Valve device and stirring system

Abstract

This utility model relates to the technical field of mixing equipment, and discloses a valve device and a mixing system. The valve device includes a valve body, a transition hopper, and a flap gate. The valve body is detachably connected between the conveying pipe and the mixing host. The transition hopper is detachably disposed within the valve body. The feed end of the transition hopper connects to the discharge end of the conveying pipe via the valve body feed end. The flap gate is movably disposed within the valve body and is configured to switch between a closed position (closing the discharge end of the transition hopper) and an open position (opening the discharge end of the transition hopper). The detachable connection of the valve body between the conveying pipe and the mixing host improves the maintenance or replacement efficiency of the valve device and ensures material conveying efficiency. The connection between the transition hopper and the discharge end of the conveying pipe allows material in the conveying pipe to directly enter the transition hopper. The transition hopper and valve body are easily disassembled, improving the maintenance and replacement efficiency of the valve device. The flap gate controls the addition of material to the mixing host.

Description

Technical Field

[0001] This utility model relates to the field of mixing equipment technology, specifically to a valve device and a mixing system. Background Technology

[0002] Steel fibers, as a high-performance building material, have advantages such as high strength and durability. Adding steel fibers to concrete can effectively inhibit the formation and development of micro-cracks inside the concrete, and improve the tensile strength, flexural strength, toughness and impact strength of the concrete.

[0003] The existing steel fiber mixing system includes a feeding device, a conveying pipe, a valve device, and a mixing host. The conveying pipe connects the feeding device and the mixing host, and the valve device is located inside the conveying pipe to control the conveying of materials within the conveying pipe.

[0004] However, since the valve device of the steel fiber mixing system is located inside the conveying pipe, when the valve device is damaged and needs to be repaired or replaced during the steel fiber conveying process, the conveying pipe with the valve device installed needs to be disassembled, resulting in low efficiency of valve device repair or replacement, which in turn affects the conveying efficiency. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of low maintenance or replacement efficiency of valve devices in existing steel fiber dispersion devices, which easily affects the steel fiber conveying efficiency. This invention provides a valve device and a mixing system that have the technical effect of high maintenance and replacement efficiency and guaranteed material conveying efficiency.

[0006] To achieve the above objectives, this utility model provides a valve device comprising: a valve body detachably connected between a conveying pipe and a mixing host; a transition hopper detachably disposed within the valve body, wherein the feed end of the transition hopper is connected to the discharge end of the conveying pipe via the feed end of the valve body; and a flap gate movably disposed within the valve body and configured to switch between a closed position (closing the discharge end of the transition hopper) and an open position (opening the discharge end of the transition hopper).

[0007] In some embodiments, the valve device further includes a drive mechanism for driving the flap door to switch between the closed position and the open position.

[0008] In some embodiments, the flap door is rotatably disposed within the valve body, and the drive mechanism is used to drive the flap door to rotate between the closed position and the open position.

[0009] In some embodiments, the driving mechanism includes: a rotating shaft rotatably connected to the valve body and disposed outside the transition hopper, the rotating shaft being fixedly connected to the flap door; and a driving member for driving the rotating shaft to rotate so as to cause the flap door to rotate between the closed position and the open position.

[0010] In some embodiments, the end face of the discharge end of the transition hopper is set at an acute angle to the axial direction of the transition hopper.

[0011] In some embodiments, the rotating shaft is fixedly connected to the side of the flap gate near the feed end of the transition hopper.

[0012] In some embodiments, the drive mechanism further includes a torque arm, one end of which is rotatably connected to the output end of the drive member, and the other end of which is fixedly connected to the rotating shaft.

[0013] In some embodiments, the flap door is detachably connected to the rotating shaft.

[0014] In some embodiments, the valve device further includes a seal disposed at the discharge end of the transition hopper and capable of abutting against the flap gate; and / or both the transition hopper and the flap gate are made of stainless steel.

[0015] The second aspect of this utility model provides a mixing system, including a feeding device, a conveying pipe, a mixing host, and a valve device as described in any of the above embodiments, wherein the conveying pipe is connected between the feeding device and the mixing host.

