Pneumatic control water diaphragm valve for dental therapeutic apparatus

Abstract

A pneumatic control water diaphragm valve used on a dental therapeutic apparatus comprises a valve body assembly, a control channel, an inflow cavity and an outflow cavity are formed in the valve body assembly, a diaphragm forming the control cavity with the control channel is arranged on the valve body assembly, and the diaphragm is connected with a valve element assembly used for controlling connection and disconnection between the inflow cavity and the outflow cavity; at least one of the control cavity, the inflow cavity and the outflow cavity is communicated with an installation insertion hole, and a connector with the insertion end inserted into the installation insertion hole is arranged on the outer side of the valve body assembly. The connector is provided with a clamping position, and the valve body assembly is provided with a clamping piece which is clamped in the clamping position so that the connector can be installed on the valve body assembly in a buckled mode. According to the valve body assembly, the connector can be quickly installed, the installation efficiency of the connector is improved, the connector can be installed on the valve body assembly without adopting a threaded connection mode, the trouble of fixing by using a wrench is avoided, and the installation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of dental control valve technology, specifically to a pneumatically controlled water diaphragm valve for use in dental treatment instruments. Background Technology

[0002] The dental hexagonal water valve is a key component of a dental treatment unit; it is a pneumatically controlled water valve.

[0003] Referring to the pressure valve disclosed in the technical solution of CN309164941S, existing pressure valves typically have threaded holes connecting to their internal cavity. These threaded holes are fitted with pipe fittings for connecting pipelines, allowing the pressure valve to receive control gas and for fluid to enter and exit the valve. However, connecting the pipe fittings to the pressure valve requires a specialized wrench, making installation inconvenient. Furthermore, tightening the pipe fittings requires multiple rotations, resulting in a lengthy installation time. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a pneumatically controlled water diaphragm valve for use in dental treatment instruments.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A pneumatically controlled water diaphragm valve for use in a dental treatment device includes a valve body assembly. The valve body assembly has a control channel, an inflow chamber, and an outflow chamber inside. A diaphragm, forming the control chamber with the control channel, is provided on the valve body assembly. The diaphragm is connected to a valve core assembly for controlling the connection between the inflow chamber and the outflow chamber. The valve body assembly is characterized in that at least one of the control chamber, the inflow chamber, and the outflow chamber is connected to a mounting hole. An insert head is provided on the outer side of the valve body assembly, with its insertion end fitting into the mounting hole. A locking position is provided on the insert head, and a locking component is installed on the valve body assembly to secure the insert head to the valve body assembly.

[0007] In this utility model, the mounting component is provided with a mounting hole, which includes an insertion hole and a sliding hole connected in sequence. When the sliding hole moves to the insertion end position of the connector, the portion of the mounting component corresponding to the outer peripheral edge of the sliding hole is engaged in the mounting position.

[0008] In this invention, the insertion end of the connector is provided with a connector sealing groove, and a connector sealing ring for contacting and sealing with the wall of the mounting hole is installed in the connector sealing groove.

[0009] In this utility model, the valve body assembly is provided with a mating slot, and each mating slot corresponds to at least one snap-fit ​​component. The mating slot is provided with a connector clearance opening for avoiding the connector head and a slot insertion opening for inserting the snap-fit ​​component into the mating slot.

[0010] In this invention, the mounting piece is sheet-shaped, and the mounting piece is integrally formed with a bending portion that can be bent and rest on the valve body assembly to restrict the movement of the mounting piece relative to the valve body assembly.

[0011] In this utility model, the connector is a first pipe joint, the insertion end of the first pipe joint is a round shaft, and the locking position is a locking ring groove surrounding the outer periphery of the insertion end of the connector.

[0012] In this utility model, the valve body assembly includes an upper valve body, a main valve body, and a lower valve body connected sequentially from top to bottom; the inflow cavity is disposed on the upper valve body, and the lower end of the inflow cavity penetrates the bottom of the upper valve body to form an inlet; the control channel is disposed on the lower valve body, and the upper end of the control channel penetrates the upper end of the lower valve body to form a control opening; the diaphragm is sandwiched between the main valve body and the lower valve body and is configured to close the control opening;

[0013] The outflow cavity is located on the main valve body and extends through the main valve body from top to bottom. The outflow cavity includes a connecting hole, a main cavity, and a mating groove that connect from top to bottom. The connecting hole corresponds to the inlet, and the mating groove corresponds to the control opening.

