WO2020155787A1

WO2020155787A1 - Double-pump structure of tooth cleaner

Info

Publication number: WO2020155787A1
Application number: PCT/CN2019/119339
Authority: WO
Inventors: 芮菁; 王丽生; 向锐
Original assignee: 南京万畅智能科技有限公司
Priority date: 2019-01-28
Filing date: 2019-11-19
Publication date: 2020-08-06
Also published as: CN109674554A

Abstract

Disclosed is a double-pump structure of a tooth cleaner, the structure comprising a first cylinder body, a second cylinder body, two piston mechanisms, a piston driving crank, a water outlet connecting body, a water outlet mechanism, and a water inlet mechanism, wherein the first cylinder body and the second cylinder body are fixedly mounted side by side; piston heads of the two piston mechanisms are respectively mounted in the first cylinder body and the second cylinder body; shaft sleeves of the two piston mechanisms are mounted on the piston driving crank; cylinder top portions of the first cylinder body and the second cylinder body are each provided with a strip-shaped extension body; a water outlet side cylindrical connector and a water inlet side cylindrical connector are respectively provided on the left and right sides of the strip-shaped extension body; and the water outlet connecting body is mounted between the water outlet mechanism and the two water outlet side cylindrical connectors, the water inlet mechanism is mounted and in communication with the two water inlet side cylindrical connectors, and a one-way valve diaphragm is provided at each docking and mounting position. The double-pump structure can realize water path backflow when blocked or stopped, without affecting the normal operation of a water pump electric motor, and has a large flushing frequency adjustment range.

Description

A double-pump structure used for tooth cleaner

Technical field

The present invention relates to a dental washer assembly, in particular to a double pump structure used for the dental washer.

Background technique

The current dental scalers all change the pulse frequency of the pump by adjusting the motor speed. The pulse frequency has limited changes (the motor speed range is limited); the pressure is directly changed by the pulse frequency, and the pressure adjustment range is limited; the pressure and the pulse frequency are directly related, It cannot be adjusted independently. Pressure adjustment is achieved by adjusting the pulse frequency, that is, the higher the frequency, the higher the pressure, and the lower the frequency, the lower the pressure. But because the motor speed is limited, the pump pulse frequency is limited, and the pressure adjustment range is small. Therefore, it is necessary to design a dual-pump structure for the dental scaler, which can realize the backflow of the water path when it is blocked or suspended, does not affect the normal operation of the water pump motor, and has a larger flushing frequency adjustment range.

Summary of the invention

The purpose of the invention is to provide a double pump structure for a dental scaler, which can realize water return flow when blocked or suspended, does not affect the normal operation of the water pump motor, and has a larger flush frequency adjustment range.

Technical Solution: The dual pump structure for a dental scaler created by the present invention includes a first cylinder, a second cylinder, two piston mechanisms, a piston drive crankshaft, a water outlet connecting body, a water outlet mechanism and a water inlet mechanism; The first cylinder and the second cylinder are fixedly installed side by side; the piston mechanism is composed of a piston rod, a shaft sleeve and a piston head; the shaft sleeve is fixedly arranged on one end of the piston rod, and the piston head is hingedly installed on the other end of the piston rod On; the piston heads of the two piston mechanisms are installed in the first cylinder and the second cylinder respectively; the bushings of the two piston mechanisms are installed on the piston drive crankshaft to drive the two piston heads in the first cylinder and In the second cylinder, there is a sliding movement; the top of the first cylinder and the second cylinder are provided with a bar-shaped extension; on the left and right sides of the bar-shaped extension are respectively provided with a water-side cylindrical connector And a cylindrical connector on the inlet side, and there are water inlet and outlet holes on the corresponding outlet side cylindrical connector and inlet side cylindrical connector on the left and right sides; the inside of the strip extension is provided with a communicating inlet and outlet The water hole to the connecting water hole inside the cylinder; the water outlet connector is installed between the water outlet mechanism and the two outlet side cylindrical connectors, and is used to connect the outlet mechanism and the two outlet side cylindrical connectors, and on the outlet side column There is a water outlet one-way valve film between the water-inlet connector and the water outlet connector; the water inlet mechanism is connected and installed with the two water inlet side cylindrical connectors, and between the water inlet mechanism and the two water inlet side cylindrical connectors With water inlet one-way valve membrane.