[0016] Through the above technical solution, the valve body is detachably connected between the conveying pipe and the mixing host, realizing the disassembly and installation of the valve device with the conveying pipe and the mixing host, improving the disassembly and assembly efficiency of the valve device, and thus improving the maintenance or replacement efficiency of the valve device, ensuring material conveying efficiency; since the feed end of the transition hopper is connected to the discharge end of the conveying pipe, the material in the conveying pipe will directly enter the transition hopper without contacting the valve body, avoiding damage to the valve body. The detachable connection between the transition hopper and the valve body allows the transition hopper to be easily removed from the valve body, improving the replacement and maintenance efficiency of the transition hopper, and thus improving the maintenance and replacement efficiency of the valve device; the switching setting of the flap door between the closed and open positions can control the addition of material in the mixing host, thereby improving the accuracy of material addition in the mixing host. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the valve device when the flap door is in the closed position as disclosed in this utility model;

[0018] Figure 2This is a schematic diagram of the valve device when the flap door is in the open position as disclosed in this utility model;

[0019] Figure 3 This is a schematic diagram of the transition bucket of the valve device disclosed in this utility model;

[0020] Figure 4 This is a side view of the valve device when the flap door is in the closed position as disclosed in this utility model;

[0021] Figure 5 This is a top view of the valve device when the flap door is in the closed position as disclosed in this utility model;

[0022] Figure 6 yes Figure 1 A partial sectional view at point AA in the middle;

[0023] Figure 7 yes Figure 4 A partial sectional view at point BB; and

[0024] Figure 8 This is a schematic diagram of the stirring system disclosed in this utility model.

[0025] Explanation of reference numerals in the attached figures

[0026] 1. Valve body; 11. Second flange; 12. Valve body feed end; 13. Valve body discharge end; 2. Transition hopper; 21. First flange; 22. Transition hopper feed end; 23. Transition hopper discharge end; 3. Flip door; 4. Drive mechanism; 41. Rotating shaft; 42. Drive component; 43. Torque arm; 44. Bearing; 5. Conveying pipe; 6. Observation door; 61. Handle; 7. Fixed seat; 8. Feeding device; 9. Mixing host. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0028] In this utility model, unless otherwise stated, "feed end" and "discharge end" generally refer to the feed end and discharge end of the component along the material conveying direction.

[0029] See Figures 1-8This utility model provides a valve device, which includes a valve body 1, a transition hopper 2, and a flap gate 3. The valve body 1 is detachably connected between a conveying pipe 5 and a mixing host 9. The transition hopper 2 is detachably disposed within the valve body 1. The feed inlet 22 of the transition hopper 2 is connected to the discharge end of the conveying pipe 5 via the feed inlet 12 of the valve body 1. The flap gate 3 is movably disposed within the valve body 1 and is configured to close the discharge end 23 of the transition hopper 2 (e.g., ...). Figure 1 The location of the central flap gate 3) and the opening position of the discharge end 23 of the transition hopper (e.g.) Figure 2 Switch between the positions of the central flip door 3 and the other side.

[0030] The valve body 1 is detachably connected between the conveying pipe 5 and the mixing host 9, enabling the valve device to be disassembled and installed with the conveying pipe 5 and the mixing host 9, improving the disassembly and assembly efficiency of the valve device, and thus improving the maintenance or replacement efficiency of the valve device, ensuring the material conveying efficiency. Since the feed end 22 of the transition hopper is connected to the discharge end of the conveying pipe 5, the material in the conveying pipe 5 will directly enter the transition hopper 2 without contacting the valve body 1, avoiding damage to the valve body 1. The transition hopper 2 is detachably connected to the valve body 1, allowing the transition hopper 2 to be easily removed from the valve body 1, improving the replacement and maintenance efficiency of the transition hopper 2, and thus improving the maintenance and replacement efficiency of the valve device. The switching setting of the flap door 3 between the closed and open positions can control the addition of material in the mixing host 9, thereby improving the accuracy of material addition in the mixing host 9.

[0031] See Figure 1 , Figure 2 and Figure 5 The valve body 1 is rectangular and hollow inside along the material conveying direction; the transition hopper 2 is cylindrical and hollow inside along the material conveying direction, the outer diameter of the transition hopper 2 is smaller than the inner diameter of the valve body 1, and the transition hopper 2 is located inside the valve body 1.

