Slurry mixing equipment

Abstract

The utility model discloses slurry stirring equipment. The slurry stirring equipment comprises a tank body, a feeding device and a first stirring device, and an anti-segregation structure is arranged on the feeding device; the first stirring device is connected to the discharging port and used for stirring the raw materials. According to the device, the feeding device extends into the tank body from the top of the tank body, raw materials in the feeding device can naturally fall into the tank body according to the gravity of the raw materials, in the falling process of the raw materials, the raw materials can be scattered out of an anti-segregation structure on the feeding device, continuous raw material paving is facilitated, the mortar stirring efficiency is improved, and the mortar quality is improved; the raw materials in the tank body are further guided into the first stirring device to be stirred, so that finished product mortar is formed preliminarily; each part of the slurry mixing equipment forms a relatively independent module, and the free combination degree is high.

Description

Technical Field

[0001] The present application relates to the field of tunnel construction, and in particular to a slurry mixing device. Background Art

[0002] More and more tunnel projects are using dry-mixed mortar for grouting behind shield segments. Dry-mixed mortar has good fluidity, is easy to fill, has a long injection time, is highly resistant to water dispersion, has stable strength, and can effectively prevent segments from floating up. After mixing it with water in proportion, it is used for synchronous grouting of shield segments in tunnel projects. It has high stability and fluidity, low fluidity loss over time, suitable setting time, and strong resistance to dispersion. Dry-mixed mortar needs mortar mixing equipment to mix into finished mortar in tunnel projects.

[0003] At present, most of the dry-mix mortar mixing plant equipment used in engineering projects are traditional horizontal mixers, screw mixers, and planetary mixers. The quality of mortar mixed with traditional horizontal mixers, screw mixers, and planetary mixers is poor, and it is easy for materials of different properties to segregate. Utility Model Content

[0004] In order to solve at least one of the above technical problems, the present application provides a slurry mixing device, and the technical solution adopted is as follows:

[0005] The present application provides a slurry mixing device, which includes a tank body, a feeding device, and a first stirring device. The tank body is provided with a discharge port; the feeding device extends to the interior of the tank body, the feeding device is used to introduce raw materials into the tank body, and the feeding device is provided with an anti-segregation structure; the first stirring device is connected to the discharge port so that the raw materials in the tank body are transported to the first stirring device, and the first stirring device is used to stir the raw materials.

[0006] In certain embodiments of the present application, the tank body includes a straight portion and a contraction portion connected to each other, the contraction portion gradually decreases in radial dimension in a direction away from the straight portion, and the discharge port is arranged at the end of the contraction portion away from the straight portion.

[0007] In certain embodiments of the present application, the feeding device extends to the bottom of the tank body, and the anti-segregation structure is configured as a plurality of feeding holes, each of which is arranged axially along the feeding device so that the raw materials can be scattered into the interior of the tank body along each of the feeding holes.

[0008] In certain embodiments of the present application, the tank body is provided with an anti-blocking structure, and the anti-blocking structure is arranged inside the contraction portion, and the anti-blocking structure is used to allow the raw materials to be continuously guided out of the tank body along the discharge port.

[0009] In certain embodiments of the present application, a gap is left between the anti-blocking structure and the inner wall of the contraction portion, the anti-blocking structure includes a pointed end and a flat end, the radial dimension of the anti-blocking structure gradually decreases from the flat end to the pointed end, the flat end faces the discharge port, and the pointed end faces the straight portion.

[0010] In some embodiments of the present application, a plurality of tank bodies are provided, and the tank bodies are arranged in a straight line, or the tank bodies are arranged in a rectangular array.

[0011] In certain embodiments of the present application, a double-helix stirring structure is provided in the first stirring device, and the double-helix stirring structure rotates in the first stirring device to mix the raw materials evenly in the first stirring device.

[0012] In certain embodiments of the present application, the slurry mixing equipment further includes a second stirring device, and a metering structure is provided on the second stirring device, and the metering structure is used to measure the amount of the finished mortar.

[0013] In certain embodiments of the present application, the bottom of the tank body is provided with a bottom plate and a plurality of tank feet, each of the tank feet connects the bottom plate and the tank body, and each of the tank feet is provided with a weighing sensor, and the weighing sensor is used to measure the weight of the raw materials in the tank body.

[0014] In certain embodiments of the present application, a valve structure is provided at the discharge port, the valve structure faces the first stirring device, and the valve structure controls the process of conveying the raw materials from the tank body to the first stirring device.

