Planetary transmission assembly on flow valve for combustion engine

Abstract

The utility model discloses a planetary transmission assembly on a flow valve for a combustion engine. The planetary transmission assembly comprises a stepping motor, a magnetic linkage device, a planetary reducer, a lateral connecting seat, a planetary shell, a transmission connecting rod, a small steel ball and a center shaft. The magnetic linkage device comprises an outer magnetic ring wheel and an inner magnetic ring wheel; magnetic fields generated by the first magnetic ring of the outer magnetic ring wheel and the second magnetic ring of the inner magnetic ring wheel correspond to each other in position and are coaxial; the upper part of the planetary reducer is in transmission connection with the inner magnetic ring wheel, and the lower part of the planetary reducer is connected with the transmission connecting rod; the center shaft sequentially penetrates through the inner magnetic ring wheel, the planetary reducer and the transmission connecting rod. The planetary reducer is mounted in the planetary shell; and the small steel balls are arranged in a ball groove of the transmission connecting rod and a steel ball raceway of the lateral connecting seat. The planetary transmission assembly on the flow valve for the combustion engine has the functions of being free of leakage, high in flow adjusting precision, sensitive in adjusting action, free of sparks and the like.

Description

Technical Field

[0001] The utility model relates to a planetary transmission component, in particular to a planetary transmission component on a flow valve for a combustion machine. Background Art

[0002] The flow valve for burners is a valve widely used in the field of gas and oil. It controls the size of the fire by adjusting the flow rate.

[0003] The main actuators of the flow valves for burners on the market are mainly composed of simple servo motors and controllers. Among them, the simple servo motor is mainly composed of a DC motor and an angle sensor with low accuracy. This kind of actuator has the following problems:

[0004] 1. The flow control accuracy is not high, which is not conducive to saving natural gas, diesel and other resources;

[0005] 2. Since the motor is a DC motor, it will generate a large stall current when it reaches the specified limit point. As the number of stalls increases, the power management chip in the controller will burn out. At the same time, since the DC motor is a brushed motor, during the rotation process, the commutator and the carbon brush are always igniting, and the ignition current exceeds 20mA (below 20mA is a safe current). If the natural gas or fuel pipeline leaks gas or liquid, it may cause a fire or explosion.

[0006] The connection structure between the actuator and the valve body of the flow valve is that the DC motor is connected to the ball rod in the valve body through a simple gear reducer. The sealing structure of this connection is a dynamic seal, that is, a sealing ring is inserted into the ball rod and then embedded in the valve body. In order to prevent air leakage or liquid leakage, the seal fit is a tight overfit. This fit mode. Causes the mechanical transmission to wear quickly, which will further cause air leakage or liquid leakage; at the same time, it will further increase the load current generated by the motor operation and reduce the service life of the controller. Utility Model Content

[0007] The utility model aims to overcome the above-mentioned deficiencies of the prior art and provides a planetary transmission assembly on a flow valve for a combustion machine.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A planetary transmission assembly on a flow valve for a burner, characterized in that it includes a stepping motor, a magnetic linkage device, a planetary reducer, a lateral connecting seat, a planetary housing, a transmission connecting rod, a small steel ball, and a central shaft;

[0010] The magnetic linkage device comprises an outer magnetic ring wheel and an inner magnetic ring wheel; the magnetic fields generated by the first magnetic ring of the outer magnetic ring wheel and the second magnetic ring of the inner magnetic ring wheel correspond to each other and are coaxial;

[0011] Wherein, the output shaft of the stepper motor is coaxially connected with the outer magnetic ring wheel;

[0012] Wherein, the inner magnetic ring wheel 3 is transmission-connected to the transmission connecting rod 9 through the planetary reducer;

[0013] Among them, the central axis passes through the inner magnetic ring wheel, the planetary reducer, and the transmission connecting rod in sequence;

[0014] Wherein, the planetary reducer is installed in the planetary housing; the planetary housing is fixed on the lateral connecting seat;

[0015] Among them, the small steel balls are arranged in the ball grooves of the transmission connecting rod and the steel ball raceways of the lateral connecting seat.