[0032] The working process of the valve device of this utility model is as follows: when it is necessary to add material to the mixing host 9, the flap door 3 switches from the closed position to the open position to open the discharge end 23 of the transition hopper, and the material in the conveying pipe 5 will be conveyed to the mixing host 9 through the transition hopper 2; when it is necessary to stop adding material to the mixing host 9, the flap door 3 switches from the open position to the closed position to close the discharge end 23 of the transition hopper, and the material in the conveying pipe 5 stops entering the mixing host 9. The addition of material can be controlled by the flap door 3.

[0033] See Figure 1 and Figure 2To enable the flap door 3 to switch between the closed and open positions, the valve device also includes a drive mechanism 4, which is used to drive the flap door 3 in the closed position (e.g., ...). Figure 1 The location of the middle flip door 3 and its opening position (e.g.) Figure 2 The position of the central flap door 3 can be switched between different locations. The drive mechanism 4 can open and close the valve device, thereby realizing the conveying and stopping of material conveying, and meeting the material addition requirements of the mixing host 9.

[0034] In some embodiments, the flap gate 3 is rotatably disposed within the valve body 1, and the drive mechanism 4 is used to drive the flap gate 3 to rotate between a closed position and an open position. The drive mechanism 4 drives the flap gate 3 to rotate, thereby enabling the flap gate 3 to open or close the discharge end 23 of the transition hopper, thereby realizing the conveying or stopping of material conveying.

[0035] To ensure the accuracy of opening and closing of the flap gate 3, the valve device also includes a sensor. The sensor is electrically connected to the drive mechanism 4 and can sense the material conveying status within the transition hopper 2. When the sensor detects material conveying above the flap gate 3, the drive mechanism 4, which is electrically connected to the sensor, receives a signal and drives the flap gate 3 to open the discharge end 23 of the transition hopper, preventing material from colliding with the flap gate 3 and causing damage. When the sensor detects that the material above the flap gate 3 has stopped conveying, the drive mechanism 4 drives the flap gate 3 to close the discharge end 23 of the transition hopper. The sensor improves the automation level of the valve device and enhances the accuracy of opening and closing the flap gate 3.

[0036] To enable a detachable connection between the feed pipe 5 and the valve device, the valve device further includes a first connecting structure for detachably connecting the feed pipe 5 to the valve body 1. This first connecting structure allows the valve device to be installed and removed from the feed pipe 5, improving the efficiency of assembly and disassembly.

[0037] See Figure 1 and Figure 2 In some embodiments, the first connecting structure includes a connector, a first flange 21 disposed on the outside of the feed end 22 of the transition hopper, and a second flange 11 disposed on the outside of the feed end 12 of the valve body. The third flange, the first flange 21, and the second flange 11 on the outside of the discharge end of the conveying pipe 5 are arranged sequentially from top to bottom and are detachably connected by the connector. When the transition hopper 2 needs to be replaced or repaired, the connector is disassembled, thereby removing the valve device from the conveying pipe 5. At this time, the transition hopper 2 is attached to the valve body 1. The transition hopper 2 can be removed from the valve body 1, thus realizing the replacement of the transition hopper 2, which has high replacement efficiency.

[0038] In some embodiments, the connector includes a bolt and a nut. The bolt passes through the connection hole of the third flange, the connection hole of the first flange 21, and the connection hole of the second flange 11, and is threaded onto the nut.

[0039] In order to achieve a detachable connection between the valve device and the mixing host 9, the valve device also includes a second connection structure, which is used to detachably connect the mixing host 9 and the valve body 1.

[0040] In some embodiments, the second connection structure includes a connector and a fourth flange disposed on the valve body discharge end 13 of the valve body 1. The connector passes through the connection hole of the fourth flange and is detachably connected to the mixing host 1.