[0015] The embodiments of the present application have at least the following beneficial effects: in the present application, the feeding device extends from the top of the tank body into the tank body, and the raw materials in the feeding device can naturally fall into the tank body according to their own gravity. During the falling process of the raw materials, the raw materials can be dispersed from the anti-segregation structure on the feeding device, which is conducive to the continuous spreading of the raw materials, and also improves the mixing efficiency and the quality of the mortar, thereby avoiding the secondary separation of the granular raw materials and the powdered raw materials. The raw materials in the tank body are further introduced into the first stirring device for stirring to preliminarily form a finished mortar; the various parts of the mixing equipment form relatively independent modules with a high degree of free combination.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1It is a structural schematic diagram of the tank body in the slurry mixing equipment of the present application;

[0019] Figure 2 It is the front view of the tank in the slurry mixing equipment of the present application;

[0020] Figure 3 This is a structural schematic diagram of a tank body discharge port being blocked without an anti-blocking structure;

[0021] Figure 4 It is a structural schematic diagram of the anti-blocking structure in the slurry mixing equipment of the present application;

[0022] Figure 5 It is a structural schematic diagram of a feeding device that does not adopt an anti-segregation structure and has secondary separation during the feeding process;

[0023] Figure 6 It is a structural schematic diagram of a feeding device with an anti-segregation structure in the slurry mixing equipment of the present application;

[0024] Figure 7 It is a top view of a plurality of tanks in the slurry mixing equipment of the present application arranged in a straight line;

[0025] Figure 8 It is a side view of a plurality of tanks in the slurry mixing equipment of the present application arranged in a straight line;

[0026] Fig. 9 It is a top view of a plurality of tanks in the slurry mixing equipment of the present application arranged in a rectangular array;

[0027] Fig.10 It is a side view of a plurality of tanks arranged in a rectangular array in the slurry mixing equipment of the present application;

[0028] Fig.11 It is the front view and side view of the first stirring device in the slurry mixing equipment of the present application.

[0029] Reference numerals:

[0030] Tank body 101; discharge port 102; straight portion 103; contraction portion 104; anti-blocking structure 105;

[0031] Bottom plate 201; tank foot 202; weighing sensor 203; foundation 204; support part 205;

[0032] Feeding device 301; feeding hole 302;

[0033] A first stirring device 401 ; a valve structure 402 ; a second stirring device 403 ; and a double-helix stirring structure 404 . DETAILED DESCRIPTION

[0034] This section will combine Figures 1 to 11Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0035] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The features defined as "first" and "second" are used to distinguish the feature names, rather than having special meanings. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The embodiment of the present application provides a slurry mixing device, which includes a tank body 101, a feeding device 301 and a first stirring device 401. The tank body 101 is used to receive raw materials and convey the raw materials to the first stirring device 401 for stirring, so that the raw materials are initially formed into a finished mortar. The feeding device 301 is used to convey the raw materials into the tank body 101, and an anti-segregation structure is provided on the feeding device 301. Due to the presence of the anti-segregation structure, secondary separation can be avoided in the process of the raw materials being scattered from the feeding device 301 into the tank body 101, ensuring that different types of raw materials are evenly distributed in the tank body 101, thereby improving the efficiency of uniform mixing of the raw materials and ensuring the quality of the finished mortar.

[0038] like Figure 1 and Figure 2As shown, in some examples, the raw materials enter the tank body 101 from the top of the tank body 101, and the tank body 101 is provided with a discharge port 102, and the discharge port 102 is provided at the bottom of the tank body 101. After entering the tank body 101, the raw materials naturally reach the discharge port 102 at the bottom due to gravity, and are discharged along the discharge port 102, thereby entering the first stirring device 401.

[0039] In some examples, the tank body 101 includes a straight portion 103 and a contraction portion 104, which are connected to each other, and the cross-sections of the straight portion 103 and the contraction portion 104 are both circular in order to evenly distribute the auxiliary raw materials at various positions of the tank body 101. It can be understood that the tank body 101 is vertically arranged, and the straight portion 103 is generally formed into a cylindrical shape.

[0040] Furthermore, the radial dimension of the contraction portion 104 gradually decreases in the direction away from the straight portion 103 , so that the contraction portion 104 is roughly formed into a cone, and the flat end cross-sectional shape of the contraction portion 104 is basically the same as the cross-sectional shape of the straight portion 103 to ensure the connection between the straight portion 103 and the contraction portion 104 .

[0041] In addition, the straight portion 103 is at the top of the contraction portion 104, and the discharge port 102 at the bottom of the tank body 101 is arranged on the contraction portion 104. It can be understood that the tip of the contraction portion 104 is at the bottom of the tank body 101, and the discharge port 102 is opened at the tip of the contraction portion 104. Since the cross-sectional area at the tip of the conical contraction portion 104 is small, the opening area of ​​the discharge port 102 can be ensured to be small, thereby preventing the raw material flow from the tank body 101 into the first stirring device 401 from being too large.

