Telescopic discharging device and mixing plant thereof

Abstract

The utility model relates to the field of engineering machinery, and discloses a telescopic discharging device and a mixing plant thereof. The telescopic discharging device comprises a discharging pipe used for conveying materials; the telescopic hopper component is provided with a telescopic hopper body located below the discharging pipe, the upper portion of the telescopic hopper body communicates with the discharging pipe, and a discharging opening capable of moving up and down is formed in the lower portion of the telescopic hopper body; the material receiving hopper component is provided with a material receiving hopper body located below the telescopic hopper body, and the upper portion of the material receiving hopper body is provided with a material receiving opening capable of moving and covering the discharging opening; the fixing frame is used for fixing the telescopic hopper component and the receiving hopper component. The telescopic hopper component and the material receiving hopper component are additionally arranged below the discharging pipe, so that materials can completely fall into the charging hopper during discharging and can drop into the material receiving hopper body after discharging, the problem that the materials are prone to splashing and leaking in the discharging process of the mixing station is solved, and the discharging efficiency of the mixing station is improved. The effects of reducing pollution to surrounding facilities and a mixer truck body and reducing the cleaning frequency and the cleaning time are achieved.

Description

Technical Field

[0001] The present application belongs to the field of engineering machinery, and specifically relates to a telescopic unloading device and a mixing station thereof. Background Art

[0002] In concrete construction, a mixing station is an engineering equipment mainly used for stirring and mixing concrete, and usually includes a mixing main unit, a discharge hopper, and a discharge device. The concrete mixed by the mixing main unit is stored in the discharge hopper, discharged to the loading hopper of the mixer truck through the discharge device, and then transported to the construction site by the mixer truck. In the existing technology, on the one hand, the position of the discharge port of the discharge device is fixed, while the height of the loading hopper is different. There is a certain discharge height difference from the discharge port to the feed port of the loading hopper. During the high-speed unloading process, material splashing will occur, causing concrete to adhere to surrounding facilities and the body of the mixer truck. On the other hand, after unloading is completed, the concrete remaining in the unloading device will continue to drip onto the ground and the body of the mixer truck through the discharge port. Therefore, the existing mixing stations are prone to material splashing and material dripping during the unloading process, which may cause pollution to surrounding facilities and the body of the mixer truck. Cleaning is difficult and time-consuming, and the environmental pollution is high. Utility Model Content

[0003] The purpose of this application is to provide a telescopic unloading device and a mixing station thereof, which are used to solve the problem of material splashing and material dripping during the unloading process of the mixing station, thereby reducing the pollution to surrounding facilities and the body of the mixer truck, and reducing the number of cleanings and cleaning time.

[0004] In order to achieve the above objectives, the present application provides a telescopic unloading device, comprising:

[0005] Discharge pipe, for conveying materials;

[0006] The telescopic bucket component is provided with a telescopic bucket body located below the discharge pipe, the upper portion of the telescopic bucket body is connected to the discharge pipe, and the lower portion of the telescopic bucket body is provided with a discharge port that can move up and down;

[0007] A receiving hopper component is provided with a receiving hopper body located below the telescopic hopper body, and an upper portion of the receiving hopper body is provided with a receiving port that can move and cover the discharge port;

[0008] A fixing frame fixes the telescopic bucket component and the material receiving hopper component.

[0009] In some embodiments, the telescopic bucket component includes:

[0010] The telescopic bucket body is sleeved on the outside of the discharge pipe;

[0011] A first guide rail assembly is vertically arranged on the fixing frame to support and guide the telescopic bucket body to move up and down;

[0012] The first power assembly is arranged on the fixing frame and drives the telescopic bucket body to move up and down.

[0013] In some embodiments, the first rail assembly includes:

[0014] First sliding rods are arranged vertically in pairs on the fixing frame along both sides of the telescopic bucket body;

[0015] The first sliding sleeves are respectively sleeved on the first sliding rods and are firmly connected to both sides of the telescopic bucket body.