[0041] See Figure 1 , Figure 2 , Figure 4 and Figure 5 To enable the flap gate 3 to close or open the discharge end 23 of the transition hopper 2, the drive mechanism 4 includes a rotating shaft 41 and a drive component 42. The rotating shaft 41 is rotatably connected to the valve body 1 and is located outside the transition hopper 2. The rotating shaft 41 is fixedly connected to the flap gate 3. The drive component 42 drives the rotating shaft 41 to rotate, thereby causing the flap gate 3 to rotate between the closed and open positions. Driven by the drive component 42, the rotating shaft 41, rotatably connected to the valve body 1, can drive the flap gate 3 to rotate relative to each other, thereby switching the flap gate 3 between the closed and open positions. By placing the rotating shaft 41 outside the transition hopper 2, collisions between the rotating shaft 41 and the material during conveying can be avoided, ensuring the service life of the rotating shaft 41 and improving the sealing performance of the flap gate 3 in closing the transition hopper 2. The drive component 42 can improve the automation and accuracy of the rotation of the rotating shaft 41.

[0042] In some embodiments, the drive mechanism 4 further includes a torque arm 43, one end of which is rotatably connected to the output end of the drive member 42, and the other end of which is fixedly connected to the rotating shaft 41. The torque arm 43 connects the drive member 42 and the rotating shaft 41, thereby realizing the transmission of force, so that the drive member 42 can drive the rotating shaft 41 to rotate through the torque arm 43; the fixed connection between the torque arm 43 and the rotating shaft 41 can ensure the synchronous rotation of the torque arm 43 and the rotating shaft 41.

[0043] In some embodiments, the output end of the drive member 42 is rotatably connected to the torque arm 43 via a fastener. The fastener can be a pin or a shaft.

[0044] It should be noted that the fixed connection between the torque arm 43 and the rotating shaft 41 means that the rotating shaft 41 can rotate synchronously with the torque arm 43, and the connection between the torque arm 43 and the rotating shaft 41 can be a detachable connection.

[0045] In order to achieve a fixed connection between the torque arm 43 and the rotating shaft 41, the torque arm 43 is fixed to the rotating shaft 41 by a key.

[0046] See Figures 1-3 To reduce the rotational stroke of the flap gate 3, the end face of the discharge end 23 of the transition hopper is set at an acute angle to the axis of the transition hopper 2. This setting can reduce the rotational stroke of the flap gate 3 when switching between the closed and open positions, reduce the energy loss of the drive mechanism 4, and improve the switching efficiency of the flap gate 3 when switching between the closed and open positions.

[0047] It should be noted that, see Figure 3 It can be seen that the end face of the discharge end 23 of the transition hopper is inclined relative to the axial direction of the transition hopper 2 and has an inclination angle, that is, the end face of the discharge end 23 of the transition hopper and the end face of the feed end 22 of the transition hopper are set at an acute angle.

[0048] In some embodiments, the drive unit 42 can be a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. The drive unit 42 can realize automated control of the opening or closing of the flap door 3, and has high drive adaptability.

[0049] See Figure 3 In some embodiments, the angle between the discharge end 23 of the transition hopper and the axial direction of the transition hopper 2 is 45°. This arrangement ensures that the rotation angle of the flap door 3 when switching between the closed and open positions is 45°. When the flap door 3 switches from the closed position to the open position, the drive member 42 drives the rotating shaft 41 to rotate 45°, causing the flap door 3 to move from a state of contact with the transition hopper 2 (e.g., ...). Figure 1 Adjust the position of the middle flip door 3 to a vertical position (e.g., Figure 2 The position of the flap gate 3 enables the material conveying process to be unobstructed, ensuring smooth material conveying; when the material conveying stops, the flap gate 3 is adjusted from a vertical position to a position that fits against the discharge end 23 of the transition hopper.

[0050] See Figure 1 and Figure 2 To reduce the travel of the flap door 3, the rotating shaft 41 is fixedly connected to the side of the flap door 3 near the feed end 22 of the transition hopper. Since the discharge end 23 of the transition hopper is set at an angle to the axis of the transition hopper 2, that is, the discharge end 23 of the transition hopper is inclined, when the flap door 3 is in the closed position, the flap door 3 is set at an angle. The rotating shaft 41 is fixedly connected to the side of the flap door 3 near the feed end 22 of the transition hopper, so that the rotating shaft 41 rotates the angle between the discharge end 23 of the transition hopper and the axis, thereby realizing the switching between the closed position and the open position of the flap door 3, reducing the rotation angle of the flap door 3 and the rotating shaft 41, and reducing the driving stroke of the drive component 42.

