Leakage-proof device and stirring building

Abstract

The utility model discloses a material leakage prevention device and mixing plant, wherein the material leakage prevention device comprises: a communication assembly and a lifting assembly, one end of the communication assembly is communicated with a blanking pipeline of a blanking hopper, the other end of the communication assembly is communicated with a feeding pipeline of a tank car, and the communication between the blanking pipeline and the feeding pipeline is realized through the communication assembly, so that the material leakage prevention device is greatly reduced; and the first connecting sleeve is arranged at one end of the communicating assembly, the lifting assembly can separate or sleeve the first connecting sleeve and the discharging pipeline, automatic mounting of the first connecting sleeve is achieved, and using is more convenient. The utility model is applied to the technical field of concrete production equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete production equipment, in particular to a leakage prevention device and a mixing plant. Background Art

[0002] A mixing plant, also called a concrete mixing plant, is mainly used in concrete mechanical engineering construction such as concrete mixing. During the production and preparation process, various sand and gravel raw materials, powder materials, additives and other raw materials are mixed with water according to a certain mixing ratio to prepare concrete. Finally, the mixing process is usually carried out in the mixing plant, and the mixed materials will fall into the feed inlet of the concrete truck through the hopper at the bottom of the mixing plant. Due to the high height of the mixing plant and the small feed inlet of the concrete truck, during the feeding process, the concrete will splash and is likely to spill onto the top of the body of the concrete truck and the ground. After the feeding is completed, these areas need to be cleaned, which is time-consuming and laborious. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a leakage prevention device, which can reduce leakage, make the feeding more efficient and more convenient to use.

[0004] The utility model also relates to a mixing plant with the above-mentioned leakage prevention device.

[0005] According to the leakage prevention device of the first aspect embodiment of the utility model, it includes:

[0006] A connecting component, including a connecting pipe, a first connecting sleeve arranged at one end of the connecting pipe and a second connecting sleeve arranged at the other end of the connecting pipe. The first connecting sleeve is used to sleeved on the feeding pipe of the hopper, and the second connecting sleeve is used to sleeved on the feeding pipe of the truck;

[0007] A lifting component, including a lifting member that can lift and move along the first direction. The lifting member has a disengaged position and a connected position, and the lifting member is connected to the first connecting sleeve;

[0008] Wherein, the first connecting sleeve is configured as: when the lifting component is in the disengaged position, the first connecting sleeve is separated from the feeding pipe; when the lifting component is in the connected position, the first connecting sleeve is sleeved on the feeding pipe.

[0009] According to the leakage prevention device of the first aspect embodiment of the utility model, it has at least the following beneficial effects: by directly connecting the feeding pipe of the hopper and the feeding pipe of the truck through the first connecting sleeve and the second connecting sleeve of the connecting pipe, the occurrence of leakage is reduced, the feeding is more efficient, and through the lifting component, the automatic docking of the first connecting sleeve and the feeding pipe is realized, making it more convenient to use.

[0010] According to some embodiments of the present utility model, it further includes:

[0011] A cleaning assembly for cleaning the communication pipe, and the cleaning assembly has a cleaning position;

[0012] A rotating assembly includes a rotating member capable of rotating around the first direction. The rotating member is connected to the lifting member and connected to the first connecting sleeve. The rotating member has a material conveying position and a cleaning position;

[0013] Wherein, the first connecting sleeve is configured such that when the rotating member is in the material conveying position, the first connecting sleeve is aligned with the blanking pipe; when the rotating member is in the cleaning position, the first connecting sleeve is located at the cleaning position, and the cleaning assembly cleans the communication pipe.

[0014] According to some embodiments of the present utility model, the lifting assembly further includes a protective shell provided at one end of the lifting member. The rotating assembly further includes a rotation driving source drivingly connected to the rotating member. The rotation driving source is provided inside the protective shell, and the rotating member is located outside the protective shell.

[0015] According to some embodiments of the present utility model, the rotating member is slidably connected to the protective shell along the circumferential direction around the first direction.

[0016] According to some embodiments of the present utility model, the communication assembly further includes a telescopic member and an elastic member. The inner circumferential surface of the first connecting sleeve is provided with a plurality of installation grooves distributed in a circumferential manner. The telescopic member is provided inside the installation groove. One end of the elastic member is connected to the bottom wall of the installation groove, and the other end is connected to the telescopic member.

