Liquid supply bag and dental micro-power system

Abstract

The utility model belongs to the field of machinery, particularly belongs to the field of dental medical equipment, discloses a liquid supply bag for a dental micro-power system and the dental micro-power system, and improves the continuity of liquid supply. A liquid supply bag comprises a bag body made of soft materials and a bag opening connected with the bag body in a sealed mode, the bag body is used for containing liquid, the bag opening is used for hoisting and being connected with a pipeline for conveying the liquid, the liquid supply bag further comprises a one-way valve arranged in the bag opening, a water inlet of the one-way valve faces the bag body, and a water outlet of the one-way valve faces the outside. And the liquid flows into the pipeline through the one-way valve when the bag body is subjected to external pressure. According to the liquid supply bag provided by the utility model, the one-way valve is arranged at the position of the bag opening, so that liquid is prevented from flowing back in a repeated operation gap, air is further prevented from entering the bag body again, and the problem of liquid cutoff cannot occur. And when being applied to a dental micro-power system or other systems, the system has higher safety.

Description

Technical Field

[0001] The utility model belongs to the field of machinery, in particular to the field of dental medical equipment, and discloses a liquid supply bag used in a dental micro-power system and a dental micro-power system. Background Art

[0002] In the dental field, dentists need to use dental handpieces for related dental treatments. The dental handpiece uses a handpiece connector and pipelines to connect to the dental treatment chair or dental micro-power system, and connects the water and air channels. After the dental handpiece is started, the compressed air drives the wind wheel in the dental handpiece to rotate, driving the drill to run at high speed, and the water channel sprays water to cool the drill. Because dental handpieces need water to cool cutting tools such as drills when working, especially high-speed handpieces, because compressed air flows out of the shaft head when working, a water column or water mist with a certain pressure must be used to cool the cutting drill.

[0003] The pressure fluid supply method currently widely used in dental micro-power system devices is shown in Figure 1 As shown, Figure 1 The figure is a schematic diagram of the working state of the dental micro-power system in the prior art when compressed air is not supplied. The sealed liquid supply bag 4 is a soft bag body, and the bag body of the liquid supply bag 4 is filled with liquid 3 required for dental treatment, and is suspended in the pressure container 2 with the bag mouth facing upward. The bottle insertion needle 10 is inserted into the bag mouth of the liquid supply bag 4 from above, and the bottle insertion needle 10 is connected to one end of the water supply line 9. The water supply line 9 is connected to the water channel of the dental handpiece through the water channel interface 12 of the dental handpiece. A gas inlet is set at the bottom of the pressure container 2, which is the entrance for the compressed air 1 to enter the pressure container 2. Figure 2 As shown, it is a schematic diagram of the working state of the dental micro-power system when compressed air is introduced. After the dental micro-power system is started, the compressor starts to run, and the pressure generated by the compressed air 1 presses the liquid 3 in the liquid supply bag 4 to the bottle insertion needle 10, and is supplied to the dental handpiece 8 through the water supply pipeline 9 and the water channel in the handpiece pipeline, and the liquid is sprayed to the polishing area through the handpiece head. The compressed air is also supplied to the air circuit of the dental handpiece through the compressed air interface 11 of the dental handpiece and the air circuit pipeline 7, which is used to drive the operation of the dental drill handpiece.

[0004] During dental treatment, doctors need to restart the machine several times. If the coolant is interrupted during repeated restarts and cannot be sprayed out in time, it may cause overheating of the grinding area and cause danger. Therefore, how to ensure the continuity of the coolant is an issue that needs to be considered in dental micro-power systems. In dental micro-power systems, distilled water or sterile water is generally used as liquid, and it may also be saline, drinking water or mouthwash. If it is a portable medical micro-power system that requires liquid supply, there may also be a problem of preventing liquid 3 from flowing continuously. Utility Model Content

[0005] In order to improve the continuity of liquid supply, the utility model provides a liquid supply bag used in a dental micro-power system and a dental micro-power system.

[0006] The utility model provides a liquid supply bag, comprising a bag body made of soft material and a bag opening sealed and connected to the bag body, wherein the bag body is used to load liquid, and the bag opening is used to hoist and connect a pipeline for transmitting the liquid, and further comprises a one-way valve arranged in the bag opening, wherein the water inlet of the one-way valve faces the bag body and the water outlet faces the outside, and the liquid flows into the pipeline through the one-way valve when the bag body is subjected to external pressure.

[0007] In one example, the one-way valve includes a valve body and a valve ball, the valve ball is located in the valve body, one end of the valve body is a water inlet, and the other end is a water outlet, and the inner wall of the valve body has an annular slope, and the valve ball is tangent to the annular slope to form an annular seal.

