Electrical control device of double-screw feeder for powder and particle material transportation tank truck

Abstract

The utility model discloses an electrical control device of a double-screw feeder for a powder and particle material transportation tank truck. The main screw feeder motor (1) is used as an outer material section of the double-screw feeder; the auxiliary screw feeder motor (2) is used as an inner material section of the double-screw feeder; the frequency converter group is arranged on the main screw feeder motor (1) and the auxiliary screw feeder motor (2); the two-way relay (7) is arranged on the frequency converter group; the double-screw feeder for the powder and particle material transportation tank truck is formed in a two-section mode through the main screw feeder motor (1) and the auxiliary screw feeder motor (2), the main screw feeder motor (1) and the auxiliary screw feeder motor (2) are controlled to be started and stopped through the frequency converter set, and the main screw feeder motor (1) and the auxiliary screw feeder motor (2) are controlled to be started and stopped through the two-way relay (7). Control signals between the frequency converter sets are in a time difference state, the operation starting state and the operation stopping state of the double-screw feeder are asynchronous, and the technical problem that an operator carries out manual step-by-step operation on the main screw feeder and the auxiliary screw feeder is solved. Therefore, the operation optimization performance of the double-screw feeder is improved.

Description

Technical Field

[0001] The utility model relates to an electrical control device for a double-screw feeder, in particular to an electrical control device for a double-screw feeder used in a powder and particle material transport tank truck. Background Art

[0002] The powder and granular material transport vehicle is composed of a special automobile chassis, a bulk cement truck tank body, an air pipeline system, an automatic unloading device and other parts. It is suitable for bulk transportation of dry powder materials with a particle diameter not greater than 0.1mm, such as fly ash, cement, lime powder, ore powder, granular alkali, etc. In order to meet the long-distance loading and unloading of powder and granular materials, a main screw feeder and an auxiliary screw feeder are generally used for docking and conveying. Therefore, the electrical control device of the double screw feeder for the powder and granular material transport tanker is an important automobile component. Among the existing double screw feeder electrical control devices for powder and granular material transport tankers, there is no double screw feeder electrical control device for the powder and granular material transport tanker. In order to prevent blockage or accumulation of materials during the powder and granular material transportation process, the auxiliary screw feeder is started first before the main screw feeder, and the main screw feeder is stopped first before the auxiliary screw feeder. The operator also performs manual step-by-step operation of the main screw feeder and the auxiliary screw feeder, which affects the operational optimization performance of the double screw feeder.

[0003] The utility model makes the start and stop states of the double screw feeder asynchronous, and effectively explores and studies the technical problem of the operator manually operating the main screw feeder and the auxiliary screw feeder in steps.

[0004] The statements here only provide background technology related to the present utility model and do not necessarily constitute prior art. The application technical solution of the present invention is made based on the technical briefing document provided by the applicant on September 18, 2024, which solves actual technical problems in the work process, and the existing technical problems, technical features and technical effects in the similar patent documents and background technology obtained through retrieval. Summary of the Invention

[0005] The object of the utility model is an electrical control device for a double-screw feeder of a powder and granular material transport tank truck.

[0006] In order to overcome the above technical shortcomings, the purpose of the utility model is to provide an electrical control device for a double screw feeder of a powder and granular material transport tank truck, thereby improving the operation optimization performance of the double screw feeder.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: it includes a main screw feeder motor used as the outer material section of the double screw feeder, an auxiliary screw feeder motor used as the inner material section of the double screw feeder, an inverter group arranged on the main screw feeder motor and the auxiliary screw feeder motor, and a dual-circuit relay arranged on the inverter group.

[0008] The technical effect of the above technical solution is that by setting the start and stop delay time of the main and auxiliary screw motors, the start and stop can be started and stopped with one button of the remote control, which not only simplifies the operation process, improves electrical safety, but also ensures a smooth unloading process. It constitutes the basic technical solution of the utility model and solves the technical problem of the utility model.

[0009] Due to the design of the main screw feeder motor, the auxiliary screw feeder motor, the frequency converter group and the dual-channel relay, the main screw feeder motor and the auxiliary screw feeder motor are used to realize a two-stage composition of the twin screw feeder for the powder and granular material transport tank truck. The frequency converter group is used to realize start and stop control of the main screw feeder motor and the auxiliary screw feeder motor. The dual-channel relay is used to realize a time difference state of the control signals between the frequency converter groups, and the operation start and stop state of the twin screw feeder is realized in asynchronous state, which solves the technical problem of manual step-by-step operation of the main screw feeder and the auxiliary screw feeder by the operators, thereby improving the operation optimization performance of the twin screw feeder.