[0016] In the planetary transmission assembly on the flow valve for a combustion machine, the planetary reducer includes an inner ring gear, a primary planet carrier, a secondary planet carrier, and planetary gears;

[0017] In the above-mentioned planetary transmission assembly on the flow valve for a burner, the planetary gears are respectively installed on the primary planetary carrier and the secondary planetary carrier; the primary planetary carrier and the secondary planetary carrier are transmission connected to the inner ring gear through the planetary gears; the inner ring gear is fixed on the inner wall of the planetary housing; the driving sun gear of the inner magnetic ring wheel is transmission connected to the primary planetary carrier through the planetary gears, and the secondary connecting port of the secondary planetary carrier is transmission connected to the transmission connecting rod.

[0018] In the planetary transmission assembly on the flow valve for a combustion machine, a first shaft hole matching the central axis is provided at the center of the second magnetic ring, the lower part of the second magnetic ring is connected to the driving sun gear on the same axis, and the first shaft hole penetrates the driving sun gear;

[0019] In the planetary transmission assembly on the flow valve for a combustion machine, a plurality of primary gear shafts matching the planetary gears are provided on the primary planetary disk of the primary planetary carrier, a primary sun hole matching the central axis is provided at the center of the primary planetary disk, a primary sun wheel is provided below the primary planetary disk, the primary sun wheel is coaxial with the primary sun hole, and the primary sun hole passes through the primary sun wheel, and the sun wheel is meshed with the planetary gears of the secondary planetary carrier;

[0020] In the planetary transmission assembly on the flow valve for a combustion machine, a plurality of secondary gear shafts matching the planetary gears are provided on the secondary planetary disc of the secondary planetary carrier, a secondary crotch stop is provided below the secondary planetary disc, and the secondary connection port is provided at the center of the secondary planetary disc and the secondary crotch stop;

[0021] In the planetary transmission assembly on the flow valve for a combustion machine, the inner gear ring includes an inner gear meshing with the planetary gear, and a planetary stop portion is provided above the inner gear.

[0022] In the planetary transmission assembly on the flow valve for a burner, the transmission connecting rod further comprises a guide rod and a connector adapted to the secondary connecting port, and the connector and the bead groove are sequentially arranged on the guide rod;

[0023] In the planetary transmission assembly on the flow valve for a burner, a primary transmission gear is provided on the guide rod;

[0024] In the planetary transmission assembly on the flow valve for a burner, a second shaft hole matching the central axis is provided at the center of the guide rod, and the second shaft hole passes through the connector and the bead groove in sequence.

[0025] In the planetary transmission assembly on the flow valve for a burner, a bead inlet is provided on the side of the connector, and the bead inlet is communicated with the bead groove.

[0026] In the planetary transmission assembly on the flow valve for a burner, the lateral connection seat includes a guide sleeve matching the guide rod, the steel ball raceway is arranged on the guide sleeve, and the outside of the steel ball raceway forms a welding positioning step matching the planetary housing;

[0027] In the planetary transmission assembly on the flow valve for a combustion machine, the outside of the guide sleeve forms an external connection portion.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] The magnetic linkage device adopted by the utility model realizes power transmission through the magnetic field coupling between the inner magnetic ring wheel and the outer magnetic ring wheel. This setting not only realizes full sealing, avoids the leakage of natural gas, fuel oil and other substances, thereby reducing safety hazards; and there is no wear between the components during the transmission process. At the same time, the stepper motor, planetary reducer, primary transmission gear, secondary transmission gear and other power transmission components adopted by the utility model, by increasing the transmission reduction ratio, subdivides each rotation step of the stepper motor into multiple steps, further improves the flow control accuracy, and is conducive to saving natural gas and other resources;

[0030] The utility model adopts a stepping motor, and no electric spark is generated during driving, so as to avoid fire and explosion accidents; at the same time, the running current of the stepping motor is stable, which is beneficial to prolonging the service life of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The utility model is further described with reference to the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the structure of the utility model;