[0008] Wherein, the annular slope is an arc-shaped slope or a straight-line slope, and the diameter of the water inlet is smaller than the diameter of the valve ball.

[0009] Wherein, at least two gripping claws extend out of the water outlet, and the at least two gripping claws and the annular slope together form a cocoon-shaped space, and the valve ball is located in the cocoon-shaped space.

[0010] Wherein, the bag opening comprises a connecting tube and a bottle inserting cover, the connecting tube is sealingly connected to the bottle inserting cover, the connecting tube is located between the bag body and the bottle inserting cover, and the one-way valve is located in the connecting tube.

[0011] The utility model provides a dental micro-power system, comprising a pressure vessel, an air compressor and a switch control valve, and also comprising any of the aforementioned liquid supply bags, wherein the liquid supply bag comprises a bag body and a bag opening, and the bag opening is connected to a water channel interface of a dental handpiece through a bottle insertion needle and a pipeline;

[0012] The pressure container comprises a sealing cover and a sealing tank body, the sealing cover and the sealing tank body are sealed and assembled, the sealing cover is provided with a first slot hole, and the sealing tank body is provided with a second slot hole;

[0013] The bag opening is hoisted in the first slot, the bag body is assembled in the tank body, and the second slot is used to connect the air outlet of the air compressor through an air pipe;

[0014] The switch control valve is connected to the air compressor and is used to control the working state of the air compressor.

[0015] In the liquid supply bag provided by the utility model, a one-way valve is arranged at the bag opening, so that the liquid is prevented from flowing back during repeated operations, thereby preventing air from entering the bag again, so that the problem of liquid interruption does not occur. It is applied to dental micro-power systems or other systems, and has higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the working state of the dental micro-power system in the prior art when compressed air is not supplied;

[0017] Figure 2 It is a schematic diagram of the working state of the dental micro-power system when compressed air is introduced in the prior art;

[0018] Figure 3 A schematic diagram of the overall structure of the liquid supply bag provided by the utility model;

[0019] Figure 4 A schematic diagram of the structure of the bag opening of the liquid supply bag and the one-way valve provided by the utility model;

[0020] Figure 5 A schematic diagram of the valve body structure of a one-way valve in a liquid supply bag provided by the utility model;

[0021] Figure 6 A cross-sectional view of a one-way valve in a liquid supply bag provided by the utility model;

[0022] Figure 7 A schematic diagram of the principle of forming an annular seal between the valve ball and the valve body in the one-way valve in the liquid supply bag provided by the utility model.

[0023] Reference numerals

[0024] 1. Compressed air; 2. Pressure vessel; 3. Liquid; 4. Liquid supply bag; 5. Pressure vessel; 6. O-ring; 7. Air pipeline; 8. Dental handpiece; 9. Water supply pipeline; 10. Bottle puncture needle; 11. Compressed air interface; 12. Water interface

[0025] 21. Sealed cover; 22. Sealed tank

[0026] 211, first slot; 221, second slot

[0027] 41. bag body; 42. bag opening; 43. one-way valve

[0028] 421, connecting tube; 422, bottle cap

[0029] 431, valve body; 432, valve ball; 433 gripper

[0030] 4A, water inlet; 4B, water outlet; 4C, circular slope; 4D, circular sealing schematic line DETAILED DESCRIPTION

[0031] In the dental micro-power system, when the air compressor stops supplying air, the liquid 3 in the mobile phone waterway and the water supply pipeline 9 flows back into the liquid supply bag 4 due to the liquid level difference and the deformation of the liquid supply bag 4, and at the same time, air enters the liquid supply bag 4, forming a Figure 1 The state shown. When restarting, the air in the upper part of the liquid supply bag 4 needs to be discharged first, thereby causing the coolant to be cut off. If the operator forgets to wait during this period, it may cause the risk of overheating in the grinding area. For this reason, the utility model provides a liquid supply bag 4 with a waterproof back-absorption function to prevent the liquid 3 from flowing back into the liquid supply bag 4 during the intervals of repeated operations, thereby preventing air from entering the liquid supply bag 4, so that the liquid 3 can be directly squeezed out each time the startup is repeated, and the phenomenon of liquid 3 being cut off will not occur. Various dangers caused by liquid cut-off can be prevented, and it has higher safety in specific application scenarios.