[0010] The utility model is designed to interconnect a main screw feeder motor, a secondary screw feeder motor, a frequency converter group and a dual-circuit relay in a manner that the start and stop states of the double screw feeder are asynchronous.

[0011] The utility model is designed to connect a dual-path relay with a main screw feeder motor, a secondary screw feeder motor and a frequency converter group in a manner that a control signal is in a time difference state.

[0012] The utility model is designed that the frequency converter group is configured to include a first frequency converter and a second frequency converter.

[0013] The technical effects of the above five technical solutions are: highlighting the technical feature of making the start and stop states of the double-screw feeder asynchronous, and introducing the application in the technical field of electrical control devices for double-screw feeders used in powder and granular material transport tank trucks.

[0014] The utility model is designed to further include a first accessory device, and the first accessory device is arranged on the frequency converter group, and the first accessory device is arranged as an air switch.

[0015] The utility model is designed to further include a second accessory device, and the second accessory device is arranged in the frequency converter group, and the second accessory device is arranged as a panel double switch.

[0016] The utility model is designed to further include a third accessory device, and the third accessory device is arranged on the dual-circuit relay, and the third accessory device is arranged as a wireless remote controller.

[0017] The technical effects of the above three technical solutions are: realizing the integrated installation of other components and expanding the technical effects of the present utility model.

[0018] The utility model is designed to provide an air switch on the first frequency converter and the second frequency converter, a main screw feeder motor on the first frequency converter and an auxiliary screw feeder motor on the second frequency converter, a panel double switch and a dual-circuit relay between the first frequency converter and the second frequency converter, and a wireless remote control on the dual-circuit relay.

[0019] The technical effect of the above technical scheme is that the main screw feeder motor, the auxiliary screw feeder motor, the first inverter, the second inverter, the air switch, the panel double switch, the dual-channel relay and the wireless remote control constitute the basic technical scheme of the utility model, which solves the technical problem of the utility model.

[0020] The utility model is designed that the main screw feeder motor is arranged as a driving motor and the power supply interface of the main screw feeder motor is arranged to be connected to the output port of the first frequency converter.

[0021] The utility model is designed that the auxiliary screw feeder motor is arranged as a driving motor and the power supply interface of the auxiliary screw feeder motor is arranged to be connected with the output port of the second frequency converter.

[0022] The technical effect of the above two technical solutions is that a double-segment combination of the spiral feeder is achieved.

[0023] The utility model is designed in which one pair of control conversion interfaces of the dual-circuit relay is configured to be connected to the first frequency converter and another pair of control conversion interfaces of the panel double switches is configured to be connected to the second frequency converter, and the control interface of the dual-circuit relay is configured to be connected to the wireless remote controller.

[0024] The technical effect of the above technical solution is that signal control is achieved in an intermediate relay manner.

[0025] The utility model is designed to provide an interface S1-A, an interface COM-A and an interface S2-A in the first frequency converter, and the input interface of the first frequency converter is configured to be connected to the output interface of the air switch, the output interface of the first frequency converter is configured to be connected to the output interface of the main screw feeder motor, the interface S1-A and the interface COM-A are respectively configured to be connected to the dual-circuit relay, and the interface COM-A and the interface S2-A are respectively configured to be connected to the panel double switch.

[0026] The utility model is designed to provide an interface S1-B, an interface COM-B and an interface S2-B in the second frequency converter, and the input interface of the second frequency converter is configured to be connected to the output interface of the air switch, the output interface of the second frequency converter is configured to be connected to the output interface of the auxiliary screw feeder motor, the interface S1-B and the interface COM-B are respectively configured to be connected to the dual-circuit relay, and the interface COM-B and the interface S2-B are respectively configured to be connected to the panel double switch.

[0027] The technical effect of the above two technical solutions is that the main screw feeder motor and the auxiliary screw feeder motor can be controlled separately.

[0028] The utility model is designed that the output interface of the air switch is respectively arranged to be connected to the first frequency converter and the second frequency converter, and the input interface of the air switch is arranged to be connected to the external power supply cable.

[0029] The technical effect of the above technical solution is that: the external power supply connection and disconnection control of the first inverter and the second inverter is realized.