[0051] It should be noted that the fixed connection between the rotating shaft 41 and the flip door 3 means that the rotating shaft 41 can drive the flip door 3 to rotate, and the connection between the rotating shaft 41 and the flip door 3 can be a detachable connection.

[0052] To ensure the strength of the flap door 3, a corner section is provided at the end of the flap door 3 away from the rotation shaft 41.

[0053] join Figures 4 to 6 In some embodiments, the rotating shaft 41 passes through the valve body 1 and is rotatably connected to the valve body 1 via a bearing 44. The bearing 44 can fix the rotating shaft 41 to the valve body 1, reduce the rotational friction of the rotating shaft 41, and improve the service life of the rotating shaft 41.

[0054] In order to enable the drive mechanism 4 to drive the flap door 3 to rotate, one end of the flap door 3 is hinged to the discharge end 23 of the transition hopper, and the drive component 42 can drive the flap door 3 to rotate relative to the transition hopper 2.

[0055] In some embodiments, the drive mechanism 4 can drive the flap door 3 to move along the extension direction of the flap door 3. The drive mechanism 4 is a telescopic member, which is disposed inside the valve body 1. The output end of the telescopic member is fixedly connected to the flap door 3. The output end of the telescopic member extends and retracts along the length direction of the flap door 3, driving the flap door 3 to move, thereby realizing the closing or opening of the discharge end 23 of the transition hopper.

[0056] See Figure 1 , Figure 2 and Figure 5 In some embodiments, the valve device further includes a fixing seat 7 disposed outside the valve body 1, and the drive member 42 is disposed on the fixing seat 7. The fixing seat 7 can fix the drive member 42 outside the valve body 1, ensuring the stability and firmness of the relative position of the drive member 42.

[0057] In some embodiments, the drive member 42 is fixed to the mounting base 7 by fasteners. The fasteners can be pins or shafts.

[0058] join Figure 7 To facilitate the assembly and disassembly of the flap door 3, the flap door 3 is detachably connected to the rotating shaft 41. This detachable connection allows the flap door 3 to be installed or removed from the rotating shaft 41, thereby enabling the replacement or repair of the flap door 3, improving the efficiency of maintenance and replacement, and ensuring the material conveying efficiency of the material conveying pipe 5.

[0059] It should be noted that the detachable connection between the flip door 3 and the rotating shaft 41 means that the flip door 3 can be installed or removed from the rotating shaft 41, thereby enabling the repair or replacement of the flip door 3.

[0060] To achieve a detachable connection between the flip door 3 and the rotating shaft 41, [the following is required:] [Participating in...] Figure 7 The flip door 3 is connected to the rotating shaft 41 by fasteners.

[0061] In some embodiments, the fastener is a bolt. The bolt passes through the flap door 3 and is threadedly connected to the rotating shaft 41.

[0062] To ensure the airtight seal of the flap gate 3 over the discharge end 23 of the transition hopper, the valve device also includes a sealing element. This sealing element is located at the discharge end 23 of the transition hopper and abuts against the flap gate 3. The cooperation between the sealing element and the flap gate 3 seals the discharge end 23 of the transition hopper, ensuring a tight fit between the flap gate 3 and the discharge end 23 of the transition hopper. This prevents dust leakage from the valve device and avoids dust generation. When the flap gate 3 is in the closed position, the dust leakage rate can be reduced by more than 99%.

[0063] It should be noted that the sealing element is installed at the discharge end 23 of the transition hopper. When the flap door 3 is in the closed position, the flap door 3 abuts against the sealing element at the discharge end 23 of the transition hopper, thereby ensuring the sealing performance of the flap door 3 and the discharge end 23 of the transition hopper.

[0064] In some embodiments, the seal is a sealing ring disposed at the discharge end 23 of the transition hopper.

[0065] In some embodiments, the material is steel fiber.

[0066] To prevent steel fibers from adhering to the flap gate 3 due to frictional static electricity during conveying, and to avoid steel fiber accumulation at the transition hopper 2 and flap gate 3, both the transition hopper 2 and flap gate 3 are made of stainless steel. The stainless steel construction of the transition hopper 2 and flap gate 3 prevents steel fibers from accumulating at the valve device.