[0014] In this invention, the valve core assembly includes a valve core rod, a valve core spring, and a valve core sealing ring. The valve core rod includes a valve stem and a stem head connected sequentially along the axial direction. The end of the stem head located in the outflow cavity and facing away from the valve stem is in movable contact with the diaphragm. The valve core spring is located in the main cavity and is fitted onto the valve stem. One end of the valve core spring presses against the end of the stem head facing away from the diaphragm, and the other end presses against the wall of the main cavity. One end of the valve stem passes through the connecting hole and the inlet to enter the inflow cavity. A valve core sealing groove is provided on the portion of the valve stem located in the inflow cavity. The valve core sealing ring is located in the inflow cavity and is fitted onto the valve core sealing groove.

[0015] In this invention, the valve stem is provided with a connecting annular groove, which surrounds the valve stem. The height of the connecting annular groove is higher than the height of the connecting hole. The connecting annular groove is used to move to the position corresponding to the connecting hole when the inflow cavity and the outflow cavity are connected.

[0016] In this invention, the outflow cavity further includes a flared opening that is axially connected to the inlet end of the connecting hole. The small-diameter end of the flared opening is connected to the connecting hole, and the large-diameter end is connected to the inflow cavity. The outer diameter of the valve core sealing ring is smaller than the large-diameter end of the flared opening.

[0017] The beneficial effects of this utility model are as follows: This utility model uses a snap-fit ​​component to install the connector onto the valve body assembly, which not only enables quick installation of the connector and improves the installation efficiency of the connector, but also eliminates the need for threaded connection to install the connector onto the valve body assembly, avoiding the hassle of using a wrench for fixing and improving the ease of installation. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a diagram showing the bending changes of the bent portion on the valve body assembly.

[0020] Figure 2 This is a cross-sectional view of a pneumatically controlled water diaphragm valve.

[0021] Figure 3 A schematic diagram of the control chamber, inflow chamber, and outflow chamber;

[0022] Figure 4 Exploded view of a pneumatically controlled water diaphragm valve;

[0023] Figure 5 This is an exploded view of the valve body assembly. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0026] Furthermore, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection using welding, a detachable connection using bolts, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] Reference Figure 1-5 A pneumatically controlled water diaphragm valve for use in a dental treatment device includes a valve body assembly. The valve body assembly has a control channel 100, an inflow chamber 200, and an outflow chamber 300 inside. A diaphragm 1, forming a control chamber with the control channel 100, is provided on the valve body assembly. The diaphragm 1 is connected to a valve core assembly for controlling the connection and disconnection between the inflow chamber 200 and the outflow chamber 300. At least one of the control chamber, the inflow chamber 200, and the outflow chamber 300 is connected to a mounting hole 400, which penetrates the outer surface of the valve body assembly. A connector 2, with its insertion end inserted into the mounting hole 400, is provided on the outer side of the valve body assembly. The connector 2 has a locking position 21, and a locking member 3, which locks into the locking position 21 to secure the connector 2 to the valve body assembly, is installed on the valve body assembly. By using the snap-fit ​​component 3 to fasten the connector 2 onto the valve body assembly, not only can the connector 2 be installed quickly and the installation efficiency of the connector 2 be improved, but the connector 2 can also be installed onto the valve body assembly without using a threaded connection, eliminating the trouble of using a wrench for fixing and improving the ease of installation.

[0029] Furthermore, the mounting component 3 is provided with a mounting hole, which includes an insertion hole 31 and a sliding hole 32 connected in sequence. The insertion end of the connector 2 partially passes through the insertion hole 31 and is inserted into the mounting hole 400. When the sliding mounting component 3 moves the sliding hole 32 to the insertion end position of the connector 2, the portion of the mounting component 3 corresponding to the outer peripheral edge of the sliding hole 32 engages in the mounting position 21. In addition, the insertion end of the connector 2 is provided with a connector sealing groove 22, in which a connector sealing ring 20 is installed for contacting and sealing with the hole wall of the mounting hole 400.