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0033] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, Figure 3 This is a schematic diagram of the overall structure of the liquid supply bag 4 provided by the utility model. Figure 4 This is a schematic diagram of the structure of the bag opening 42 and the one-way valve 43 of the liquid supply bag 4 provided by the utility model. Figure 5 This is a schematic structural diagram of the valve body 431 of the one-way valve 43 in the liquid supply bag 4 provided by the utility model. Figure 6 This is a cross-sectional view of the one-way valve 43 in the liquid supply bag 4 provided by the utility model. Figure 7 This is a schematic diagram of the principle of forming an annular seal between the valve ball 432 and the valve body 431 in the one-way valve 43 in the liquid supply bag 4 provided by the utility model.

[0034] The liquid supply bag 4 provided by the utility model comprises a bag body 41 made of soft material and a bag opening 42 sealed and connected to the bag body 41. The bag body 41 is used to carry liquid 3. According to different application scenarios, the liquid 3 carried by the bag body 41 may include distilled water, saline, drinking water, mouthwash or sterile water. Figure 2As shown, the bag opening 42 of the liquid supply bag 4 provided by the utility model is used for hoisting and connecting the pipeline for transmitting the liquid 3. It is assembled into the sealed tank of various micro portable medical systems in a hoisting manner with the bag opening 42 facing upward, and the liquid 3 in the bag body 41 is pressed out from the bag opening 42 at the top by compressed air 1.

[0035] In order to prevent air from entering the bag body 41 when the operation is interrupted, the liquid supply bag 4 provided by the utility model also includes a one-way valve 43 arranged in the bag opening 42, the water inlet 4A of the one-way valve 43 faces the bag body 41 and the water outlet 4B faces the outside, and the liquid 3 flows into the water pipeline through the one-way valve 43 when the bag body 41 is subjected to external pressure.

[0036] 9. In a specific example, the one-way valve 43 includes a valve body 431 and a valve ball 432. The valve ball 432 is located in the valve body 431. One end of the valve body 431 is a water inlet 4A, and the other end is a water outlet 4B. The inner wall of the valve body 431 has an annular slope 4C. The valve ball 432 and the annular slope 4C are tangent to form an annular seal. Figure 7 As shown, the annular sealing schematic line 4D is schematically drawn. It should be noted that the annular slope 4C is an arc slope or a straight slope, and the diameter of the water inlet 4A is smaller than the diameter of the valve ball 432.

[0037] In a specific example, the water outlet 4B of the valve body 431 further extends at least two grippers 433, and the at least two grippers 433 and the annular slope 4C together form a cocoon-shaped space, and the valve ball 432 is located in the cocoon-shaped space, and water can flow out from the openings of each two adjacent grippers 433. The at least two grippers 433 can be two, three or four.

[0038] The liquid supply bag 4 provided by the utility model comprises a bag opening 42 including a connecting tube 421 and a bottle inserting cover 422, the connecting tube 421 is sealingly connected to the bottle inserting cover 422, the connecting tube 421 is located between the bag body 41 and the bottle inserting cover 422, and the one-way valve 43 is located in the connecting tube 421, preferably, at the position where the connecting tube 421 and the bag body 41 are connected.

[0039] The bag body 41 of the liquid supply bag 4 provided by the utility model can be a flat bag body 41 made of soft pressure-resistant material.

[0040] The liquid supply bag 4 provided by the utility model can be used in any dental micro-power system or other similar portable medical micro-systems. Specifically, the dental micro-power system includes a pressure container 2, an air compressor and a switch control valve, and the liquid supply bag 4 provided by the utility model. The liquid supply bag 4 includes a bag body 41 and a bag opening 42, and the bag opening 42 is connected to the water channel interface 12 of the dental handpiece 8 through a bottle insertion needle and a water channel pipeline 9.

[0041] The pressure container 22 includes a sealed cover 21 and a sealed tank body 22, the sealed cover 21 and the sealed tank body 22 are sealed and assembled, the sealed cover 21 is provided with a first slot 211, and the sealed tank body 22 is provided with a second slot 221. The connecting pipe 421 of the bag mouth 42 is hoisted in the first slot 211, the bag body 41 is assembled in the sealed tank body 22 in a hoisting manner, the second slot 221 is used to connect the air outlet of the air compressor through the air pipe, and the switch control valve is connected to the air compressor to control the working state of the air compressor. In order to match the shape of the liquid supply bag 4 provided by the utility model, the pressure container 2 can be a flat container made of hard plastic or metal material.