[0033] Figure 2 It is an explosion diagram of the planetary reducer in the utility model;

[0034] Figure 3 It is a structural schematic diagram of the secondary planet carrier in the planetary reducer;

[0035] Figure 4 It is a schematic diagram of the external structure of the transmission connecting rod in the planetary reducer;

[0036] Figure 5 It is a schematic diagram of the internal structure of the transmission connecting rod in the planetary reducer;

[0037] Figure 6 This is a schematic diagram of the structure of the lateral connecting seat in the utility model;

[0038] Figure 7 It is a structural schematic diagram of the planetary housing in the utility model;

[0039] Figure 8 This is a schematic diagram of the structure of the primary planetary carrier in the planetary reducer.

[0040] In the figure,

[0041] 1- Stepper motor;

[0042] 2-External magnetic ring wheel;

[0043] 3-inner magnetic ring wheel, 301-first shaft hole, 302-second magnetic ring, 303-driving sun wheel;

[0044] 4-Central axis;

[0045] 5-inner gear ring, 501-planetary stopper, 502-inner gear;

[0046] 6-Planetary gear;

[0047] 7-primary planet carrier, 701-primary planet disk, 702-primary gear shaft, 703-primary sun hole, 704-primary sun gear;

[0048] 8-secondary planet carrier, 801-secondary planetary disc, 802-secondary gear shaft, 803-secondary connection port, 804-secondary crotch stop;

[0049] 9-transmission connecting rod, 901-connecting head, 902-bead inlet, 903-bead groove, 904-guide rod, 905-primary transmission gear, 906-second shaft hole;

[0050] 10- planetary housing, 1001- reducer inner cavity, 1002- outer magnetic ring cavity, 1003- shaft fixing part;

[0051] 11- lateral connecting seat, 1101- welding positioning step, 1102- steel ball raceway, 1103- guide sleeve, 1104- external connecting part, 1105- first sealing ring groove;

[0052] 12-Small steel balls. DETAILED DESCRIPTION

[0053] The present invention is described in detail below with reference to the accompanying drawings and by means of exemplary embodiments. The following detailed description of the present invention is only for exemplary purposes and is by no means a limitation of the present invention and its application or use.

[0054] Reference Figure 1 , and combined with Figure 2 to Figure 8 As shown, the connection method of the components in the burner flow valve in the utility model is described in detail.

[0055] The planetary transmission assembly of the flow valve for the burner includes a stepper motor 1, a magnetic linkage device, a planetary reducer, a flow regulating device, a lateral connecting seat 11, a planetary housing 10, a transmission connecting rod 9, a small steel ball 12, and a central shaft 4;

[0056] The magnetic linkage device includes an outer magnetic ring wheel 2 and an inner magnetic ring wheel 3; the magnetic fields generated by the first magnetic ring of the outer magnetic ring wheel 2 and the second magnetic ring 302 of the inner magnetic ring wheel 3 correspond to each other and are coaxial;

[0057] Wherein, the output shaft of the stepper motor 1 is coaxially connected with the outer magnetic ring wheel 2;

[0058] The planetary reducer is installed in the planetary housing 10; the planetary housing 10 is sealed on the welding positioning step 1101 of the lateral connecting seat 11 by welding;

[0059] Wherein, the inner magnetic ring wheel 3 is transmission-connected to the transmission connecting rod 9 through the planetary reducer;

[0060] The central shaft 4 passes through the inner magnetic ring wheel 3, the planetary reducer, and the transmission connecting rod 9 in sequence;

[0061] The small steel balls 12 are placed in the ball grooves 903 of the transmission connecting rod 9 and the steel ball raceways 1102 of the lateral connecting seat 11 .

