Batching scale without flexible connection

Abstract

The utility model relates to the technical field of ingredient weighing equipment. The utility model relates to a batching scale without flexible connection, and aims to provide a batching scale without flexible connection, which does not need to be provided with flexible connection so as to avoid frequent replacement of flexible connection, save labor cost, improve weighing accuracy and stability and reduce dust pollution to the environment at the same time. The technical scheme is as follows: the batching scale without flexible connection comprises a scale hopper with a discharge valve at the bottom; the electronic scale is characterized by further comprising a shell arranged on the periphery of the scale hopper, a supporting piece fixed on the shell and a plurality of groups of weighing systems which are arranged on the supporting piece and are used for weighing the scale hopper, the scale hopper is hung on the plurality of groups of weighing systems; an upper cover is arranged at the top of the shell; a feeding hole is formed in the middle of the upper cover; and the bottom of the shell is lower than the discharge valve and is provided with a discharge port.

Description

Technical Field

[0001] The utility model relates to the technical field of batching weighing equipment, in particular to a batching scale without soft connection. Background Art

[0002] In the grain processing process, different raw materials are needed. Each raw material is mixed according to a certain weight ratio. When mixing the ingredients, a batching scale is needed to weigh the ingredients. The batching scale currently used in China has a weighing sensor supporting the weighing bucket. The weighing sensor measures the weight of the material in the weighing bucket according to the detected pressure. The upper and lower parts of the weighing bucket are directly connected to the external device (the upper part is the feeding device, and the lower part is the receiving device) through a soft connection. On the one hand, it is to prevent dust from entering the air and polluting the environment. On the other hand, due to the small stress of the soft connection, the mechanical vibration of the external device can be reduced and transmitted to the weighing bucket, thereby improving the accuracy and stability of the weighing.

[0003] For example, a Chinese utility model patent (publication number: CN201266110Y) discloses a bucket-type electronic batching scale, which consists of a metering hopper, an electronic sensor, a metal frame, an elastic support, a load-bearing bracket, a metal cover, a feed port, a discharge automatic control valve, a discharge port, a feed port soft connection, a discharge port soft connection, an air outlet, and a connecting plate; a connecting plate is welded on the outside of the metering hopper, and the connecting plate is placed on three evenly distributed electronic sensors; a feed port soft connection is installed between the feed port and the metering hopper, two automatic control valves are installed between the metering hopper and the discharge port, and a discharge port soft connection is installed between the two automatic control valves, and the soft connection is made of cylindrical soft rubber. The patent sets soft connections at both the upper and lower parts of the batching scale, eliminating the interference of the feeding device on the electronic batching scale and the material receiving device on the lower part to the electronic batching scale, which is conducive to improving the metering accuracy of the electronic batching scale.

[0004] For another example, a Chinese utility model patent (publication number: CN217818981U) discloses a material and granular double soft connection batching scale, including a weighing bucket arranged on a bracket, a load sensor arranged between the bracket and the weighing bucket, a shock absorber arranged between the load sensor and the bracket, a discharge port arranged at the bottom of the weighing bucket, a first valve and a second valve arranged at the discharge port in sequence, a soft connection device arranged between the first valve and the second valve, and the second valve fixedly arranged on the supporting device. The patent arranges a soft connection at the bottom of the batching scale, and through the shock absorber and the soft connection device, the second valve fixedly arranged on the supporting device and the bracket are kept isolated from the weighing bucket, which is conducive to the load sensor to achieve higher measurement accuracy.

[0005] However, batching scales with soft connections also have the following disadvantages: 1. The soft connections need to be replaced frequently, which results in high labor costs; 2. Dust is easily adsorbed on the soft connections. After the dust absorbs moisture, the soft connections become hard, which can cause inaccurate sensor weighing; 3. Dust is easy to escape from the soft connections, causing more dust to the environment.

[0006] Therefore, it is necessary to improve the existing batching scale and design a batching scale without soft connection. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and provide a batching scale without soft connection. The batching scale does not need to be provided with soft connections to avoid frequent replacement of soft connections, save labor costs, and can improve the accuracy and stability of weighing, while reducing dust pollution to the environment.

