Weightlessness type continuous precise feeding system

Abstract

The utility model discloses a weightlessness type continuous precise feeding system, which relates to the technical field of automatic continuous feeding equipment, and particularly structurally comprises a material supplementing component, a feeding component and a feeding component, the weighing assembly is mounted at the bottom end of the material supplementing assembly; one end of the pressure balance pipe is communicated with the material supplementing assembly, and the other end is communicated with the weighing assembly; the weighing assembly includes: a chassis; the weighing platform assembly is mounted on the bottom frame; the weightlessness scale feeding assembly is installed on the weighing platform assembly; the weightlessness scale arch breaking driving assembly is mounted on the weightlessness scale feeding assembly; the bottom of the weightlessness scale bin communicates with the feeding end of the weightlessness scale feeding assembly, and the side face of the weightlessness scale bin communicates with the arch breaking end of the weightlessness scale arch breaking driving assembly; the technical problems that existing weight-loss type feeding equipment is large in noise and vibration, the feeding precision is directly affected, and meanwhile pressure balance is insufficient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated continuous feeding equipment, in particular to a weightless continuous precision feeding system. Background Art

[0002] Loss-in-weight feeding equipment is widely used in industries such as printing, pharmaceuticals, chemicals, rubber and plastics, building materials, food, and lithium batteries. It can achieve fully automated, continuous, and uniform metering feeding, improving factory automation and the uniformity of material proportions. It can also effectively ensure the quality and efficiency of user products. It plays a very important role in the production processes of various industries.

[0003] Currently, the feeding components of feeding equipment are mostly driven by variable frequency motors, gear reducers and gear reduction boxes with complex structures. The feeding process is subject to slightly strong mechanical vibration and loud noise, which will directly affect the accuracy of high-precision batching. At present, the feeding bin and loss-in-weight scale of the loss-in-weight feeding system mostly use soft connections, which can effectively reduce the impact of loss-in-weight scale feeding, discharging and equipment vibration on the accuracy. However, it does not solve the root cause of vibration and noise caused by the transmission. In addition, during the feeding stage or when there is a large pressure change in the bin, the pressure fluctuation caused by material transfer in the bin is not considered, resulting in the accuracy of the loss-in-weight scale exceeding the preset value. Utility Model Content

[0004] The purpose of the utility model is to provide a loss-in-weight continuous precision feeding system, which solves the technical problems of the prior art loss-in-weight feeding equipment, such as large noise and vibration, which directly affect the feeding accuracy, and lack of pressure balance.

[0005] The present application discloses a loss-in-weight continuous precision feeding system, comprising:

[0006] Feeding components;

[0007] A weighing assembly is installed at the bottom end of the feeding assembly;

[0008] a pressure balance tube, one end of which is connected to the feeding assembly and the other end of which is connected to the weighing assembly;

[0009] The weighing assembly comprises:

[0010] chassis;

[0011] A weighing platform assembly is mounted on the base frame;

[0012] A loss-in-weight feeding assembly is installed on the weighing platform assembly;

[0013] A loss-in-weight scale arch-breaking drive assembly is installed on the loss-in-weight scale feeding assembly;

[0014] The bottom of the loss-in-weight weighing silo is connected to the feeding end of the loss-in-weight weighing feeding component, and the side of the loss-in-weight weighing silo is connected to the arch breaking end of the loss-in-weight weighing arch breaking drive component.

[0015] This application designs a weighing component, including a loss-in-weight scale arch-breaking drive component and a loss-in-weight scale feeding component. An independent drive source is used to facilitate the use of a multi-stage gear reducer, thereby reducing the noise and vibration problems of the loss-in-weight feeding equipment, thereby ensuring feeding accuracy.

[0016] Based on the above technical solution, the embodiment of the present application can also be improved as follows:

[0017] Furthermore, the weightlessness scale arch breaking drive assembly includes:

[0018] Arch breaking servo motor;

[0019] An arch-breaking reducer is installed at the output end of the arch-breaking servo motor, and the arch-breaking reducer is a planetary gear reducer;

[0020] A diaphragm coupling is installed at the end of the arch-breaking reducer;

[0021] An arch-breaking driving rod is installed at the end of the diaphragm coupling away from the arch-breaking reducer;

[0022] The loss-in-weight feeding assembly comprises:

[0023] Feeding servo motor;

[0024] A feeding reducer is installed at the output end of the feeding servo motor, and the feeding reducer is a planetary gear reducer;

[0025] A first-stage reduction gearbox is installed at the end of the feeding reducer, and the driving gear of the first-stage reduction gearbox is cooperatively connected with the feeding reducer;

[0026] The feeding screw assembly is connected to the bottom of the loss-in-weight weighing silo, and the feeding screw assembly is connected to the first-stage reduction gearbox. The beneficial effect of this step is that the planetary gear reducer can simplify the gearbox reduction structure, thereby reducing noise and vibration.

