CN111550585A

CN111550585A - Positive pressure pulse valve and pulse method thereof

Info

Publication number: CN111550585A
Application number: CN201910466541.6A
Authority: CN
Inventors: 柯雨停
Original assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology; Union Hospital Tongji Medical College Huazhong University of Science and Technology
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-08-18

Abstract

The embodiment of the invention discloses a positive pressure pulse valve, which comprises a shell and an exhaust hole arranged on the shell, wherein a small-diameter inlet and a large-diameter outlet are respectively arranged at two ends of the outer side of the shell, a baffle is arranged at a position close to the large-diameter outlet in the shell, a one-way valve is arranged in the large-diameter outlet, an expansion bag is arranged in the shell, two ends of the expansion bag are respectively arranged on the small-diameter inlet and the baffle, a support rod is fixedly arranged in the large-diameter outlet, and an elastic valve door which is in contact with the expansion bag outlet and controls the expansion bag outlet to be opened and closed is fixedly arranged on the support rod; also included is a method of pulsing a positive pressure pulsing valve; this device simple structure, easily operation can seal the pipe or dose for the continuous malleation pulsed of pipeline automatically, lasts the malleation and avoids palirrhea, has alleviateed staff's burden, has improved the efficiency of work.

Description

Positive pressure pulse valve and pulse method thereof

Technical Field

The embodiment of the invention relates to the technical field of pulse valves, in particular to a positive pressure pulse valve and a pulse method thereof.

Background

The pulse type tube sealing or drug administration is an application mode of deep vein catheterization in clinic, is suitable for the difficulty of venipuncture, patients needing long-term infusion, liquid and drugs can be timely input into the bodies of the patients during rescue, and the pulse type tube sealing or drug administration device has the characteristics of rapidness, high efficiency, safety and pain relief for the patients.

However, in the prior art, the pulse implementation mainly adopts two modes, namely an electronic control mode and a manual control mode. The former is an electromagnetic pulse valve disclosed in publication No. CN206054882U, which realizes corresponding functions through the electromagnetic pulse valve, and the latter is mainly controlled through experience of a technician, etc. However, the two positive pressure pulse valves still have the following defects:

in electronic control's pulse valve, current pulse valve device structure is complicated, and the fault rate is high, and manual operation is too loaded down with trivial details to be unfavorable for fast operation and standardization and uses, and this has increased the staff and has loaded down in the during operation, leads to work efficiency not high, so it is necessary to design a simple structure, the malleation pulse valve of easily operating.

Disclosure of Invention

Aiming at the defects in the background art, the embodiment of the invention provides a positive pressure pulse valve and a pulse method thereof, which can effectively solve the problems in the prior art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the utility model provides a positive pressure pulse valve, includes the shell and sets up the exhaust hole on the shell, shell outside both ends are provided with thin footpath entry and thick footpath export respectively, and are in the position that is close to thick footpath export in the shell is equipped with the baffle install the check valve in the thick footpath export, the inside inflation bag that is provided with of shell, the both ends of inflation bag are established respectively thin footpath entry with on the baffle fixed mounting has the bracing piece in the thick footpath export fixed mounting have with inflation bag exit linkage and control the elasticity valve of inflation bag export switch on the bracing piece.

The embodiment of the invention is also characterized in that the baffle is fixedly arranged on the inner wall of the shell in an annular shape, and the inner ring of the baffle is fixedly connected with the expansion bag in a closed manner.

The embodiment of the invention is further characterized in that the elastic valve is T-shaped and comprises a movable rod and a stop block, the movable rod is sleeved with a spring, one end of the spring is fixed at the tail end of the movable rod, and the other end of the spring is fixed on the baffle plate.

The embodiment of the invention is further characterized in that the baffle plate moves along the axial direction of the movable rod through a spring, and a chute for installing an energy accumulator is arranged in the movable rod. In addition, the invention also provides a pulse method of the positive pressure pulse valve, which comprises the following steps:

step 100, filling fluid from an inlet to continuously accumulate the fluid in the expansion bag and store the energy;

step 200, when the total energy storage value in the expansion bag is larger than the critical value of the valve, the valve is opened to release the stored energy, and the valve is closed to enter the energy storage stage again due to the reduction of pressure while the energy is released;

and 300, repeating the two steps to generate flow pulse, and adjusting the frequency of the pulse by adjusting the speed of the charging flow.