[0008] The technical solution provided by the utility model is:

[0009] A batching scale without flexible connection, including a weighing bucket with a discharge valve installed at the bottom; characterized in that it also includes a shell arranged on the outer periphery of the weighing bucket, a support fixed on the shell, and a plurality of weighing systems installed on the support and weighing the weighing bucket; the weighing bucket is suspended on the plurality of weighing systems; an upper cover is arranged on the top of the shell; a feed port is opened in the middle of the upper cover; the bottom of the shell is lower than the discharge valve and is opened with a discharge port.

[0010] The weighing system includes an upper joint, a weighing sensor and a lower joint which are connected in sequence from top to bottom; the upper joint is hinged to a support; the lower joint is fixedly connected to a weighing bucket; the upper joint and the weighing sensor as well as the lower joint and the weighing sensor are hinged, and the hinge axis between the upper joint and the support is perpendicular to the hinge axis between the upper joint and the weighing sensor; the hinge axis between the upper joint and the weighing sensor is parallel to the hinge axis between the lower joint and the weighing sensor.

[0011] A plurality of calibration plates are evenly arranged along the circumferential direction at the middle of the outer wall of the scale bucket; calibration holes are opened on the calibration plates.

[0012] The support member is a support plate; the support plate is horizontally fixed on the shell and is flush with the upper cover; the weighing system is located between the shell and the weighing bucket.

[0013] A plurality of sensor dustproof chambers are fixed on the inner wall of the shell to seal each weighing system; each weighing sensor is installed in each sensor dustproof chamber respectively; a through hole is provided on the bottom surface of the sensor dustproof chamber; the lower joint passes vertically through the through hole and is fixedly connected to the calibration plate; a sealing ring is provided at the through hole to prevent dust from entering the sensor dustproof chamber.

[0014] The sensor dustproof chamber is provided with a sensor inspection door.

[0015] The support member includes a column vertically fixed on the shell and a support plate horizontally fixed on the column; the support plate is located above the upper cover and is spaced apart from the upper cover; the lower joint passes through the upper cover and is fixedly connected to the upper edge of the weighing bucket.

[0016] The side wall of the shell is provided with a plurality of calibration inspection doors; the calibration inspection doors correspond to the positions of the calibration plates, so as to facilitate operators to hang weights on the calibration holes for calibration.

[0017] The weighing bucket and the outer wall of the shell are respectively provided with air hammers.

[0018] The discharge valve is a pneumatic discharge valve; a dust shield is provided on the pneumatic actuator of the pneumatic discharge valve.

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model is provided with a shell on the outer periphery of the weighing bucket. Since an upper cover is fixed on the top of the shell and the upper cover is located above the weighing bucket, the bottom of the shell is lower than the discharge valve. Therefore, the material in the external feeding device enters the weighing bucket from the feeding port of the upper cover and is sent to the external material receiving device through the discharge port at the bottom of the shell. The upper and lower parts of the weighing bucket do not need to be provided with soft connections and are directly connected to the external device, avoiding the trouble of frequent installation and replacement of soft connections and saving labor costs. At the same time, the shell can also limit the dust in the weighing bucket within the shell, reducing the pollution of the environment caused by the dust.

[0021] 2. The scale bucket is hung on each weighing system, so that the weighing sensor can be stressed more evenly, reducing the error caused by uneven force. In addition, since the soft connection is omitted at the upper and lower parts of the scale bucket, the interference of vibration and friction of external devices on the scale bucket can be effectively reduced, greatly improving the stability and accuracy of weighing.

[0022] 3. In the weighing system, the hinge axis between the upper joint and the support is perpendicular to the hinge axis between the upper joint and the weighing sensor, so that the weighing sensor can perform a small swing with two degrees of freedom, reducing the weighing error caused by vibration of the scale bucket and improving the weighing accuracy.

[0023] 4. The utility model provides two sensor installation methods: ① When the sensor is installed between the housing and the weighing bucket, the sensor is installed in the sensor dustproof chamber on the inner wall of the housing, which can prevent dust from polluting the sensor; ② When the sensor is installed above the weighing bucket, the dust is confined in the housing due to the blocking of the housing and the upper cover, and will not pollute the sensor. Both sensor installation methods can prevent dust from polluting the sensor and ensure the weighing accuracy of the batching scale.