[0027] Furthermore, a double-lip sealing ring is installed at the contact point between the arch-breaking driving rod and the bottom of the loss-in-weight weighing silo. The beneficial effect of adopting this step is to ensure the sealing performance.

[0028] Furthermore, the feeding component comprises:

[0029] Bracket;

[0030] A weighing module is installed on the top of the bracket;

[0031] A feeding silo, the outer side of which is mounted on the weighing module;

[0032] A stirring assembly is installed on the top of the feeding silo, and the stirring end of the stirring assembly extends into the interior of the feeding silo;

[0033] A feeding assembly is installed at the bottom of the feeding silo;

[0034] A feeding arch-breaking component is installed on the side of the feeding silo, and the arch-breaking end of the feeding arch-breaking component extends into the interior of the feeding silo;

[0035] The feeding pipe is connected to the feeding assembly at one end and the loss-in-weight weighing silo at the other end. The beneficial effect of this step is that stable feeding can be achieved through the cooperation of various components.

[0036] Furthermore, the feeding silo is connected to a back-blowing dust collector; the loss-in-weight weighing silo is connected to a back-blowing respirator. The beneficial effect of this step is to utilize the original buried of microporous filtration to ensure clean and effective gas exchange, thereby improving feeding accuracy.

[0037] Furthermore, flexible connectors are installed at both ends of the pressure balance pipe, and the flexible connectors are respectively connected to the feeding silo and the loss-in-weight weighing silo. The beneficial effect of this step is to achieve flexible connection through the flexible connector to prevent abnormal vibration from affecting the accuracy of the weighing system.

[0038] Furthermore, the feeding silo is connected to a pneumatic ball valve and a pressure transmitter. The beneficial effect of this step is that the pressure between the two components is combined with a pressure balance pipe to ensure effective exchange, achieve pressure balance, and reduce the impact on feeding accuracy.

[0039] Furthermore, a pneumatic vibrator is installed on the side of the feeding silo.

[0040] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0041] 1. This application adopts a planetary gear reducer direct drive, which can avoid slightly strong mechanical vibration and loud noise during the working process of the feeding system, while also ensuring the accuracy of the ingredients.

[0042] 2. This application is equipped with pneumatic ball valves, pressure transmitters and other components, which can detect and compensate for pressure changes during the feeding stage or when there are large pressure changes in the bin, effectively improving the metering accuracy of continuous feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 This is a structural diagram of a loss-in-weight continuous precision feeding system according to a specific embodiment of the present utility model;

[0045] Figure 2 for Figure 1 The main view;

[0046] Figure 3 for Figure 1 A cross-sectional view of the loss-in-weight scale arch-breaking drive assembly and the loss-in-weight scale feeding assembly;

[0047] Figure 4 for Figure 1 Schematic diagram of the structure of the middle feeding component;

[0048] Reference numerals:

[0049] 1-feeding assembly; 2-weighing assembly; 3-pressure balance tube;

[0050] 101-bracket; 102-weighing module; 103-feeding silo; 104-stirring assembly; 105-feeding feeding assembly; 106-feeding arch breaking assembly; 107-feeding pipe; 108-backflush dust collector; 109-backflush respirator; 110-pneumatic ball valve; 111-pressure transmitter; 112-pneumatic vibrator; 113-flexible connector;

[0051] 201- chassis; 202- weighing platform assembly; 203- loss-in-weight scale feeding assembly; 204- loss-in-weight scale arch-breaking drive assembly; 205- loss-in-weight scale silo; 206- arch-breaking servo motor; 207- arch-breaking reducer; 208- diaphragm coupling; 209- arch-breaking drive rod; 210- double-lip seal;

[0052] 211-feeding servo motor; 212-feeding reducer; 213-first-stage reduction gearbox; 214-feeding screw assembly. DETAILED DESCRIPTION

[0053] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0054] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0055] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0056] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0057] Example:

[0058] like Figure 1-4 As shown, the embodiment of the present application discloses a loss-in-weight continuous precision feeding system, which is equipped with a feeding bin, a loss-in-weight scale, a back-blowing dust collector and a pressure balance system, etc., which can achieve stable, efficient, continuous and precise feeding.