[0016] In some embodiments, the first power assembly includes:

[0017] An electric hoist is arranged on the fixing frame;

[0018] A guide pulley is distributed between the electric hoist and the telescopic bucket body;

[0019] A rope is wound around the guide pulley, one end of which is connected to the electric hoist, and the other end of which is connected to the telescopic bucket body.

[0020] In some embodiments, the inner wall of the telescopic bucket body is paved with a wear-resistant lining; or a rubber funnel is provided at the lower portion of the telescopic bucket body, and the bottom opening of the rubber funnel is the discharge port.

[0021] In some embodiments, the hopper component includes:

[0022] The receiving hopper body has a receiving opening on the upper portion thereof which is not smaller than the discharge opening;

[0023] A second guide rail assembly is arranged on the fixing frame in a transverse direction to support and guide the horizontal movement of the hopper body;

[0024] The second power assembly is arranged on the fixing frame and drives the receiving hopper body to move horizontally.

[0025] In some embodiments, the second power assembly is a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic cylinder laterally arranged on the fixed frame, and a piston rod of the second power assembly is hinged to the hopper body.

[0026] In some embodiments, the telescopic unloading device is also provided with a cleaning and recovery component, specifically including: a water supply pipe, a spray pipe and a return pipe, the water supply pipe is connected to the spray pipe, the spray pipe is arranged around the edge of the receiving port of the receiving hopper body, and the return pipe is connected to the bottom of the receiving hopper body.

[0027] In some embodiments, the cleaning and recovery component further includes a water pump connected to the water supply pipe and capable of pumping clean water, or a return water tank connected to the return water pipe and capable of storing mixed water.

[0028] A second aspect of the present application provides a mixing station, comprising a discharge hopper and the above-mentioned telescopic discharge device; the discharge hopper is overhead, the fixing frame is hoisted at the lower part of the discharge hopper, and the bottom of the discharge hopper is connected to the discharge pipe.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The present application increases the telescopic bucket component so that the height of the discharge port is changed from fixed to adjustable, adapting to the loading hopper heights of different mixer trucks, compensating for or eliminating the height difference of the discharge, and allowing all materials to fall into the loading hopper; by increasing the receiving hopper component, the material remaining in the discharge pipe flows into the receiving hopper body through the discharge port and the receiving port; thereby solving the problem of material splashing and material dripping during the unloading process of the mixing station, thereby reducing pollution to surrounding facilities and the mixer truck body, and reducing the number of cleanings and cleaning time.

[0031] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings:

[0033] Figure 1 This is a structural diagram of a mixing station according to a specific embodiment of the present application.

[0034] Figure 2 This is a structural diagram of the telescopic bucket component of a specific embodiment of this application.

[0035] Figure 3 for Figure 2 A-direction view.

[0036] Figure 4 This is a structural diagram of the hopper component of a specific embodiment of this application.

[0037] Figure 5 This is a structural diagram of the cleaning and recovery components of a specific embodiment of this application.

[0038] Explanation of the accompanying drawings: discharge pipe 1, telescopic bucket component 2, telescopic bucket body 21, discharge port 211, wear-resistant lining 212, rubber funnel 213, first guide rail assembly 22, first slide bar 221, first sleeve 222, first power assembly 23, electric hoist 231, guide pulley 232, rope 233, receiving hopper component 3, receiving hopper body 31, receiving port 311, second guide rail assembly 32, second slide bar 321, second sleeve 322, second power assembly 33, fixed frame 4, cleaning and recovery component 5, water pipe 51, spray pipe 52, return water pipe 53, water pump 54, return water tank 55, discharge hopper 6, mixer truck 7. DETAILED DESCRIPTION

[0039] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0040] like Figures 1 to 5 As shown, a telescopic unloading device includes:

[0041] Discharge pipe 1, for conveying materials;

[0042] The telescopic bucket component 2 is provided with a telescopic bucket body 21 located below the discharge pipe 1. The upper portion of the telescopic bucket body 21 is connected to the discharge pipe 1, and the lower portion of the telescopic bucket body 21 is provided with a discharge port 211 that can move up and down;

[0043] The receiving hopper component 3 is provided with a receiving hopper body 31 located below the telescopic hopper body 21, and a receiving opening 311 is provided on the upper portion of the receiving hopper body 31 that can move and cover the discharge opening 211;

[0044] The fixing frame 4 fixes the telescopic bucket component 2 and the material receiving hopper component 3.

