A positive pressure pulse valve and pulse method thereof

Abstract

An embodiment of the present invention discloses a positive pressure pulse valve, comprising an outer shell and an exhaust hole arranged on the outer shell, wherein a small diameter inlet and a large diameter outlet are respectively arranged at two ends of the outer side of the outer shell, and a baffle is arranged in the outer shell near the large diameter outlet, a one-way valve is installed in the large diameter outlet, an expansion bag is arranged inside the outer shell, two ends of the expansion bag are respectively arranged on the small diameter inlet and the baffle, a support rod is fixedly installed in the large diameter outlet, and an elastic valve door that contacts with the outlet of the expansion bag and controls the switch of the outlet of the expansion bag is fixedly installed on the support rod; a pulse method of a positive pressure pulse valve is also included; the device has a simple structure and is easy to operate, and can automatically provide continuous positive pressure pulse sealing or drug administration to the pipeline, and continuous positive pressure can avoid backflow, thereby reducing the burden on the staff and improving work efficiency.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of pulse valves, and in particular to a positive pressure pulse valve and a pulse method thereof. Background Art

[0002] Pulse sealing or drug administration is a clinical application of deep venous catheterization. It is suitable for patients who have difficulty in venous puncture and need long-term infusion. It can ensure that fluids and drugs are promptly delivered to the patient during rescue. It is fast, efficient, safe, and relieves the patient's pain. It is often used for subclavian vein catheterization. Since the positive pressure pulse valve is very practical at work, many pipelines require continuous positive pressure pulse sealing or drug administration at work. The use of pulse valves guarantees the efficiency of work to a large extent, and thus is widely used at work.

[0003] However, in the prior art, pulses are mainly realized in two ways, the first is electronic control, and the second is manual control. The former, such as an electromagnetic pulse valve disclosed in publication number CN206054882U, realizes the corresponding function through an electromagnetic pulse valve, while the latter is mainly controlled by the experience of technicians. However, these two positive pressure pulse valves still have the following defects:

[0004] In electronically controlled pulse valves, existing pulse valve devices have complex structures and high failure rates, while manual operation is too cumbersome and not conducive to rapid operation and standardized use, which increases the burden on staff at work and leads to low work efficiency. Therefore, it is necessary to design a positive pressure pulse valve with a simple structure and easy operation. Summary of the invention

[0005] In view of the deficiencies in the background technology, the embodiments of the present invention provide a positive pressure pulse valve and a pulse method thereof, which can effectively solve the problems in the prior art.

[0006] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0007] A positive pressure pulse valve comprises an outer shell and an exhaust hole arranged on the outer shell, wherein a small diameter inlet and a large diameter outlet are respectively arranged at two ends of the outer side of the outer shell, and a baffle is provided in the inner shell near the large diameter outlet, and a one-way valve is installed in the large diameter outlet, and an expansion bag is arranged inside the outer shell, and two ends of the expansion bag are respectively arranged on the small diameter inlet and the baffle, and a support rod is fixedly installed in the large diameter outlet, and an elastic valve that contacts with the expansion bag outlet and controls the switch of the expansion bag outlet is fixedly installed on the support rod.

[0008] The embodiment of the present invention is also characterized in that the baffle is fixedly mounted on the inner wall of the shell in an annular shape, and the inner ring of the baffle is closed and fixedly connected to the expansion bag.

[0009] The embodiment of the present invention is also characterized in that the elastic valve is T-shaped, and the elastic valve includes a movable rod and a block, a spring is mounted on the movable rod, one end of the spring is fixed to the end of the movable rod, and the other end of the spring is fixed to the baffle.

[0010] The embodiment of the present invention is also characterized in that the baffle moves along the axial direction of the movable rod through a spring, and a slide groove for installing an accumulator is provided inside the movable rod. In addition, the present invention also provides a pulse method of a positive pressure pulse valve, comprising the following steps:

[0011] Step 100, filling the fluid from the inlet so that the expansion bag continuously accumulates the fluid and stores energy;

[0012] Step 200: When the total energy stored in the expansion bag is greater than the critical value of the valve, the valve opens to release the stored energy. As the energy is released, the pressure is reduced and the valve closes to enter the energy storage stage again.

[0013] Step 300: Repeat the above two steps to generate flow pulses, and adjust the frequency of the pulses by adjusting the speed of the charging flow.

[0014] The embodiment of the present invention is also characterized in that, in step 200, the critical threshold of the valve is less than the maximum pressure of the fluid pumped in.

