CN219493259U - A compressor valve block subassembly for medical treatment oxygenerator - Google Patents

Abstract

The utility model relates to a compressor valve block assembly for a medical oxygenerator, which comprises a valve plate, a silica gel valve block and a pressing sheet, wherein a valve block groove is formed in the valve plate, the silica gel valve block is arranged in the valve block groove, the rear end of the silica gel valve block is pressed and fixed through the pressing sheet, an air flow groove and an air vent are formed in the position, corresponding to the valve block head of the silica gel valve block, of the valve block groove bottom, and the air flow groove is annularly arranged outside the air vent. The utility model can effectively inhibit noise and prolong the service life of the valve plate, has high response speed of the valve plate, can be well suitable for working conditions under high frequency, and has lower cost.

Description

A compressor valve block subassembly for medical treatment oxygenerator

Technical Field

The utility model relates to the field of oxygenerators, in particular to a compressor valve plate assembly for a medical oxygenerator.

Background

The oxygen generator is a common device for manufacturing oxygen, and is mainly used in the fields of medical treatment and the like, a power source of the existing oxygen generator is mainly a compressor, and the quality of a valve plate of the compressor can influence the use and the oxygen manufacturing effect of the oxygen generator. The compressor valve block in the prior art mainly comprises a spring type structure and a reed sheet structure, wherein the spring type structure is composed of a spring, a metal valve block, a valve seat and fastening screws, the spring is arranged above the valve block, under the action of air pressure, the air pressure pushes the valve block to compress the spring through a valve hole on the valve seat, and then the air valve is opened or closed, the reed sheet structure is composed of a reed valve block, a valve plate and valve block screws made of thin steel sheets, the metal reed valve block is fastened on the valve plate by the valve block screws, and under the action of the air pressure, the air pressure pushes the reed valve block through the valve hole on the valve seat, and then the air valve is opened or closed.

However, in the prior art, since the valve plate of the compressor of the oxygenerator is mainly made of metal materials, and the valve plate is in high-frequency reciprocating motion, the metal valve plate can generate high-frequency noise in the impact process, and the valve plate and other parts related to the valve plate are made of metal materials, so that the absorption of the high-frequency noise is relatively poor, the noise can be transmitted to the outside, the use of the oxygenerator can be influenced, for example, the damping and noise reducing device of the air compressor in the medical oxygenerator is specially designed in the Chinese utility model with the authority publication number of CN206320009U so as to solve the problems. In addition, in the impact process of the valve plate, due to the fact that metal collides with metal and no buffer exists, the impact force is large, the impact force directly acts on the valve plate and the valve plate, the valve plate can be gradually torn under the action of the impact force for a long time, and the service life of the valve plate is further influenced.

Disclosure of Invention

The utility model aims to provide a valve block assembly of a compressor for a medical oxygenerator, which can effectively inhibit noise and prolong the service life of a valve block, has high response speed, can be well suitable for working conditions under high frequency and has lower cost.

The aim of the utility model is realized by the following technical scheme:

the utility model provides a compressor valve block subassembly for medical treatment oxygenerator, includes valve plate, silica gel valve block and preforming, wherein be equipped with the valve block groove on the valve plate, and the silica gel valve block is located in the valve block groove, the silica gel valve block rear end compresses tightly fixedly through the preforming, valve block groove bottom corresponds the valve block head position of silica gel valve block and is equipped with air current groove and air vent, and the air current groove ring is located the air vent outside.

The lower side of the valve plate is connected with the connecting rod piston, and the outer edge of the valve plate is provided with a mounting end face, a piston ring and a compression ring, wherein the piston ring is arranged on the mounting end face and is pressed and fixed through the compression ring.

The pressing piece is fixed on the valve plate through a screw.

The utility model has the advantages and positive effects that:

1. according to the utility model, the silica gel valve block is adopted to replace the existing metal valve block, so that the noise can be effectively restrained, the service life of the valve block is prolonged, the purposes of restraining the noise and prolonging the service life of the oxygenerator are further realized, the response speed of the valve block is high, the valve block is well suitable for working conditions under high frequency, and the cost is lower.