Embodiments of the invention are further characterized in that in step 200, the threshold value of the valve is less than the maximum pressure at which the fluid is pumped.

The embodiment of the present invention is further characterized in that, in step 200, the specific steps of closing the valve are as follows:

step 201, after the valve is opened, the pressure in the expansion bag is gradually reduced due to fluid loss;

step 202, continuously impacting a valve by the fluid of the expansion bag when the fluid flows out, and enabling the energy accumulator to slowly continue to be powered;

and step 203, when the impact force of the fluid is reduced to the sum of the elastic recovery of the valve and the action of the energy accumulator, the valve is closed, and the next stage of energy accumulation of the expansion bag is carried out.

Embodiments of the invention are further characterised in that the sum of the elastic recovery of the valve and the action of the accumulator is greater than the minimum pressure at which the fluid is pumped.

Compared with the prior art, the device has the advantages that:

this device simple structure, easily operation can seal the pipe or dose for the continuous malleation pulsed of pipeline automatically, lasts the malleation and avoids the refluence, does not need additionally to provide the energy, has alleviateed staff's burden, has improved the efficiency of during operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a check valve according to the present invention;

FIG. 3 is a schematic view of the structure of the resilient valve of the present invention;

FIG. 4 is a schematic flow chart of a pulse method of the present invention;

in the figure:

1-a housing; 2-a small diameter inlet; 3-a large-diameter outlet; 4-air vent; 5-a one-way valve; 6-expansion capsule; 7-a baffle plate; 8-elastic valve; 9-a support bar;

501-cylindrical tube; 502-circular ring; 503-blocking piece; 504-a rotating shaft;

801-a block; 802-a movable bar; 803-a spring; 804-chute.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the invention provides a positive pressure pulse valve, which comprises a housing 1 and an exhaust hole 4 arranged on the housing, wherein the exhaust hole 4 can exhaust air in the housing 1 in time so as to be capable of storing energy sufficiently, a small diameter inlet 2 and a large diameter outlet 3 are respectively arranged at two ends of the outer side of the housing 1, a one-way valve 5 is arranged in the large diameter outlet 3, an expansion bag 6 is arranged in the housing 1, one end of the expansion bag 6 is fixed at the small diameter inlet 2, the other end of the expansion bag is connected to a baffle 7 fixed at two sides in the housing 1, a support rod 9 is fixedly arranged in the large diameter outlet 3, and an elastic valve 8 is arranged on the support rod 9.

The check valve 5 comprises a cylindrical pipe 501, one end of the cylindrical pipe 501 is provided with a circular ring piece 502, the circular ring piece 502 is connected with a baffle 503 through a rotating shaft 504, the check valve 5 is fitted and sleeved in the small-diameter inlet 2 and the large-diameter inlet 3, the installation direction of the check valve 5 is consistent with the flow direction of liquid in the pipeline, the baffle 503 is opened by using the impulsive force of the liquid so that the liquid can flow to the outlet, and when the impulsive force in the pipeline is lost, the baffle 503 closes the pipeline with the circular ring 502 due to the self gravity, and the liquid is prevented from flowing back.

The elastic valve 8 is of a T-shaped structure and comprises a movable rod 802 and a stop block 801, a spring 803 is sleeved on the movable rod 802, a sliding groove 804 which penetrates through the movable rod 802 longitudinally is arranged in the movable rod 802, when the stop block 801 is subjected to certain thrust, the spring 803 is blocked by the supporting rod 9, the spring 803 is gradually compressed through an energy accumulator, the sliding groove 804 on the movable rod 802 moves on the supporting rod 9, and when the stop block 801 loses the thrust or the energy accumulation of the energy accumulator reaches a critical value, the elastic valve 8 is restored to an initial state under the action of elastic potential energy of the spring 803.

The area of the baffle 503 can cover the area of the inner ring of the ring 502, but is smaller than the area of the outer ring of the ring 502, so that the baffle 503 can completely block the passage of the ring 502, and the pipeline can be completely closed.

