Sand storage device for dental sandblasting machine

Abstract

The utility model discloses a sand storage device for a dental sandblasting machine. It relates to the field of dental instruments. It comprises a bottle body and a connecting assembly, wherein the connecting assembly is arranged at the bottle mouth of the bottle body, and the connecting assembly comprises a fixing ring, a check part and a sand outlet pipe for being plugged into the connecting head; the fixing ring is arranged at the opening of the bottle body and blocks the opening, the sand outlet pipe passes through the fixing ring and extends into the bottle body, the check part is sleeved on the sand outlet pipe and is placed on the end surface of the fixing ring facing the inside of the bottle body; a countersunk hole is provided on the fixing ring for placing the check part, a guide ring is sleeved below the countersunk hole, one end of the guide ring is inserted between the check part and the sand outlet pipe, an air inlet is provided on the connecting head, and when the fixing ring is plugged into the connecting head, the guide ring abuts against the air inlet. It has the effect of better sealing and less sand leakage.

Description

Technical Field

[0001] The utility model relates to the field of dental instruments, in particular to a sand storage device for a dental sandblasting machine. Background Art

[0002] The sandblasting tooth cleaning machine uses high-pressure airflow to spray dental sand powder onto the surface of the teeth, thereby cleaning the teeth. When sandblasting teeth, dental sandblasting equipment is needed, and the sand bottle is an indispensable sand filling tool bottle or sand storage bottle for sandblasting.

[0003] In order to prevent leakage of the contents in the existing sand storage bottle, a duckbill valve is generally used at the opening of the sand storage bottle. When the sand storage bottle is inhaled and used, the duckbill valve is stretched open to discharge sand. However, the duckbill valve often leaks sand, and the duckbill valve is insensitive to changes in air pressure, resulting in hysteresis in the duckbill valve when the air pressure changes, thereby causing sand leakage due to poor sealing. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a sand storage device for a dental sandblasting machine.

[0005] The utility model is implemented by the following technical scheme: a sand storage device for a dental sandblasting machine, comprising a bottle body and a connecting assembly, wherein the connecting assembly is arranged at the bottle mouth of the bottle body, and the connecting assembly comprises a fixing ring for plugging on the connecting head, a non-return part and a sand outlet pipe;

[0006] The fixing ring is arranged at the opening of the bottle body and blocks the opening, the sand outlet pipe passes through the fixing ring and extends into the bottle body, and the non-return portion is sleeved on the sand outlet pipe and placed on the end surface of the fixing ring facing the inside of the bottle body;

[0007] The fixing ring is provided with a countersunk hole for placing the non-return part, a guide ring is sleeved below the countersunk hole, one end of the guide ring is inserted between the non-return part and the sand outlet pipe, an air inlet hole is provided on the connecting head, and the guide ring is against the air inlet hole when the fixing ring is plugged into the connecting head.

[0008] The anti-return part includes a gasket, which is sleeved on the sand outlet pipe, the outer wall of the gasket is against the inner wall of the countersunk hole, the end of the gasket is against the outer wall of the sand outlet pipe, and an opening is formed between the gasket and the sand outlet pipe toward the guide ring for the guide ring to be inserted.

[0009] The gasket is folded inwardly toward one end of the countersunk hole to form a folded edge, and the outer edge of the folded edge is pressed tightly against the outer wall of the sand outlet pipe.

[0010] The end surface of the connector is provided with a receiving hole for accommodating the bottle body, the center of the receiving hole is provided with a through hole for inserting the sand outlet pipe, when the fixing ring is plugged onto the connector, the bottle body is placed in the receiving hole and the sand outlet pipe is inserted into the through hole.

[0011] A plurality of positioning protrusions are arranged at the bottom of the accommodating hole.

[0012] Compared with the prior art, the sand outlet pipe of the utility model passes through the middle of the non-return part, so that the non-return part and the side wall of the sand outlet pipe are in contact with each other to form a good seal. Once air starts to enter, the non-return part will be stretched open, so that a gap will be formed between the non-return part and the sand outlet pipe, and air will enter through the gap. Once the air is not inflated, the gap will close quickly, and the response speed will be faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 2 yes Figure 1 The enlarged structural diagram at A in the middle;

