CN204083390U - The structure of check valve - Google Patents

Abstract

The utility model is the structure about a kind of check valve, and main structure comprises the suction tude mutually fixed and a steam outlet pipe, and between suction tude and steam outlet pipe, is provided with one for the choke part covering this suction tude, and one is located at elasticity cotton piece between this suction tude and steam outlet pipe.By means of said structure, when gas enters from suction tude, though there is choke part to cover entrance, but extruded elasticity cotton piece disengages space because of compression, make choke part wouldn't tool screening effect, gas just passes through by around choke part, and is flowed out by steam outlet pipe after penetrating elasticity cotton piece.The use durability degree of diaphragm can being promoted whereby, eliminating diaphragm because shaking the noise causing producing with gas current friction, and the air-flow of stable input.

Description

The structure of check valve

Technical field

The utility model, for providing a kind of structure of check valve, is espespecially a kind ofly avoided valve block to damage because of excessive deformation, is slowed down valve block because of vibrations and cause the noise that produces with gas current friction, and stablized the structure of the check valve of the air-flow inputted.

Background technique

Air bed provides several inflation cylinder to produce and rises and falls and alternately changes, interval reduces human body skin by health gravity effect, and the contact produced between air cushion, bedsore is caused by gravity compressing for a long time to prevent human body skin, and the suction tude be loaded between inflation cylinder and air pump, be generally and head inflating pipe bar tool is kept one's end up function and need installation check valve, when being used for preventing air pump from stopping conveying air to gas tube, the adverse current of air and the setting pressure of gas tube is caused to be drained, and then make head position gas tube bar there is no the change of alternating pitch, user's head is not caused to rise and fall indefinite.

Refer to shown in Fig. 1, for the perspective view of existing check valve, finding out by knowing in figure, is in two end cap, arrange spring 91 and a valve block 92 at existing check valve, right above-mentioned check valve in time using, for really there is following point and disappearance waits to improve:

One, existing check valve is when air flows into, the air that valve block 92 is flowed can be made to pass, and, because this valve block 92 is soft thin lamellar body, the air that valve block 92 is flowed is passed, and with pass through in arc-shaped supplied gas, if when air mass flow is larger, easily excessive deformation is even destroyed for valve block 92.

Two, existing check valve is when air inflow is larger, and this valve block 92 produces resonance sympathetic response effect because of the promotion of air, make valve block 92 between two end cap, produce vibrations, and produce buzzing sound formation noise.

Therefore above-mentioned existing problem and disappearance how will be solved, be the applicant be engaged in the industry relevant manufactures desire most ardently the place, direction studied and improve.

Therefore, the applicant is because above-mentioned disappearance, collect related data, via in many ways assessing and considering, and to engage in the many years of experience of the industry accumulation, via constantly studying and revising, just design the use durability degree that this kind can promote valve block, eliminate valve block because shaking the noise causing producing with gas current friction, and the utility model patent of the structure of the check valve of the air-flow of stable input.

Model utility content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defect that prior art exists, and a kind of structure of check valve is provided, air can be entered from suction tude, and the effect of spring is in the past replaced with elasticity cotton piece, for the action of choke part reciprocating action and selective masking suction tude, prevent air from entering from steam outlet pipe and maintaining the original function of check valve simultaneously, slow down the noise produced in the loss of choke part and action further.

The utility model solves the technological scheme that its technical problem adopts:

A kind of structure of check valve, comprise: the steam outlet pipe, that a suction tude, is fastened in this suction tude to be located between this suction tude and this steam outlet pipe and to be located at the elasticity cotton piece between this suction tude and this steam outlet pipe for the choke part and covering this suction tude, and this elasticity cotton piece with reciprocating action or can be able to steady air flow for this choke part; Under general state, choke part covers suction tude, air cannot be refluxed from steam outlet pipe, therefore there is effect of check, and when gas passes through from suction tude, air pressure puts on choke part and extrudes elasticity cotton piece, makes to be disengaged by the elasticity cotton piece compressed the space departing from suction tude for choke part backward, supplies air whereby from suction tude by passing through around choke part and passing elasticity cotton piece.