[0017] According to some embodiments of the present utility model, the communication pipe is a flexible pipe.

[0018] According to some embodiments of the present utility model, the second connecting sleeve includes an insertion tube portion and a stop portion connected outside the insertion tube portion. The insertion tube portion is divided into an insertion sub-portion and an outside remaining sub-portion by the stop portion. The insertion sub-portion can be inserted into the feed pipe, and the stop portion is used to stop the outside remaining sub-portion from entering the feed pipe.

[0019] According to the mixing plant of the second aspect embodiment of the present utility model, it includes:

[0020] A blanking hopper with a blanking pipe provided at the bottom;

[0021] The anti-leakage device of the first aspect embodiment, the first connecting sleeve is sleeved on the blanking pipe, and one end of the communication pipe is communicated with the blanking pipe.

[0022] According to the mixing plant of the second aspect embodiment of the present utility model, it has at least the following beneficial effects: By adopting the anti-leakage device in the first aspect embodiment, it can reduce material leakage, make the material feeding more efficient, and can realize the automatic docking of the first connecting sleeve and the material feeding pipe, making it more convenient to use.

[0023] According to some embodiments of the present utility model, the hopper further includes a control valve capable of opening and closing the material feeding pipe.

[0024] According to some embodiments of the present utility model, the material feeding pipe includes a main pipe portion and a clamping protrusion connected to the outer peripheral surface of the main pipe portion, and the clamping protrusions are distributed along the circumferential direction of the main pipe portion.

[0025] The additional aspects and advantages of the present utility model will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following will further illustrate the present utility model with reference to the drawings and embodiments, where:

[0027] Figure 1 is a schematic structural view of an anti-leakage device according to an embodiment of the present utility model;

[0028] Figure 2 is a cross-sectional view of an anti-leakage device according to an embodiment of the present utility model;

[0029] Figure 3 is Figure 2 a schematic structural view of part A in

[0030] Figure 4 is a three-dimensional cross-sectional view of an anti-leakage device according to an embodiment of the present utility model.

[0031] Reference Numerals in the Drawings:

[0032] Anti-leakage device 1000;

[0033] Communication assembly 100; Communication pipe 110; First connecting sleeve 120; Second connecting sleeve 130; Insertion cylinder portion 131; Stopping portion 132; Telescopic member 140; Elastic member 150;

[0034] Lifting assembly 200; Lifting member 210; Protective shell 220; Slide rail 221;

[0035] Cleaning assembly 300; Cleaning position 310;

[0036] Rotating assembly 400; Rotating member 410; Chute 411; Rotating drive source 420;

[0037] Hopper 2000; feeding pipeline 2100; main pipe section 2110; clamping projection 2120; control valve 2200;

[0038] Feeding pipeline 3000;

[0039] Support frame 4000. Detailed implementation mode

[0040] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0041] In the description of the present utility model, it should be understood that for the orientation description, such as up, down, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0042] In the description of the present utility model, several means one and more than one, and multiple means two and more than two. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0043] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0044] Concrete is formed by mixing various materials and water and is in a flowing state in the initial stage. The mixing process is usually carried out in a mixing plant, and the mixed materials will fall from the hopper at the bottom of the mixing plant into the inlet of the concrete mixer truck. Since the mixing plant is relatively high and the inlet of the concrete mixer truck is relatively small, during the feeding process, the concrete will splash and is likely to spill onto the top of the body of the concrete mixer truck and the ground, and it is necessary to clean these areas after the feeding is completed, which is time-consuming and laborious.

[0045] Refer to Figures 1 to 4As shown in the figure, an anti-leakage device 1000 according to an embodiment of the first aspect of the present utility model includes a communication component 100 and a lifting component 200. One end of the communication component 100 is communicated with the feeding pipe 2100 of the feeding hopper 2000, and the other end is communicated with the feeding pipe 3000 of the tank truck. The communication between the feeding pipe 2100 and the feeding pipe 3000 is realized through the communication component 100, greatly reducing the probability of material leakage. Moreover, a first connecting sleeve 120 is provided at one end of the communication component 100, and the lifting component 200 can separate or sleeve the first connecting sleeve 120 from the feeding pipe 2100, realizing the automatic installation of the first connecting sleeve 120, which is more convenient to use.