[0059] like Figure 1 、 2 As shown, the specific structure of this application includes:

[0060] Feeding component 1, which is mainly used for feeding, and subsequently cooperates with weighing component 2 to achieve accurate feeding;

[0061] A weighing assembly 2 is installed at the bottom end of the feeding assembly 1 and is used for accurate weighing;

[0062] One end of the pressure balance tube 3 is connected to the feeding component 1, and the other end is connected to the weighing component 2, so that the air pressure inside the two chambers can be balanced. This can solve the problem of rapid changes in internal pressure caused by multiple feedings, and can effectively improve the metering accuracy of the loss-in-weight continuous precision feeding system.

[0063] This application makes improvements to the weighing component, as follows:

[0064] The weighing assembly 2 includes:

[0065] The base frame 201 is an L-shaped member, and accessories such as an explosion-proof distribution box are installed on its outer side;

[0066] The weighing platform assembly 202 is mounted on the base frame 201. The weighing platform assembly 202 is an existing component that realizes the weighing function and will not be described in detail here.

[0067] The loss-in-weight scale feeding assembly 203 is mounted on the weighing platform assembly 202. Similarly, the loss-in-weight scale feeding assembly 203 is an existing feeding assembly, and the specific structure is not described in detail. It only needs to realize the feeding function. To ensure sealing, the present application is provided with a stainless steel shell PTFE double-lip sealing ring at the contact point with the feeding barrel to ensure sealing during material transportation.

[0068] The loss-in-weight scale arch-breaking drive assembly 204 is installed on the loss-in-weight scale feeding assembly 203;

[0069] The loss-in-weight scale silo 205 is connected to the feeding end of the loss-in-weight scale feeding assembly 203 at its bottom, and the side of the loss-in-weight scale silo 205 is connected to the arch breaking end of the loss-in-weight scale arch breaking drive assembly 204. The loss-in-weight scale silo 205 in this application is an existing component.

[0070] like Figure 3 As shown, the loss-in-weight feeding assembly 203 includes:

[0071] Feeding servo motor 211;

[0072] A feeding reducer 212 is installed at the output end of the feeding servo motor 211, and the feeding reducer 212 is a planetary gear reducer;

[0073] The first-stage reduction gearbox 213 is installed at the end of the feeding reducer 212, and the driving gear of the first-stage reduction gearbox 23 is connected with the feeding reducer 212. The present application realizes transmission by a planetary gear reducer plus a simple first-stage reduction gearbox, thereby reducing vibration;

[0074] The feeding screw assembly 214 is connected to the bottom of the loss-in-weight scale silo 205, and the feeding screw assembly 214 is connected to the first-stage reduction gearbox 213; compared with the existing loss-in-weight scale feeding assembly, this application adopts a planetary gear reducer.

[0075] This application further describes the weight loss scale arch breaking drive assembly 204, which includes:

[0076] The arch-breaking servo motor 206 is an existing servo motor;

[0077] The arch-breaking reducer 207 is installed at the output end of the arch-breaking servo motor 206. The arch-breaking reducer 207 is a planetary gear reducer. Compared with the existing mechanism, the arch-breaking drive assembly 204 of the weight-loss scale in this application adopts an independent drive source to simplify the structure, that is, adopt a direct drive mode to ensure the sealing effect and reduce the noise and vibration during operation.

[0078] The diaphragm coupling 208 is installed at the end of the arch-breaking reducer 207;

[0079] The arch-breaking driving rod 209 is installed at one end of the diaphragm coupling 208 away from the arch-breaking reducer 207. When the arch-breaking driving rod 209 is installed, bearings are provided at the front and rear ends for support, so as to ensure stability.

[0080] In order to further ensure the sealing of the contact between the arch-breaking driving rod 209 and the ball bucket of the loss-in-weight weighing silo 205, the present application uses two parallel double-lip stainless steel shell PTFE sealing rings 215 specially designed for powder environment to ensure the sealing effect at the contact between the arch-breaking driving rod 209 and the ball bucket, that is, a double-lip sealing ring 210 is installed at the contact between the arch-breaking driving rod 209 and the bottom of the loss-in-weight weighing silo 205.

[0081] The weight-loss scale arch-breaking drive assembly 204 in the present application also includes other components, such as conventional components such as a connecting frame, which will not be described in detail here.