[0062] Through the above-mentioned components and the connection method of the components, the principle of the planetary transmission assembly of the flow valve for the burner of the utility model is further described as follows:

[0063] The stepper motor 1 is driven by an external controller. Each time the controller sends a pulse, the stepper motor 1 is driven to run a step angle. The outer magnetic ring wheel 2, which is coaxially connected to the stepper motor 1, rotates synchronously with the stepper motor 1. At the same time, the inner magnetic ring wheel 2 rotates synchronously with the outer magnetic ring wheel 2 through magnetic linkage, and then the power is transmitted to the transmission connecting rod 9 through the planetary reducer. The transmission connecting rod 9 rotates synchronously with the planetary reducer.

[0064] The rotation angle of the transmission connecting rod = (N×the step angle of the stepping motor 1) / the reduction ratio of the planetary reducer, wherein N is the number of pulses sent by the controller.

[0065] According to the working principle of the planetary transmission assembly of the above-mentioned flow valve for the burner, refer to Figure 1 and Figure 2 As shown, the magnetic linkage device in the utility model is further described as follows:

[0066] The magnetic linkage device of the utility model comprises an outer magnetic ring wheel 2 and an inner magnetic ring wheel 3.

[0067] The magnetic coupling mode between the outer magnetic ring wheel 2 and the inner magnetic ring wheel 3 can be radial magnetic coupling or axial magnetic coupling.

[0068] The radial magnetic coupling means that the N poles and S poles of the outer magnetic ring wheel 2 and the inner magnetic ring wheel 3 are evenly distributed radially on the first magnetic ring and the second magnetic ring 302, and the inner magnetic ring wheel 3 follows the outer magnetic ring wheel 3 to rotate in the same direction by utilizing the force of attraction between opposite magnetic poles. The radial magnetic coupling can also utilize the force of repulsion between like magnetic poles to make the inner magnetic ring wheel 3 follow the outer magnetic ring wheel 3 to rotate synchronously.

[0069] The axial magnetic coupling means that the N poles and S poles of the outer magnetic ring wheel 2 and the inner magnetic ring wheel 3 are evenly distributed axially on the lower end surface of the outer magnetic ring wheel 2 and the upper end surface of the inner magnetic ring wheel 3, and the inner magnetic ring wheel 3 follows the outer magnetic ring wheel 3 to rotate in the same direction by utilizing the force of opposite charges attracting each other or like charges repelling each other.

[0070] In order to increase the transmission efficiency and make the flow rate regulation more sensitive, the radial magnetic coupling method is preferably used in the utility model.

[0071] In order to make the installation of the magnetic linkage device more reasonable and to make the transmission efficiency of the stepper motor 1 better, an outer magnetic ring cavity 1002 is designed on the planetary housing 10. The stepper motor 1 and the outer magnetic ring wheel 2 are coaxially installed in the outer magnetic ring cavity 1002 through the motor installation positioning plate. A shaft fixing part 1003 is provided below the outer magnetic ring cavity 1002 for positioning the central axis 4; the inner magnetic ring wheel 3 is installed on the central axis 4 through the first shaft hole 302, and the gap between the outer wall of the outer magnetic ring cavity 1002 and the inner wall of the first magnetic ring 302 of the inner magnetic ring wheel 3 is controlled to be between 0.05 and 1.0 mm. In order to increase the magnetic coupling force and make the assembly more stable, the gap between the two is controlled to be between 0.1 and 0.3 mm.

[0072] Of course, the outer magnetic ring cavity 1002 can also be eliminated, and the outer magnetic ring wheel 3 can be sleeved on the outer wall of the planetary housing 10. However, this will increase the friction between the outer magnetic ring wheel 3 and the planetary housing 10, further affecting the transmission efficiency and the sensitivity of flow regulation.

[0073] The reason why the utility model adopts the stepper motor 1 is that the stepper motor 1 is a brushless motor, and no electric spark is generated, thus avoiding the occurrence of fire or explosion accidents caused by the exposure of natural gas or fuel. The stepper motor 1 is adopted, and the driving current is stable, which is conducive to improving the service life of the controller.

[0074] According to the working principle of the planetary transmission assembly of the above-mentioned flow valve for the burner, refer to Figure 2 to Figure 5 , Figure 8 Combined with Figure 1 As shown, the planetary reducer in the utility model is further described as follows:

[0075] The planetary reducer in the utility model comprises an inner gear ring 5, a primary planet carrier 7, a secondary planet carrier 8, a plurality of planetary gears 6, a central shaft 4, and a transmission connecting rod 9.