[0046] In this embodiment, the communication component 100 includes a communication pipe 110, a first connecting sleeve 120 provided at one end of the communication pipe 110, and a second connecting sleeve 130 provided at the other end of the communication pipe 110. The first connecting sleeve 120 is used to sleeve the feeding pipe 2100 of the feeding hopper 2000, and the second connecting sleeve 130 is used to sleeve the feeding pipe 3000 of the tank truck. Among them, the communication pipe 110 is a flexible pipe, so that the relative positions of the first connecting sleeve 120 and the second connecting sleeve 130 can be changed arbitrarily, and the sleeving of the first connecting sleeve 120 with the feeding pipe 2100 and the sleeving of the second connecting sleeve 130 with the feeding pipe 3000 are more convenient. The first connecting sleeve 120 is sleeved outside the feeding pipe 2100, a part of the second connecting sleeve 130 is inserted into the feeding pipe 3000, and the other part is sleeved outside the feeding pipe 3000.

[0047] The lifting component 200 includes a lifting member 210 that can move up and down along a first direction. The first direction can be a vertical direction perpendicular to the ground or form a certain angle with the ground, but the overall upward rising direction relative to the ground. In this example, the first direction is a vertical direction perpendicular to the ground. The lifting member 210 has a disengaged position and a connected position. The lifting member 210 is connected to the first connecting sleeve 120. In the disengaged position, the lifting member 210 drives the first connecting sleeve 120 to separate from the feeding pipe 2100. In the connected position, the lifting member 210 drives the first connecting sleeve 120 to connect with the feeding pipe 2100, and the lifting member 210 can maintain the connected position to form a support for the first connecting sleeve 120, improving the connection reliability of the first connecting sleeve 120. The lifting component 200 is an electric telescopic rod. One end of the electric telescopic rod is connected to the feeding hopper 2000, and the other end is arranged towards the ground and connected to the first connecting sleeve 120. It should be noted that the lifting component 200 can also be a lead screw-slider structure. The lead screw is arranged vertically, and the slider is slidably connected to the lead screw to move up and down along the vertical direction. The slider is connected to the first connecting sleeve 120.

[0048] Among them, the first connecting sleeve 120 is configured to: when the lifting assembly 200 is in the disengaged position, the first connecting sleeve 120 is separated from the blanking pipeline 2100; when the lifting assembly 200 is in the connected position, the first connecting sleeve 120 is sleeved on the blanking pipeline 2100. In the disengaged position, the first connecting sleeve 120 is separated from the blanking pipeline 2100. Since the first connecting sleeve 120 is higher than the second connecting sleeve 130, after the first connecting sleeve 120 is separated from the blanking pipeline 2100, it is convenient to clean the residual concrete in the connecting pipe 110 from the first connecting sleeve 120, avoiding the blockage and scrapping of the connecting pipe 110 caused by the solidification of the concrete, facilitating the repeated use of the connecting assembly 100 for multiple times, improving the utilization rate and reducing the cost.

[0049] It should be understood that the first connecting sleeve 120 and the second connecting sleeve 130 of the connecting pipe 110 are directly connected to the blanking pipeline 2100 of the blanking hopper 2000 and the feeding pipeline 3000 of the tank truck to reduce the occurrence of material leakage, making the blanking more efficient. And through the lifting assembly 200, the automatic docking of the first connecting sleeve 120 and the blanking pipeline 2100 is realized, making it more convenient to use.

[0050] Refer to Figure 1 、 Figure 2 And Figure 4 As shown in, in some specific embodiments of the present invention, the anti-leakage device 1000 further includes: a cleaning assembly 300 and a rotating assembly 400. The cleaning assembly 300 is used to clean the connecting pipe 110, and the cleaning assembly 300 has a cleaning position 310; the rotating assembly 400 includes a rotating member 410 that can rotate around a first direction. The rotating member 410 is connected to the lifting member 210 and is connected to the first connecting sleeve 120. The rotating member 410 has a material conveying position and a cleaning position; among them, the first connecting sleeve 120 is configured to: when the rotating member 410 is in the material conveying position, the first connecting sleeve 120 is aligned with the blanking pipeline 2100; when the rotating member 410 is in the cleaning position, the first connecting sleeve 120 is located at the cleaning position 310, and the cleaning assembly 300 cleans the connecting pipe 110.