Further, the water outlet mechanism includes a water outlet pipe and two water outlet side sleeves arranged on the water outlet pipe; the bottoms of the two water outlet side sleeves are provided with side water outlet holes communicating with the water outlet pipe; the water inlet mechanism includes a water inlet pipe and Two inlet side sleeves arranged on the water inlet pipe; the bottom of the two inlet side sleeves are provided with side water inlet holes communicating with the water inlet pipe; the water outlet connector includes two connecting sleeves arranged side by side; A butting cylindrical connector is provided on the outer side of the bottom of the connecting sleeve; a butting water hole penetrating the butting cylindrical connector is provided at the bottom of the connecting sleeve; two outlet side sleeves are respectively sleeved on two butting cylindrical connections Butt joint is realized on the head; two connecting sleeves are sleeved on the two water outlet side cylindrical connectors to realize the butt joint; two water inlet side sleeves are respectively sleeved on the two water inlet side cylindrical connectors to realize the butt joint.

Furthermore, an overflow cylindrical connector is provided on the outlet pipe, and a return hole communicating with the outlet pipe is provided on the overflow cylindrical connector; a return sleeve is also provided on the inlet pipe, And at the bottom of the water return sleeve is provided with a water distribution hole communicating with the water inlet pipe; the overflow cylindrical connector is inserted in the return water sleeve to achieve docking; a return water check valve is installed in the return water sleeve And the support pressure spring; the return water check valve is blocked on the return water hole under the elastic support of the support pressure spring; a pressure regulating shunt pipe is connected to the water inlet pipe.

Further, the limiting projections are arranged at intervals around the diversion water holes in the return sleeve; the supporting compression spring is arranged in the area surrounded by each limiting projection; the return water check valve is composed of a conical head and a guide rod The guide rod is arranged at the center of the cone bottom surface of the conical head; the supporting compression spring is sleeved on the guide rod; the orifice of the water return hole is arranged as a cone surface corresponding to the cone head.

Further, a water outlet buffer sleeve is provided on the outlet pipe; a limit installation hole is provided at the end of the strip-shaped extension; the outer wall of the two outlet side sleeves are each provided with a water outlet side limit installation side ear; The outer walls of the two inlet side sleeves are each provided with a water inlet side limit installation side ear; the outer walls of the two connecting sleeves are both provided with intermediate limit installation side ears; the screw ends of the limit installation bolts are sequentially Through the outlet side limit installation side ear, the middle limit installation side ear, the limit installation hole and the inlet side limit installation side ear to realize the limit fixed installation; the outer wall of the two outlet side sleeves is jointly provided with a water outlet side opposite pull Support; on the outer walls of the two connecting sleeves are jointly provided with a pair of pull support tube; on the outer walls of the two inlet side sleeves are jointly provided with a water inlet side of the pull support; by the screw bolt The ends pass through the opposite pull support on the water outlet side, the opposite pull support pipe and the opposite pull support on the inlet side in turn to realize the fixed installation of the opposite pull; two limit mounting bolts and one opposite pull bolt are located at the three vertices of the isosceles triangle Location.

Further, the water outlet check valve membrane and the water inlet check valve membrane are check valve membranes of the same structure, and both consist of a circular membrane and a limiting rectangular edge integrally arranged on the peripheral edge of the circular membrane; A C-shaped hole is provided on the upper part to form a circular baffle for closing the water hole in the middle of the circular film, and a connecting blade for tilting and bending is formed between the limiting rectangular edge and the circular baffle; On the bottom of the sleeve of the outlet side, the bottom of the sleeve of the connecting sleeve, and the end surface of the cylindrical connector on the inlet side are provided with a valve diaphragm limit groove adapted to the outer contour shape of the one-way valve diaphragm; Two strip support protrusions are arranged in the limit groove; the one-way valve membrane is installed in the valve membrane limit groove, and the strip support protrusions are supported on the inner surface of the one-way valve membrane.

Further, a backwater sealing ring groove is provided on the outer circumferential wall of the overflow cylindrical connector, and a backwater sealing ring is installed on the backwater sealing ring groove; and the outer circumferential wall of the outlet side cylindrical connector is provided There is an outlet side seal ring groove, and the outlet side seal ring is installed on the outlet side seal ring groove; the inlet side seal ring groove is provided on the outer circumferential wall of the inlet side cylindrical connector, and the inlet side seal ring groove The water inlet side sealing ring is installed on the upper part; the outer circumferential wall of the butting cylindrical connector is provided with a butting end sealing ring groove, and a butting end sealing ring is installed on the butting end sealing ring groove.

Further, the piston-driven crankshaft is composed of a driving gear and a driving stub shaft respectively arranged on both sides of the driving gear; the two driving stub shafts are respectively located at eccentric positions on both sides of the driving gear; two bushings are respectively sleeved on the two driving shafts. On the stub shaft; at the center of the drive gear is provided with a central shaft hole penetrating two drive stub shafts and the drive gear; a central rotating shaft is installed in the central shaft hole.