[0076] Wherein, the planetary gears 6 are respectively mounted on the primary gear shaft 702 of the primary planetary carrier 7 and the secondary gear shaft 802 of the secondary planetary carrier 8;

[0077] It is emphasized that in the present invention, the number of primary planet carriers 7 can be multiple, that is, a primary planet carrier 7 can be further arranged below the primary planet carrier 7, and the multiple primary planet carriers 7 are mutually transmission-connected. At the same time, the uppermost primary planet carrier 7 is transmission-connected to the upper part of the inner magnetic ring wheel 3, and the lowermost primary planet carrier 7 is transmission-connected to the secondary planet carrier 8. By arranging multiple primary planet carriers 7, the transmission reduction ratio of the present embodiment is increased;

[0078] Preferably, a first axial hole 301 matching the center is provided at the center of the second magnetic ring 302, the second magnetic ring 302 is connected to the driving sun gear 303 on the same axis, and the first axial hole 301 penetrates the driving sun gear 303;

[0079] Preferably, a primary planetary disk 701 of the primary planetary carrier 7 is provided with a plurality of primary gear shafts 702 matched with the planetary gears 6, a primary sun hole 703 matched with the central axis 4 is provided at the center of the primary planetary disk 701, a primary sun wheel 704 is provided below the primary planetary disk 701, the primary sun wheel 704 is coaxial with the primary sun hole 703, and the primary sun hole 703 runs through the primary sun wheel 704, and the primary sun wheel 704 is meshed with the planetary gears 6 of the secondary planetary carrier 8;

[0080] The primary planet carrier 7 and the secondary planet carrier 8 are connected to the inner gear ring 5 through the planetary gear 6; the inner gear ring 5 is fixed on the inner wall of the planetary cavity 1001 (see the planetary housing for details). Figure 7 ); the driving sun gear 303 of the inner magnetic ring wheel 3 is connected to the primary planet carrier 7 through the planetary gear 6, and the secondary connecting port 803 of the secondary planet carrier 8 is connected to the transmission connecting rod 9.

[0081] Preferably, the inner gear ring 5 includes an inner gear 502 meshing with the planetary gear 6, and a planetary stop 501 is provided above the inner gear 502 to prevent the planetary gear 6 from disengaging from the inner gear 502 during operation of the planetary reducer, thereby avoiding affecting the transmission efficiency.

[0082] According to the technical characteristics of the planetary reducer mentioned above, the output structure of the planetary reducer is further explained. Figure 2 to Figure 6 As shown below:

[0083] First refer to Figure 2 and Figure 3 As shown, the structure of the secondary planet carrier 8 is described in detail as follows:

[0084] The secondary planetary disc 801 of the secondary planetary carrier 8 is provided with a plurality of secondary gear shafts 802 matched with the planetary gears 6, a secondary crotch stop portion 804 is provided below the secondary planetary disc 801, and a secondary connection port 803 is provided at the center of the secondary planetary disc 801 and the secondary crotch stop portion 804. The shape of the secondary connection port 803 can be a tooth shape, a square mouth, a semicircle, a square groove type, a round groove type, etc. In the present utility model, a tooth shape is preferred.

[0085] The action principle of the new planetary reducer in this practical application is further explained as follows:

[0086] When the inner magnetic ring wheel 3 rotates, it drives the sun wheel 303 to rotate synchronously, thereby driving the planetary gear 6 on the primary planetary carrier 7 to rotate. The primary planetary carrier 7 rotates under the interaction between the planetary gear 6 and the internal gear 502. At the same time, the primary sun wheel 704 on the primary planetary carrier 7 drives the planetary gear 6 on the secondary planetary carrier 8 to rotate, and the secondary planetary carrier 8 rotates under the joint action of the planetary gear 6 and the internal gear 502.