[0030] The utility model is designed that one pair of on-off interfaces of the panel double switch is arranged to be connected to the first frequency converter, and the other pair of on-off interfaces of the panel double switch is arranged to be connected to the second frequency converter.

[0031] The technical effect of the above technical solution is to realize the control of the on-off of the internal interfaces of the first frequency converter and the second frequency converter.

[0032] The utility model is designed that the wireless remote controller is arranged as a radio remote controller and the output port of the wireless remote controller is arranged to be connected with a dual-path relay for receiving.

[0033] The technical effect of the above technical solution is that it realizes the control of the working state of the dual-circuit relay.

[0034] The utility model is designed in which the main screw feeder motor and the auxiliary screw feeder motor are arranged to be distributed in a delayed control manner with the first frequency converter, the second frequency converter, the air switch, the panel double switch and the two-way relay, and the main screw feeder motor, the auxiliary screw feeder motor, the first frequency converter, the second frequency converter, the air switch, the panel double switch and the two-way relay are arranged to be distributed in a remote control manner with the wireless remote controller, one pair of on-off interfaces of the panel double switch are arranged to be connected to the interface COM-A and the interface S2-A respectively, one pair of control conversion interfaces of the two-way relay are arranged to be connected to the interface S1-A and the interface COM-A respectively, another pair of on-off interfaces of the panel double switch are arranged to be connected to the interface COM-B and the interface S2-B respectively, and another pair of control conversion interfaces of the two-way relay are arranged to be connected to the interface S1-B and the interface COM-B respectively.

[0035] In this technical solution, the operation start and stop states of the double-screw feeder are made asynchronous by a dual-circuit relay.

[0036] In this technical solution, the main screw feeder motor, auxiliary screw feeder motor, inverter group and dual-circuit relay that make the start and stop states of the double screw feeder asynchronous are important technical features. In the technical field of electrical control devices for double screw feeders used in powder and granular material transport tankers, it has novelty, creativity and practicality. The terms in this technical solution can be explained and understood using patent documents in this technical field. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 This is a schematic diagram of the utility model.

[0039] Main screw feeder motor-1, auxiliary screw feeder motor-2, first inverter-3, second inverter-4, air switch-5, panel double switch-6, dual-circuit relay-7, wireless remote control-8. DETAILED DESCRIPTION

[0040] According to the Examination Guidelines, terms such as “having”, “including” and “comprising” used in the present invention should be understood as not precluding the existence or addition of one or more other elements or their combinations.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following examples are commercially available. If the processing conditions are not clearly stated, please refer to the purchased product manual or follow the conventional methods in the field.

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] Figure 1 This is one of the first embodiments of the present utility model. This embodiment is described in detail with reference to the accompanying drawings. It includes a main screw feeder motor 1, an auxiliary screw feeder motor 2, a first frequency converter 3, a second frequency converter 4, an air switch 5, a panel double switch 6, a two-way relay 7 and a wireless remote control 8. The air switch 5 is provided on the first frequency converter 3 and the second frequency converter 4, the main screw feeder motor 1 is provided on the first frequency converter 3 and the auxiliary screw feeder motor 2 is provided on the second frequency converter 4, a panel double switch 6 and a two-way relay 7 are provided between the first frequency converter 3 and the second frequency converter 4, and a wireless remote control 8 is provided on the two-way relay 7.

[0046] The second embodiment of the present invention is described in detail with reference to the accompanying drawings.

[0047] In this embodiment, the main screw feeder motor 1 is configured as a driving motor and a power interface of the main screw feeder motor 1 is configured to be connected to an output port of the first frequency converter 3 .

[0048] The main screw feeder motor 1 forms a support connection point for the first frequency converter 3, and the main screw feeder motor 1 realizes the connection with the first frequency converter 3. Its technical purpose is to serve as a component for conveying power to the main screw feeder.

[0049] In this embodiment, the auxiliary screw feeder motor 2 is configured as a driving motor and the power interface of the auxiliary screw feeder motor 2 is configured to be connected to the output port of the second inverter 4 .

[0050] The auxiliary screw feeder motor 2 forms a support connection point for the second frequency converter 4, and the auxiliary screw feeder motor 2 realizes connection with the second frequency converter 4. Its technical purpose is to serve as a component for conveying power to the auxiliary screw feeder.