By above-mentioned technology, when can pass by air for the valve block existing for existing check valve, be out of shape in arc-shaped with its flow characteristic, if when air mass flow is larger, the easy excessive deformation of valve block is even destroyed, and resonate because of the promotion of the air problem points of the buzzing produced or the noise produced with gas current friction of valve block is broken through the practical improvement reaching above-mentioned advantage.

The beneficial effects of the utility model are, air can be entered from suction tude, and the effect of spring is in the past replaced with elasticity cotton piece, the action of selective masking suction tude for choke part reciprocating action, prevent air from entering from steam outlet pipe and maintaining the original function of check valve simultaneously, slow down the noise produced in the loss of choke part and action further.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the perspective view of existing check valve.

Fig. 2 is the stereogram of the utility model preferred embodiment.

Fig. 3 is the exploded view of the utility model preferred embodiment.

Fig. 4 is the sectional view of the utility model preferred embodiment.

Fig. 5 is the action schematic diagram of the utility model preferred embodiment.

Fig. 6 is the structural representation of another embodiment of the utility model.

Fig. 7 is the exploded view of another embodiment of the utility model.

Number in the figure illustrates:

1,1a, 1b suction tude

11 suction ports

12 protecgulums

2,2a, 2b steam outlet pipe

21 air outlets

22 bonnets

3,3a, 3b choke part

4,4a, 4b elasticity cotton piece

5 flanks

6b air valve seat

91 springs

92 valve blocks

Embodiment

Refer to shown in Fig. 2, Fig. 3 and Fig. 4, be the stereogram of the utility model preferred embodiment, exploded view and sectional view, find out that the utility model comprises by knowing in figure:

One suction tude 1, this suction tude 1 comprises a suction port 11 and being formed at end and is formed at the other end and the protecgulum 12 led to this suction port 11;

One steam outlet pipe 2 being fastened in this suction tude, this steam outlet pipe 2 comprises an air outlet 21 and being formed at end and is formed at the other end and the bonnet 22 led to this air outlet 21, and this bonnet 22 fixes mutually with this protecgulum 12.

One is located at also for the choke part 3 covering this suction tude 1 between this suction tude 1 and this steam outlet pipe 2, and this choke part 3 is colloid;

One is located at the elasticity cotton piece 4 between this suction tude 1 and this steam outlet pipe 2, and this elasticity cotton piece 4 is low-density sponge and with reciprocating action or can be slowed down vibrations for this choke part 3, reduce noise or steady air flow; And

Several flank 5 be formed at for this elasticity cotton piece 4 of conflicting inside this steam outlet pipe 2.

Please coordinate consults shown in Fig. 2 to Fig. 5 simultaneously, for the stereogram of the utility model preferred embodiment, exploded view, sectional view and action schematic diagram, find out by knowing in figure, during by above-mentioned component group structure, respectively suction tude 1 and steam outlet pipe 2 are overlapped the loading line front end of the head pipe bar being connected to medical air mattress, namely complete assembling of the present utility model.

Before inflating, air in air bed is blinded by suction port 11 due to choke part 3, gas cannot be refluxed, and when gas is squeezed into air bed by air pump, air is by suction port 11, and this air also extrudes the elasticity cotton piece 4 adjacent to choke part 3 to choke part 3 applied pressures simultaneously, elasticity cotton piece 4 is made to shrink the space of disengaging for the activity of choke part 3, now choke part 3 is close to elasticity cotton piece 4 and temporarily unclamps the screening effect of suction port 11, and air just passes through from its gap and through elasticity cotton piece 4.The simple function of the spring of being different from over and characteristic, because whole of elasticity cotton piece 4 is conflicted choke part 3, therefore choke part 3 can be made significantly to reduce bending amplitude when elasticity cotton piece 4 elastic shrinkage, and avoid it to swing continuously, and simplify due to the action of choke part 3, its resonance effect is significantly reduced, more reduces the friction to tube wall and air, be therefore able to the generation of reducing noise.The characteristic of adding elasticity cotton piece 4 porous material has effect of steady air flow, make via air outlet 21 discharge air-flow can not be too powerful, and be positioned at inside steam outlet pipe 2 for the flank 5 supporting elasticity cotton piece 4, the thickness required for elasticity cotton piece 4 can be reduced, coordinate low-density sponge material, the effect of aforementioned stable air-flow can not be run counter to desire.