[0024] 5. The utility model has a simple structure and is easy to install. It can be directly improved on the existing batching scale equipment. The transformation cost is low, and the weighing accuracy is higher. It has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of the first embodiment.

[0026] Figure 2 It is a bottom view structural schematic diagram of the first embodiment.

[0027] Figure 3 It is a schematic diagram of the main structure of the weighing system of Example 1.

[0028] Figure 4 This is a schematic diagram of the main structure of the second embodiment.

[0029] Figure 5 This is a bottom view of the structure of the second embodiment.

[0030] Figure Number:

[0031] 1. Scale bucket; 1-1. Calibration scale plate; 1-2. Comparison scale hole; 2. Casing; 2-1. Upper cover; 2-2. Feed inlet; 2-3. Discharge outlet; 2-4. Calibration scale inspection door; 3. Support; 3-1. Support plate; 3-2. Pillar; 4. Weighing system; 4-1. Upper joint; 4-2. Weighing sensor; 4-3. Lower joint; 4-4. Sensor dustproof chamber; 4-5. Sealing ring; 4-6. Sensor inspection door; 4-7. Through hole; 5. Discharge valve; 5-1. Pneumatic actuator; 5-2. Dust shield; 6. Air hammer. DETAILED DESCRIPTION

[0032] The following is a further description with reference to the embodiments shown in the accompanying drawings.

[0033] The current batching scale usually installs soft connections on the upper and lower parts of the weighing bucket 1, wherein the upper soft connection is connected to the external feeding device, and the lower soft connection is connected to the external material receiving device. The design of the soft connection is, on the one hand, to prevent dust from diffusing into the air from the inlet and outlet of the weighing bucket to avoid environmental pollution, and on the other hand, due to the small stress of the soft connection, the degree of mechanical vibration of the external device transmitted to the weighing bucket can be reduced, thereby improving the accuracy and stability of weighing. However, the batching scale using the soft connection also has the following disadvantages: 1. The soft connection needs to be replaced frequently, and the labor cost is high; 2. Dust is easily adsorbed on the soft connection, and after the dust absorbs moisture, the soft connection becomes hard, which will cause the sensor to weigh inaccurately; 3. Dust is easy to escape from the soft connection, causing a large amount of dust to the environment. Therefore, the utility model improves the existing batching scale, omitting the soft connections on the upper and lower parts of the weighing bucket to avoid frequent replacement of the soft connection and reduce the pollution of dust to the environment, and the weighing bucket is suspended and installed to improve the weighing accuracy of the batching scale.

[0034] like Figure 1 , Figure 2 , Figure 4 , Figure 5 The non-flexible-connection batching scale shown includes a weighing bucket 1, a housing 2, a support 3, and several groups (three groups in the figure) of weighing systems 4. A discharge valve 5 is installed at the bottom of the weighing bucket 1 to control and adjust the discharge of materials in the weighing bucket 1; preferably, the discharge valve adopts a pneumatic discharge valve, and the pneumatic actuator 5-1 of the pneumatic discharge valve is provided with a dust shield 5-2 to reduce the interference of dust on the pneumatic actuator 5-1 and extend the service life. Several (six in the figure) calibration plates 1-1 are evenly arranged in the circumferential direction in the middle part of the outer wall of the weighing bucket 1; the calibration hole 1-2 is opened on the calibration plate 1-1. When the batching scale needs to be calibrated, the weight is mounted on the calibration hole 1-2 to calibrate the batching scale.

[0035] The shell 2 is arranged on the periphery of the weighing bucket 1, wherein the top of the shell 2 is horizontally fixed with an upper cover 2-1, the upper cover 2-1 is located above the weighing bucket 1 and is provided with a feed port 2-2, and the bottom of the shell 2 is lower than the discharge valve 5 and is provided with a discharge port 2-3. During operation, the material in the external feeding device (not shown in the figure) enters the weighing bucket 1 from the feed port 2-2 of the upper cover 2-1, and is sent to the external receiving device (not shown in the figure) through the discharge port 2-3 at the bottom of the shell 2. This design makes it unnecessary to set a soft connection between the upper and lower parts of the weighing bucket 1 and the external device (i.e., the external feeding device and the external discharging device) to be directly connected, thus avoiding the trouble of frequently installing and replacing the soft connection and saving labor costs. In addition, the shell 2 and the upper cover 2-1 can limit the dust in the weighing bucket within the shell 2, reducing the pollution caused by the dust to the environment. The side wall of the housing 2 is provided with a plurality of (six in the figure) scale inspection doors 2-4; the scale inspection doors 2-4 correspond to the positions of the scale plate 1-1, so as to facilitate operators to mount weights on the scale plate 1-1 for calibration.

