Negative pressure suction meter convenient for pressure regulation

Abstract

The utility model belongs to the technical field of medical equipment, and discloses a negative pressure suction meter convenient for pressure regulation, which comprises a lower shell, an upper shell is fixedly mounted at the upper end of the lower shell through a bolt, and a pressure meter is fixedly mounted on one side of the lower shell; a reset spring is arranged between the arc-shaped piece and the fixing base, an elastic piece base is fixedly installed at the lower end of the inner wall of the upper shell, a sealing ball is fixedly installed in the elastic piece base, the lower end of the inner wall of the upper shell is slidably connected with a movable blocking block, and the movable blocking block makes contact with the lower wall of the sealing ball. According to the negative pressure suction meter facilitating pressure regulation, the arc-shaped piece is stressed to exert pressure on the middle portion of the fixing base, the middle portion of the fixing base is stressed to extrude the sealing ball, and therefore the sealing ball seals the movable blocking block and pushes the movable blocking block downwards at the same time, and the increased pressure pushes the regulating valve plate downwards to enable the area of a negative pressure output port to be reduced. In the pressure regulating process, all the components are in transmission through air pressure, and abrasion between equipment is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, in particular to a negative pressure suction meter that is convenient for pressure regulation. Background Art

[0002] The negative pressure suction device consists of a pressure regulator, a liquid collection bottle, a hose, etc. There are two hose interfaces on the liquid collection bottle, one connected to the negative pressure terminal and the other connected to the working chamber. When the negative pressure terminal is connected, air negative pressure will be generated in the liquid collection bottle, and this negative pressure will guide dirt (such as dirty blood, sputum, etc.) to flow into the liquid collection bottle from the other hose. When the liquid level in the liquid collection bottle reaches a certain height, the stop valve on the liquid collection bottle cap will start to work, cutting off the liquid from flowing into the pipeline, thereby preventing the liquid in the liquid collection bottle from overflowing due to excessive filling. In order to adjust the negative pressure suction device, a negative pressure suction meter is generally installed.

[0003] For example, a multi-position negative pressure suction meter with publication number CN215134303U has an adjustment rod and a pressure regulating block of an integrated structure. After long-term use, both will be severely worn, resulting in reduced sealing and pressure regulation accuracy. In order to solve the above problems, a negative pressure suction meter that is easy to adjust pressure is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a negative pressure suction meter which is convenient for pressure regulation in order to solve the above problems.

[0005] The technical solution adopted by the utility model is as follows: a negative pressure suction meter for pressure regulation, comprising:

[0006] A lower housing, the upper end of which is fixedly mounted with an upper housing by bolts, and a pressure gauge is fixedly mounted on one side of the lower housing;

[0007] An adjusting rod is connected to the upper end of the upper shell body by a thread, an arc-shaped piece is slidably connected to the inner wall of the upper end of the upper shell body, the lower end of the adjusting rod is in contact with the upper end of the arc-shaped piece, a fixing seat is fixedly installed on the inner wall of the middle part of the upper shell body, a return spring is arranged between the arc-shaped piece and the fixing seat, a spring seat is fixedly installed on the lower end of the inner wall of the upper shell body, a sealing ball is fixedly installed inside the spring seat, a movable block is slidably connected to the lower end of the inner wall of the upper shell body, and the movable block is in contact with the lower wall of the sealing ball;

[0008] The regulating valve plate is slidably connected to the inner center of the lower shell. A regulating cavity is opened inside the lower shell. A negative pressure input port is arranged on one side of the regulating cavity, and a negative pressure output port is arranged on the other side. A tympanic membrane is fixedly installed on the upper end of the lower shell.

[0009] Through the above technical scheme, the negative pressure input port is connected to the negative pressure suction device, and the negative pressure output port is connected to the suction tube. When the pressure needs to be adjusted, it is only necessary to rotate the adjusting rod. The adjusting rod rotates downward to squeeze the arc-shaped piece. The arc-shaped piece is subjected to force to exert pressure on the middle part of the fixed seat. The middle part of the fixed seat is subjected to force to squeeze the sealing ball, so that the sealing ball pushes the movable block downward while sealing the movable block. At this time, the pressure on the upper end of the tympanic membrane increases and causes it to concave downward. In the process of the tympanic membrane concaving, the area in the regulating cavity becomes smaller and the pressure increases. The increased pressure pushes the regulating valve plate downward to reduce the area of ​​the negative pressure output port, thereby achieving pressure regulation. In the process of pressure regulation, each component is transmitted through air pressure, which greatly reduces the wear between equipment.