[0051] In this embodiment, interface S1-A, interface COM-A and interface S2-A are provided in the first frequency converter 3 and the input interface of the first frequency converter 3 is set to be connected to the output interface of the air switch 5, the output interface of the first frequency converter 3 is set to be connected to the output interface of the main screw feeder motor 1, the interface S1-A and the interface COM-A are respectively set to be connected to the two-way relay 7, and the interface COM-A and the interface S2-A are respectively set to be connected to the panel double switch 6.

[0052] Through the first frequency converter 3, a support connection point for the main screw feeder motor 1, the air switch 5, the panel double switch 6 and the two-way relay 7 is formed. The first frequency converter 3 realizes the connection with the main screw feeder motor 1, the connection with the air switch 5, the connection with the panel double switch 6, and the connection with the two-way relay 7. Its technical purpose is to serve as a component for starting and shutting down the main screw feeder motor 1.

[0053] In this embodiment, interface S1-B, interface COM-B and interface S2-B are provided in the second frequency converter 4 and the input interface of the second frequency converter 4 is set to be connected to the output interface of the air switch 5, the output interface of the second frequency converter 4 is set to be connected to the output interface of the auxiliary screw feeder motor 2, the interface S1-B and the interface COM-B are respectively set to be connected to the two-way relay 7 and the interface COM-B and the interface S2-B are respectively set to be connected to the panel double switch 6.

[0054] Through the second frequency converter 4, a support connection point is formed for the auxiliary screw feeder motor 2, the air switch 5, the panel double switch 6 and the two-way relay 7. The second frequency converter 4 realizes the connection with the auxiliary screw feeder motor 2, the connection with the air switch 5, the connection with the panel double switch 6, and the connection with the two-way relay 7. Its technical purpose is to serve as a component for starting and shutting down the auxiliary screw feeder motor 2.

[0055] In this embodiment, the output interface of the air switch 5 is respectively configured to be connected to the first inverter 3 and the second inverter 4 and the input interface of the air switch 5 is configured to be connected to an external power supply cable.

[0056] Through the air switch 5, a support connection point for the first frequency converter 3 and the second frequency converter 4 is formed. The air switch 5 realizes the connection with the first frequency converter 3 and the connection with the second frequency converter 4. Its technical purpose is to serve as a control component for supplying power to the first frequency converter 3 and the second frequency converter 4.

[0057] In this embodiment, one pair of on-off interfaces of the panel double switch 6 is configured to be connected to the first frequency converter 3 and the other pair of on-off interfaces of the panel double switch 6 is configured to be connected to the second frequency converter 4 .

[0058] Through the double switch 6 on the panel, a support connection point for the first inverter 3 and the second inverter 4 is formed. The double switch 6 on the panel realizes the connection with the first inverter 3 and the connection with the second inverter 4. Its technical purpose is to serve as a control component for switching on and off the internal interfaces of the first inverter 3 and the second inverter 4.

[0059] In this embodiment, one pair of control conversion interfaces of the dual-way relay 7 is set to be connected to the first inverter 3 and another pair of control conversion interfaces of the panel dual switch 6 is set to be connected to the second inverter 4, and the control interface of the dual-way relay 7 is set to be connected to the wireless remote control 8.

[0060] Through the dual-circuit relay 7, a supporting connection point is formed for the first inverter 3, the second inverter 4 and the wireless remote control 8. The dual-circuit relay 7 realizes the connection with the first inverter 3, the connection with the second inverter 4, and the connection with the wireless remote control 8. Its technical purpose is to serve as a control component for delaying the operation of the first inverter 3 and the second inverter 4.

[0061] In this embodiment, the wireless remote controller 8 is configured as a radio remote controller and the output port of the wireless remote controller 8 is configured to be connected to the two-way relay 7 when receiving.

[0062] A supporting connection point for the dual-circuit relay 7 is formed by the wireless remote controller 8 , and the connection with the first inverter 3 is realized by the wireless remote controller 8 . The technical purpose of the wireless remote controller 8 is to serve as a component for controlling the working state of the dual-circuit relay 7 .