Further, side wing panels are provided on the left and right sides of the first cylinder block and the second cylinder block; side-by-side butting sleeves are provided on the side wing panels of the first cylinder block; and the side wing panels of the second cylinder block are provided There are side-by-side butt posts; the side-by-side butt posts are provided with screw through holes in the axial direction; screw mounting holes are provided at the bottom of the side-by-side butt sleeves; upper support mounting holes are provided on the strip extension of the second cylinder ; A support pipe is provided below the upper support mounting hole; a lower support mounting hole is provided on the strip-shaped extension of the first cylinder; when the first cylinder and the second cylinder are fixedly installed side by side, they are connected side by side The column is inserted into the side-by-side butt sleeve at the corresponding position, and then the end of the side-by-side mounting screw passes through the screw through hole and then screwed and installed on the screw mounting hole for fixing. The end of the side-by-side mounting bolt passes through the upper side in turn Support mounting holes, support pipes, and lower support mounting holes for fixing.

Further, the piston head includes a cylindrical piston body and a piston sealing ring; the piston sealing ring is arranged around the middle of the cylindrical piston body; a connecting rod mounting hole is provided at the lower end of the cylindrical piston body; the hole wall of the connecting rod mounting hole There is a hinge mounting hole on the upper part; a spherical head is provided at the end of the piston rod; the spherical head extends into the connecting rod mounting hole and is hingedly mounted on the hinge mounting hole through a hinge shaft; at the center of the upper end surface of the cylindrical piston body A protective convex column is formed; a horn-shaped thin-walled cone is provided at the circumferential edge of the upper end surface of the cylindrical piston body.

Compared with the prior art, the creation of the present invention has the beneficial effect of using the setting of the water outlet one-way valve membrane and the water inlet one-way valve membrane to realize that the water pressure when the double pumps work does not affect each other, and ensures that the double pumps are pressurized. Effectiveness; the use of the overflow cylindrical connector, the return sleeve, the return check valve and the support compression spring to form an independent overflow return water flow structure, which can realize the water return flow in the case of blockage or suspension, without affecting the pump The normal operation of the motor and a large adjustment range of flushing frequency.

Description of the drawings

Figure 1 is a schematic diagram of the overall installation structure created by the present invention;

Figure 2 is a schematic diagram of the explosive structure created by the present invention;

Figure 3 is a schematic diagram of the structure of the first cylinder and the second cylinder created by the present invention;

Figure 4 is a schematic diagram of the structure of the water outlet mechanism created by the present invention;

Figure 5 is a schematic diagram of the structure of the water inlet mechanism created by the present invention;

Figure 6 is a schematic diagram of the structure of the water outlet connector created by the present invention;

Figure 7 is a schematic sectional view of the structure of the piston head created by the present invention;

Figure 8 is a schematic diagram of the one-way valve membrane structure created by the present invention.

detailed description

The technical solutions created by the present invention will be described in detail below with reference to the accompanying drawings, but the protection scope created by the present invention is not limited to the embodiments.

Example 1:

As shown in Figures 1-8, the dual pump structure for dental scalers disclosed by the present invention includes: a first cylinder 1, a second cylinder 2, two piston mechanisms, a piston-driven crankshaft, a water outlet connecting body, and a water outlet The first cylinder block 1 and the second cylinder block 2 are fixedly installed side by side, and the cylinder ports of the first cylinder block 1 and the second cylinder block 2 are on the same side; the piston mechanism consists of a piston rod 13 and a sleeve 14 And the piston head composition; the shaft sleeve 14 is fixedly arranged on one end of the piston rod 13, the piston head is hingedly mounted on the other end of the piston rod 13; the piston heads of the two piston mechanisms are respectively mounted on the first cylinder 1 and In the second cylinder 2; the sleeves 14 of the two piston mechanisms are installed on the piston drive crankshaft, which is used to drive the two piston heads to move in the first cylinder 1 and the second cylinder 2; in the first cylinder The cylinder tops of the body 1 and the second cylinder body 2 are each provided with a bar-shaped extension body 63; on the left and right sides of the bar-shaped extension body 63 are respectively provided with a water outlet side cylindrical connector 27 and a water inlet side cylindrical connector There are water inlet and outlet holes 64 through the water outlet side cylindrical connector 27 and the water inlet side cylindrical connector 65 corresponding to the left and right sides; the inside of the strip-shaped extension 63 is provided with communicating water inlet and outlet holes 64 To the connecting water hole inside the cylinder; the water outlet connector is installed between the water outlet mechanism and the two outlet side cylindrical connectors 27 for connecting the outlet mechanism and the two outlet side cylindrical connectors 27, and is located on the outlet side column There is a water outlet one-way valve membrane between the circular connection head 27 and the water outlet connection body; the water inlet mechanism is connected and installed with two water inlet side cylindrical connectors 65, and the water inlet mechanism is connected to the two water inlet side cylindrical connectors There is a water inlet one-way valve membrane between 65.