[0010] In a preferred embodiment, the upper end of the adjusting rod is rotatably connected to an adjusting wheel, and the upper end of the adjusting wheel is plugged with a locking block.

[0011] Through the above technical solution, when the pressure needs to be adjusted, the locking block needs to be inserted into the adjusting wheel and the adjusting rod at the same time. At this time, the adjusting wheel can drive the adjusting rod to rotate. When the adjustment is completed, the locking block is removed from the upper end of the adjusting wheel. At this time, the adjusting wheel no longer drives the adjusting rod to rotate, which can prevent pressure changes caused by accidental touch.

[0012] In a preferred embodiment, the upper ends of the adjusting wheel and the adjusting rod are both provided with grooves matched with the locking block.

[0013] In a preferred embodiment, an input end of the pressure gauge is connected to the regulating chamber.

[0014] Through the above technical solution, the internal pressure of the equipment can be observed through the pressure gauge.

[0015] In a preferred embodiment, a spring is arranged between the regulating valve plate and the inner wall of the lower shell.

[0016] In a preferred embodiment, the outer wall of the adjusting wheel is provided with friction patterns.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effect of the utility model is: the utility model provides a negative pressure suction meter that is easy to adjust the pressure.

[0018] Connect the negative pressure input port to the negative pressure suction device, and the negative pressure output port to the suction tube. When the pressure needs to be adjusted, just rotate the adjusting rod. The adjusting rod rotates and moves downward to squeeze the arc-shaped piece. The arc-shaped piece is subjected to force to exert pressure on the middle part of the fixed seat. The middle part of the fixed seat is subjected to force to squeeze the sealing ball, so that the sealing ball pushes the movable block downward while sealing the movable block. At this time, the pressure on the upper end of the tympanic membrane increases and causes it to concave downward. In the process of the tympanic membrane concaving, the area in the regulating cavity becomes smaller and the pressure increases. The increased pressure pushes the regulating valve plate downward to reduce the area of ​​the negative pressure output port, thereby achieving pressure regulation. In the process of pressure regulation, each component is transmitted through air pressure, which greatly reduces the wear between equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0021] Markings in the figure: 1-lower shell; 2-upper shell; 3-adjusting rod; 4-arc-shaped piece; 5-fixed seat; 6-reset spring; 7-spring seat; 8-sealing ball; 9-movable blocking block; 10-negative pressure input port, 11-negative pressure output port; 12-adjusting chamber; 13-adjusting valve plate; 14-tympanic membrane; 15-adjusting wheel; 16-locking block; 17-pressure gauge. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The following will be combined Figure 1-2 A negative pressure suction meter for pressure regulation according to an embodiment of the utility model is described in detail.

[0024] Example:

[0025] A negative pressure suction meter for convenient pressure regulation, comprising:

[0026] The lower shell 1 has an upper shell 2 fixedly mounted on its upper end by bolts, and a pressure gauge 17 is fixedly mounted on one side of the lower shell 1;

[0027] The adjusting rod 3 is connected to the upper end of the upper shell 2 by a thread, and the upper end of the adjusting rod 3 is rotatably connected with an adjusting wheel 15, the outer wall of the adjusting wheel 15 is provided with a friction pattern, and the upper end of the adjusting wheel 15 is plugged with a locking block 16. The adjusting wheel 15 and the upper end of the adjusting rod 3 are both provided with grooves adapted to the locking block 16. When the pressure needs to be adjusted, the locking block 16 needs to be inserted into the adjusting wheel 15 and the adjusting rod 3 at the same time, and the adjusting wheel 15 can drive the adjusting rod 3 to rotate. When the adjustment is completed, the locking block 16 is removed from the upper end of the adjusting wheel 15, and the adjusting wheel 15 no longer drives the adjusting rod 3 to rotate, so as to prevent pressure changes caused by accidental touch;

[0028] An arc piece 4 is slidably connected to the inner wall of the upper end of the upper shell 2, and the lower end of the adjusting rod 3 contacts the upper end of the arc piece 4. A fixing seat 5 is fixedly installed on the inner wall of the middle part of the upper shell 2, and a return spring 6 is arranged between the arc piece 4 and the fixing seat 5. A spring seat 7 is fixedly installed on the lower end of the inner wall of the upper shell 2, and a sealing ball 8 is fixedly installed inside the spring seat 7. A movable block 9 is slidably connected to the lower end of the inner wall of the upper shell 2, and the movable block 9 contacts the lower wall of the sealing ball 8. The adjusting rod 3 rotates and moves downward to squeeze the arc piece 4, and the arc piece 4 is forced to press the middle part of the fixing seat 5, and the middle part of the fixing seat 5 is forced to squeeze the sealing ball 8, so that the sealing ball 8 pushes the movable block 9 downward while sealing the movable block 9;