[0042] At the same time, an opening is also provided at the top of the tank body 101 . On the one hand, it is convenient to set the feeding device 301 ; on the other hand, the staff or maintenance personnel can observe the material discharge situation at the top of the tank body 101 .

[0043] like Figure 3 and Figure 4 As shown, in some examples, the tank body 101 is provided with an anti-blocking structure 105, which can prevent the raw material from forming a shape-stable structure at the position of the discharge port 102, thereby ensuring that the raw material can be continuously discharged from the tank body 101. Since the discharge blockage of the tank body 101 is formed at the position of the discharge port 102, and the discharge port 102 is located in the contraction part 104, the anti-blocking structure 105 is arranged inside the contraction part 104.

[0044] Figure 3The unloading state of the raw materials in the tank body 101 when the anti-blocking structure 105 is not provided in the tank body 101. When the raw materials are accumulated in the tank body 101, the internal friction and cohesion of the powder itself will generate shear stress and form a certain overall strength, which will hinder the displacement of particles and cause the overall fluidity to deteriorate. The raw materials at the discharge port 102 may form a stable arch bridge structure. The bridge of the raw materials in the tank body 101 will affect the continuity of the subsequent unloading of the tank body 101. In severe cases, the discharge port 102 of the tank body 101 will be blocked, resulting in difficulty in unloading or even interruption of unloading.

[0045] Figure 4 When the anti-blocking structure 105 is provided for the tank body 101, the raw material is in the unloading state in the tank body 101. Specifically, the anti-blocking structure 105 is set to a cone shape, and the anti-blocking structure 105 includes a tip and a flat end, and the radial dimension gradually decreases from the flat end to the tip. At the same time, the flat end faces the discharge port 102, and the tip faces the straight portion 103. When the tank body 101 is vertically arranged, the flat end of the anti-blocking structure 105 faces downward, and the tip of the anti-blocking structure 105 faces upward. It can be understood that there is a gap between the anti-blocking structure 105 and the inner wall of the contraction portion 104, so that the raw material can reach the discharge port 102 along the gap. The anti-blocking structure 105 can change the direction of the force when the raw material is piled up, forcing the raw material to pass through the gap according to the set travel path to reach the discharge port 102, and avoid the raw material from forming a structurally stable arch bridge structure at the position of the discharge port 102. In addition, the anti-blocking structure 105 is combined with an external vibrator and air blowing to further destroy the overall structural strength and prevent the occurrence of blockage.

[0046] like Figure 8 and Fig.10 As shown, in some examples, to ensure the stability of the tank body 101, a bottom plate 201 and a plurality of tank feet 202 are provided at the bottom of the tank body 101. The flat bottom plate 201 is easy to maintain a horizontal state, and the tank feet 202 are located between the tank body 101 and the bottom plate 201, and connect the two. Since the tank feet 202 have a certain length, a certain space can be reserved between the tank body 101 and the bottom plate 201, so as to facilitate the arrangement of the first stirring device 401. Specifically, to ensure the stability of the structure, at least three tank feet 202 are provided.

[0047] Furthermore, each tank foot 202 is provided with a weighing sensor 203, which is used to measure the weight of the raw materials in the tank body 101, so that the staff can understand the internal conditions of the tank body 101. Specifically, the weighing sensor 203 is arranged in the middle of the tank foot 202, dividing the tank foot 202 into two parts, upper and lower parts, and connecting plates are arranged at both ends of the weighing sensor 203. The upper and lower parts of the tank foot 202 are connected to the weighing sensor 203 through two connecting plates to form a whole.

[0048] At the same time, the weighing sensor 203 is in an active state and has a certain deformation. When the weight of the raw material in the tank body 101 changes, the pressure on the weighing sensor 203 changes, causing the deformation of the weighing sensor 203 to change. The weighing sensor 203 detects the weight of the raw material in the tank body 101 according to the deformation.

[0049] In some examples, a base is provided at the bottom of the bottom plate 201, and the base includes a foundation 204 buried underground and a support portion 205 extending from the foundation 204 to the bottom plate 201. The foundation 204 roughly reaches a depth of 1 meter underground, and the number of the support portions 205 corresponds to the number of the tank bodies 101. Specifically, one tank body 101 corresponds to four support portions 205, and the four support portions 205 are all connected to the bottom of the bottom plate 201. When the bottom plate 201 is set to a rectangular shape, the four support portions 205 are respectively located at the four corners of the bottom plate 201.