[0082] In one embodiment, if Figure 4 As shown, the feeding component 1 includes:

[0083] Bracket 101, which is an existing bracket used for supporting, and can be a rod or other component;

[0084] A weighing module 102 is installed on the top of the bracket 101. The weighing module is an existing module, specifically a three-point weighing module, for weighing the weight of the feeding silo;

[0085] A feeding silo 103, the outer side of which is mounted on the weighing module 102, is an existing silo for carrying powder;

[0086] A stirring assembly 104 is installed on the top of the feeding silo 103, and the stirring end of the stirring assembly 104 extends into the interior of the feeding silo 103;

[0087] The feeding assembly 105 is installed at the bottom of the feeding silo 103. The feeding assembly 105 is mainly used to transport materials, that is, to transport them from the feeding silo 103 to the inside of the loss-in-weight weighing silo 205;

[0088] The feeding arch breaking component 106 is installed on the side of the feeding silo 103, and the arch breaking end of the feeding arch breaking component 106 extends into the interior of the feeding silo 103;

[0089] The feed pipe 107 is connected to the feeding assembly 105 at one end and to the loss-in-weight weighing silo 205 at the other end; the stirring rod of the stirring assembly 104 and the arch breaking rod of the feeding arch breaking assembly 106 in this application can improve the fluidity of the material and provide a large flow of material within a certain period of time.

[0090] In order to ensure the metering accuracy of the feeding system of this application, this application is also equipped with a relevant pressure balancing system, which is as follows:

[0091] The feeding silo 103 is connected to a back-blowing dust collector 108 ; the loss-in-weight weighing silo 205 is connected to a back-blowing respirator 109 .

[0092] Among them, the feeding silo 103 and the loss-in-weight scale silo 205 are both connected to a pneumatic ball valve 110 and a pressure transmitter 111, which, together with the controller, can be used to monitor, adjust and compensate for the rapid changes in internal pressure caused by multiple feedings during the continuous feeding process. It has been verified that this can effectively improve the metering accuracy of the loss-in-weight scale continuous precision feeding system.

[0093] At the same time, flexible connectors 113 are installed at both ends of the pressure balance pipe 3, and the flexible connectors 113 are respectively connected to the feeding silo 103 and the loss-in-weight scale silo 205. The flexible connectors 113 can effectively reduce the influence of the loss-in-weight scale feeding, discharging and equipment vibration on the accuracy.

[0094] Wherein, a pneumatic vibrator 112 is installed on the side of the feeding silo 103, so as to ensure the feeding speed.

[0095] The structure of this application is further described below:

[0096] This application is mainly designed for various components, including feeding components, weighing components, pressure balancing system and other connecting components;

[0097] Specifically, a feeding port is provided on the top of the feeding silo in the feeding assembly, and the silo assembly is welded from stainless steel plates; at the same time, there are multiple pneumatic vibrators, which are spaced around the feeding silo; and the base frame is a feeding silo support frame to support the feeding silo. The base frame is welded from structural profiles to ensure sufficient strength, rigidity and stability, and a weighing module is configured on the top; the top of the stirring rod of the stirring assembly contains a bearing support and a sealing structure, and the stirring rod is welded from stainless steel flat steel and a seamless steel pipe; the arch breaking rod of the feeding arch breaking assembly is bent and polished, which can effectively prevent the material from agglomerating and arching.

[0098] Among them, the material is introduced from the feed port, the stirring rod and the arch breaking rod can improve the fluidity of the material, and the feeding component starts the feeding single screw to provide a large flow of material to the lower layer high-precision loss-in-weight scale in a short time.

[0099] The chassis in the weighing assembly is also provided with an explosion-proof distribution box assembly to facilitate the subsequent installation of the electronic control; at the same time, it adopts a direct drive mode of servo motor and reducer. Compared with the widely used loss-in-weight scale, the drive assembly is more compact and reliable. In addition, the noise and vibration during operation are greatly reduced. The special feeding assembly reduction mechanism is optimized from the conventional multi-stage gear reduction transmission to a single-stage gear engagement. On the basis of ensuring the conveying capacity, the drive structure is optimized, the vibration and noise that may be caused by the drive mechanism are greatly reduced, and the feeding accuracy is guaranteed; at the same time, the contact between the loss-in-weight scale feeding assembly and the feeding barrel in this application is provided with a stainless steel shell PTFE double-lip sealing ring to ensure sealing during material conveying.