[0030] Furthermore, the valve body assembly is provided with mating slots 500, each mating slot 500 corresponding to at least one mounting piece 3. The mating slot 500 is provided with a connector clearance opening for avoiding the connector 2 and a slot insertion opening for inserting the mounting piece 3 into the mating slot 500. The mounting piece 3 is sheet-shaped, and the mounting piece 3 is integrally formed with a bending portion 33 that can be bent and rest on the valve body assembly to limit the movement of the mounting piece relative to the valve body assembly. During installation, insert the retaining piece 3 from the slot into the mating slot 500, and align the insertion hole 31 with the mounting hole 400. Then, insert the connector 2 through the connector clearance opening and the insertion hole 31 in sequence into the mounting hole 400. Next, slide the retaining piece 3 to move the sliding hole 32 to the insertion end position of the connector 2, and let the part of the retaining piece 3 corresponding to the outer periphery of the sliding hole 32 engage in the retaining position 21. Then, bend the bending part 33 so that the bending part 33 hooks onto the valve body assembly to prevent the retaining piece 3 from sliding and causing the sliding hole 32 to disengage from the retaining position 21, thereby completing the retaining and fixing of the connector 2.

[0031] In this embodiment, the connector 2 is a first pipe connector, the insertion end of the first pipe connector is a round shaft, and the locking position 21 is a locking ring groove surrounding the outer periphery of the insertion end of the connector 2, so that the insertion end of the connector 2 does not need to be rotated at a specific assembly angle after being inserted into the mounting hole 400.

[0032] In this embodiment, the valve body assembly includes an upper valve body 4, a main valve body 5, and a lower valve body 6 connected sequentially from top to bottom. The outer periphery of the upper valve body 4, the main valve body 5, and the lower valve body 6 is hexagonal. The upper valve body 4, the main valve body 5, and the lower valve body 6 are assembled and fixed together by bolt connection.

[0033] Furthermore, the inflow cavity 200 is disposed on the upper valve body 4, and the lower end of the inflow cavity 200 penetrates the bottom of the upper valve body 4 to form an inlet; the control channel 100 is disposed on the lower valve body 6, and the upper end of the control channel 100 penetrates the upper end of the lower valve body 6 to form a control opening; the diaphragm 1 is clamped between the main valve body 5 and the lower valve body 6 and is configured to close the control opening.

[0034] Furthermore, the outflow cavity 300 is provided on the main valve body 5 and extends through the main valve body 5 from top to bottom. The outflow cavity 300 includes a connecting hole 301, a main cavity 302, and a mating groove 303 that connect from top to bottom. The connecting hole 301 corresponds to the inlet, and the mating groove 303 corresponds to the control opening.

[0035] Furthermore, the valve core assembly is fitted in the outflow chamber 300 and the inflow chamber 200. The valve core assembly includes a valve core rod 7, a valve core spring 8, and a valve core sealing ring 9. The valve core rod 7 includes a valve stem 71 and a stem head 72 connected sequentially along the axial direction. The end of the stem head 72 located in the outflow chamber 300 and facing away from the valve stem 71 is in movable contact with the diaphragm 1. The valve core spring 8 is located in the main cavity 302 and is fitted onto the valve stem 71. One end of the valve core spring 8 presses against the stem head 72. One end of the valve stem 71 faces away from the diaphragm 1, while the other end presses against the wall of the main cavity 302. One end of the valve stem 71 passes through the connecting hole 301 and the inlet to enter the inflow cavity 200. The valve stem 71 is provided with a valve core sealing groove 74 on the part of the valve stem 71 located in the inflow cavity 200. The valve core sealing ring 9 is located in the inflow cavity 200 and is fitted onto the valve core sealing groove 74. The valve core sealing ring 9 cooperates with the main valve body 5 to disconnect the inflow cavity 200 and the outflow cavity 300.

[0036] In this embodiment, the valve stem 71 is provided with a connecting annular groove 73, which surrounds the valve stem 71. The height of the connecting annular groove 73 is higher than the height of the connecting hole 301. The connecting annular groove 73 is used to move to the position corresponding to the connecting hole 301 when the inflow chamber 200 and the outflow chamber 300 are connected, thereby improving the efficiency of fluid entering the outflow chamber 300 from the inflow chamber 200.