2. According to the utility model, the silica gel valve block is sunk and arranged in the valve block groove, the structure is more compact, the groove bottom of the valve block groove is formed into a boss shape by arranging the circle of air flow grooves, and the vent holes are arranged at the boss, so that the contact area of the valve block can be reduced by matching the boss with the valve block head of the silica gel valve block, and the valve block is facilitated to be sealed.

3. The air flow groove can form an air flow buffer zone, can reduce air flow pulsation and turbulence, can reduce the turbulence noise of the exhaust periodicity through test verification, and meanwhile, the design of the valve plate groove also provides a buffer space, so that the beating impact of the valve plate on the surfaces of a cylinder cover, a valve plate and the like in the opening and closing process can be reduced, and further, the vibration noise and the impact force of the buffer valve plate during beating can be restrained.

Drawings

Figure 1 is a schematic view of the structure of the present utility model,

figure 2 is a front view of the utility model of figure 1,

figure 3 is A-A view of figure 2,

figure 4 is a schematic view of the use state of the present utility model,

figure 5 is a schematic view of the second valve plate assembly of figure 4,

fig. 6 is a cross-sectional view of the second valve plate assembly of fig. 5.

Wherein, 1 is the valve plate, 101 is the valve block groove, 102 is the air current groove, 103 is the air vent, 2 is the silica gel valve block, 201 is the valve block head, 3 is the preforming, 4 is first valve block subassembly, 5 is the second valve block subassembly, 6 is the screw, 7 is the clamping ring, 8 is the connecting rod piston, 9 is the piston ring.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to 6, the utility model comprises a valve plate 1, a silica gel valve block 2 and a pressing sheet 3, wherein as shown in fig. 3, a valve block groove 101 is arranged on the valve plate 1, the silica gel valve block 2 is arranged in the valve block groove 101, the rear end of the silica gel valve block 2 is pressed and fixed by the pressing sheet 3, an air flow groove 102 and an air vent 103 are arranged at the bottom of the valve block groove 101 corresponding to the position of a valve block head 201 of the silica gel valve block 2, and the air flow groove 102 is arranged outside the air vent 103 in a surrounding manner. Because the metal valve plate of the existing medical oxygen generator is one of important factors for generating noise, the utility model adopts the silica gel valve plate 2 to replace the existing metal valve plate, the soft silica gel has certain absorption capacity for high-frequency noise, the high-frequency noise generated in the impact process can be greatly reduced under the absorption effect of the soft silica gel material, meanwhile, the transmission capacity of the soft silica gel for noise is relatively poor, the soft silica gel has certain isolation effect for noise, thereby limiting the intensity of the noise transmitted to the outside, in addition, the silica gel material can absorb the impact force of the buffer valve plate when beating, further prolonging the fatigue damage time of the valve plate, namely prolonging the service life of the valve plate, and meanwhile, the flexible and tough materials of the silica gel valve plate 2 are utilized to replace the structures such as springs in the prior art, the problems of spring hysteresis and the like can not exist, so the valve plate response speed of the utility model is fast, the valve plate 2 can be well suitable for working conditions under high frequency, and the cost of the valve plate 2 is lower than that of springs, thin steel strips and the like.

In addition, as shown in fig. 3, the silica gel valve block 2 is installed in the valve block groove 101 in a sinking manner, so that the structure is more compact, the groove bottom of the valve block groove 101 is formed into a boss shape by arranging the air flow groove 102, and the vent hole 103 is arranged at the boss, so that the contact area of the valve block can be reduced by matching the boss with the valve block head 201 of the silica gel valve block 2, the sealing of the valve block is as close as possible to the line sealing, the sealing of the valve block is facilitated, in addition, the air flow groove 102 around the valve block head 201 can form an air flow buffer area, the pulsation of the air flow can be reduced, the turbulence is reduced, and the periodic turbulence noise of the exhaust is further reduced, in addition, as shown in fig. 4, the design of the valve block groove 101 also provides a buffer space, the beating impact of the valve block on the surfaces of a cylinder cover and the like in the opening and closing process can be further suppressed, and the impact force of the valve block during beating can be further buffered.