[0036] Preferably, the weighing bucket 1 and the outer wall of the housing 2 are respectively provided with an air hammer 6 so as to strike the material in the weighing bucket 1 to avoid material blockage.

[0037] Each weighing system 4 is fixed to the housing 2 through a support 3 and is used to hang the weighing bucket 1; preferably, each weighing system 4 is evenly distributed along the circumference of the weighing bucket. Figure 3As shown, each weighing system 4 includes an upper joint 4-1, a weighing sensor 4-2 and a lower joint 4-3 which are connected in sequence from top to bottom. The upper joint 4-1 is hinged to the support 3; the lower joint 4-3 is fixedly connected to the weighing bucket 1; the upper joint 4-1 and the weighing sensor 4-2 and the lower joint 4-3 and the weighing sensor 4-2 are both hinged. The hinge axis between the upper joint 4-1 and the support 3 is perpendicular to the hinge axis between the upper joint 4-1 and the weighing sensor 4-2; the hinge axis between the upper joint 4-1 and the weighing sensor 4-2 is parallel to the hinge axis between the lower joint 4-3 and the weighing sensor 4-2. Since the weighing sensor can perform a small swing with two degrees of freedom, it can reduce the weighing error caused by vibration of the weighing bucket and improve the weighing accuracy.

[0038] The weighing bucket 1 is hung on each weighing system 4, so that the weighing sensor 4-2 can be stressed more evenly, reducing the error caused by uneven stress on the weighing bucket 1. In addition, since the soft connection is omitted at the upper and lower parts of the weighing bucket 1, the interference of vibration, friction and the like of external devices on the weighing bucket can be effectively reduced, greatly improving the stability and accuracy of weighing.

[0039] The utility model provides two different installation methods of the weighing system 4:

[0040] Embodiment 1:

[0041] like Figure 1 As shown, the weighing system 4 is arranged between the housing 2 and the weighing bucket 1 .

[0042] Specifically, the support member 3 is a support plate 3-1; the support plate 3-1 is horizontally fixed on the housing 2 and flush with the upper cover 2-1. Due to the blocking of the housing 2 and the upper cover 2-1, dust is confined in the housing. In order to prevent dust from contaminating the weighing sensor 4-2, a plurality of (three in this embodiment) sensor dustproof chambers 4-4 are fixed on the inner wall of the housing 2, and each weighing sensor 4-2 is installed in each sensor dustproof chamber 4-4 one by one.

[0043] A through hole 4-7 is provided on the bottom surface of the sensor dustproof chamber 4-4, and the lower joint 4-3 vertically passes through the through hole 4-7 and is fixedly connected to the calibration plate 1-1; a sealing ring 4-5 is provided at the through hole 4-7 for sealing the sensor dustproof chamber 4-4.

[0044] Preferably, the sensor dustproof chamber 4-4 is provided with a sensor inspection door 4-6 to facilitate maintenance of the weighing sensor 4-2.

[0045] Embodiment 2:

[0046] like Figure 4 As shown, the weighing system 4 is arranged above the weighing bucket 1.

[0047] Specifically, the support member 3 includes a column 3-2 and a support plate 3-1; the column 3-2 is vertically fixed on the housing; the support plate 3-1 is horizontally fixed on the column, and the support plate 3-1 is located above the upper cover 2-1 and is spaced apart from the upper cover 2-1. The lower joint 4-3 passes through the upper cover 2-1 and is fixedly connected to the upper edge of the weighing bucket 1. Due to the obstruction of the housing 2 and the upper cover 2-1, dust is confined in the housing and will not pollute the weighing sensor 4-2.

[0048] The two installation embodiments of the weighing system 4 described above can both prevent dust from contaminating the weighing sensor 4 - 2 and ensure the weighing accuracy of the batching scale.