[0087] Then refer to Figure 4 and Figure 5 As shown, the transmission connecting rod 9 is further described as follows:

[0088] Preferably, a guide rod 904 and a connector 901 adapted to the secondary connection port 803 are designed on the transmission connection rod 9;

[0089] Preferably, the connector 901 and the bead groove 903 are sequentially arranged on the guide rod 904, and the small steel ball 12 is arranged in the bead groove 903; the bead groove 903 is similar to the inner ring of a ball bearing;

[0090] Preferably, a primary transmission gear 905 is provided on the guide rod 904; the primary transmission gear 905 is the final torque output in the planetary reducer of the present invention.

[0091] Preferably, a second axial hole 906 matching the central axis 4 is provided at the center of the guide rod 904 , and the second axial hole 906 passes through the connector 901 and the bead groove 903 in sequence.

[0092] Preferably, a bead inlet 902 is provided on the side of the connector 901, and the bead inlet 902 is connected to the bead groove 903. In order to prevent the small steel ball 19 from escaping from the bead groove 903 during assembly, the number of the bead inlet 902 is one.

[0093] Finally, in order to install the transmission connecting rod 9 on the lateral connecting seat 11, control the axial clearance and radial direction of the transmission connecting rod 9, and the coaxiality with the lateral connecting seat 11, the structure of the lateral connecting seat 11 is further described, specifically referring to Figure 6:

[0094] Preferably, a guide sleeve 1103 matching the guide rod 904 is provided on the lateral connecting seat 11;

[0095] Preferably, the steel ball raceway 1102 is arranged on the guide sleeve 1103, and the steel ball raceway 1102 is similar to the outer ring of a ball bearing. Therefore, the steel ball raceway 1102, the small steel balls 12, the ball groove 903, and the secondary crotch stop 804 form a ball bearing.

[0096] In order to further ensure the coaxiality of the transmission connecting rod 9 and the guide sleeve 1103, the lead of the guide sleeve 1103 is designed to be a long lead, and the lead distance is ≥3mm; the coaxiality is further guaranteed, so the center shaft 4 installed on the second axial hole 906 of the transmission connecting rod 9 will not be offset, and the center shaft 4 and the second axial hole 906 are matched in a micro-gap fit, and the maximum gap is less than 0.1mm.

[0097] If the fit clearance is small, the center shaft 4 does not need to be welded to the shaft fixing portion 1003. However, in order to increase the transmission efficiency of the planetary reducer and make the output torque more stable, the preferred solution is to weld the center shaft 4 to the shaft fixing portion 1003.

[0098] In order to fix the planetary housing 10 on the lateral connecting seat 11, a welding positioning step 1101 is formed outside the steel ball raceway 1102;

[0099] In order to realize the transmission connection and installation and fixation between the planetary reducer and the flow regulating device, an external connection part 1104 is formed on the outside of the guide sleeve 1103. In the utility model, in order to facilitate installation and disassembly, the external connection part 1104 is designed as a threaded structure. In order to further ensure the sealing effect, a first sealing ring groove 1105 is designed above the external connection part 1104 for installing a matching sealing ring. Of course, the external connection part 1104 can also be fixed to the air intake connection housing 12 by welding or gluing.

[0100] In order to further improve the transmission efficiency and flow regulation of the planetary reducer, the central shaft 4 passes through the first shaft hole 301, one or more primary sun holes 703, and the second shaft hole 906 in sequence.

[0101] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable those skilled in the art to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the essence of the content of the utility model should be included in the protection scope of the utility model.