[0042] The liquid supply bag 4 provided by the utility model can contain distilled water, physiological saline, drinking water, mouthwash or sterile water. The liquid supply bag 4 is loaded into the pressure container 22, and the bag opening 42 and the sealing cover 21 can also be sealed with an O-ring 6. Before use, the bag opening 42 of the liquid supply bag 4 can be sterilized by wiping with alcohol. One end of the sterilized water supply pipeline 9 is connected to the water channel of the sterilized dental handpiece 8 through the water channel interface 12 of the dental handpiece 8, and the other end is equipped with a bottle insertion needle 10, and the bottle insertion needle 10 is inserted into the bottle insertion cover 422 of the liquid supply bag 4. The air line 7 of the dental handpiece 8 is connected to the air outlet of the air compressor through the compressed air interface 11.

[0043] When the dental handpiece 8 is working, the compressed air 1 from the air compressor is not only supplied to the dental handpiece 8 through the water pipeline 7, but also connected to the pressure container 2 installed with the liquid supply bag 4. The compressed air 1 in the pressure container 2 presses the liquid supply bag 4, and squeezes the liquid 3 in the liquid supply bag 4 into the bottle insertion needle 10 inserted into the bag opening 42. Figure 4 As shown, water flows through the central hole reserved on the one-way valve 43, pushing the built-in valve ball 432, the one-way valve 43 opens, and water flows from the bottle puncture needle to the sterilized water supply line 9, and is sprayed out through the head of the dental handpiece 8 to cool the drill.

[0044] When the dental handpiece 8 stops rotating, the air compressor stops supplying air at the same time, the compressed air 1 in the pressure container 2 disappears, and the liquid supply bag 4 is no longer squeezed by the compressed air 1, so the liquid supply stops. At this time, the water in the water supply line 9 flows back due to the liquid level difference and the deformation of the packaging of the liquid supply bag 4. Figure 6 and Figure 7 As shown, the return water flow drives the valve ball 432 and the annular inclined surface of the valve body 431 to be tangent to each other, forming an annular seal, preventing the water flow from continuing to return to the liquid supply bag 4, thereby preventing air from entering the liquid supply bag 4. When restarting, there is no need to exhaust the air in the liquid supply bag 4, so there will be no liquid interruption after restarting.

[0045] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above are only specific implementation methods of the utility model and are not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A liquid supply bag, comprising a bag body made of soft material and a bag opening sealed and connected to the bag body, the bag body is used to load liquid, and the bag opening is used for hoisting and connecting a pipeline for transmitting the liquid, characterized in that: It also includes a one-way valve arranged in the bag opening, wherein the water inlet of the one-way valve faces the bag body and the water outlet faces the outside, and the liquid flows into the pipeline through the one-way valve when the bag body is subjected to external pressure.

2. The liquid supply bag according to claim 1, characterized in that: The one-way valve includes a valve body and a valve ball, wherein the valve ball is located in the valve body, one end of the valve body is a water inlet, and the other end is a water outlet, and an annular slope is provided on the inner wall of the valve body, and the valve ball and the annular slope are tangent to form an annular seal.

3. The liquid supply bag according to claim 2, characterized in that: The annular slope is an arc-shaped slope or a straight-line slope, and the diameter of the water inlet is smaller than the diameter of the valve ball.

4. The liquid supply bag according to claim 3, characterized in that: At least two gripping claws extend from the water outlet, and the at least two gripping claws and the annular slope together form a cocoon-shaped space, and the valve ball is located in the cocoon-shaped space.

5. The liquid supply bag according to claim 2, characterized in that: The at least two gripping claws include three or four.

6. The liquid supply bag according to any one of claims 1 to 5, characterized in that: The bag opening comprises a connecting tube and a bottle inserting cover, the connecting tube is sealingly connected to the bottle inserting cover, the connecting tube is located between the bag body and the bottle inserting cover, and the one-way valve is located in the connecting tube.

7. The liquid supply bag according to claim 6, characterized in that: The bag body comprises a flat bag body made of soft material.

8. A dental micro-power system, comprising a pressure vessel, an air compressor and a switch control valve, characterized in that: It also includes the liquid supply bag according to any one of claims 1 to 7, wherein the liquid supply bag comprises a bag body and a bag opening, and the bag opening is connected to the water channel interface of the dental handpiece through a bottle puncture needle and a pipeline; The pressure container comprises a sealing cover and a sealing tank body, wherein the sealing cover and the sealing tank body are sealed and assembled, the sealing cover is provided with a first slot hole, and the sealing tank body is provided with a second slot hole; The bag opening is hoisted in the first slot, the bag body is assembled in the tank body, and the second slot is used to connect the air outlet of the air compressor through an air pipe; The switch control valve is connected to the air compressor and is used to control the working state of the air compressor.

9. The dental micro-power system according to claim 8, characterized in that: The pressure container comprises a flat container made of hard plastic or metal material.

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