Further, the water outlet mechanism includes a water outlet pipe 6 and two outlet side sleeves 7 arranged on the outlet pipe 6; the bottoms of the two outlet side sleeves 7 are provided with side water outlet holes 49 communicating with the outlet pipe 6; The water mechanism includes a water inlet pipe 4 and two water inlet side sleeves 10 arranged on the water inlet pipe 4; the bottoms of the two water inlet side sleeves 10 are provided with side water inlet holes 31 communicating with the water inlet pipe 4; The connecting body includes two connecting sleeves 24 arranged side by side; the bottom of the connecting sleeve 24 is provided with a butting cylindrical connector 25; the bottom of the connecting sleeve 24 is provided with a butting water hole 51 penetrating the butting cylindrical connector 25 ; Two outlet side sleeves 7 are sleeved on two butt cylindrical connectors 25 to achieve butt joint; two connecting sleeves 24 are sleeved on two outlet side cylindrical connectors 27 to achieve butt joint; The water-side sleeve 10 is respectively sleeved on two water-inlet side cylindrical connectors 65 to realize butt joint. The use of the water outlet connector can add a one-way isolation structure with a one-way valve membrane on the water outlet side to ensure that the water pressure on the water outlet side will not affect each other.

Further, an overflow cylindrical connector 18 is provided on the outlet pipe 6, and a return hole 43 communicating with the outlet pipe 6 is provided on the overflow cylindrical connector 18; and the inlet pipe 4 is also provided There is a water return sleeve 5, and at the bottom of the water return sleeve 5 there is provided a water distribution hole 29 communicating with the water inlet pipe 4; the overflow cylindrical connector 18 is inserted in the return water sleeve 5 to realize the butt connection; The return water sleeve 5 is equipped with a return water check valve and a support compression spring 22; the return water check valve is blocked on the return water hole 43 under the elastic support of the support compression spring 22; the water inlet pipe 4 is connected with Pressure regulating shunt pipe 17. The overflow cylindrical connector 18, the return sleeve 5, the return water check valve and the support compression spring 22 form an independent overflow return water flow structure, which can realize the water return flow in the case of blockage or suspension, without affecting the pump motor It operates normally and has a large flush frequency adjustment range; the pressure regulating shunt pipe 17 can be connected to the pressure regulating structure to access the pressure regulating and shunt water.

Further, in the return sleeve 5, the limiting protrusions 30 are arranged at intervals around the diverting water holes 29; the supporting compression spring 22 is arranged in the area surrounded by each limiting protrusion 30; the return water check valve is composed of a conical head The guide rod 21 is arranged at the center of the conical bottom surface of the conical head 20; the supporting compression spring 22 is sleeved on the guide rod 21; the orifice of the water return hole 43 is arranged to be with the conical head 20 The corresponding conical surface. The conical head 20 and the conical surface are used to cooperate to achieve sealing. When the waterway is blocked or suspended, the water pressure at the water outlet will increase, which will push the conical head 20 to compress and support the compression spring 22, thereby moving in from the water outlet side. The overflowing and returning water on the water side enters the water inlet pipe 4 again for recycling. At this time, the working frequency of the water pump motor remains unchanged and is always in a normal working state.