[0015] The embodiment of the present invention is also characterized in that, in step 200, the specific steps of closing the valve are:

[0016] Step 201, when the valve is opened, the pressure in the expansion bag gradually decreases due to the loss of fluid;

[0017] Step 202, the fluid in the expansion bag continuously impacts the valve when flowing out, and causes the accumulator to slowly continue to release energy;

[0018] 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 accumulator, the valve is closed and the next stage of the expansion bag energy storage stage is entered.

[0019] The embodiment of the present invention is also characterized in that the sum of the elastic recovery of the valve and the action of the accumulator is greater than the minimum pressure of the fluid pumped in.

[0020] Compared with the existing device, the beneficial effects of this device are:

[0021] The device has a simple structure and is easy to operate. It can automatically seal the tube or administer medicine in a continuous positive pressure pulse manner. The continuous positive pressure avoids reflux and does not require additional energy, thereby reducing the burden on staff and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the one-way valve structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the elastic valve structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the pulse method flow of the present invention;

[0028] In the figure:

[0029] 1-housing; 2-small diameter inlet; 3-large diameter outlet; 4-exhaust hole; 5-check valve; 6-expansion bag; 7-baffle; 8-elastic valve; 9-support rod;

[0030] 501-cylindrical tube; 502-circular ring; 503-blocking piece; 504-rotating shaft;

[0031] 801-block; 802-movable rod; 803-spring; 804-slide slot. DETAILED DESCRIPTION

[0032] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 3As shown, the present invention provides a positive pressure pulse valve, including a shell 1 and an exhaust hole 4 arranged on the shell, the exhaust hole 4 can exhaust the air in the shell 1 in time to facilitate sufficient energy storage, the outer ends of the shell 1 are respectively provided with a small diameter inlet 2 and a large diameter outlet 3, a one-way valve 5 is provided in the large diameter outlet 3, an expansion bag 6 is provided inside the shell 1, one end of the expansion bag 6 is fixed to the small diameter inlet 2 and the other end is connected to the baffle 7 fixed on both sides of the inside of the shell 1, a support rod 9 is fixedly installed in the large diameter outlet 3, and an elastic valve 8 is installed on the support rod 9.

[0034] The one-way valve 5 comprises a cylindrical tube 501, at one end of which a circular ring piece 502 is arranged, and a baffle 503 is connected to the circular piece 502 via a rotating shaft 504. The one-way valve 5 is fitted in the small-diameter inlet 2 and the large-diameter inlet 3, and the installation direction of the one-way valve 5 is consistent with the flow direction of the liquid in the pipeline. The baffle 503 is opened by the impulse of the liquid so that the liquid can flow to the outlet. When the impulse in the pipeline is lost, the baffle 503 closes the pipeline together with the circular ring 502 due to its own gravity to prevent the liquid from flowing back.

[0035] The elastic valve 8 is a "T"-shaped structure, including a movable rod 802 and a stopper 801. A spring 803 is mounted on the movable rod 802, and a longitudinal sliding groove 804 is arranged inside the movable rod 802. When the stopper 801 is subjected to a certain thrust, since the spring 803 is blocked by the support rod 9, the spring 803 will be gradually compressed through the accumulator, and the sliding groove 804 on the movable rod 802 moves on the support rod 9. When the stopper 801 loses thrust or the energy stored in the accumulator reaches a critical value, the elastic valve 8 returns to its initial state under the action of the elastic potential energy of the spring 803.

[0036] The area of ​​the baffle 503 can cover the inner ring area of ​​the ring 502, but is smaller than the outer ring area of ​​the ring 502, ensuring that the baffle 503 can completely block the passage of the ring 502, so that the pipeline can be completely closed.

[0037] The elastic valve 8 has a certain elastic potential energy in the initial state, which allows the stopper 801 to fit closely with the baffle 7, so as to facilitate the energy storage of the expansion bag 6. The baffle 7 is an "L"-shaped structure, and the baffle 7 is fixed to one end of the expansion bag 6 at a right angle, and the outlet formed by the two baffles 7 is smaller than the size of the stopper 801, so as to ensure that the baffle 7 and the elastic valve 8 can form a sealed structure.

[0038] The working principle of the device is as follows: in the initial state, the elastic valve 8 closes the expansion bag 6. When liquid is continuously added to the pipeline, the expansion bag 6 accumulates energy. When the expansion bag 6 fully accumulates energy greater than the thrust of the elastic valve 8, when the pressure is increased, the liquid squeezes the stopper 801 to compress the spring 803 to open the elastic valve 8, and the liquid flows to the outlet;

[0039] Since the elastic potential energy of the spring 803 is only less than the pressure of the expansion bag 6 when it reaches the critical expansion, once the expansion bag 6 releases the pressure after reaching the critical value, the spring 803 will close the expansion bag 6 again due to its own elastic potential energy, so that the expansion bag 6 is refilled with liquid to accumulate pressure. In the process of continuously adding liquid from the fine-diameter inlet 2, the elastic valve 8 will repeatedly open and close to achieve a pulse change in the outlet pressure, thereby realizing the purpose of pulsed liquid discharge.