[0029] A regulating valve plate 13 is slidably connected to the inner center of the lower shell 1. A spring is arranged between the regulating valve plate 13 and the inner wall of the lower shell 1. A regulating chamber 12 is opened inside the lower shell 1. The input end of the pressure gauge 17 is connected to the regulating chamber 12. The internal pressure of the equipment can be observed through the pressure gauge 17. A negative pressure input port 10 is arranged on one side of the regulating chamber 12, and a negative pressure output port 11 is arranged on the other side. The negative pressure input port 10 is connected to the negative pressure suction device, and the negative pressure output port 11 is connected to the suction tube. A tympanic membrane 14 is fixedly installed on the upper end of the lower shell 1. The pressure on the upper end of the tympanic membrane 14 increases and causes it to concave downward. In the process of the tympanic membrane 14 concave, the area in the regulating chamber 12 decreases and the pressure increases. The increased pressure pushes the regulating valve plate 13 downward to reduce the area of ​​the negative pressure output port 11, thereby achieving pressure regulation. In the process of pressure regulation, each component is transmitted by air pressure, which greatly reduces the wear between equipment.

[0030] Working principle:

[0031] The negative pressure input port 10 is connected to the negative pressure suction device, and the negative pressure output port 11 is connected to the suction tube. When the pressure needs to be adjusted, only the adjusting rod 3 needs to be rotated. The adjusting rod 3 rotates downward to squeeze the arc piece 4. The arc piece 4 is forced to exert pressure on the middle part of the fixed seat 5. The middle part of the fixed seat 5 is forced to squeeze the sealing ball 8, so that the sealing ball 8 pushes the movable block 9 downward while sealing the movable block 9. At this time, the pressure on the upper end of the tympanic membrane 14 increases and causes it to concave downward. In the process of the tympanic membrane 14 concave, the area in the regulating chamber 12 becomes smaller and the pressure increases. The increased pressure pushes the regulating valve plate 13 downward to reduce the area of ​​the negative pressure output port 11, thereby achieving pressure regulation. In the process of pressure regulation, each component is transmitted through air pressure, which greatly reduces the wear between equipment.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A negative pressure suction meter for pressure regulation, characterized in that: include: A lower housing (1) has an upper housing (2) fixedly mounted on its upper end by bolts, and a pressure gauge (17) is fixedly mounted on one side of the lower housing (1); The adjusting rod (3) is connected to the upper end of the upper shell (2) by means of a thread; the inner wall of the upper end of the upper shell (2) is slidably connected with an arc-shaped piece (4); the lower end of the adjusting rod (3) is in contact with the upper end of the arc-shaped piece (4); a fixing seat (5) is fixedly installed on the inner wall of the middle part of the upper shell (2); a return spring (6) is arranged between the arc-shaped piece (4) and the fixing seat (5); a spring seat (7) is fixedly installed on the lower end of the inner wall of the upper shell (2); a sealing ball (8) is fixedly installed inside the spring seat (7); a movable block (9) is slidably connected to the lower end of the inner wall of the upper shell (2); the movable block (9) is in contact with the lower wall of the sealing ball (8); A regulating valve plate (13) is slidably connected to the inner center of the lower shell (1); a regulating chamber (12) is provided inside the lower shell (1); a negative pressure input port (10) is provided on one side of the regulating chamber (12); and a negative pressure output port (11) is provided on the other side; and a tympanic membrane (14) is fixedly installed at the upper end of the lower shell (1).

2. A negative pressure suction meter for pressure regulation as claimed in claim 1, characterized in that: The upper end of the adjusting rod (3) is rotatably connected to an adjusting wheel (15), and the upper end of the adjusting wheel (15) is plugged with a locking block (16).

3. A negative pressure suction meter for pressure regulation as claimed in claim 2, characterized in that: The upper ends of the adjusting wheel (15) and the adjusting rod (3) are both provided with grooves adapted to the locking block (16).

4. A negative pressure suction meter for pressure regulation as claimed in claim 1, characterized in that: The input end of the pressure gauge (17) is connected to the regulating chamber (12).

5. A negative pressure suction meter for pressure regulation as claimed in claim 1, characterized in that: A spring is arranged between the regulating valve plate (13) and the inner wall of the lower shell (1).

6. A negative pressure suction meter for pressure regulation as claimed in claim 2, characterized in that: The outer wall of the regulating wheel (15) is provided with friction patterns.

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