Further, one end of the water outlet pipe 6 is sealed, and the other end is connected with a water outlet buffer sleeve 8; on the outer wall of the cylinder mouth of the water outlet buffer sleeve 8 there are two water outlet installation protrusions 46; on the outlet installation protrusion 46 There is a threaded hole 47 for the water outlet for butt installation; one end of the water inlet pipe 4 is sealed, and the outer wall of the other end is provided with a sealing limit groove 9 for installing the nozzle seal ring; on the outer wall of the return sleeve 5 There are two branch installation protrusions 16, and a branch butt joint installation hole is provided on the branch installation protrusion 16; two installation side ears 44 are provided on the outside of the overflow cylindrical connector 18, and the installation side ears 44 are provided Side ear mounting hole; the screw end of the split butt bolt penetrates the split butt mounting hole and the side ear mounting hole and then installs and fixes; the end of the strip-shaped extension 63 is provided with a limit mounting hole 40; on the outer wall of the two outlet side sleeves 7 There is an outlet side limit installation side ear 48 on each of the two water inlet side sleeves 10; a water inlet side limit installation side ear 34 is provided on the outer wall of the two inlet side sleeves 10; There are middle limit mounting side ears 52; the end of the limit mounting bolts penetrates through the outlet side limit mounting side ears 48, the middle limit mounting side ears 52, the limit mounting holes 40, and the inlet side limit mounting side ears 34 to realize the limit. Installed in a fixed position; on the outer walls of the two outlet side sleeves 7 are jointly provided with an outlet side opposite pull support 50; on the outer walls of the two connecting sleeves 24 are jointly provided with a pair of opposite pull support pipe 26; The outer wall of the sleeve 10 on the inlet side is jointly provided with a water inlet side opposing support 33; the screw end of the opposing bolt passes through the outlet side opposing support 50, the opposing support pipe 26, and the water inlet side in sequence. The opposite pulling support 33 realizes opposite pulling fixed installation; two limit mounting bolts and one opposite pulling bolt are located at the three apexes of the isosceles triangle. The use of three-point bolt installation can effectively enhance the stability and structural strength during butt installation and ensure structural stability under conditions of high water pressure.

Further, the water outlet check valve membrane and the water inlet check valve membrane are check valve membranes of the same structure, and both consist of a circular membrane 53 and a limiting rectangular edge 54 integrally provided on the circumferential edge of the circular membrane 53; The circular film 53 is provided with a C-shaped hole, so that a circular baffle 55 for closing the water hole is formed in the middle of the circular film 53, and a circular baffle 55 is formed between the limiting rectangular edge 54 and the circular baffle 55. A bent connecting piece 56; the bottom of the outlet side sleeve 7, the bottom of the connecting sleeve 24, and the end surface of the inlet side cylindrical connector 65 are provided with a one-way valve membrane outer contour shape Corresponding valve diaphragm limit groove 36; two strip support protrusions 37 are provided in the valve diaphragm limit groove 36; one-way valve diaphragm is installed in the valve diaphragm limit groove 36, and the strip support protrusion 37 supports On the inner side of the one-way valve membrane. The use of the one-way valve membrane is small in structure, easy to install, and can effectively control the overall structure size of the double pump; the use of the strip-shaped support bump 37 can support the one-way valve membrane, so that the one-way valve membrane and the water hole of the water flow Isolate, but does not affect the water outlet from the water hole.

Further, a return water sealing ring groove 45 is provided on the outer circumferential wall of the overflow cylindrical connector 18, and a return water sealing ring is installed on the return water sealing ring groove 45; outside the cylindrical connector 27 on the outlet side The circumferential wall is provided with an outlet side sealing ring groove, and an outlet side sealing ring is installed on the outlet side sealing ring groove; an inlet side sealing ring groove is provided on the outer circumferential wall of the inlet side cylindrical connector 65. A water-inlet sealing ring is installed on the water side sealing ring groove; a butting end sealing ring groove 15 is provided on the outer circumferential wall of the butting cylindrical connector 25, and a butting end sealing ring is installed on the butting end sealing ring groove 15. Use the backwater sealing ring, the water outlet side sealing ring, the water inlet side sealing ring and the butting end sealing ring to seal at each docking position to effectively prevent water leakage.

Further, the piston drive crankshaft is composed of a drive gear 3 and a drive stub shaft 23 respectively arranged on both sides of the drive gear 3; two drive stub shafts 23 are respectively located at eccentric positions on both sides of the drive gear 3, and two drive stub shafts The connecting line of the axis line 23 on the side of the driving gear 3 passes through the center of the driving gear 3, or the axis lines of the two driving stub shafts 23 coincide; the two sleeves 14 are respectively sleeved on the two driving stub shafts 23 On; at the center of the drive gear 3 is provided with a central shaft hole 35 penetrating through the two short drive shafts 23 and the drive gear 3; a central shaft 39 is installed in the central shaft hole 35. The two piston heads can be driven separately by the arrangement of two driving stub shafts 23. If the axis lines of the two driving stub shafts 23 coincide, it is a synchronous crank piston drive. If the two driving stub shafts 23 are driven If the center line is symmetrically set at the center of the circle, it is driven by an asynchronous curved rod piston, which can be selected and installed according to design requirements.