[0050] The support portion 205 raises the height of the bottom plate 201 of the tank body 101 relative to the ground, so that the external device placed on the ground can meet the requirement of being lower than the bottom plate 201, so as to facilitate the operation of the corresponding device.

[0051] like Figure 5 and Figure 6 As shown, the feeding device 301 extends from the top of the tank body 101 to the inside of the tank body 101, and the raw materials are scattered into the tank body 101 from the feeding device 301. The anti-segregation structure on the feeding device 301 can prevent the raw materials from being separated again during the scattering process, thereby ensuring the uniformity of the raw materials in the tank body 101. Specifically, the feeding device 301 is configured as a feeding pipe.

[0052] Figure 5 The tank body 101 is not provided with an anti-segregation structure, and the raw materials are fed into the tank body 101. When the raw materials are fed directly from the top of the tank body 101 in a single channel, since the dry-mixed mortar is mainly composed of a mixture of granular materials and powdery materials, such as quartz sand and cement, fly ash, etc., this method easily causes secondary separation of powder and granular materials in the raw materials, forming a layered cone, and causing segregation of the dry-mixed mortar.

[0053] Figure 6When the anti-segregation structure is set for the tank body 101, the raw materials are fed into the tank body 101. The feeding device 301 extends to the bottom of the tank body 101. Specifically, the feeding device 301 extends roughly to the intersection of the straight portion 103 and the contraction portion 104. The anti-segregation structure is set as a plurality of feeding holes 302. The feeding holes 302 are arranged along the axial direction of the feeding device 301. When the feeding device 301 is set vertically, each feeding hole 302 is at a different height, ensuring that there are channels for the raw materials to be scattered into the tank body 101 at different heights, which helps to continuously spread the raw materials to prevent the occurrence of segregation. According to experiments, setting feeding holes 302 at different heights on the feeding device 301 can avoid the stratification of raw materials in the tank body 101.

[0054] like Figure 8 and Fig.10 As shown, in some examples, the first stirring device 401 is located between the bottom plate 201 and the tank body 101, and the first stirring device 401 is connected to the discharge port 102. When the raw materials are discharged from the tank body 101 from the discharge port 102, they can naturally fall into the first stirring device 401. Under the stirring action of the first stirring device 401, the raw materials are fully mixed.

[0055] like Fig.11 As shown, in some examples, a double-helix stirring structure 404 is provided in the first stirring device 401. Under the action of a driving device such as a motor, the double-helix stirring structure 404 rotates in the first stirring device 401, thereby stirring the raw materials inside.

[0056] In some examples, a valve structure 402 is provided at the discharge port 102, and the valve structure 402 can control the opening or closing of the discharge port 102. When there is raw material in the tank body 101 and it needs to be discharged to the first stirring device 401, the valve structure 402 is opened, and the raw material passes through the valve structure 402 to reach the first stirring device 401; when there is no raw material in the tank body 101, the valve structure 402 is closed, and the slurry mixing device stops working. It can be understood that the valve structure 402 is facing the first stirring device 401.

[0057] Furthermore, the valve structure 402 can also control the opening of the discharge port 102, thereby limiting the flow rate of the raw material. When the first stirring device 401 can bear a larger amount of raw material, the valve structure 402 increases the opening, and the tank body 101 will introduce the raw material into the first stirring device 401 at a larger flow rate; when the first stirring device 401 cannot bear the current raw material flow rate, the valve structure 402 decreases the opening.

[0058] In some examples, a material discharge structure is disposed at the bottom of the valve structure 402 , and the raw material passing through the valve structure 402 can be more accurately introduced into the first stirring device 401 along the material discharge structure.

[0059] like Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, in some examples, the slurry mixing equipment also includes a second stirring device 403, and the raw materials passing through the first stirring device 401 need to be further introduced into the second stirring device 403 for processing. If the height of the second stirring device 403 is greater than or equal to the height of the first stirring device 401, the process of transporting the raw materials from the first stirring device 401 to the second stirring device 403 requires additional power. Therefore, the height of the second stirring device 403 needs to be less than the height of the first stirring device 401, and the raw materials can naturally fall into the second stirring device 403 according to their own gravity. Since the support part 205 raises the height of the bottom plate 201 relative to the ground, when the second stirring device 403 is on the ground or on the foundation 204, it can be satisfied that the height of the second stirring device 403 is less than the height of the first stirring device 401. Among them, a metering structure is provided on the second stirring device 403, and the metering structure is used to measure the amount of the finished mortar.