[0037] In this embodiment, the outer periphery of the rod head 72 is provided with a limiting ring 75 for limiting the movement of the valve core rod 7 when it is driven to move by the diaphragm 1. When the limiting ring 75 presses against the groove surface of the mating groove 303 near the main cavity 302, the valve core rod 7 cannot continue to move, thereby preventing the valve core rod 7 from moving excessively.

[0038] In this embodiment, a valve body sealing ring 10 is provided between the upper valve body 4 and the main valve body 5 to prevent fluid from flowing out through the gap between the upper valve body 4 and the main valve body 5, thereby ensuring the quality of the valve body assembly. Furthermore, the upper end of the main valve body 5 has a valve body protrusion 51, and the bottom of the inflow cavity 200 has a valve body groove 201. The valve body protrusion 51 is inserted into the valve body groove 201, and the valve body sealing ring 10 is fitted onto the valve body protrusion 51. The surface of the valve body sealing ring 10 contacts the groove surface of the valve body groove 201 and the valve body protrusion 51, thereby achieving a seal.

[0039] In this embodiment, the outflow cavity 300 further includes a flared opening 304 disposed on the valve body protrusion 51 and axially connected to the inlet end of the connecting hole 301. The small-diameter end of the flared opening 304 is connected to the connecting hole 301, and the large-diameter end is connected to the inflow cavity 200, thereby improving the efficiency of fluid flowing into the outflow cavity 300. Furthermore, the outer diameter of the valve core sealing ring 9 is smaller than the large-diameter end of the flared opening 304, so that when the valve core spring 8 drives the valve core rod 7 to reset, the valve core sealing ring 9 can enter the flared opening 304 and fit against the wall surface of the flared opening 304 to achieve a seal, thereby achieving the disconnection between the inflow cavity 200 and the outflow cavity 300.

[0040] When it is necessary to connect the inflow chamber 200 to the outflow chamber 300, high-pressure gas is input into the control chamber. The diaphragm 1 bulges towards the valve core assembly and pushes the valve core rod 7 away from the control chamber. At this time, the valve core rod 7 simultaneously compresses the valve core spring 8 and drives the valve core sealing ring 9 away from the connecting hole 301, thereby connecting the inflow chamber 200 to the outflow chamber 300, allowing water entering the inflow chamber 200 to enter the outflow chamber 300 and then flow out through the corresponding connector 2 in the outflow chamber 300. When the high-pressure gas in the control chamber is discharged, the valve core spring 8 drives the valve core rod 7 to reset and causes the valve core sealing ring 9 to re-block the connecting hole 301, thereby disconnecting the inflow chamber 200 and the outflow chamber 300.

[0041] In this embodiment, the mating slot 500 and mounting hole 400 are only provided on the main valve body 5, that is, only the outflow cavity 300 is connected to the mounting hole 400; the upper valve body 4 and the lower valve body 6 are provided with mounting screw holes 600, that is, the inflow cavity 200 and the control cavity are connected by mounting screw holes 600, and the second pipe connector 11 is threaded onto the mounting screw holes 600; of course, it is not limited to the above structure. In other embodiments, the mating slot 500 and mounting hole 400 may be provided simultaneously or only on the upper valve body 4 and / or the lower valve body 6, and the specific design can be based on different installation environments.

[0042] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A pneumatically controlled water diaphragm valve for use in a dental treatment device, comprising a valve body assembly, wherein the valve body assembly has a control channel (100), an inflow chamber (200), and an outflow chamber (300) inside, and the valve body assembly has a diaphragm (1) forming the control chamber with the control channel (100), and the diaphragm (1) is connected to a valve core assembly for controlling the opening and closing of the inflow chamber (200) and the outflow chamber (300); characterized in that: At least one of the control chamber, inflow chamber (200) and outflow chamber (300) is connected to a mounting hole (400), and the valve body assembly is provided with a connector (2) whose insertion end is inserted into the mounting hole (400) on the outside; the connector (2) is provided with a snap-fit ​​position (21), and a snap-fit ​​part (3) is installed on the valve body assembly, which snaps into the snap-fit ​​position (21) to snap the connector (2) onto the valve body assembly.

2. A pneumatically controlled water film sheet valve for use in a dental treatment apparatus according to claim 1, characterized in that: The mounting component (3) is provided with mounting holes, which include an insertion hole (31) and a sliding hole (32) connected in sequence. When the sliding hole (32) moves to the insertion end position of the connector (2), the part of the mounting component (3) corresponding to the outer peripheral edge of the sliding hole (32) is inserted into the mounting position (21).