[0015] In the figure: 1. bottle body; 11. bottle mouth; 2. connecting assembly; 21. fixing ring; 211. countersunk hole; 22. sand outlet pipe; 23. check part; 231. gasket; 232. folded edge; 3. connector; 31. receiving hole; 32. through hole; 4. guide ring. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0017] like Figure 1-2As shown, a sand storage device for a dental sandblasting machine includes a bottle body 1 and a connecting assembly 2. The connecting assembly 2 is arranged at the bottle mouth 11 of the bottle body 1. The connecting assembly 2 includes a fixing ring 21, a check portion 23 and a sand outlet pipe 22 for being plugged into a connecting head 3. The fixing ring 21 is arranged at the opening of the bottle body 1 and blocks the opening. The sand outlet pipe 22 passes through the fixing ring 21 and extends into the bottle body 1. The check portion 23 is sleeved on the sand outlet pipe 22 and is placed on the end surface of the fixing ring 21 facing the inside of the bottle body 1. A countersunk hole 211 is provided on the fixing ring 21 for placing the check portion 23. A guide ring is sleeved below the countersunk hole 211. One end of the guide ring is inserted between the check portion 23 and the sand outlet pipe 22. An air inlet is provided on the connecting head 3. When the fixing ring 21 is plugged into the connecting head 3, the guide ring abuts against the air inlet. The sand outlet pipe 22 passes through the middle of the check portion 23, so that the check portion 23 is in contact with the side wall of the sand outlet pipe 22 to form a good seal. Once air starts to flow in, the check portion 23 will be stretched open, so that a gap will be formed between the check portion 23 and the sand outlet pipe 22, and air will enter through the gap. Once the gap is not inflated, the gap will close quickly, and the response speed will be faster.

[0018] The non-return portion 23 includes a gasket 231, which is sleeved on the sand outlet tube 22. The outer wall of the gasket 231 is pressed against the inner wall of the countersunk hole 211, and the end of the gasket 231 is pressed against the outer wall of the sand outlet tube 22. An opening is formed between the gasket 231 and the sand outlet tube 22, which faces the guide ring and is inserted into the guide ring. One end of the gasket 231 facing the countersunk hole 211 is folded inward to form a folded edge 232, and the outer edge of the folded edge 232 is pressed against the outer wall of the sand outlet tube 22. A receiving hole 31 for accommodating the bottle body 1 is provided on the end surface of the connector 3, and a through hole 32 for inserting the sand outlet tube 22 is provided in the center of the receiving hole 31. When the fixing ring 21 is plugged into the connector 3, the bottle body is placed in the receiving hole 31 and the sand outlet tube 22 is inserted into the through hole 32. The sand outlet pipe 22 passes through the middle of the check portion 23, so that the check portion 23 is in contact with the side wall of the sand outlet pipe 22 to form a good seal. Once air starts to flow in, the check portion 23 will be stretched open, so that a gap will be formed between the check portion 23 and the sand outlet pipe 22, and air will enter through the gap. Once the gap is not inflated, the gap will close quickly, and the response speed will be faster.

[0019] A plurality of positioning protrusions are provided at the bottom of the receiving hole 31. When inserting, the sand outlet tube 22 is inserted into the through hole 32 and the positioning protrusions are correspondingly inserted into the corresponding positions of the bottle body 1 to realize the positioning of the bottle body 1, thereby making the installation more convenient.

[0020] The sand outlet pipe 22 of the utility model passes through the middle of the check portion 23, so that the check portion 23 and the side wall of the sand outlet pipe 22 are in contact with each other to form a good seal. Once air starts to enter, the check portion 23 will be opened to form a gap between the check portion 23 and the sand outlet pipe 22, so that air can enter through the gap. Once the air is not inflated, the gap will close quickly, and the response speed will be faster.

[0021] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A sand storage device for a dental sandblasting machine, characterized in that: It comprises a bottle body and a connecting assembly, wherein the connecting assembly is arranged at the bottle mouth of the bottle body, and the connecting assembly comprises a fixing ring for plugging on a connecting head, a non-return part and a sand outlet pipe; The fixing ring is arranged at the opening of the bottle body and blocks the opening, the sand outlet pipe passes through the fixing ring and extends into the bottle body, and the non-return portion is sleeved on the sand outlet pipe and placed on the end surface of the fixing ring facing the inside of the bottle body; The fixing ring is provided with a countersunk hole for placing the non-return part, a guide ring is sleeved below the countersunk hole, one end of the guide ring is inserted between the non-return part and the sand outlet pipe, an air inlet hole is provided on the connecting head, and the guide ring is against the air inlet hole when the fixing ring is plugged into the connecting head.

2. A dental sandblasting machine sand storage device according to claim 1, characterized in that: The anti-return part includes a gasket, which is sleeved on the sand outlet pipe, the outer wall of the gasket is against the inner wall of the countersunk hole, the end of the gasket is against the outer wall of the sand outlet pipe, and an opening is formed between the gasket and the sand outlet pipe toward the guide ring for the guide ring to be inserted.

3. A dental sandblasting machine sand storage device according to claim 2, characterized in that: The gasket is folded inwardly toward one end of the countersunk hole to form a folded edge, and the outer edge of the folded edge is pressed tightly against the outer wall of the sand outlet pipe.

4. A dental sandblasting machine sand storage device according to claim 1, characterized in that: The end surface of the connector is provided with a receiving hole for accommodating the bottle body, the center of the receiving hole is provided with a through hole for inserting the sand outlet pipe, when the fixing ring is plugged onto the connector, the bottle body is placed in the receiving hole and the sand outlet pipe is inserted into the through hole.

5. A dental sandblasting machine sand storage device according to claim 4, characterized in that: A plurality of positioning protrusions are arranged at the bottom of the accommodating hole.

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