[0063] In this embodiment, the main screw feeder motor 1 and the auxiliary screw feeder motor 2 are arranged to be distributed in a delayed control manner with the first frequency converter 3, the second frequency converter 4, the air switch 5, the panel double switch 6 and the dual-way relay 7, and the main screw feeder motor 1, the auxiliary screw feeder motor 2, the first frequency converter 3, the second frequency converter 4, the air switch 5, the panel double switch 6 and the dual-way relay 7 are arranged to be distributed in a remote control manner with the wireless remote controller 8, one pair of on-off interfaces of the panel double switch 6 are arranged to be connected to the interface COM-A and the interface S2-A respectively, one pair of control conversion interfaces of the dual-way relay 7 are arranged to be connected to the interface S1-A and the interface COM-A respectively, another pair of on-off interfaces of the panel double switch 6 are arranged to be connected to the interface COM-B and the interface S2-B respectively, and another pair of control conversion interfaces of the dual-way relay 7 are arranged to be connected to the interface S1-B and the interface COM-B respectively.

[0064] The method of using this embodiment: when the double-screw feeder needs to be started, the two-way relay 7 is put into working state through the wireless remote controller 8, and the interface COM-A and the interface S2-A are put into connected state through the panel double switch 6, and the interface COM-B and the interface S2-B are put into connected state. When the first frequency converter 3 and the second frequency converter 4 are put into power-on state through the air switch 5, the interface S1-B and the interface COM-B are put into connected state through another pair of control conversion interfaces of the two-way relay 7, and the interface S1-A and the interface COM-A are put into connected state through one pair of control conversion interfaces of the two-way relay 7. The connection state of interface S1-B and interface COM-B takes precedence over the connection state of interface S1-A and interface COM-A, so that the auxiliary screw feeder motor 2 takes precedence over the main screw feeder motor 1 in starting.

[0065] When the double-screw feeder needs to be stopped, the double switch 6 on the panel is used to disconnect the interface COM-A and the interface S2-A, and the interface COM-B and the interface S2-B are disconnected. When the first frequency converter 3 and the second frequency converter 4 are in the power-off state through the air switch 5, the interface S1-B and the interface COM-B are disconnected through another pair of control conversion interfaces of the dual-way relay 7. The interface S1-A and the interface COM-A are disconnected before the interface S1-B and the interface COM-B are disconnected, so that the main screw feeder motor 1 stops before the auxiliary screw feeder motor 2. The wireless remote controller 8 is used to put the dual-way relay 7 in a non-working state.

[0066] When verifying the present invention, the inventor abandoned the existing technical feature that the main screw feeder and the auxiliary screw feeder are manually operated step by step by the operators, and first proposed a technical feature that makes the start and stop states of the double screw feeder asynchronous, and obtained the first unexpected technical effect: the conveying process of the powder and granular materials is kept in a continuous state, preventing the blockage of the powder and granular materials, and obtained the second unexpected technical effect: the time period control of the conveying section of the powder and granular materials is realized, and a short period of space appears between the conveying sections, which improves the conveying efficiency of the powder and granular materials, and obtained the third unexpected technical effect: the delay program control by the dual-circuit relay 7 is realized, which improves the efficiency of the conveying of the powder and granular materials. The reliability of the electrical control device of the double-screw feeder of the powder and particle material transport tank truck has achieved the fourth unexpected technical effect: the internal interface of the first frequency converter 3 and the second frequency converter 4 is switched on and off by the double switch 6 on the panel, preventing the first frequency converter 3 and the second frequency converter 4 from being operated incorrectly, and the fourth unexpected technical effect is achieved: the remote working status control of the dual-channel relay 7 by the wireless remote control 8 is achieved, which meets the application requirements of the powder and particle material transport tank truck, and the fifth unexpected technical effect is achieved: the power-on and power-off control of the first frequency converter 3 and the second frequency converter 4 by the air switch 5 is achieved, which improves the working status stability performance of the first frequency converter 3 and the second frequency converter 4.

[0067] In a second embodiment of the present invention, the main screw feeder motor 1, the auxiliary screw feeder motor 2, the inverter group and the dual-circuit relay 7 are interconnected in such a manner that the start and stop states of the operation of the twin screw feeder are asynchronous.

[0068] In this embodiment, the dual-path relay 7 is connected to the main screw feeder motor 1, the auxiliary screw feeder motor 2 and the inverter group in a manner that the control signal is in a time difference state.

[0069] In this embodiment, the frequency converter group is configured to include a first frequency converter 3 and a second frequency converter 4 .

[0070] In this embodiment, a first accessory device is further included and is arranged on the frequency converter group. The first accessory device is arranged as an air switch 5 .

[0071] In this embodiment, a second accessory device is further included and is arranged in the inverter group. The second accessory device is arranged as a panel double switch 6 .