Claims

1. A planetary transmission assembly on a flow valve for a burner, characterized in that: It comprises a stepping motor (1), a magnetic linkage device, a planetary reducer, a lateral connecting seat (11), a planetary housing (10), a transmission connecting rod (9), a small steel ball (12), and a central shaft (4); The magnetic linkage device comprises an outer magnetic ring wheel (2) and an inner magnetic ring wheel (3); the magnetic fields generated by the first magnetic ring of the outer magnetic ring wheel (2) and the second magnetic ring (302) of the inner magnetic ring wheel (3) are in corresponding positions and are coaxial; The output shaft of the stepper motor (1) is coaxially connected to the outer magnetic ring wheel (2); The inner magnetic ring wheel (3) is transmission-connected to the transmission connecting rod (9) via the planetary reducer; The central shaft (4) passes through the inner magnetic ring wheel (3), the planetary reducer, and the transmission connecting rod (9) in sequence; The planetary reducer is installed in the planetary housing (10); the planetary housing (10) is fixed on the lateral connecting seat (11); The small steel ball (12) is arranged on the transmission connecting rod (9). Bead groove (903) and the steel ball raceway (1102) of the lateral connecting seat (11).

2. The planetary transmission assembly on a flow valve for a combustion machine according to claim 1, characterized in that: The planetary reducer comprises an inner ring gear (5), a primary planet carrier (7), a secondary planet carrier (8), and a plurality of planetary gears (6); The planetary gears (6) are respectively mounted on the primary planetary carrier (7) and the secondary planetary carrier (8); the primary planetary carrier (7) and the secondary planetary carrier (8) are transmission-connected to the inner gear ring (5) via the planetary gears (6); the inner gear ring (5) is fixed to the inner wall of the planetary housing (10); the driving sun gear (303) of the inner magnetic ring wheel (3) is transmission-connected to the primary planetary carrier (7) via the planetary gears (6), and the secondary connecting port (803) of the secondary planetary carrier (8) is transmission-connected to the transmission connecting rod (9).

3. The planetary transmission assembly on a flow valve for a burner according to claim 1, characterized in that: A first axial hole (301) matching the central axis (4) is provided at the center of the second magnetic ring (302); the second magnetic ring (302) is coaxially connected to the driving sun gear (303); and the first axial hole (301) passes through the driving sun gear (303).

4. The planetary transmission assembly on a flow valve for a burner according to claim 2, characterized in that: A primary planetary disc (701) of the primary planetary carrier (7) is provided with a plurality of primary gear shafts (702) matched with the planetary gears (6); a primary sun hole (703) matched with the central axis (4) is provided at the center of the primary planetary disc (701); a primary sun wheel (704) is provided below the primary planetary disc (701); the primary sun wheel (704) is coaxial with the primary sun hole (703), and the primary sun hole (703) passes through the primary sun wheel (704); the primary sun wheel (704) is meshed with the planetary gears (6) of the secondary planetary carrier (8); A plurality of secondary gear shafts (802) matching the planetary gears (6) are provided on the secondary planetary disc (801) of the secondary planetary carrier (8), a secondary crotch stop portion (804) is provided below the secondary planetary disc (801), and the secondary connection port (803) is arranged at the center of the secondary planetary disc (801) and the secondary crotch stop portion (804); The inner gear ring (5) comprises an inner gear (502) meshing with the planetary gear (6), and a planetary stop portion (501) is provided above the inner gear (502).

5. The planetary transmission assembly on a flow valve for a burner according to claim 2, characterized in that: The transmission connecting rod (9) further comprises a guide rod (904), a connecting head (901) adapted to the secondary connecting port (803), and the connecting head (901) and the bead groove (903) are sequentially arranged on the guide rod (904); The guide rod (904) is provided with a primary transmission gear (905); A second axial hole (906) matching the central axis (4) is provided at the center of the guide rod (904), and the second axial hole (906) passes through the connecting head (901) and the bead groove (903) in sequence.

6. The planetary transmission assembly on a flow valve for a burner according to claim 5, characterized in that: A bead inlet (902) is provided on the side of the connector (901), and the bead inlet (902) is communicated with the bead groove (903).

7. The planetary transmission assembly on a flow valve for a burner according to claim 5, characterized in that: The lateral connecting seat (11) comprises a guide sleeve (1103) matching the guide rod (904), the steel ball raceway (1102) is arranged on the guide sleeve (1103), and the outside of the steel ball raceway (1102) forms a welding positioning step (1101) matching the planetary housing (10); The exterior of the guide sleeve (1103) forms an external connection portion (1104).

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