[0045] In the present application, during unloading, the material flows from the discharge pipe 1 into the telescopic bucket component 2. The telescopic bucket component 2 can move the discharge port 211 up and down according to the height of the loading hopper of the different mixer trucks 7, and adjust the height of the discharge port 211 to compensate for or eliminate the discharge height difference between the discharge port 211 and the feed port of the loading hopper, so that the material can all fall into the loading hopper, thereby preventing material splashing. After unloading is completed, the receiving port 311 of the receiving hopper component 3 can move to the bottom of the telescopic bucket body 21 and cover the discharge port 211 of the telescopic bucket body 21, so that the material remaining in the discharge pipe 1 can all flow into the receiving hopper body 31 through the discharge port 211 and the receiving port 311, thereby preventing material dripping. The present application adds a telescopic bucket component 2 and a receiving hopper component 3 below the discharge pipe 1, so that the material can all fall into the loading hopper during discharge and drip into the receiving hopper body 31 after discharge, thereby solving the problem of material splashing and material dripping during the unloading process of the mixing station, achieving the effect of reducing pollution to surrounding facilities and the body of the mixer truck, and reducing the number of cleanings and cleaning time.

[0046] like Figure 2 、 Figure 3 As shown, specifically, the telescopic bucket component 2 includes:

[0047] The telescopic bucket body 21 is sleeved on the outside of the discharge pipe 1;

[0048] The first guide rail assembly 22 is vertically arranged on the fixed frame 4 to support and guide the telescopic bucket body 21 to move up and down;

[0049] The first power assembly 23 is provided on the fixing frame 4 and drives the telescopic bucket body 21 to move up and down.

[0050] In this application, during unloading, the first power assembly 23 drives the telescopic bucket body 21 to move up and down under the support and guidance of the first guide rail assembly 22, thereby achieving the up and down movement of the discharge port 211 at the lower part of the telescopic bucket body 21. The telescopic bucket body 21 is equivalent to the downward extension of the discharge pipe 1, thereby lowering the height of the discharge port 211.

[0051] Optionally (not shown in the figure), the telescopic bucket body can be stretched or compressed along its axis to change its own length, thereby achieving the up and down movement of the discharge port on the telescopic bucket body.

[0052] Those skilled in the art can understand that the telescopic bucket component of the present application is not limited to the up and down movement of the telescopic bucket body mentioned above, but can also be the telescopic bucket body itself. Other structural forms that can realize the up and down movement of the discharge port should also fall within the scope of protection of this application.

[0053] Furthermore, the first guide rail assembly 22 includes:

[0054] The first sliding rods 221 are arranged vertically and in pairs on the fixing frame 4 along both sides of the telescopic bucket body 21;

[0055] The first sliding sleeves 222 are respectively sleeved on the first sliding rods 221 and are fastened to both sides of the telescopic bucket body 21 .

[0056] Furthermore, the first power assembly 23 includes:

[0057] An electric hoist 231 is provided on a fixed frame 4;

[0058] The guide pulley 232 is distributed between the electric hoist 231 and the telescopic bucket body 21;

[0059] The rope 233 is wound around the guide pulley 232 , one end of which is connected to the electric hoist 231 , and the other end of which is connected to the telescopic bucket body 21 .

[0060] In this application, the electric hoist 231 reels the rope 233, the rope 233 becomes shorter, and the other end of the rope 233 pulls the telescopic bucket body 21 up along the first slide bar 221; the electric hoist 231 unwinds the rope 233, the rope 233 becomes longer, and the telescopic bucket body 21 descends along the first slide bar 221 under the action of its own gravity; the electric hoist 231 stops, the length of the rope 233 remains unchanged, and the telescopic bucket body 21 maintains a constant height under the tension of the rope 233.

