7 to slide to the left. The air-sealing ring 6 moves away from the sealing ring 5, and the vent 8 is located to the left of the sealing ring 5. Then, the suction pipe 15 is connected to the suction device to create a negative pressure inside the left side of the housing 1. By opening the air-sealing ring 6, the airflow passes through the vent 8 and communicates with the inside of the plug tube 14 to create a negative pressure inside for use. During use, the filter element 11 blocks any foreign objects that may enter the plug tube 14, preventing the vent hole 8 from becoming blocked. When finished, the positioning mechanism 16 can be pulled upwards to release the positioning of the plug tube 14. Then, the plug tube 14 is rotated, causing the external threaded ring 10 to rotate and separate from the internal threaded ring 9. The plug tube 14 is then pulled out from the housing 1, and the external threaded ring 10 is brought out to clean the filter element 11. After the external threaded ring 10 is removed, it can be pulled out directly from the left side of the plug tube 14. This achieves the effect of protecting the device's ventilation structure and vent hole 8 by setting the filter element 11, preventing foreign objects from blocking the vent hole 8 during negative pressure suction, thus affecting the negative pressure effect. At the same time, it facilitates the cleaning of the filter element 11 and makes it convenient for users.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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 process, method, article, or apparatus.

[0035] 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 negative pressure suction air source terminal, comprising a housing (1), characterized in that: A first sleeve (2) is fixedly connected to the left side of the inner wall of the housing (1). A second sleeve (3) is slidably connected inside the first sleeve (2). A compression spring (4) is fixedly connected to the left side of the inner wall of the first sleeve (2). The right end of the compression spring (4) is fixedly connected to the right side of the inner wall of the second sleeve (3). A sealing ring (5) is fixedly connected to the center inside the housing (1). An air-sealing ring (6) is fixedly connected to the right side of the surface of the second sleeve (3). The right side of the air-sealing ring (6) is in contact with the left side of the sealing ring (5). A movable cylinder (7) is fixedly connected to the right side of the air-sealing ring (6). The surface of the movable cylinder (7) is slidably connected to the inner surface of the sealing ring (5). A number of evenly distributed vent holes (8) are opened on the surface of the movable cylinder (7). An internal threaded ring (9) is fixedly connected to the right side of the cylinder (7). An external threaded ring (10) is threadedly connected to the right side of the internal threaded ring (9). A filter element (11) is fixedly connected inside the external threaded ring (10). A magnetic sealing ring (12) is fixedly connected to the right side of the external threaded ring (10). A sealing ring (13) is fixedly connected to the right side of the inside of the housing (1). A plug tube (14) is attached to the inside of the sealing ring (13). The left side of the plug tube (14) is magnetically connected to the right side of the magnetic sealing ring (12). An air extraction pipe (15) is connected to the left side of the top of the housing (1). A positioning mechanism (16) is provided on the right side of the top of the housing (1). A slot (17) for use with the positioning mechanism (16) is opened on the right side of the top of the plug tube (14).

2. The negative pressure suction air source terminal according to claim 1, characterized in that: The positioning mechanism (16) includes a lever (18) located on the top right side of the housing. A baffle (19) is fixedly connected to the top of the lever (18). A tension spring (20) is sleeved on the surface of the lever (18). The top end of the tension spring (20) is fixedly connected to the bottom of the baffle (19), and the bottom end of the tension spring (20) is fixedly connected to the top of the housing (1).

3. The negative pressure suction air source terminal according to claim 2, characterized in that: The surface of the lever (18) is fitted with a piston ring (21), the outer surface of the piston ring (21) is fixedly connected to the inner wall of the housing (1), the bottom of the lever (18) is provided with a groove, and a ball (22) is rolled inside the groove, the surface of the ball (22) is in contact with the surface of the plug tube (14).

4. The negative pressure suction air source terminal according to claim 1, characterized in that: The magnetic sealing ring (12) is fixedly connected to a number of evenly distributed insert rods (23) on the right side, and the plug tube (14) is provided with a number of evenly distributed slots (24) on the left side, and the surface of the insert rod (23) is in contact with the inner wall of the slot (24).

5. A negative pressure suction air source terminal according to claim 1, characterized in that: A sealing ring (25) is fixedly connected to the left side of the closed ring (5), and an annular sealing groove (26) is provided on the right side of the air-sealing ring (6). The surface of the sealing ring (25) is in contact with the inner wall of the annular sealing groove (26).

6. A negative pressure suction air source terminal according to claim 1, characterized in that: A sealing gasket (27) is fixedly connected to the surface of the bottom end of the air extraction pipe (15), and the surface of the sealing gasket (27) is fixedly connected to the inner wall of the shell (1).

Images