Negative-pressure powder feeding bin

Abstract

The utility model relates to the technical field of custard sauce production, and provides a negative pressure powder feeding bin which comprises a bin body, a discharging pipe, negative pressure equipment and a butterfly valve. A discharging port is formed in the bottom of the bin body, the middle of the discharging pipe is connected to the bin body, an inner cavity of the discharging pipe is communicated with the discharging port, and one end of the discharging pipe is used for being connected with the negative pressure equipment; a pressure sensor is arranged on the inner wall of the discharging pipe, and the pressure sensor is used for acquiring a pressure signal of powder in the discharging pipe to the pipe wall of the discharging pipe and sending the pressure signal to a control terminal; the butterfly valve is connected to the end, away from the negative pressure equipment, of the discharging pipe, the butterfly valve is electrically connected to the control terminal, and the control terminal controls opening and closing of the butterfly valve according to the pressure signal. The powder discharging device has the effect of reducing powder residues in the discharging pipe.

Description

Technical Field

[0001] The present application relates to the field of custard sauce production technology, and in particular to a negative pressure powder feeding bin. Background Art

[0002] In the production line of custard sauce, raw materials are supplied through a negative pressure powder inlet silo. The negative pressure powder inlet silo includes a silo body, a discharge pipe and a negative pressure device. There is a discharge port at the bottom of the silo body. One end of the discharge pipe is connected to the inner cavity of the silo body through the discharge port, and the other end is connected to the negative pressure device.

[0003] Negative pressure equipment is used to quickly extract the raw materials in the silo from the discharge port for efficient feeding. However, when the raw materials are reduced, the powder in the discharge pipe is difficult to be sucked out completely. Utility Model Content

[0004] In order to reduce the powder residue in the discharge pipe, the present application provides a negative pressure powder inlet silo.

[0005] The negative pressure powder feeding silo provided in this application adopts the following technical solution:

[0006] A negative pressure powder feeding silo comprises a silo body, a discharge pipe, a negative pressure device and a butterfly valve; the bottom of the silo body is provided with a discharge port, the middle part of the discharge pipe is connected to the silo body and the inner cavity is communicated with the discharge port, and one end of the discharge pipe is used to be connected to the negative pressure device; the inner wall of the discharge pipe is provided with a pressure sensor, and the pressure sensor is used to obtain the pressure signal of the powder in the discharge pipe on the pipe wall of the discharge pipe and send the pressure signal to the control terminal; the butterfly valve is connected to the end of the discharge pipe away from the negative pressure device, the butterfly valve is electrically connected to the control terminal, and the control terminal controls the opening and closing of the butterfly valve according to the pressure signal.

[0007] By adopting the above technical solution, a pressure sensor is used to obtain the pressure signal of the powder in the discharge pipe against the abutting wall of the discharge pipe to detect the amount of powder in the discharge pipe; the pressure sensor sends the pressure signal to the control terminal. When the amount of powder is small, the control terminal controls the butterfly valve to open, and the outside air enters the discharge pipe from the end of the discharge pipe away from the negative pressure device. The airflow drives the powder remaining in the discharge pipe to move, so as to reduce the residual powder in the discharge pipe and improve the feeding effect.

[0008] Optionally, a filter is provided at one end of the discharge pipe away from the negative pressure device, and the butterfly valve is located between the negative pressure device and the filter.

[0009] By adopting the above technical solution, the airflow entering the discharge pipe is filtered by the filter, thereby reducing the risk of external impurities being brought into the discharge hanger by the airflow.

[0010] Optionally, the discharge pipe includes a discharge section and a connecting section, the discharge section is used to be connected to the warehouse body and the negative pressure equipment, and the connecting section is used for connection to the butterfly valve.

[0011] Optionally, a connecting assembly is provided at the end of the connecting section, and the connecting section is detachably connected to the discharging section via the connecting assembly.

[0012] By adopting the above technical solution, the maintenance and cleaning of the butterfly valve and the filter screen are facilitated.

[0013] Optionally, the connecting section has a plug-in portion at the end near the discharging section, and the outer wall of the plug-in portion is used to abut against the inner wall of the discharging section; the connecting assembly includes a first half hoop, a second half hoop and a rotating rod, the first half hoop is connected to the end of the connecting section, and the inner wall of the first half hoop is used to abut against the outer wall of the discharging section; one end of the first half hoop is hinged to one end of the second half hoop, and one end of the rotating rod is hinged to the end of the first half hoop away from the second half hoop; the end of the second half hoop away from the first half hoop is provided with a clamping groove, and the clamping groove is used for clamping the end of the rotating rod away from the first half hoop.