[0061] Furthermore, the inner wall of the telescopic bucket body 21 is paved with a wear-resistant lining 212. During unloading, the material flows through the inner wall of the telescopic bucket body 21 at high speed. The wear-resistant lining 212 can improve the wear resistance of the inner wall and extend the service life of the telescopic bucket body 21.

[0062] Furthermore, a rubber funnel 213 is provided at the bottom of the telescopic bucket body 21. The bottom opening of the rubber funnel 213 serves as a discharge port 211. On the one hand, the rubber funnel 213 provides a certain degree of damping, which helps to concentrate the material downward when passing through the discharge port 211, reducing splashing. On the other hand, the rubber funnel 213 has a certain degree of elasticity, which cushions the discharge port 211 of the telescopic bucket body 21 as it descends into the interior of the charging hopper, preventing damage to the telescopic bucket body 21.

[0063] like Figure 4 As shown, specifically, the hopper component 3 includes:

[0064] The receiving hopper body 31 has a receiving opening 311 on the upper portion that is not smaller than the discharge opening 211;

[0065] The second guide rail assembly 32 is arranged on the fixed frame 4 in the transverse direction to support and guide the hopper body 31 to move horizontally;

[0066] The second power assembly 33 is provided on the fixing frame 4 and drives the hopper body 31 to move horizontally.

[0067] In this application, after unloading is completed, under the support and guidance of the second guide rail assembly 32, the second power assembly 33 drives the receiving hopper body 31 to move horizontally, thereby realizing the horizontal movement of the receiving port 311 on the upper part of the receiving hopper body 31 to the bottom of the telescopic hopper body 21, and covering the unloading port 211 of the telescopic hopper body 21.

[0068] Optionally (not shown in the figure), the receiving hopper body is hinged on the fixed frame and can be flipped to the bottom of the telescopic hopper body to cover the discharge port of the telescopic hopper body.

[0069] Those skilled in the art can understand that the receiving hopper component of the present application is not limited to the horizontal movement of the above-mentioned receiving hopper body, but can also be the flipping movement of the receiving hopper body. Other structural forms that can realize the movement of the receiving port and cover the discharge port should also fall within the scope of protection of this application.

[0070] Furthermore, the second guide rail assembly 32 includes:

[0071] The second slide bars 321 are arranged in pairs on the fixing frame 4 along both sides of the hopper body 31;

[0072] The second sliding sleeves 322 are respectively sleeved on the second sliding rods 321 and are firmly connected to both sides of the hopper body 31 .

[0073] Furthermore, the second power assembly 33 is a hydraulic cylinder, a pneumatic cylinder, or an electric telescopic cylinder laterally arranged on the fixing frame 4 , and a piston rod of the second power assembly 33 is hingedly connected to the hopper body 31 .

[0074] In this application, the piston rod of the second power assembly 33 extends, pushing the receiving hopper body 31 to move horizontally along the second slide rod 321 to the bottom of the telescopic bucket body 21; the piston rod of the second power assembly 33 retracts, pulling the receiving hopper body 31 to move horizontally along the second slide rod 321 away from the bottom of the telescopic bucket body 21.

[0075] like Figure 5 As shown, specifically, the telescopic unloading device is also provided with a cleaning and recovery component 5, which specifically includes: a water supply pipe 51, a spray pipe 52 and a return pipe 53. The water supply pipe 51 is connected to the spray pipe 52, and the spray pipe 52 is arranged around the edge of the receiving port 311 of the receiving hopper body 31. The return pipe 53 is connected to the bottom of the receiving hopper body 31.