The utility model can be arranged at a proper position of a compressor according to the need, wherein the compressor comprises a first valve block component 4 and a second valve block component 5 which are stacked together, the structure of the first valve block component 4 is shown in fig. 1-3, the structure of the first valve block component only comprises a valve plate 1, a silica gel valve block 2, a pressing sheet 3 and the like, the structure of the second valve block component 5 is shown in fig. 5-6, the structure of the second valve block component 5 comprises a piston ring 9, a pressing ring 7, a connecting rod piston 8 and the like besides the structures of the valve plate 1, the silica gel valve block 2, the pressing sheet 3 and the like, the connecting rod piston 8 is arranged in a compressor cylinder body, the upper end of the connecting rod piston 8 is provided with the valve plate 1, the outer edge of the valve plate 1 is provided with a mounting end face 104, the piston ring 9 and the pressing ring 7, wherein the piston ring 9 (also called a cup) is arranged on the mounting end face 104 and is pressed and fixed through the pressing ring 7, and the piston ring 9 plays a role of sealing compressed gas. The connecting rod piston 8 is well known in the art.

In addition, as shown in fig. 4, the vent hole 103 and the silica gel valve block 2 of the first valve block assembly 4 are reversely arranged with the vent hole 103 and the silica gel valve block 2 of the second valve block assembly 5, and the pressing piece 3 in each valve block assembly is fixed by a screw 6 to compress the rear end of the corresponding silica gel valve block 2, and the nut part of the screw 6 is sunk in the valve block groove 101 to ensure compact structure.

The working principle of the utility model is as follows:

according to the utility model, the silica gel valve block 2 is adopted to replace the existing metal valve block, so that the noise can be effectively restrained, the service life of the valve block is prolonged, the purposes of restraining the noise and prolonging the service life of the oxygenerator are further realized, the response speed of the valve block is high, the valve block is well suitable for working conditions under high frequency, and the cost is lower.

In addition, the silica gel valve block 2 is arranged in the valve block groove 101 in a sinking mode, the groove bottom of the valve block groove 101 is formed into a boss shape through the arrangement of the air flow groove 102, and the vent hole 103 is arranged at the boss, so that the boss is matched with the valve block head 201 of the silica gel valve block 2, the contact area of the valve block can be reduced, the valve block is facilitated to be sealed, the air flow groove 102 can form an air flow buffer area, pulsation of air flow can be reduced, turbulence is reduced, and then periodic turbulent noise of exhaust is reduced, a certain buffer space is provided by the design of the valve block groove 101, and beating impact of the valve block on the surfaces of the cylinder cover, the valve plate 1 and the like in the opening and closing process can be reduced.

As shown in fig. 4, when the compressor of the oxygenerator works, the air flow flows upward through the air holes 103 on the second valve plate assembly 5 and pushes the silica gel valve plate 2 of the second valve plate assembly 5 to be opened, and then flows into the air holes 103 of the first valve plate assembly 5 and pushes the silica gel valve plate 2 of the first valve plate assembly 5 to be opened.

Claims (3)

1. A compressor valve block assembly for a medical oxygenator, comprising: including valve plate (1), silica gel valve block (2) and preforming (3), wherein be equipped with valve block groove (101) on valve plate (1), and silica gel valve block (2) are located in valve block groove (101), silica gel valve block (2) rear end compresses tightly fixedly through preforming (3), valve block groove (101) tank bottom corresponds valve block head (201) position of silica gel valve block (2) and is equipped with air current groove (102) and air vent (103), and air current groove (102) are encircleed and are located the air vent (103) outside.

2. The compressor valve plate assembly for a medical oxygenator of claim 1 wherein: the lower side of the valve plate (1) is connected with the connecting rod piston (8), and the outer edge of the valve plate (1) is provided with an installation end face (104), a piston ring (9) and a compression ring (7), wherein the piston ring (9) is arranged on the installation end face (104) and is pressed and fixed through the compression ring (7).

3. The compressor valve plate assembly for a medical oxygenator of claim 1 wherein: the pressing piece (3) is fixed on the valve plate (1) through a screw (6).