[0051] It should be understood that when the rotating member 410 is in the material conveying position, the lifting member 210 can drive the first connecting sleeve 120 of the connecting assembly 100 to switch between the disengaged position and the connected position; and when the rotating member 410 is in the material conveying position and the lifting member 210 is in the disengaged position, the rotating assembly 400 can rotate around the first direction to the cleaning position, so that the first connecting sleeve 120 of the connecting assembly 100 directly rotates to the cleaning position, and the cleaning assembly 300 at the cleaning position cleans the residual concrete in the connecting pipe 110 to timely discharge the concrete in the connecting pipe 110, prevent the concrete from solidifying in the connecting pipe 110, improve the recycling times of the connecting assembly 100, and save costs.

[0052] In this embodiment, the lifting member 210 is indirectly connected to the first connecting sleeve 120 through the rotating member 410. Therefore, the first connecting sleeve 120 can not only be lifted under the drive of the lifting member 210, but also be rotated under the drive of the rotating member 410. The cleaning assembly includes a water pipe communicating with an external water source, a spray head communicating with the water pipe, and a valve communicating with the water pipe. The spray head is located at the cleaning position 310, and at the cleaning position 310, it is above the first connecting sleeve 120. The valve is used to control whether the spray head discharges water. A plurality of small holes are provided on the surface of the spray head facing the first connecting sleeve 120 to increase the impact force of the water flow.

[0053] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some specific embodiments of the present utility model, the lifting assembly 200 further includes a protective housing 220 provided at one end of the lifting member 210, and the rotating assembly 400 further includes a rotation driving source 420 drivingly connected to the rotating member 410. The rotation driving source 420 is provided inside the protective housing 220, and the rotating member 410 is located outside the protective housing 220.

[0054] It should be understood that the protective housing 220 protects the rotation driving source 420, preventing the water flow during the cleaning process of the cleaning assembly 300 from entering the rotation driving source 420 and reducing the failure rate of the rotation driving source 420. In this embodiment, the rotation driving source 420 is a motor, and the rotating member 410 is a connecting block connected to the output shaft of the motor. The connecting block is in a rectangular parallelepiped shape. The top surface of the connecting block is connected to the output shaft, and one side surface is connected to the outer peripheral surface of the first connecting sleeve 120.

[0055] Referring to Figure 3 As shown, in some specific embodiments of the present utility model, the rotating member 410 is slidably connected to the protective housing 220 along the circumferential direction around the first direction.

[0056] It should be understood that through the sliding connection between the rotating member 410 and the protective housing 220, the load on the output shaft of the motor is reduced, and part of the load of the rotating member 410 can be borne by the protective housing 220, improving the stability of the motor.

[0057] In this embodiment, a reverse "T"-shaped circular rail 221 is provided on the bottom surface of the protective case 220, and a reverse "T"-shaped chute 411 that fits the rail 221 is provided on the top surface of the rotating member 410. Among them, the rail 221 is detachably connected to the protective case 220. The top surface of the rotating member 410 is provided with a first plate and a second plate that form the chute 411. The first plate and the second plate clamp to form the chute 411. The first plate penetrates into the rail 221 from the small end of the rail 221, and the second plate abuts against the other end of the rail 221. The first plate and the second plate clamp the rail 221, and the rail 221 is located within the chute 411, so that the rail 221 is fitted into the chute 411. Then, the first plate and the second plate are locked into one body. Finally, the rail 221 is connected to the protective case 220 to realize the connection between the protective case 220 and the rotating member 410. The small end of the rail 221 is connected to the bottom end of the protective case 220. Specifically, a threaded hole is provided on the end face of the small end, and a through hole is also provided on the connection surface between the protective case 220 and the small end. A bolt passes through the through hole from within the protective case 220 and is locked and connected to the threaded hole. In addition, the rotating member 410 and the rail 221 can also be directly formed by 3D printing, so that the rail 221 is located within the chute 411, and then the rail 221 is connected to the protective case 220.