[0049] When the batching scale of the utility model is working, the material in the external feeding device enters the scale bucket from the feeding port of the upper cover, and is sent to the external material receiving device through the discharge port at the bottom of the shell. The upper and lower parts of the scale bucket are directly connected to the external device without the need for soft connections, thus avoiding the trouble of frequent installation and replacement of soft connections and saving labor costs. At the same time, the shell can also confine the dust in the scale bucket within the shell, thus reducing the pollution caused by the dust to the environment.

[0050] The above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and many variations are possible. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A batching scale without flexible connection, comprising a scale bucket (1) with a discharge valve (5) installed at the bottom; characterized in that: The invention also comprises a shell (2) arranged on the periphery of the weighing bucket (1), a support member (3) fixed on the shell (2), and a plurality of weighing systems (4) installed on the support member (3) and weighing the weighing bucket (1); the weighing bucket (1) is suspended on the plurality of weighing systems (4); an upper cover (2-1) is arranged on the top of the shell (2); a feed port (2-2) is provided in the middle of the upper cover (2-1); and the bottom of the shell (2) is lower than the discharge valve (5) and is provided with a discharge port (2-3).

2. The non-soft-connection batching scale according to claim 1, characterized in that: The weighing system (4) comprises an upper joint (4-1), a weighing sensor (4-2) and a lower joint (4-3) which are connected in sequence from top to bottom; the upper joint (4-1) is hinged to the support member (3); the lower joint (4-3) is fixedly connected to the weighing bucket (1); the upper joint (4-1) and the weighing sensor (4-2) as well as the lower joint (4-3) and the weighing sensor (4-2) are hinged, and the hinge axis between the upper joint (4-1) and the support member (3) is perpendicular to the hinge axis between the upper joint (4-1) and the weighing sensor (4-2); the hinge axis between the upper joint (4-1) and the weighing sensor (4-2) is parallel to the hinge axis between the lower joint (4-3) and the weighing sensor (4-2).

3. The non-soft-connection batching scale according to claim 2, characterized in that: A plurality of calibration plates (1-1) are evenly arranged along the circumferential direction in the middle of the outer wall of the scale bucket (1); and calibration holes (1-2) are provided on the calibration plates.

4. The non-soft-connection batching scale according to claim 3, characterized in that: The support member (3) is a support plate (3-1); the support plate (3-1) is horizontally fixed on the outer shell (2) and is flush with the upper cover (2-1); and the weighing system (4) is located between the outer shell (2) and the weighing bucket (1).

5. The non-soft-connection batching scale according to claim 4, characterized in that: A plurality of sensor dustproof chambers (4-4) are fixed on the inner wall of the housing (2) so as to seal each weighing system (4); each weighing sensor (4-2) is installed in each sensor dustproof chamber (4-4); a through hole (4-7) is provided on the bottom surface of the sensor dustproof chamber (4-4); the lower joint (4-3) vertically passes through the through hole (4-7) and is fixedly connected to the calibration plate (1-1); a sealing ring (4-5) is provided at the through hole (4-7) to prevent dust from entering the sensor dustproof chamber (4-4).

6. The batching scale without soft connection according to claim 5, characterized in that: The sensor dustproof chamber (4-4) is provided with a sensor inspection door (4-6).

7. The non-soft-connection batching scale according to claim 3, characterized in that: The support member (3) comprises a column (3-2) vertically fixed on the outer shell and a support plate (3-1) horizontally fixed on the column (3-2); the support plate (3-1) is located above the upper cover (2-1) and is spaced apart from the upper cover; the lower joint (4-3) passes through the upper cover (2-1) and is fixedly connected to the upper edge of the weighing bucket (1).

8. The non-soft-connection batching scale according to any one of claims 3 to 7, characterized in that: The side wall of the housing (2) is provided with a plurality of scale inspection doors (2-4); the scale inspection doors (2-4) correspond to the positions of the scale plate (1-1) so as to facilitate operators to hang weights on the scale holes (1-2) for scale calibration.

9. The non-soft-connection batching scale according to claim 8, characterized in that: The weighing bucket and the outer wall of the shell are respectively provided with air hammers (6).

10. The batching scale without soft connection according to claim 9, characterized in that: The discharge valve (5) is a pneumatic discharge valve; a dust shield (5-2) is provided on the pneumatic actuator (5-1) of the pneumatic discharge valve.

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