[0014] By adopting the above technical solution, when assembling the discharge pipe, the connecting section equipped with the butterfly valve and the filter screen is connected to the discharge section. When connecting, first insert the plug-in part of the connecting section into the end of the connecting section away from the negative pressure equipment, and then rotate the second half hoop relative to the first half hoop so that the second half hoop abuts against the outer wall of the discharge section; then rotate the rotating rod relative to the first half hoop so that the rotating rod is engaged in the groove. The entire disassembly structure is simple to operate and easy to install.

[0015] Optionally, the end of the rotating rod away from the first half hoop has a hand-held portion, and the outer diameter of the hand-held portion is larger than the outer diameter of the rotating rod.

[0016] By adopting the above technical solution, when rotating the rotating rod relative to the first half hoop, the staff holds the handheld portion at the position of the larger outer diameter, thereby improving the operator's operating convenience and comfort.

[0017] Optionally, the clamping portion includes two limiting plates, which are arranged opposite to each other, and the clamping groove is defined between the two limiting plates; limiting protrusions are provided on the opposite surfaces of the two limiting plates, and the lower surface of the limiting protrusions is used to abut against the upper surface of the rotating rod.

[0018] By adopting the above technical solution, the limiting protrusion is used to further limit the rotating rod, thereby improving the connection stability between the rotating rod and the second half hoop.

[0019] Optionally, the rotating rod has a threaded portion, and the rotating rod is movably connected to an abutting screw barrel through the threaded portion, and the abutting screw barrel is used to abut against a side of the limiting plate away from the first half hoop.

[0020] By adopting the above technical solution, after the rotating rod is inserted into the clamping groove, the abutting screw barrel is screwed relative to the rotating rod so that the abutting screw barrel abuts against the limiting piece, thereby further improving the limiting effect of the rotating rod.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By installing a butterfly valve and a pressure sensor in the discharge pipe, when there is less powder remaining in the discharge pipe, the butterfly valve is opened to allow outside air to enter the discharge pipe, driving the small amount of powder remaining in the discharge pipe to move toward the negative pressure equipment, thereby reducing the residual powder in the discharge pipe and improving the feeding effect;

[0023] 2. The discharge pipe consists of a discharge section and a connecting section. The connecting section connected to the butterfly valve and filter screen is detachable from the discharge section to facilitate maintenance of the discharge pipe;

[0024] 3. The connecting assembly includes a first half hoop, a second half hoop and a rotating rod, so that the detachable connection between the connecting section and the discharge section has a simple structure and convenient operation, ensuring the convenience of disassembly and assembly between the connecting section and the discharge section. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a structural diagram for showing the plug-in part.

[0027] Figure 3 It is a structural diagram used to show the connection components.

[0028] Figure 4 It is a schematic diagram for showing the structure of the limiting piece.

[0029] Explanation of the accompanying drawings: 1. Warehouse body; 2. Discharge pipe; 21. Filter screen; 22. Discharge section; 23. Connecting section; 24. Plug-in part; 3. Negative pressure equipment; 4. Butterfly valve; 5. Connecting assembly; 51. First half hoop; 52. Second half hoop; 521. Snap-fit ​​groove; 522. Limiting plate; 523. Limiting protrusion; 53. Rotating rod; 531. Threaded part; 532. Hand-held part; 54. Abutting screw barrel. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The embodiment of the present application discloses a negative pressure powder feeding bin. Figure 1 A negative pressure powder inlet silo includes a silo body 1, a discharge pipe 2, a negative pressure device 3 and a butterfly valve 4.

[0032] The bottom of the silo 1 has a discharge port. The middle of the discharge pipe 2 is connected to the silo 1, and the inner cavity is connected to the discharge port. One end of the discharge pipe 2 is connected to the negative pressure device 3. A pressure sensor is installed on the inner wall of the discharge pipe 2. The pressure sensor is used to obtain the pressure signal of the powder in the discharge pipe 2 on the pipe wall of the discharge pipe 2 and send the pressure signal to the control terminal.