[0058] Referring to Figure 3 As shown, in some specific embodiments of the present invention, the communication component 100 further includes a telescopic member 140 and an elastic member 150. A plurality of installation grooves distributed in a circumferential manner are provided on the inner peripheral surface of the first connection sleeve 120. The telescopic member 140 is arranged within the installation grooves. One end of the elastic member 150 is connected to the bottom wall of the installation groove, and the other end is connected to the telescopic member 140.

[0059] It should be understood that when the first connection sleeve 120 is sleeved on the outer peripheral surface of the blanking pipeline 2100, the outer peripheral surface of the blanking pipeline 2100 will squeeze the telescopic member 140, causing the telescopic member 140 to move toward the inside of the installation groove, and the elastic member 150 is compressed by the force, increasing the pressure exerted by the telescopic member 140 on the outer peripheral surface of the blanking pipeline 2100 to increase the friction between the telescopic member 140 and the blanking pipeline 2100, making the connection between the first connection sleeve 120 and the blanking pipeline 2100 tighter.

[0060] Referring to Figure 2 and Figure 4 As shown, in some specific embodiments of the present invention, the second connection sleeve 130 includes an insertion cylinder portion 131 and a stop portion 132 connected to the outside of the insertion cylinder portion 131. The insertion cylinder portion 131 is divided into an insertion sub-portion and an outside-remaining sub-portion by the stop portion 132. The insertion sub-portion can be inserted into the feeding pipeline 3000, and the stop portion 132 is used to stop the outside-remaining sub-portion from entering the feeding pipeline 3000.

[0061] It should be understood that the second connecting sleeve 130 is directly inserted into the feeding pipeline 3000 through the inserting cylinder part 131, so that the concrete directly enters the feeding pipeline 3000 without overflowing from the connection position between the second connecting sleeve 130 and the inserting cylinder part 131, effectively avoiding material leakage.

[0062] In this embodiment, the stop part 132 is in the shape of a round cover and covers the feeding port of the feeding pipeline 3000. While the inserting cylinder part 131 further penetrates into the feeding pipeline 3000, the feeding port of the feeding pipeline 3000 is closed to avoid interference from the external environment.

[0063] Refer to Figure 1 、 Figure 2 and Figure 4 As shown, in the second aspect embodiment of the present utility model, a mixing building is proposed, including: a feeding hopper 2000 and the anti-leakage device 1000 of the first aspect embodiment. A feeding pipeline 2100 is provided at the bottom of the feeding hopper 2000; the first connecting sleeve 120 of the anti-leakage device 1000 of the first aspect embodiment is sleeved on the feeding pipeline 2100, and one end of the connecting pipe 110 communicates with the feeding pipeline 2100.

[0064] It should be understood that by adopting the anti-leakage device 1000 in the first aspect embodiment, material leakage can be reduced, the feeding is more efficient, and the automatic docking of the first connecting sleeve 120 and the feeding pipeline 2100 can be realized, making it more convenient to use.

[0065] In this embodiment, the mixing building further includes a support frame 4000. The top of the support frame 4000 is connected with the feeding hopper 2000. The feeding hopper 2000 is in a conical shape, and a conical feeding cavity is provided inside the feeding hopper 2000. The top of the feeding cavity is large and the bottom is small to converge the concrete to the bottom and flow out from the connecting pipe 110. The cleaning assembly 300 is connected to the support frame 4000, and can also be arranged on a separate frame body, or held by the user.

[0066] Refer to Figure 1 、 Figure 2 and Figure 4 As shown, in some specific embodiments of the present utility model, the feeding hopper 2000 further includes a control valve 2200 capable of opening and closing the feeding pipeline 2100. In this embodiment, the control valve 2200 is an electromagnetic valve to control the opening and closing of the feeding hopper 2000 and control the conveying of the concrete, making it more convenient to use.

[0067] Refer to Figure 3 As shown, in some specific embodiments of the present utility model, the feeding pipeline 2100 includes a main pipe part 2110 and a clamping protrusion 2120 connected to the outer peripheral surface of the main pipe part 2110. The clamping protrusions 2120 are distributed along the circumferential direction of the main pipe part 2110.