[0076] In this application, clean water flows into the hopper body 31 through the water pipe 51 and is transported to the spray pipe 52. The spray pipe 52 is connected to the hopper body 31 for flushing, and the mixed water containing the impurities flows out through the return pipe 53. The cleaning and recovery component 5 can be controlled by the electromagnetic valve and program to automatically connect to the hopper body 31 for spray cleaning, achieving the effect of anti-pollution and cleaning.

[0077] Furthermore, the cleaning and recovery component 5 further includes a water pump 54 connected to the water supply pipe 51 and capable of pumping clean water, or a return water tank 55 connected to the return water pipe 53 and capable of storing mixed water.

[0078] In some embodiments, the ends of the first slide bar 221 are vertically fastened to the fixed frame 4 via mounting brackets. The first sliding sleeve 222 is mounted on brackets on either side of the outer wall of the telescopic bucket body 21. The telescopic bucket body 21 is sleeved onto the two first slide bars 221. An electric hoist 231 is hoisted onto the crossbeam. One end of two ropes 233 is wound around the electric hoist 231. The other ends, after being redirected by a plurality of guide pulleys 232, are fastened to the rope mounting brackets on either side of the outer wall of the telescopic bucket body 21. The rubber funnel 213 is fastened to the lower portion of the telescopic bucket body 21 via a flange.

[0079] In some embodiments, the ends of the second slide rod 321 are transversely fastened to the fixed frame 4 via mounting brackets. The second sliding sleeve 322 is mounted on a bracket on the edge of the receiving port 311 of the hopper body 31. The hopper body 31 is sleeved on the two second slide rods 321. The second power assembly 33 is hinged to the fixed frame 4 via mounting brackets, and its piston rod is hinged to the outer wall of the hopper body 31.

[0080] In some embodiments, a spray pipe 52 is secured with U-bolts and surrounds the edge of the receiving opening 311 of the hopper body 31. A water pump 54 extracts groundwater and pumps clean water into the water pipe 51. The clean water flows through the spray pipe 52 to flush the inner wall of the hopper body 31. The cleaned mixed water flows through the return pipe 53 into the return tank 55.

[0081] like Figure 1 As shown, a mixing station includes a discharge hopper 6 and the above-mentioned telescopic discharge device; the discharge hopper 6 is overhead, the lower part of the discharge hopper 6 is hoisted with a fixed frame 4, and the bottom of the discharge hopper 6 is connected to the discharge pipe 1.

[0082] By adopting the above-mentioned telescopic unloading device, the present application avoids material splashing and dripping during the unloading process, making the unloading area of ​​the mixing station clean and tidy, reducing cleaning and maintenance costs, and reducing environmental pollution. In addition, because the unloading port 211 of the unloading device does not cause material dripping, the loading process of the mixer truck 7 can be adjusted from reverse entering the unloading area to passing through the unloading area straight, greatly improving material loading efficiency, optimizing the layout of the mixing station, and improving the utilization efficiency of the site space.

[0083] In this application, the unloading process of the mixing station is as follows:

[0084] Before unloading, the receiving hopper body 31 is located directly below the discharge port 211; when the loading hopper of the mixer truck 7 moves to directly below the discharge port 211, the piston rod of the second power assembly 33 retracts, pulling the receiving hopper body 31 back to one side; then the electric hoist 231 releases the rope 233, and the telescopic bucket body 21 descends into the loading hopper of the mixer truck 7 by its own weight, and its discharge port 211 extends into the loading hopper by more than 50 mm; the material in the unloading hopper 6 flows downward along the unloading pipe 1 and the telescopic bucket body 21, and unloading begins.

[0085] The mixer truck 7 completes loading and unloading; the electric hoist 231 reels the rope 233 and pulls the telescopic bucket body 21 up to a reasonable position; the piston rod of the second power assembly 33 extends and pushes the receiving hopper body 31 to just below the discharge port 211; the mixer truck 7 leaves the unloading area; the cleaning and recovery component 5 is started, and the inner wall of the receiving hopper body 31 is flushed through the spray pipe 52, and returned through the return pipe 53.