Separately please coordinate consults shown in Fig. 6 simultaneously, for the structural representation of another embodiment of the utility model, find out by knowing in figure, the difference of its structure and aforementioned only interior pipe diameter size, this design strengthening caliber in suction tude 1a and reduce caliber in steam outlet pipe 2a, in suction tude 1a, the speed of inflation can be promoted, and can pass through elasticity cotton piece 4a and carry out steady air flow; And also limit in steam outlet pipe 2a the gas flow that adverse current returns back out tracheae 2a, more can avoid causing because air inflow is excessive choke part 3a or elasticity cotton piece 4a distortion to be involved in the situation of steam outlet pipe 2a, and make the utility model have more practicability.

Again please refer to shown in Fig. 7, for the exploded view of another embodiment of the utility model, find out by knowing in figure, in between suction tude 1b and steam outlet pipe 2b, arrange one for the air valve seat 6b of accommodating choke part 3b, make effect of choke part 3b and air valve seat 6b interoperation and tool check valve, and in this structure, elasticity cotton piece 4b, then in order to reduce noise, promotes compatibility of the present utility model whereby.

But, the above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Therefore, refer to shown in whole accompanying drawing, when the utility model uses, compare with prior art, really there is following advantages:

One, choke part 3 can be avoided to damage because of excessive deformation, to promote the use durability degree of diaphragm.

Two, the deformation degree diminution of choke part 3, can reduce noise that resonance effect produces and slow down the noise that choke part 3 produces with pipe friction.

Three, promoted air inflow and filled device speed, the throughput that Simultaneous Stabilization exports.

In sum, the utility model is in structural design, use practicability and cost benefit, meet completely needed for industry development, and the structure disclosed also is have unprecedented innovative structure, there is novelty, creativeness, practicability, meet the regulation about utility model patent important document, therefore mention application in accordance with the law.

Claims (10)

1. a structure for check valve, is characterized in that, comprising:

One suction tude;

One steam outlet pipe being fastened in this suction tude;

One is located between this suction tude and this steam outlet pipe also for the choke part covering this suction tude; And

One is located at the elasticity cotton piece between this suction tude and this steam outlet pipe.

2. the structure of check valve according to claim 1, is characterized in that, forms the flank of this elasticity cotton piece of several conflict inside described steam outlet pipe.

3. the structure of check valve according to claim 1, it is characterized in that, described suction tude comprises a suction port and being formed at end and is formed at the other end and the protecgulum led to this suction port, and this steam outlet pipe comprises an air outlet and being formed at end is formed at the other end and the bonnet led to this air outlet, this bonnet and this protecgulum fix mutually.

4. the structure of check valve according to claim 1, is characterized in that, described in pore internal diameter of giving vent to anger be less than this air inlet pipe hole internal diameter.

5. the structure of check valve according to claim 1, is characterized in that, described elasticity cotton piece is low-density sponge.

6. the structure of check valve according to claim 1, is characterized in that, described choke part is colloid.

7. the structure of check valve according to claim 1, is characterized in that, the structure that described suction tude and this steam outlet pipe are one of the forming.

8. the structure of check valve according to claim 1, is characterized in that, described elasticity cotton piece is for slowing down vibrations, reducing noise or steady air flow.

9. the structure of check valve according to claim 1, is characterized in that, described elasticity cotton piece and this choke part interoperation.

10. the structure of check valve according to claim 1, is characterized in that, described choke part is placed in an air valve seat.