[0068] It should be understood that the clamping protrusion 2120 can be clamped with the telescopic member 140 in the first connecting sleeve 120, so that the telescopic member 140 is clamped and limited by the clamping protrusion 2120, and the first connecting sleeve 120 is less likely to be separated from the blanking hopper 2000, and the connection between the first connecting sleeve 120 and the blanking hopper 2000 is more reliable. In this embodiment, the clamping protrusion 2120 has an arc-shaped protruding surface, and the abutment between the arc-shaped protruding surface and the telescopic member 140 is smoother, which is convenient for the telescopic member 140 to continuously contract or extend along the arc-shaped protruding surface, and the telescopic member 140 can smoothly pass through or leave the clamping protrusion 2120, making the use more reliable.

[0069] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A leakage prevention device, characterized in that: include: A connecting assembly, comprising a connecting pipe, a first connecting sleeve arranged at one end of the connecting pipe, and a second connecting sleeve arranged at the other end of the connecting pipe, wherein the first connecting sleeve is used to be sleeved to a feeding pipe of a feeding hopper, and the second connecting sleeve is used to be sleeved to a feeding pipe of a tank truck; A lifting assembly, comprising a lifting member capable of lifting and moving in a first direction, the lifting member having a disengaged position and a connected position, and the lifting member is connected to the first connecting sleeve; Wherein, the first connecting sleeve is configured as follows: when the lifting assembly is located at the disengaged position, the first connecting sleeve is separated from the material discharge pipe; when the lifting assembly is located at the connected position, the first connecting sleeve is sleeved on the material discharge pipe.

2. The leakage prevention device according to claim 1, characterized in that: Also includes: A cleaning component, used for cleaning the connecting pipe, wherein the cleaning component has a cleaning position; A rotating assembly, comprising a rotating member capable of rotating about the first direction, the rotating member being connected to the lifting member and the first connecting sleeve, the rotating member having a material transfer position and a cleaning position; Wherein, the first connecting sleeve is configured as follows: when the rotating member is located at the material transfer position, the first connecting sleeve is aligned with the material discharge pipe; when the rotating member is located at the cleaning position, the first connecting sleeve is located at the cleaning position, and the cleaning component cleans the connecting pipe.

3. The leakage prevention device according to claim 2, characterized in that: The lifting assembly further includes a protective shell disposed at one end of the lifting member, and the rotating assembly further includes a rotating drive source transmission-connected to the rotating member, the rotating drive source is disposed inside the protective shell, and the rotating member is located outside the protective shell.

4. The leakage prevention device according to claim 3, characterized in that: The rotating member is slidably connected to the protective shell along a circumferential direction around the first direction.

5. The leakage prevention device according to claim 1, characterized in that: The connecting component also includes a telescopic part and an elastic part. The inner circumferential surface of the first connecting sleeve is provided with a plurality of installation grooves distributed in a circumference. The telescopic part is arranged in the installation groove. One end of the elastic part is connected to the bottom wall of the installation groove, and the other end is connected to the telescopic part.

6. The leakage prevention device according to claim 1, characterized in that: The connecting pipe is a flexible pipe.

7. The leakage prevention device according to claim 1, characterized in that: The second connecting sleeve includes an insert sleeve portion and a stopper portion connected to the outside of the insert sleeve portion, the insert sleeve portion is divided into an insertion portion and an external portion by the stopper portion, the insertion portion can be inserted into the feed pipe, and the stopper portion is used to stop the external portion from entering the feed pipe.

8. A mixing plant, characterized in that: include: A material discharge hopper with a material discharge pipe at the bottom; The anti-leakage device according to any one of claims 1 to 7, wherein the first connecting sleeve is arranged on the discharge pipe, and one end of the connecting pipe is connected to the discharge pipe.

9. The mixing tower according to claim 8, characterized in that: The discharge hopper also includes a control valve capable of opening and closing the discharge pipeline.

10. The mixing tower according to claim 8, characterized in that: The feed pipe comprises a main pipe portion and a clamping protrusion connected to the outer peripheral surface of the main pipe portion, and the clamping protrusion is distributed along the circumferential direction of the main pipe portion.

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