[0086] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0087] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0089] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A telescopic unloading device, characterized in that: include: A discharge pipe (1) for conveying materials; The telescopic bucket component (2) is provided with a telescopic bucket body (21) located below the discharge pipe (1), the upper part of the telescopic bucket body (21) is connected to the discharge pipe (1), and the lower part of the telescopic bucket body (21) is provided with a discharge port (211) that can move up and down; A material receiving hopper component (3), comprising a material receiving hopper body (31) located below the telescopic hopper body (21), wherein the upper portion of the material receiving hopper body (31) is provided with a material receiving opening (311) that is movable and covers the discharge opening (211); A fixing frame (4) fixes the telescopic bucket component (2) and the material receiving bucket component (3).

2. The telescopic unloading device according to claim 1, characterized in that: The telescopic bucket component (2) comprises: A telescopic bucket body (21) is sleeved on the outside of the discharge pipe (1); A first guide rail assembly (22) is vertically arranged on the fixing frame (4) to support and guide the telescopic bucket body (21) to move up and down; The first power assembly (23) is arranged on the fixing frame (4) and drives the telescopic bucket body (21) to move up and down.

3. The telescopic unloading device according to claim 2, characterized in that: The first guide rail assembly (22) comprises: First sliding rods (221) are arranged vertically in pairs on the fixing frame (4) along two sides of the telescopic bucket body (21); The first sliding sleeves (222) are respectively sleeved on the first sliding rods (221) and are firmly connected to both sides of the telescopic bucket body (21).

4. The telescopic unloading device according to claim 2, characterized in that: The first power assembly (23) comprises: An electric hoist (231) is arranged on the fixing frame (4); A guide pulley (232) is distributed between the electric hoist (231) and the telescopic bucket body (21); A rope (233) is wound around the guide pulley (232), one end of which is connected to the electric hoist (231) and the other end of which is connected to the telescopic bucket body (21).

5. The telescopic unloading device according to claim 2, characterized in that: The inner wall of the telescopic bucket body (21) is paved with a wear-resistant lining plate (212); or a rubber funnel (213) is provided at the lower part of the telescopic bucket body (21), and the bottom opening of the rubber funnel (213) is the discharge port (211).

6. The telescopic unloading device according to claim 1, characterized in that: The receiving hopper component (3) comprises: The receiving hopper body (31) has a receiving opening (311) at the top thereof which is not smaller than the discharge opening (211); A second guide rail assembly (32) is disposed on the fixing frame (4) in a transverse direction to support and guide the receiving hopper body (31) to move horizontally; The second power assembly (33) is arranged on the fixing frame (4) and drives the receiving hopper body (31) to move horizontally.

7. The telescopic unloading device according to claim 6, characterized in that: The second power assembly (33) is a hydraulic cylinder, a gas cylinder or an electric telescopic cylinder which is arranged on the fixing frame (4) in the transverse direction, and the piston rod of the second power assembly (33) is hinged to the receiving hopper body (31).

8. The telescopic unloading device according to any one of claims 1 to 7, characterized in that: The telescopic unloading device is also provided with a cleaning and recovery component (5), which specifically comprises: a water supply pipe (51), a spray pipe (52) and a return pipe (53), wherein the water supply pipe (51) is connected to the spray pipe (52), the spray pipe (52) is arranged around the edge of the receiving port (311) of the receiving hopper body (31), and the return pipe (53) is connected to the bottom of the receiving hopper body (31).

9. The telescopic unloading device according to claim 8, characterized in that: The cleaning and recovery component (5) further comprises a water pump (54) connected to the water delivery pipe (51) and capable of pumping clean water, or a return water tank (55) connected to the return water pipe (53) and capable of storing mixed water.

10. A mixing station, characterized in that: It comprises a discharge hopper (6) and a telescopic discharge device as claimed in any one of claims 1 to 9; the discharge hopper (6) is arranged overhead, the fixing frame (4) is hoisted at the lower part of the discharge hopper (6), and the bottom of the discharge hopper (6) is connected to the discharge pipe (1).

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