[0072] In this embodiment, a third accessory device is further included and is provided on the dual-circuit relay 7 . The third accessory device is provided as a wireless remote controller 8 .

[0073] The second embodiment of the present invention is based on the first embodiment.

[0074] The utility model has the following features:

[0075] 1. Due to the design of the main screw feeder motor 1, the auxiliary screw feeder motor 2, the frequency converter group and the dual-channel relay 7, the main screw feeder motor 1 and the auxiliary screw feeder motor 2 are used to realize a two-stage composition of the twin screw feeder for the powder and granular material transport tank truck. The frequency converter group is used to realize start and stop control of the main screw feeder motor 1 and the auxiliary screw feeder motor 2. The dual-channel relay 7 is used to realize that the control signals between the frequency converter groups are in a time difference state, and the operation start and stop state of the twin screw feeder is realized in an asynchronous state, which solves the technical problem of the operator performing manual step-by-step operation of the main screw feeder and the auxiliary screw feeder, thereby improving the operation optimization performance of the twin screw feeder.

[0076] 2. Due to the design of the first frequency converter 3 and the second frequency converter 4, the main screw feeder motor 1 and the auxiliary screw feeder motor 2 can be controlled separately.

[0077] 3. Due to the design of the air switch 5, the on-off control of the inverter group is realized.

[0078] 4. Due to the design of the double switch 6 on the panel, the working state of the inverter group can be controlled.

[0079] 5. Due to the design of the wireless remote controller 8, the working state of the dual-circuit relay 7 can be controlled.

[0080] 6. Since the design limits the numerical range of the structural shape, the numerical range is the technical feature in the technical solution of the utility model, and is not a technical feature calculated by formula or obtained through a limited number of tests. Tests have shown that the technical feature of this numerical range has achieved good technical effects.

[0081] 7. Due to the design of the technical features of the present invention, the effects of the individual and combined technical features have been shown through experiments to show that the performance indicators of the present invention are at least 1.7 times that of the existing performance indicators, and the evaluation shows that the present invention has a good market value.

[0082] There are other technical features that are connected to the main screw feeder motor 1, the auxiliary screw feeder motor 2, the inverter group and the dual-circuit relay 7 so that the start and stop states of the double screw feeder are asynchronous, which are all one of the embodiments of the present utility model, and the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to meet the requirements of the Patent Law, the Patent Implementation Rules and the Examination Guidelines, all possible combinations of the technical features in the above-mentioned embodiments are no longer described.

[0083] Therefore, in the technical field of electrical control devices for twin-screw feeders used in powder and granular material transport tank trucks, all technical contents including a main screw feeder motor 1 used as the outer material section of the twin-screw feeder, an auxiliary screw feeder motor 2 used as the inner material section of the twin-screw feeder, a frequency converter group arranged on the main screw feeder motor 1 and the auxiliary screw feeder motor 2, and a dual-circuit relay 7 arranged on the frequency converter group are within the protection scope of this utility model.

Claims

1. An electrical control device for a twin-screw feeder of a powder and granular material transport tanker, characterized by: The invention comprises a main screw feeder motor (1) used as an outer material section of a double screw feeder, an auxiliary screw feeder motor (2) used as an inner material section of the double screw feeder, a frequency converter group arranged on the main screw feeder motor (1) and the auxiliary screw feeder motor (2), and a two-way relay (7) arranged on the frequency converter group.

2. The electrical control device for a double-screw feeder for a powder and granular material transport tanker according to claim 1 is characterized in that: The main screw feeder motor (1), the auxiliary screw feeder motor (2), the frequency converter group and the dual-circuit relay (7) are connected to each other in such a way that the start and stop states of the double screw feeder are asynchronous.

3. The electrical control device for a double-screw feeder for a powder and granular material transport tanker according to claim 2 is characterized in that: The dual-path relay (7) is connected to the main screw feeder motor (1), the auxiliary screw feeder motor (2) and the frequency converter group in a manner that the control signal is in a time difference state.

4. The electrical control device for a double-screw feeder for a powder and granular material transport tanker according to claim 1 is characterized in that: The frequency converter group is configured to include a first frequency converter (3) and a second frequency converter (4). Or, it further comprises a first accessory device and the first accessory device is arranged on the frequency converter group, and the first accessory device is arranged as an air switch (5), Or, it further comprises a second accessory device and the second accessory device is arranged in the inverter group, and the second accessory device is arranged as a panel double switch (6), Alternatively, a third accessory device is further included and the third accessory device is arranged on the dual-circuit relay (7), and the third accessory device is arranged as a wireless remote controller (8).