3. A pneumatically controlled water diaphragm valve for a dental treatment device according to claim 1, characterized in that: The connector (2) has a connector sealing groove (22) at the insertion end, and a connector sealing ring (20) is installed in the connector sealing groove (22) for contacting and sealing with the wall of the mounting hole (400).

4. The pneumatically controlled water film patch valve for use in a dental treatment unit according to claim 1, characterized in that: The valve body assembly is provided with a mating slot (500), and each mating slot (500) corresponds to at least one mounting piece (3). The mating slot (500) is provided with a connector clearance opening for avoiding the connector (2) and a slot socket for inserting the mounting piece (3) into the mating slot (500).

5. A pneumatically controlled water film sheet valve for use in a dental treatment apparatus according to any one of claims 1-4, characterized in that: The mounting piece (3) is sheet-shaped, and the mounting piece (3) is integrally formed with a bending portion (33) that can be bent and rest on the valve body assembly to restrict the movement of the mounting piece relative to the valve body assembly.

6. A pneumatically controlled water diaphragm valve for a dental treatment device according to claim 1, characterized in that: The connector (2) is a first pipe connector, the insertion end of the first pipe connector is a round shaft, and the snap-fit ​​position (21) is a snap-fit ​​ring groove surrounding the outer periphery of the insertion end of the connector (2).

7. A pneumatically controlled water film sheet valve for use in a dental treatment apparatus according to claim 1, characterized in that: The valve body assembly includes an upper valve body (4), a main valve body (5), and a lower valve body (6) connected sequentially from top to bottom; the inflow chamber (200) is located on the upper valve body (4), and the lower end of the inflow chamber (200) penetrates the bottom of the upper valve body (4) and forms an inlet; the control channel (100) is located on the lower valve body (6), and the upper end of the control channel (100) penetrates the upper end of the lower valve body (6) and forms a control opening; the diaphragm (1) is sandwiched between the main valve body (5) and the lower valve body (6) and is configured to close the control opening; The outflow cavity (300) is provided on the main valve body (5) and extends through the main valve body (5) from top to bottom. The outflow cavity (300) includes a connecting hole (301), a main cavity (302), and a mating groove (303) that connect from top to bottom. The connecting hole (301) corresponds to the inlet, and the mating groove (303) corresponds to the control opening.

8. A pneumatically controlled water film patch valve for use in a dental treatment unit as defined in claim 7, characterized in that: The valve core assembly includes a valve core rod (7), a valve core spring (8), and a valve core sealing ring (9). The valve core rod (7) includes a valve stem (71) and a rod head (72) connected sequentially along the axial direction. The end of the rod head (72) located in the outflow cavity (300) and facing away from the valve stem (71) is in active contact with the diaphragm (1). The valve core spring (8) is located in the main cavity (302) and is fitted on the valve stem (71). One end of the valve core spring (8) presses against the rod. The head (72) is on one end facing away from the diaphragm (1), and the other end is pressed against the wall of the main cavity (302); one end of the valve stem (71) passes through the connecting hole (301) and the inlet and enters the inflow cavity (200); the valve stem (71) is provided with a valve core sealing groove (74) on the part of the valve stem (71) located in the inflow cavity (200); the valve core sealing ring (9) is located in the inflow cavity (200); and the valve core sealing ring (9) is fitted on the valve core sealing groove (74).

9. A pneumatically controlled water film patch valve for use in a dental treatment unit as defined in claim 8, characterized in that: The valve stem (71) is provided with a connecting annular groove (73), which surrounds the valve stem (71). The height of the connecting annular groove (73) is higher than the height of the connecting hole (301). The connecting annular groove (73) is used to move to the position corresponding to the connecting hole (301) when the inflow cavity (200) and the outflow cavity (300) are connected.

10. A pneumatically controlled water film patch valve for use in a dental treatment unit as defined in claim 8, characterized in that: The outflow cavity (300) also includes a flared mouth (304) axially connected to the inlet end of the connecting hole (301). The small diameter end of the flared mouth (304) is connected to the connecting hole (301), and the large diameter end is connected to the inflow cavity (200). The outer diameter of the valve core sealing ring (9) is smaller than the large diameter end of the flared mouth (304).

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