Further, side wing plates 11 are provided on the left and right sides of the first cylinder block 1 and the second cylinder block 2; the side wing plates 11 are provided with stiffener plates 41 for fixing to the cylinder block; in the first cylinder The side wing plate 11 of the body 1 is provided with a side-by-side docking sleeve 12; the side wing plate 11 of the second cylinder block 2 is provided with a side-by-side docking post 19; the side-by-side docking post 19 is axially penetrated with a screw through hole 42; The bottom of the side-by-side butting sleeve 12 is provided with screw mounting holes; the bar-shaped extension 63 of the second cylinder 2 is provided with an upper support mounting hole; below the upper support mounting hole is provided a support pipe 38; The bar-shaped extension 63 of a cylinder block 1 is provided with a lower support mounting hole 32; when the first cylinder block 1 and the second cylinder block 2 are fixedly installed side by side, the side-by-side docking post 19 is inserted into the side-by-side docking sleeve at the corresponding position 12, the end of the side-by-side mounting screw passes through the screw through hole 42 and then screwed and installed on the screw mounting hole for fixing. The end of the screw of the side-by-side mounting bolt passes through the upper support mounting hole, support tube 38 and The lower side supports the mounting hole 32 for fixing. The use of the side-by-side docking sleeve 12 and the side-by-side docking post 19 can enhance the stability of the side-by-side installation of the first cylinder block 1 and the second cylinder block 2; the use of the support tube 38 can enhance the installation stability of the upper and lower strip extensions 63 .

Further, the piston head includes a cylindrical piston body 57 and a piston sealing ring 60; the piston sealing ring 60 is arranged around the middle of the cylindrical piston body 57; a connecting rod mounting hole 61 is provided at the lower end of the cylindrical piston body 57; A hinge mounting hole 62 is provided on the wall of the rod mounting hole 61; a spherical head 28 is provided at the end of the piston rod 13; the spherical head 28 extends into the connecting rod mounting hole 61 and is hingedly mounted in the hinge mounting hole through a hinge shaft 62 on; at the center of the upper end surface of the cylindrical piston body 57 is formed a protective protrusion 59; at the circumferential edge of the upper end surface of the cylindrical piston body 57 is provided with a flared thin-walled cone 58; the upper side of the thin-walled cone 58 The outer edge of the bell mouth is close to the inner wall of the cylinder. When the thin-walled cone 58 is used for stroke work, the cylinder mouth is slightly expanded due to the impact of water pressure, which achieves a better sealing effect, and can withstand strong water pressure impact; the use of the piston seal 60 can achieve a second level of sealing , To ensure that there is no leakage.

When the double pump structure used for the dental scaler disclosed by the present invention is used, the setting of the water outlet one-way valve membrane and the water inlet one-way valve membrane can realize that the water pressure of the double pumps does not affect each other and ensures that the double pumps Effectiveness during pressurization; the overflow cylindrical connector 18, the return sleeve 5, the return water check valve and the support compression spring 22 form an independent overflow return water flow structure, which can be realized when it is blocked or suspended The backflow of the water circuit does not affect the normal operation of the water pump motor, and has a large adjustment range of the flushing frequency; using the first cylinder block, the second cylinder block and two piston mechanisms to achieve two sets of independent water supply, if two short drive shafts 23 If the axis lines of the two pumps coincide, the double pump is a synchronous crank-piston structure to achieve a boost effect. Due to a separate overflow and shunt structure, a wider pressure regulation range can be achieved, and the frequency and pressure adjustments are relatively independent. Therefore It can realize the combined output of multiple frequency and pressure modes; if the line connecting the axis lines of the two driving stub shafts 23 on the side of the driving gear 3 passes through the center of the driving gear 3, the double pump is an asynchronous crank piston structure, which realizes Multiplying frequency and boosting effect, the frequency adjustment is twice that of a single pump. Because of the separate overflow and shunt structure, a wider frequency modulation range can be achieved. The frequency and voltage adjustments are relatively independently adjusted, so more frequencies and voltages can be achieved. Combined output of pressure mode.

As mentioned above, although the invention has been expressed and described with reference to the specific preferred embodiments, it should not be construed as a limitation on the invention itself. Various changes can be made in form and details without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