[0060] like Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, in some examples, the slurry mixing equipment includes a plurality of tanks 101, each tank 101 is equipped with a first stirring device 401 at the bottom, and each tank 101 is provided with a corresponding support portion 205 at the bottom. At the same time, all tanks 101 share a second stirring device 403. Specifically, the tanks 101 are arranged in a straight line or in a rectangular array.

[0061] In some examples, the slurry mixing equipment also includes a dust removal device. During the feeding and mixing of raw materials, the dust removal device can perform dust removal work, reduce dust during the use of the equipment, and protect the environment around the project.

[0062] In some examples, the slurry mixing equipment also includes a control system, which is composed of a central control system and a field control box. The number of field control boxes can be appropriately increased according to process requirements. The central control system is in the form of a touch-screen all-in-one machine, which can control several control boxes at the same time or independently control a certain control box for production.

[0063] Specifically, the control system needs to be electrically connected to the valve structure 402, the weighing sensor 203, the metering structure, etc., so as to control and display the feeding process, the weight of the raw materials, and the amount of the finished mortar.

[0064] In some examples, a ladder is provided on the tank body 101, and workers or maintenance personnel can climb the ladder to the top of the tank body 101 to observe the specific material unloading situation to facilitate equipment maintenance.

[0065] The slurry mixing equipment adopts anti-segregation and anti-blocking structures, and adopts modular design ideas to optimize the overall design. The equipment can be quickly configured according to project requirements, with a small footprint and strong adaptability. The recording procedures and mixing ideas are optimized, the equipment failure rate is reduced, and the flexibility of the overall equipment for project turnover is enhanced. The slurry mixing equipment adopts a slurry mixing process that meets automatic control, separates the slurry mixing process and the proportioning process, and the management personnel manage the proportioning, while the slurry mixing personnel only need to be responsible for slurry mixing.

[0066] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A slurry mixing device, characterized in that: include: A tank body, wherein the tank body is provided with a discharge port; A feeding device, the feeding device extending into the interior of the tank body, the feeding device being used to introduce raw materials into the tank body, and the feeding device being provided with an anti-segregation structure; A first stirring device, wherein the first stirring device is connected to the discharge port so that the raw materials in the tank body are transported to the first stirring device, and the first stirring device is used to stir the raw materials.

2. The slurry mixing equipment according to claim 1, characterized in that: The tank body comprises a straight portion and a contraction portion connected to each other, the contraction portion gradually decreases in radial dimension in a direction away from the straight portion, and the discharge port is arranged at an end of the contraction portion away from the straight portion.

3. The slurry mixing equipment according to claim 2, characterized in that: The feeding device extends to the bottom of the tank body, and the anti-segregation structure is provided with a plurality of feeding holes, each of which is arranged along the axial direction of the feeding device so that the raw materials are scattered into the interior of the tank body along each of the feeding holes.

4. The slurry mixing equipment according to claim 2, characterized in that: The tank body is provided with an anti-blocking structure, and the anti-blocking structure is arranged inside the contraction part, and the anti-blocking structure is used to allow the raw materials to be continuously led out of the tank body along the discharge port.

5. The slurry mixing equipment according to claim 4, characterized in that: A gap is left between the anti-blocking structure and the inner wall of the contraction portion, the anti-blocking structure comprises a pointed end and a flat end, the radial dimension of the anti-blocking structure gradually decreases from the flat end to the pointed end, the flat end faces the discharge port, and the pointed end faces the straight portion.

6. The slurry mixing equipment according to claim 1, characterized in that: A plurality of tank bodies are provided, and the tank bodies are arranged in a straight line, or the tank bodies are arranged in a rectangular array.

7. The slurry mixing equipment according to claim 1, characterized in that: A double-helix stirring structure is arranged in the first stirring device, and the double-helix stirring structure rotates in the first stirring device to mix the raw materials evenly in the first stirring device.

8. The slurry mixing equipment according to claim 1, characterized in that: The slurry mixing equipment also includes a second stirring device, on which a metering structure is provided, and the metering structure is used to measure the amount of the finished mortar.

9. The slurry mixing equipment according to claim 1, characterized in that: The bottom of the tank body is provided with a bottom plate and a plurality of tank feet, each of the tank feet connects the bottom plate and the tank body, and each of the tank feet is provided with a weighing sensor, and the weighing sensor is used to measure the weight of the raw materials in the tank body.

10. The slurry mixing equipment according to claim 1, characterized in that: A valve structure is provided at the discharge port, the valve structure faces the first stirring device, and the valve structure controls the process of conveying the raw materials from the tank body to the first stirring device.

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