5. The electrical control device for a double-screw feeder for a powder and granular material transport tanker according to claim 4 is characterized in that: An air switch (5) is provided on the first frequency converter (3) and the second frequency converter (4); a main screw feeder motor (1) is provided on the first frequency converter (3) and an auxiliary screw feeder motor (2) is provided on the second frequency converter (4); a panel double switch (6) and a two-way relay (7) are provided between the first frequency converter (3) and the second frequency converter (4); and a wireless remote controller (8) is provided on the two-way relay (7).

6. The electrical control device for a double screw feeder for a powder and granular material transport tanker according to claim 5 is characterized in that: The screw feeder motor (1) is configured as a driving motor and the power supply interface of the main screw feeder motor (1) is configured to be connected to the output port of the first frequency converter (3).

7. The electrical control device for a double-screw feeder for a powder and granular material transport tanker according to claim 5, characterized in that: The auxiliary screw feeder motor (2) is configured as a driving motor and the power supply interface of the auxiliary screw feeder motor (2) is configured to be connected to the output port of the second frequency converter (4).

8. The electrical control device for a double-screw feeder for a powder and granular material transport tanker according to claim 5, characterized in that: One pair of control conversion interfaces of the dual-circuit relay (7) is configured to be connected to the first frequency converter (3), and another pair of control conversion interfaces of the panel dual switch (6) is configured to be connected to the second frequency converter (4). The control interface of the dual-circuit relay (7) is configured to be connected to the wireless remote controller (8).

9. The electrical control device for a double screw feeder for a powder and granular material transport tanker according to claim 5, wherein: The first frequency converter (3) is provided with an interface S1-A, an interface COM-A and an interface S2-A, and the input interface of the first frequency converter (3) is configured to be connected to the output interface of the air switch (5), the output interface of the first frequency converter (3) is configured to be connected to the output interface of the main screw feeder motor (1), the interface S1-A and the interface COM-A are respectively configured to be connected to the dual-circuit relay (7), and the interface COM-A and the interface S2-A are respectively configured to be connected to the panel dual switch (6). Alternatively, the second frequency converter (4) is provided with an interface S1-B, an interface COM-B, and an interface S2-B, and the input interface of the second frequency converter (4) is configured to be connected to the output interface of the air switch (5), the output interface of the second frequency converter (4) is configured to be connected to the output interface of the auxiliary screw feeder motor (2), the interface S1-B and the interface COM-B are respectively configured to be connected to the dual-circuit relay (7), and the interface COM-B and the interface S2-B are respectively configured to be connected to the panel double switch (6), Or, the output interface of the air switch (5) is respectively configured to be connected to the first frequency converter (3) and the second frequency converter (4) and the input interface of the air switch (5) is configured to be connected to an external power supply cable, Or, one pair of on-off interfaces of the panel double switch (6) is configured to be connected to the first frequency converter (3) and another pair of on-off interfaces of the panel double switch (6) is configured to be connected to the second frequency converter (4), Alternatively, the wireless remote controller (8) is configured as a radio remote controller and the output port of the wireless remote controller (8) is configured to be connected to the dual-channel relay (7) when receiving.

10. The electrical control device for a double screw feeder for a powder and granular material transport tanker according to any one of claims 1 to 9, characterized in that: The screw feeder motor (1) and the auxiliary screw feeder motor (2) are arranged to be distributed in a time-delayed control manner with the first frequency converter (3), the second frequency converter (4), the air switch (5), the panel double switch (6) and the dual-way relay (7), and the main screw feeder motor (1), the auxiliary screw feeder motor (2), the first frequency converter (3), the second frequency converter (4), the air switch (5), the panel double switch (6) and the dual-way relay (7) are arranged to be distributed in a remote control manner with the wireless remote controller (8), wherein one pair of on-off interfaces of the panel double switch (6) is arranged to be connected to the interface COM-A and the interface S2-A respectively, one pair of control conversion interfaces of the dual-way relay (7) is arranged to be connected to the interface S1-A and the interface COM-A respectively, another pair of on-off interfaces of the panel double switch (6) is arranged to be connected to the interface COM-B and the interface S2-B respectively, and another pair of control conversion interfaces of the dual-way relay (7) is arranged to be connected to the interface S1-B and the interface COM-B respectively.

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