A dual pump structure for a dental scaler, which is characterized in that it includes a first cylinder (1), a second cylinder (2), two piston mechanisms, a piston drive crankshaft, a water outlet connection body, a water outlet mechanism and an inlet Water mechanism; the first cylinder (1) and the second cylinder (2) are fixedly installed side by side; the piston mechanism is composed of a piston rod (13), a shaft sleeve (14) and a piston head; the shaft sleeve (14) is fixed on the piston On one end of the rod (13), the piston head is hingedly mounted on the other end of the piston rod (13); the piston heads of the two piston mechanisms are respectively mounted on the first cylinder (1) and the second cylinder (2) ); the bushings (14) of the two piston mechanisms are installed on the piston drive crankshaft to drive the two piston heads to move in the first cylinder (1) and the second cylinder (2); in the first One cylinder (1) and the second cylinder (2) are provided with a bar-shaped extension (63) on the top of the cylinder; on the left and right sides of the bar-shaped extension (63) are respectively provided with a water outlet side cylindrical connection Head (27) and a water-inlet cylindrical connector (65), and the corresponding water-outlet side cylindrical connectors (27) and water-inlet cylindrical connectors (65) on the left and right sides are provided with water inlet and outlet Hole (64); Inside the strip-shaped extension body (63) is provided with a connecting water hole connecting the water inlet and outlet holes (64) to the inside of the cylinder; the water outlet connector is installed on the water outlet mechanism and the two water outlet side cylindrical connectors ( 27) is used to connect the water outlet mechanism with the two outlet side cylindrical connectors (27), and a water outlet one-way valve membrane is provided between the outlet side cylindrical connector (27) and the water outlet connector; The mechanism is connected and installed with two water inlet side cylindrical connectors (65), and a water inlet one-way valve film is arranged between the water inlet mechanism and the two water inlet side cylindrical connectors (65).
The dual pump structure for dental scaler according to claim 1, characterized in that: the water outlet mechanism comprises a water outlet pipe (6) and two outlet side sleeves (7) arranged on the water outlet pipe (6); The bottoms of the two outlet side sleeves (7) are provided with side water outlet holes (49) communicating with the outlet pipe (6); the water inlet mechanism includes a water inlet pipe (4) and two water inlet pipes (4). The inlet side sleeve (10); the bottom of the two inlet side sleeves (10) are provided with side water inlet holes (31) communicating with the water inlet pipe (4); the water outlet connecting body includes two side-by-side Connecting sleeve (24); on the outside of the bottom of the connecting sleeve (24) is provided with a butting cylindrical connector (25); on the bottom of the connecting sleeve (24) is provided with butting water penetrating the butting cylindrical connector (25) Hole (51); two outlet side sleeves (7) are respectively sleeved on two butt cylindrical connectors (25) to realize butt joint; two connecting sleeves (24) are sleeved on the two outlet side cylindrical connectors Butt joint is realized on the connection head (27); two water inlet side sleeves (10) are respectively sleeved on the two water inlet side cylindrical joint heads (65) to realize butt joint.
The double pump structure for dental scaler according to claim 2, characterized in that: the outlet pipe (6) is also provided with an overflow cylindrical connector (18), and the overflow cylindrical connector ( 18) is provided with a water return hole (43) communicating with the water outlet pipe (6); a water return sleeve (5) is also provided on the water inlet pipe (4), and at the bottom of the water return sleeve (5) It is provided with a water distribution hole (29) communicating with the water inlet pipe (4); the overflow cylindrical connector (18) is inserted in the return water sleeve (5) to realize the butt connection; in the return water sleeve (5) A backwater check valve and a supporting compression spring (22) are installed; the backwater check valve is blocked on the backwater hole (43) under the elastic support of the supporting compression spring (22); connected to the water inlet pipe (4) A pressure regulating shunt pipe (17) is provided.
The dual-pump structure for dental scalers according to claim 3, characterized in that: in the return sleeve (5), the limiting protrusions (30) are arranged at intervals around the diversion water holes (29); The spring (22) is arranged in the area surrounded by each limit projection (30); the return water check valve is composed of a conical head (20) and a guide rod (21); the guide rod (21) is arranged on the conical head At the center of the cone bottom surface of (20); the supporting compression spring (22) is sleeved on the guide rod (21); the orifice of the water return hole (43) is set as a cone surface corresponding to the cone head (20).
The double pump structure for dental scaler according to claim 3, characterized in that: a water outlet buffer sleeve (8) is provided on the outlet pipe (6); the end of the strip-shaped extension body (63) is provided Limited installation holes (40); on the outer walls of the two outlet side sleeves (7) are provided with an outlet side limit installation side ear (48); both on the outer walls of the two inlet side sleeves (10) It is provided with a side lug (34) on the water inlet side; on the outer walls of the two connecting sleeves (24) are provided with a side lug (52) for the middle limit installation; the screw end of the limit mounting bolt penetrates the water outlet in turn The side limit installation side ear (48), the middle limit installation side ear (52), the limit installation hole (40) and the inlet side limit installation side ear (34) realize the limit fixed installation; the two outlet side sleeves ( 7) The outer wall of the water outlet side is provided with a pair of pull support (50); the outer walls of the two connecting sleeves (24) are jointly provided with a pair of pull support pipe (26); on the two inlet side sleeves The outer wall of the cylinder (10) is jointly provided with a water inlet side opposite pull support (33); the screw end of the opposite pull bolt passes through the water outlet side opposite pull support (50) and the opposite pull support tube (26) in turn And the opposite pulling support (33) on the water inlet side realizes opposite pulling fixed installation; two limit mounting bolts and one opposite pulling bolt are located at the three apexes of the isosceles triangle.