[0040] In this embodiment, it is further preferred that an accumulator is arranged in the chute 803. When the fluid continuously flows out, it will continuously impact the block 801. Since the accumulator is arranged behind the block 801, the block 801 gradually accumulates energy through continuous impact. When the accumulated energy reaches a critical value, the block 801 is released to push it back to the initial position and close the expansion bag. In this way, the pressure of the pulse can be further controlled. In the above, the accumulator can be a spring type or a piston.

[0041] In addition, if Figure 4 As shown, the present invention also provides

[0042] A pulse method for a positive pressure pulse valve comprises the following steps:

[0043] Step 100, filling the fluid from the inlet so that the expansion bag continuously accumulates the fluid and stores energy;

[0044] Step 200: When the total energy stored in the expansion bag is greater than the critical value of the valve, the valve opens to release the stored energy. As the energy is released, the pressure is reduced and the valve closes to enter the energy storage stage again.

[0045] Step 300: Repeat the above two steps to generate flow pulses, and adjust the frequency of the pulses by adjusting the speed of the charging flow.

[0046] In addition, in step 200, the specific steps of closing the valve are:

[0047] Step 201, when the valve is opened, the pressure in the expansion bag gradually decreases due to the loss of fluid;

[0048] Step 202, the fluid in the expansion bag continuously impacts the valve when flowing out, and causes the accumulator to slowly continue to release energy;

[0049] 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 accumulator, the valve is closed and the next stage of the expansion bag energy storage stage is entered.

[0050] In step 200, the critical threshold of the valve is less than the maximum pressure of the fluid pumped in, the sum of the elastic recovery of the valve and the action of the accumulator is greater than the minimum pressure of the fluid pumped in, and when the pressure between the expansion bag and the elastic valve continues to change, the one-way valve is closed in time to prevent the backflow of the fluid.

[0051] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A pulse method for a positive pressure pulse valve, characterized in that: The positive pressure pulse valve comprises a shell (1) and an exhaust hole (4) arranged on the shell, a small diameter inlet (2) and a large diameter outlet (3) are respectively arranged at two ends of the outer side of the shell (1), a baffle (7) is arranged in the shell (1) at a position close to the large diameter outlet (3), a one-way valve (5) is installed in the large diameter outlet (3), an expansion bag (6) is arranged inside the shell (1), two ends of the expansion bag (6) are respectively arranged on the small diameter inlet (2) and the baffle (7), a support rod (9) is fixedly installed in the large diameter outlet (3), and an elastic valve (8) which contacts the outlet of the expansion bag (6) and controls the opening and closing of the outlet of the expansion bag (6) is fixedly installed on the support rod (9); The baffle (7) is fixedly mounted on the inner wall of the outer shell (1) in an annular shape, and the inner ring of the baffle (7) is closed and fixedly connected to the expansion bag (6); The elastic valve (8) is T-shaped and 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 to the end of the movable rod (802), and the other end of the spring (803) is fixed to the stopper (801); The stopper (801) moves along the axial direction of the movable rod (802) via a spring (803), and a sliding groove (804) for installing an accumulator is provided inside the movable rod (802); The pulse method of the positive pressure pulse valve comprises the following steps: Step 100, filling the fluid from the inlet so that the expansion bag continuously accumulates the fluid and stores energy; Step 200: When the total energy stored in the expansion bag is greater than the critical value of the valve, the valve opens to release the stored energy. As the energy is released, the pressure is reduced and the valve closes to enter the energy storage stage again. Step 300, repeat the above two steps to generate flow pulses, and adjust the frequency of the pulses by adjusting the speed of the charging flow; In step 200, the critical threshold of the valve is less than the maximum pressure of the fluid pumped in; In step 200, the specific steps of closing the valve are: Step 201, when the valve is opened, the pressure in the expansion bag gradually decreases due to the loss of fluid; Step 202, the fluid in the expansion bag continuously impacts the valve when flowing out, and causes the accumulator to slowly continue to release energy; 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 accumulator, the valve is closed, and the next stage of the expansion bag energy storage stage is entered; The sum of the elastic recovery of the valve and the action of the accumulator is greater than the minimum pressure of the fluid pumped in.

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