[0100] The present application is also provided with a pressure balancing system, which includes a back-blowing dust collector, a back-blowing respirator, a pneumatic ball valve, a pressure transmitter, a manual-automatic valve group, and the like.

[0101] The feeding system in this application can eliminate the technical problems of the original loss-in-weight scale, such as the variable frequency electrical drive, complicated gearbox reduction structure, loud noise and vibration, which affect the feeding accuracy. In addition, the pressure balance system can effectively alleviate the rapid changes in the internal pressure of the silo caused by multiple refills during continuous feeding, and realize real-time pressure monitoring to meet the feeding accuracy.

[0102] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0103] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A loss-in-weight continuous precision feeding system, characterized in that: include: Feeding component (1); A weighing assembly (2) is installed at the bottom end of the feeding assembly (1); A pressure balance tube (3), one end of which is connected to the feeding assembly (1) and the other end of which is connected to the weighing assembly (2); The weighing assembly (2) comprises: bottom frame (201); A weighing platform assembly (202) is mounted on the base frame (201); A loss-in-weight feeding assembly (203) is mounted on the weighing platform assembly (202); A loss-in-weight scale arch-breaking drive assembly (204) is mounted on the loss-in-weight scale feeding assembly (203); The bottom of the loss-in-weight weighing silo (205) is connected to the feeding end of the loss-in-weight weighing feeding component (203), and the side of the loss-in-weight weighing silo (205) is connected to the arch breaking end of the loss-in-weight weighing arch breaking driving component (204).

2. The loss-in-weight continuous precision feeding system according to claim 1, characterized in that: The weight-loss scale arch-breaking driving assembly (204) comprises: Arch breaking servo motor (206); An arch-breaking reducer (207) is installed at the output end of the arch-breaking servo motor (206), and the arch-breaking reducer (207) is a planetary gear reducer; A diaphragm coupling (208) is mounted on the end of the arch-breaking reducer (207); An arch-breaking driving rod (209) is mounted on an end of the diaphragm coupling (208) away from the arch-breaking reducer (207); The loss-in-weight feeding component (203) comprises: Feeding servo motor (211); A feeding reducer (212) is installed at the output end of the feeding servo motor (211), and the feeding reducer (212) is a planetary gear reducer; A first-stage reduction gearbox (213) is mounted on the end of the feeding reducer (212), and a driving gear of the first-stage reduction gearbox (213) is cooperatively connected to the feeding reducer (212); The feeding screw assembly (214) is communicated with the bottom of the loss-in-weight weighing silo (205), and the feeding screw assembly (214) is cooperatively connected with the primary reduction gearbox (213).

3. The loss-in-weight continuous precision feeding system according to claim 2, characterized in that: A double-lip sealing ring (210) is installed at the contact point between the arch-breaking driving rod (209) and the bottom of the loss-in-weight weighing silo (205).

4. The loss-in-weight continuous precision feeding system according to claim 3, characterized in that: The feeding component (1) comprises: Bracket (101); A weighing module (102) is mounted on the top of the bracket (101); A feeding silo (103), the outer side of the feeding silo (103) being mounted on the weighing module (102); A stirring component (104) is installed on the top of the feeding silo (103), and a stirring end of the stirring component (104) extends into the interior of the feeding silo (103); A feeding assembly (105) is installed at the bottom of the feeding silo (103); A feeding arch-breaking component (106) is installed on the side of the feeding silo (103), and the arch-breaking end of the feeding arch-breaking component (106) extends into the interior of the feeding silo (103); The feed pipe (107) has one end connected to the feeding assembly (105) and the other end connected to the loss-in-weight weighing silo (205).

5. The loss-in-weight continuous precision feeding system according to claim 4, characterized in that: The feeding silo (103) is connected to a back-blowing dust collector (108) installed thereon; the loss-in-weight weighing silo (205) is connected to a back-blowing respirator (109) installed thereon.

6. The loss-in-weight continuous precision feeding system according to claim 5, characterized in that: Soft connectors are installed at both ends of the pressure balance pipe (3), and the soft connectors are respectively connected to the feeding silo (103) and the loss-in-weight weighing silo (205).

7. The loss-in-weight continuous precision feeding system according to claim 6, characterized in that: The feeding silo (103) is connected to a pneumatic ball valve (110) and a pressure transmitter (111).

8. The loss-in-weight continuous precision feeding system according to claim 7, characterized in that: A pneumatic vibrator is installed on the side of the feeding silo (103).

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