The double pump structure for dental scaler according to claim 2, characterized in that: the one-way valve membrane of the water outlet and the one-way valve membrane of the water inlet are of the same structure, and both are made of circular membranes (53) And integrally arranged on the circumferential edge of the circular film (53) to form a limiting rectangular edge (54); the circular film (53) is provided with a C-shaped hole, so that the center of the circular film (53) is formed for A circular baffle (55) that closes the water hole, and a connecting blade (56) for bending and bending is formed between the limiting rectangular edge (54) and the circular baffle (55); the sleeve on the outlet side (7) The bottom of the cylinder, the bottom of the connecting sleeve (24), and the end surface of the cylindrical connector (65) on the inlet side are provided with a valve diaphragm limit groove that is compatible with the outer contour shape of the one-way valve diaphragm. (36); Two strip support protrusions (37) are provided in the valve diaphragm limit groove (36); the one-way valve diaphragm is installed in the valve diaphragm limit groove (36), and the strip support protrusions (37) ) Supported on the inner side of the one-way valve membrane.
The dual pump structure for dental scalers according to claim 2, characterized in that: a return water sealing ring groove (45) is provided on the outer circumferential wall of the overflow cylindrical connector (18), and the return water The sealing ring groove (45) is equipped with a return water sealing ring; the outer circumferential wall of the outlet side cylindrical connector (27) is provided with a water side sealing ring groove, and a water side sealing ring is installed on the water side sealing ring groove ; The outer circumferential wall of the inlet side cylindrical connector (65) is provided with a water inlet side sealing ring groove, and the water inlet side sealing ring is installed on the water inlet side sealing ring groove; but the cylindrical connector (25) A butting end sealing ring groove (15) is arranged on the outer circumferential wall of the butting end, and a butting end sealing ring is installed on the butting end sealing ring groove (15).
The dual pump structure for dental scalers according to claim 1, characterized in that the piston drive crankshaft is composed of a drive gear (3) and a drive stub shaft (23) respectively arranged on both sides of the drive gear (3); The two driving stub shafts (23) are respectively located at the eccentric positions of the two sides of the driving gear (3); the two bushings (14) are respectively sleeved on the two driving stub shafts (23); in the driving gear (3) A central shaft hole (35) penetrating through two driving stub shafts (23) and a driving gear (3) is provided in the center; a central rotating shaft (39) is installed in the central shaft hole (35).
The double pump structure for dental scaler according to claim 1, characterized in that: side wings (11) are provided on the left and right sides of the first cylinder (1) and the second cylinder (2) Side-by-side docking sleeves (12) are provided on the side wing plate (11) of the first cylinder (1); side-by-side docking posts (19) are provided on the side wing plate (11) of the second cylinder (2); A screw through hole (42) is axially penetrated on the side-by-side butting column (19); a screw mounting hole is provided at the bottom of the side-by-side butting sleeve (12); the bar-shaped extension (2) of the second cylinder (2) 63) is provided with an upper support installation hole; below the upper support installation hole is provided with a support pipe (38); the first cylinder (1) is provided with a lower support installation on the strip extension (63) Hole (32); when the first cylinder block (1) and the second cylinder block (2) are fixedly installed side by side, the side-by-side docking column (19) is inserted into the side-by-side docking sleeve (12) at the corresponding position, and then installed side by side The end of the screw passes through the screw through hole (42) and is screwed and installed on the screw mounting hole for fixing. The screw end of the side-by-side mounting bolt passes through the upper support mounting hole, the support tube (38) and the lower support in turn The mounting hole (32) is used for fixing.
The dual pump structure for dental scalers according to claim 1, characterized in that: the piston head includes a cylindrical piston body (57) and a piston sealing ring (60); the piston sealing ring (60) is arranged around the cylindrical The middle part of the piston body (57); the lower end of the cylindrical piston body (57) is provided with a connecting rod mounting hole (61); the connecting rod mounting hole (61) is provided with a hinge mounting hole (62); The end of the piston rod (13) is provided with a spherical head (28); the spherical head (28) extends into the connecting rod mounting hole (61) and is hingedly mounted on the hinge mounting hole (62) through a hinge shaft; A protective protrusion (59) is formed at the center of the upper end surface of the piston body (57); a horn-shaped thin-walled cone (58) is provided at the circumferential edge of the upper end surface of the cylindrical piston body (57).