[0033] The butterfly valve 4 is connected to the end of the discharge pipe 2 that is away from the negative pressure device 3. The butterfly valve 4 is electrically connected to the control terminal, which controls the opening and closing of the butterfly valve 4 based on the pressure signal. A pressure sensor is used to obtain the pressure signal of the powder in the discharge pipe 2 against the abutting wall of the discharge pipe 2 to detect the amount of powder in the discharge pipe 2. The pressure sensor sends the pressure signal to the control terminal. When the amount of powder is low, the control terminal controls the butterfly valve 4 to open, allowing outside air to enter the discharge pipe 2 from the end away from the negative pressure device 3. The airflow drives the powder remaining in the discharge pipe 2 to move, thereby reducing the amount of powder remaining in the discharge pipe 2.

[0034] Furthermore, in this embodiment, a filter screen 21 is provided at one end of the discharge pipe 2 away from the negative pressure device 3, and the butterfly valve 4 is located between the negative pressure device 3 and the filter screen 21, thereby utilizing the filter screen 21 to reduce the risk of external impurities being brought into the discharge hook by the airflow.

[0035] Specifically, in this embodiment, the discharge pipe 2 includes a discharge section 22 and a connecting section 23. The discharge section 22 is used to connect to the silo 1 and the negative pressure device 3. The connecting section 23 is used to connect to the butterfly valve 4. A connecting assembly 5 is provided at the end of the connecting section 23 near the discharge section 22. The connecting section 23 is detachably connected to the discharge section 22 via the connecting assembly 5 to facilitate cleaning and maintenance of the discharge pipe 2.

[0036] Reference Figure 1 and Figure 2 The end of the connecting section 23 close to the discharge section 22 has an inserting portion 24 , which is used to be inserted into the discharge section 22 , and the outer wall of the inserting portion 24 is used to abut against the inner wall of the discharge section 22 .

[0037] Reference Figure 3 The connecting assembly 5 includes a first half hoop 51, a second half hoop 52, and a rotating rod 53. The first half hoop 51 is connected to the end of the connecting section 23 near the plug-in portion 24. The inner wall of the first half hoop 51 is used to abut the outer wall of the discharge section 22. One end of the second half hoop 52 is hinged to one end of the first half hoop 51, and the other end is provided with a snap-fit ​​groove 521. One end of the rotating rod 53 is hinged to the end of the first half hoop 51 away from the second half hoop 52, and the other end is snap-fitted with the snap-fit ​​groove 521.

[0038] Reference Figure 3 and Figure 4 Two limiting pieces 522 are provided at the end of the second hoop half 52 away from the first hoop half 51. The two limiting pieces 522 are arranged opposite each other, and a clamping groove 521 is defined between the two limiting pieces 522. Limiting protrusions 523 are provided on the opposing surfaces of the two limiting pieces 522. The lower surfaces of the limiting protrusions 523 are configured to abut against the upper surface of the rotating rod 53. In this embodiment, the limiting protrusions 523 are strip-shaped structures and extend along the width of the limiting pieces 522.

[0039] Furthermore, the rotating rod 53 has a threaded portion 531 , and the rotating rod 53 is movably connected to an abutting screw barrel 54 through the threaded portion 531 . The abutting screw barrel 54 is used to abut against a side of the limiting piece 522 away from the first half hoop 51 .

[0040] Furthermore, the end of the rotating rod 53 away from the first half hoop 51 has a handle portion 532, and the outer diameter of the handle portion 532 is larger than the outer diameter of the rotating rod 53. When rotating the rotating rod 53 relative to the first half hoop 51, the operator holds the handle portion 532 with the larger outer diameter, thereby improving the operator's operating convenience and comfort.

[0041] The implementation principle of a negative pressure powder feeding silo in the embodiment of the present application is as follows: when assembling the negative pressure powder feeding silo, first connect the discharge pipe 2 of the discharge pipe 2 to the bottom of the silo body 1 so that the inner cavity of the discharge pipe 2 is connected to the inner cavity of the silo body 1, and then connect the end of the discharge section 22 away from the silo body 1 to the negative pressure device 3;

[0042] Then, the connecting section 23 equipped with the butterfly valve 4 and the filter screen 21 is connected to the discharge section 22. When connecting, first insert the plug-in part 24 of the connecting section 23 into the end of the connecting section 23 away from the negative pressure device 3, and then rotate the second half hoop 52 relative to the first half hoop 51 so that the second half hoop 52 abuts against the outer wall of the discharge section 22; then rotate the rotating rod 53 relative to the first half hoop 51 so that the rotating rod 53 passes through the limiting protrusion 523 and is inserted into the clamping groove 521 between the two limiting plates 522; finally, screw the abutting screw 54 relative to the rotating rod 53 so that the abutting screw 54 abuts against the side of the limiting plate 522 away from the first half hoop 51.

