Sputum suction machine negative pressure regulating valve

Abstract

The utility model relates to sputum suction machine pressure regulating technical field, concretely is sputum suction machine negative pressure regulating valve, including valve body, the bottom end of valve body is connected with valve nozzle, the inside top of valve body is equipped with internal thread, the inside of valve body is provided with swingle, and the surface of swingle is provided with external thread, and external thread and internal thread are connected with each other threadedly, the inside top of valve nozzle is equipped with step groove, and the inside of step groove places sealing ring, and the sealing ring is used for sealing work. The utility model discloses through the cooperation of sealing ring and swingle bottom, makes the pressure regulating fluctuation when rotating smaller, simultaneously the utility model discloses through setting up external thread on swingle, setting up internal thread in the inside of valve body, through the thread cooperation of external thread and internal thread, can pass through accurate pitch calculation, reaches the controllable range of stroke, and the precision of air pressure adjustment.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulation technology for suction machines, specifically to a negative pressure regulating valve for suction machines. Background Technology

[0002] When medical staff perform sputum suctioning on patients, they use ordinary sputum suction machines. The sputum suction tube is inserted manually by the medical staff, and then the negative pressure system is turned on to perform the sputum suctioning operation. During the sputum suctioning process, it is usually necessary to adjust the negative pressure, so a negative pressure regulating valve for the sputum suction machine is needed.

[0003] Currently, commonly used pressure regulating valves on the market have a small stroke distance and large fluctuations in pressure when rotating. Therefore, it is impossible to achieve controllable stroke range through precise pitch calculation, resulting in insufficient precision in air pressure adjustment and causing great inconvenience to users. Utility Model Content

[0004] The purpose of this invention is to provide a negative pressure regulating valve for a suction machine, so as to solve the problems mentioned in the background art, such as the small stroke distance of commonly used pressure regulating valves, the large fluctuation of pressure during rotation, and the insufficient precision of air pressure adjustment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure regulating valve for a suction machine, comprising a valve body, a valve nozzle being snapped into the bottom end of the valve body, an internal thread being provided at the top end of the valve body, a handle being provided inside the valve body, and an external thread being provided on the surface of the handle, with the external thread and the internal thread being threadedly connected to each other; a stepped groove being provided at the top end of the valve nozzle, and a sealing ring being placed inside the stepped groove for sealing operation.

[0006] Preferably, the bottom end of the valve body is provided with a channel hole, and the channel hole communicates with the internal thread.

[0007] Preferably, the bottom of the valve nozzle is provided with a straight groove, and the straight groove communicates with the stepped groove.

[0008] Preferably, the surface of the valve body is provided with air holes, and the air holes are interconnected with the channel holes.

[0009] Preferably, after the valve body and the valve nozzle are engaged, the bottom end of the valve body extends into the interior of the stepped groove and tightly presses and fixes the sealing ring.

[0010] Compared with existing technologies, the beneficial effects of this invention are as follows: The negative pressure regulating valve of this suction machine operates by rotating a handle. The external threads on the surface of the handle connect with the internal threads inside the valve body, causing the valve to rise and fall. During the rise and fall of the handle, its bottom separates from or contacts the sealing ring. Air then enters through the air hole and exits through the straight groove via the channel hole and the gap between the handle and the sealing ring. The size of the gap between the handle and the sealing ring is adjusted by raising and lowering the handle. Currently, commonly used pressure regulating valves on the market have a small stroke distance and large pressure fluctuations during rotation. This invention, through the cooperation between the sealing ring and the bottom of the handle, reduces pressure fluctuations during rotation. Furthermore, by setting external threads on the handle and internal threads inside the valve body, the threaded cooperation between the external and internal threads allows for precise pitch calculation, ensuring controllable stroke range and accurate air pressure adjustment. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a magnified exploded view of the present invention.

[0013] Figure 3 This is a schematic diagram of the enlarged three-dimensional cross-section of this utility model;

[0014] Figure 4 This is a schematic diagram of the cross-sectional explosion structure of this utility model.