The elastic valve 8 has a certain elastic potential energy in an initial state, so that the stop 801 and the baffle 7 can be tightly attached together, and the expansion bag 6 can store energy conveniently. The baffle 7 is in an L-shaped structure, the right angle of the baffle 7 is fixed with one end of the expansion bag 6, and the size of an outlet formed by the two baffles 7 is smaller than that of the stop 801, so that the baffle 7 and the elastic valve 8 can form a sealed structure.

The working principle of the device is as follows: in an initial state, the elastic valve 8 closes the expansion bag 6, when liquid is continuously added into a pipeline, the expansion bag 6 stores energy, when the energy stored in the expansion bag 6 is fully larger than the thrust of the elastic valve 8 and the pressure is increased, the liquid extrudes the stop block 801 to compress the spring 803 to open the elastic valve 8, and the liquid flows to an outlet;

because the elastic potential energy of the spring 803 is only less than the pressure when the expansion bag 6 reaches the expansion critical, once the expansion bag 6 releases the pressure after reaching the critical, the spring 803 closes the expansion bag 6 again due to the elastic potential energy of the spring 803, so that the expansion bag 6 is refilled with liquid to accumulate pressure, and the elastic valve 8 is continuously and repeatedly opened and closed to achieve the pulse change of the outlet pressure in the process of continuously adding the liquid from the small-diameter inlet 2, thereby achieving the purpose of pulse liquid discharge.

In this embodiment, it is further preferred that an accumulator is provided in the chute 803 to continuously impact the stop 801 when fluid is continuously flowing out, and since an accumulator is provided behind the stop 801 to gradually accumulate energy in the stop 801 by the continuous impact action, the pressure of the pulse is preferably further controlled by releasing the push stop 801 to return to the initial position and closing the expansion bladder when the accumulated energy reaches a critical value. In the above, the accumulator may be of a spring type or a piston type.

In addition, as shown in FIG. 4, the present invention also provides

A method of pulsing a positive pressure pulsing valve comprising the steps of:

In addition, in step 200, the specific steps of closing the valve are as follows:

In step 200, the critical threshold value of the valve is less than the maximum pressure of the fluid pump, the sum of the elastic recovery of the valve and the action of the energy accumulator is greater than the minimum pressure of the fluid pump, and the check valve is closed in time to prevent the backflow of the fluid when pressure change continuously exists between the expansion bag and the elastic valve.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a positive pressure pulse valve, includes shell (1) and exhaust hole (4) of setting on the shell, its characterized in that, shell (1) outside both ends are provided with thin footpath entry (2) and thick footpath export (3) respectively, and the position that is close to thick footpath export (3) in shell (1) is equipped with baffle (7) install check valve (5) in the thick footpath export (3), shell (1) inside is provided with inflation bag (6), establish respectively at the both ends of inflation bag (6) thin footpath entry (2) with on baffle (7) thick footpath export (3) internal fixation installs bracing piece (9) fixed mounting has and controls inflation bag (6) exit linkage's elasticity valve (8) on bracing piece (9).

2. The positive pressure pulse valve according to claim 1, characterized in that the baffle (7) is fixedly arranged on the inner wall of the shell (1) in an annular shape, and the inner ring of the baffle (7) is fixedly connected with the expansion bladder (6) in a closing manner.

3. The positive pressure pulse valve according to claim 1, wherein the elastic valve (8) is T-shaped, the elastic valve (8) comprises a movable rod (802) and a stopper (801), a spring (803) is sleeved on the movable rod (802), one end of the spring (803) is fixed at the tail end of the movable rod (802), and the other end of the spring (803) is fixed on the stopper (801).

4. The positive pressure pulse valve according to claim 3, characterized in that the flapper (801) is moved by a spring (803) in the axial direction of a movable rod (802), and a chute (804) for mounting an accumulator is provided inside the movable rod (802).

5. A method of pulsing a positive pressure pulsing valve comprising the steps of:

6. The method of claim 5, wherein in step 200, the threshold value of the valve is less than the maximum pressure at which the fluid is pumped.

7. The method for pulsing a positive pressure pulse valve according to claim 5, wherein in step 200, the specific steps of closing the valve are:

8. The method of claim 7, wherein the sum of the elastic recovery of the valve and the accumulator action is greater than the minimum pressure at which the fluid is pumped.