[0043] During the operation of the negative pressure powder feeding silo, the pressure sensor obtains the pressure signal of the powder in the discharge section 22 and sends the pressure signal to the control terminal; when the amount of powder in the discharge section 22 is small, the control terminal controls the butterfly valve 4 to open, and the outside air enters the discharge section 22 through the filter 21. The airflow drives the powder in the discharge section 22 to move toward the negative pressure device 3 to complete the feeding of the small amount of powder remaining in the discharge section 22, reduce the powder residue in the discharge pipe 2, and improve the feeding effect.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A negative pressure powder feeding silo, characterized by: The invention comprises a silo (1), a discharge pipe (2), a negative pressure device (3) and a butterfly valve (4); the bottom of the silo (1) is provided with a discharge port, the middle part of the discharge pipe (2) is connected to the silo (1) and the inner cavity is communicated with the discharge port, and one end of the discharge pipe (2) is used to be connected to the negative pressure device (3); a pressure sensor is provided on the inner wall of the discharge pipe (2), and the pressure sensor is used to obtain a pressure signal of the powder in the discharge pipe (2) on the wall of the discharge pipe (2) and send the pressure signal to a control terminal; the butterfly valve (4) is connected to one end of the discharge pipe (2) away from the negative pressure device (3), and the butterfly valve (4) is electrically connected to the control terminal, and the control terminal controls the opening and closing of the butterfly valve (4) according to the pressure signal.

2. The negative pressure powder feeding silo according to claim 1, characterized in that: A filter screen (21) is provided at one end of the discharge pipe (2) away from the negative pressure device (3), and the butterfly valve (4) is located between the negative pressure device (3) and the filter screen (21).

3. The negative pressure powder feeding silo according to claim 1, characterized in that: The discharge pipe (2) comprises a discharge section (22) and a connection section (23), wherein the discharge section (22) is used to be connected to the silo (1) and the negative pressure device (3), and the connection section (23) is used to be connected to the butterfly valve (4).

4. The negative pressure powder feeding silo according to claim 3, characterized in that: A connecting assembly (5) is provided at the end of the connecting section (23), and the connecting section (23) is detachably connected to the discharge section (22) via the connecting assembly (5).

5. The negative pressure powder feeding silo according to claim 4, characterized in that: The end of the connecting section (23) close to the discharge section (22) has a plug-in portion (24), and the outer wall of the plug-in portion (24) is used to abut against the inner wall of the discharge section (22); the connecting assembly (5) comprises a first half hoop (51), a second half hoop (52) and a rotating rod (53), the first half hoop (51) is connected to the end of the connecting section (23), and the inner wall of the first half hoop (51) is used to abut against the outer wall of the discharge section (22); one end of the first half hoop (51) is connected to the second half hoop (52), and the rotating rod (53) is connected to the first half hoop (51). One end of the second half hoop (52) is hinged, and one end of the rotating rod (53) is hinged to one end of the first half hoop (51) away from the second half hoop (52); one end of the rotating rod (53) is hinged to one end of the first half hoop (51) away from the second half hoop (52); and a clamping groove (521) is provided at one end of the second half hoop (52) away from the first half hoop (51), and the clamping groove (521) is used for clamping the end of the rotating rod (53) away from the first half hoop (51).

6. The negative pressure powder feeding silo according to claim 5, characterized in that: One end of the rotating rod (53) away from the first half hoop (51) has a hand-held portion (532), and the outer diameter of the hand-held portion (532) is larger than the outer diameter of the rotating rod (53).

7. The negative pressure powder feeding silo according to claim 5, characterized in that: Two limiting pieces (522) are provided at the end of the second half hoop (52) away from the first half hoop (51), and the two limiting pieces (522) are arranged opposite to each other, and the clamping groove (521) is defined between the two limiting pieces (522); limiting protrusions (523) are provided on the opposing surfaces of the two limiting pieces (522), and the lower surfaces of the limiting protrusions (523) are used to abut against the upper surface of the rotating rod (53).

8. The negative pressure powder feeding silo according to claim 7, characterized in that: The rotating rod (53) has a threaded portion (531), and the rotating rod (53) is movably connected to an abutting screw barrel (54) via the threaded portion (531). The abutting screw barrel (54) is used to abut against a side of the limiting piece (522) away from the first half hoop (51).

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