[0015] In the diagram: 1. Valve body; 11. Internal thread; 12. Channel hole; 13. Air hole; 2. Valve nozzle; 21. Step groove; 22. Straight groove; 3. Rotary handle; 31. External thread; 4. Sealing ring. Detailed Implementation

[0016] 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, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0017] The structure of the negative pressure regulating valve for the suction machine provided by this utility model is as follows: Figure 1 as well as Figure 4 As shown, the valve includes a valve body 1, a valve nozzle 2 is snapped onto the bottom end of the valve body 1, an internal thread 11 is provided at the top end inside the valve body 1, a handle 3 is provided inside the valve body 1, and an external thread 31 is provided on the surface of the handle 3, and the external thread 31 and the internal thread 11 are threadedly connected to each other. A channel hole 12 is provided at the bottom end inside the valve body 1, and the channel hole 12 communicates with the internal thread 11. An air hole 13 is provided on the surface of the valve body 1, and the air hole 13 communicates with the channel hole 12.

[0018] During implementation, rotating the handle 3 causes the external thread 31 on the surface of the handle 3 to be threadedly connected with the internal thread 11 inside the valve body 1 for lifting and lowering.

[0019] Furthermore, such as Figure 2 , Figure 3 as well as Figure 4 As shown, a stepped groove 21 is provided at the top of the valve nozzle 2, and a sealing ring 4 is placed inside the stepped groove 21. The sealing ring 4 is used for sealing. A straight groove 22 is provided at the bottom of the valve nozzle 2, and the straight groove 22 communicates with the stepped groove 21. After the valve body 1 and the valve nozzle 2 are engaged, the bottom end of the valve body 1 extends into the interior of the stepped groove 21 and presses the sealing ring 4 tightly.

[0020] During implementation, when the handle 3 is raised or lowered, its bottom will separate from or contact the sealing ring 4. Then, air is introduced through the air hole 13. The gas is discharged through the straight groove 22 through the channel hole 12 and the gap between the handle 3 and the sealing ring 4. The size of the gap between the handle 3 and the sealing ring 4 is adjusted by raising or lowering the handle 3.

[0021] Working principle: When in use, by rotating the handle 3, the external thread 31 on the surface of the handle 3 will be threadedly connected with the internal thread 11 inside the valve body 1 to raise and lower. When the handle 3 is raised and lowered, its bottom will separate from or contact the sealing ring 4. Then, air is introduced through the air hole 13. The gas is discharged through the straight groove 22 through the channel hole 12 and the gap between the handle 3 and the sealing ring 4. The size of the gap between the handle 3 and the sealing ring 4 is adjusted by raising and lowering the handle 3.

[0022] Currently, commonly used pressure regulating valves on the market have a small stroke distance and too much pressure fluctuation during rotation. However, this utility model, through the cooperation between the sealing ring 4 and the bottom of the handle 3, makes the pressure fluctuation during rotation smaller. At the same time, this utility model, by setting an external thread 31 on the handle 3 and an internal thread 11 inside the valve body 1, through the threaded cooperation between the external thread 31 and the internal thread 11, can achieve controllable stroke range and precise air pressure adjustment through precise pitch calculation.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A negative pressure regulating valve for a suction machine, comprising a valve body (1), characterized in that: The valve body (1) is fitted with a valve nozzle (2) at its bottom end. The valve body (1) has an internal thread (11) at its top end. The valve body (1) has a handle (3) inside, and the surface of the handle (3) has an external thread (31). The external thread (31) and the internal thread (11) are threaded together. The valve nozzle (2) has a stepped groove (21) at its top end, and a sealing ring (4) is placed inside the stepped groove (21). The sealing ring (4) is used for sealing.

2. The negative pressure regulating valve for a suction machine according to claim 1, characterized in that: The valve body (1) has a channel hole (12) at its bottom end, and the channel hole (12) communicates with the internal thread (11).

3. The negative pressure regulating valve for a suction machine according to claim 1, characterized in that: The bottom of the valve nozzle (2) is provided with a straight groove (22), and the straight groove (22) is connected to the stepped groove (21).

4. The negative pressure regulating valve for a suction machine according to claim 1, characterized in that: The valve body (1) has air holes (13) on its surface, and the air holes (13) are connected to the channel holes (12).

5. The negative pressure regulating valve for a suction machine according to claim 1, characterized in that: After the valve body (1) is engaged with the valve nozzle (2), the bottom end of the valve body (1) extends into the interior of the stepped groove (21) and presses the sealing ring (4) tightly.

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