[0067] See Figure 1 , Figure 2 and Figure 4 To facilitate cleaning of the valve device, an opening is provided on the side of the valve body 1, and the valve device also includes an observation door 6 that closes the opening. Operators can observe and maintain the valve device through the opening, so as to clean the steel fibers adhering to the inner wall of the valve body 1 and the valve device, ensuring the cleanliness of the valve device; the observation door 6 seals the opening to prevent the steel fibers inside the valve device from being discharged through the opening.

[0068] In some embodiments, the opening is located on the lower side of the valve body 1. This arrangement ensures that operators can observe and maintain the condition of the valve body 1.

[0069] To allow the opening and closing of the opening, bolts pass through the connection hole of the observation door 6 and are threaded onto the valve body 1. The bolt arrangement enables a detachable connection between the observation door 6 and the valve body 1.

[0070] To facilitate the opening of the observation door 6, a handle 61 is also provided on the observation door 6. The handle 61 makes it easier for the operator to operate the observation door 6 and improves the convenience of operation.

[0071] The valve body 1, transition bucket 2, flap door 3, rotating shaft 41, driving component 42, observation door 6, etc. of the valve device disclosed in this utility model are all detachable structures, making the replacement of the valve device convenient and quick.

[0072] This utility model also discloses a mixing system, which includes a feeding device 8, a conveying pipe 5, a mixing host 9, and a valve device according to any of the above embodiments. The conveying pipe 5 is connected between the feeding device 8 and the mixing host 9. Steel fibers in the feeding device 8 are conveyed to the mixing host 9 through the conveying pipe 5, thereby mixing the steel fibers and concrete to increase the tensile strength, crack resistance, and toughness of the concrete. The valve device can control the addition of steel fibers in the conveying pipe 5, thereby improving the automation level of the mixing system.

[0073] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. This includes combining various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A valve device, characterized in that, The valve device includes: Valve body (1), which is detachably connected between the conveying pipe (5) and the mixing host (9); A transition hopper (2) is detachably disposed within the valve body (1). The feed inlet (22) of the transition hopper (2) is connected to the discharge end of the conveying pipe (5) via the feed inlet (12) of the valve body (1). A flap door (3) is movably disposed within the valve body (1) and configured to switch between a closed position of the transition hopper discharge end (23) of the transition hopper (2) and an open position of the transition hopper discharge end (23).

2. The valve device according to claim 1, characterized in that, The valve device also includes a drive mechanism (4) for driving the flap door (3) to switch between the closed position and the open position.

3. The valve device according to claim 2, characterized in that, The flap door (3) is rotatably disposed inside the valve body (1), and the drive mechanism (4) is used to drive the flap door (3) to rotate between the closed position and the open position.

4. The valve device according to claim 3, characterized in that, The drive mechanism (4) includes: A rotating shaft (41) is rotatably connected to the valve body (1) and disposed outside the transition hopper (2); the rotating shaft (41) is fixedly connected to the flap door (3); and A drive unit (42) is used to drive the rotating shaft (41) to rotate so as to drive the flap door (3) to rotate between the closed position and the open position.

5. The valve device according to claim 4, characterized in that, The end face of the discharge end (23) of the transition hopper is set at an acute angle to the axial direction of the transition hopper (2).

6. The valve device according to claim 5, characterized in that, The rotating shaft (41) is fixedly connected to the side of the flap gate (3) near the feed end (22) of the transition hopper.

7. The valve device according to claim 4, characterized in that, The drive mechanism (4) further includes a torque arm (43), one end of which is rotatably connected to the output end of the drive member (42), and the other end of which is fixedly connected to the rotating shaft (41).

8. The valve device according to claim 4, characterized in that, The flap door (3) is detachably connected to the rotating shaft (41).

9. The valve device according to any one of claims 1-8, characterized in that, The valve device further includes a seal disposed at the discharge end (23) of the transition hopper and capable of abutting against the flap gate (3); and / or Both the transition bucket (2) and the flap door (3) are made of stainless steel.

10. A stirring system, characterized in that, It includes a feeding device (8), a conveying pipe (5), a mixing host (9), and a valve device according to any one of claims 1-9, wherein the conveying pipe (5) is connected between the feeding device (8) and the mixing host (9).

Images