Mud and curing agent mixer

Abstract

The utility model relates to the technical field of shield tunneling, in particular to a slurry and curing agent mixer which comprises a slurry storage tank, the bottom of the slurry storage tank is fixedly connected and communicated with a slurry pump, and one end of the slurry pump is fixedly connected and communicated with a slurry pipe; through the design that the high-speed fan and the curing agent storage tank are communicated together through the transfer box, the high-speed fan can generate high-pressure gas outside the transfer box, then the high-pressure gas wraps the curing agent falling into the transfer box into the slurry pipe, and the curing agent does not need to make contact with the high-speed fan; according to the high-speed fan, the probability that the curing agent is retained in the high-speed fan is reduced, the design of the filter screen is adopted, the curing agent can be prevented from entering the high-speed fan, no matter whether the high-speed fan operates or not, the curing agent cannot enter the high-speed fan, the high-speed fan always operates in a clean state, and the operation burden and the fault rate of the high-speed fan are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunneling, in particular to a mud and curing agent mixer. Background Art

[0002] The shield tunneling method is a fully mechanized construction method within the underground excavation method. Currently, shield machines generate large amounts of mud during operation. Directly discharging the mud would cause serious environmental pollution. Currently, solidification is often used to convert the mud into a stable, harmless solid form, minimizing environmental damage.

[0003] At present, a Chinese patent discloses a solidification device for the pretreatment process of a mud purification device (authorization announcement number CN208471849U). The utility model provides a solidification device for the pretreatment process of a mud purification device. Through its structural composition, the dehydrated mud and the solidifying agent can be effectively mixed and stirred respectively, thereby increasing the contact area between the mud and the solidifying agent, accelerating the solidification process of the mud, improving the efficiency of the mud solidification, and ensuring the effect of the mud solidification.

[0004] Since the above-mentioned device is equipped with a high-speed fan for conveying powdered curing agent at the curing agent tank and the curing agent inlet, the curing agent needs to pass through the high-speed fan during this process. When the high-speed fan stops running, part of the curing agent will inevitably remain inside the high-speed fan, which will increase the burden on the high-speed fan when it starts to rotate next time, and increase the probability of the high-speed fan malfunctioning due to blockage.

[0005] Therefore, a slurry and curing agent mixer is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a mud and curing agent mixer in order to solve the above problems, thereby improving the problem that the curing agent in the existing mud and curing agent mixer is easily retained inside the high-speed fan, which increases the rotation burden at the next start.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions, which are a mud and curing agent mixer, comprising: a mud storage tank, the bottom of which is fixedly connected to and communicated with a mud pump, one end of which is fixedly connected to and communicated with a mud pipe, and one end of which is fixedly connected to and communicated with an auger conveyor; and a curing agent adding mechanism, which is fixedly connected to and communicated with the surface of the mud pipe.

[0008] Preferably, the curing agent adding mechanism includes a curing agent storage tank, the bottom of the curing agent storage tank is fixedly connected and communicated with a transfer box, one end of the transfer box is fixedly connected and communicated with a high-speed fan, a filter is embedded and installed at the connection between the transfer box and the high-speed fan, the other end of the transfer box is fixedly connected and communicated with a material guide pipe fixedly connected and communicated with the mud pipe, and the design of connecting the high-speed fan and the curing agent storage tank together through the transfer box can enable the high-speed fan to generate high-pressure gas outside the transfer box, and then the high-pressure gas will entrain the curing agent falling into the transfer box into the mud pipe, which does not require the curing agent to contact with the high-speed fan, reducing the probability of curing agent retention inside the high-speed fan, and adopting the design of the filter, which can prevent the curing agent from entering the interior of the high-speed fan. At this time, no matter whether the high-speed fan is running or not, the curing agent will not enter the interior, so that the high-speed fan always operates in a clean state, reducing the burden and failure rate of the high-speed fan operation.

[0009] Preferably, the curing agent adding mechanism also includes a servo motor fixedly connected to one end of the transfer box, the output shaft of the servo motor extends into the interior of the transfer box, the output shaft of the servo motor is fixedly connected to a rotating shaft, the surface of the rotating shaft is fixedly connected to a scraper distributed in a ring shape around the axis of the rotating shaft, and a rotary material design is adopted, which can limit the discharge amount of the curing agent to achieve the probability of limiting the ratio of the curing agent to the mud, thereby ensuring that the solidified mud reaches a preset state.

[0010] Preferably, one end of the filter is in contact with the adjacent scraper, and the rotating shaft is arranged above the filter. During the rotation of the scraper, the scraper can also circulate and scrape off the curing agent adhered to the surface of the filter, so that the surface of the filter always remains unobstructed to reduce the resistance of the gas passing through the filter.

[0011] Preferably, the shape of the interior of the transfer box is cylindrical, the axis of the rotating shaft coincides with the center point of the transfer box, and the end of the scraper away from the rotating shaft contacts the inner wall of the transfer box, which can reduce the probability of a gap between the transfer box and the scraper, so as to ensure the flow rate of high-pressure gas entering the inside of the guide tube.

[0012] Preferably, sealed bearings are embedded in both ends of the rotating shaft, and the sealed bearings are embedded in the interior of the transfer box, which can seal the gap between the rotating shaft and the transfer box, prevent the curing agent from entering the gap between the sealed rotating shaft and the transfer box, and reduce the resistance during the rotation of the rotating shaft.

[0013] Preferably, the connection point between the material guide tube and the transfer box is connected to the lowest point inside the transfer box, which can reduce the retention rate of the curing agent inside the transfer box, thereby improving the effective utilization rate of the curing agent.

[0014] Preferably, the lowest point of the guide pipe is fixedly connected to and communicated with the mud pipe, and the vertical cross-section of the guide pipe is L-shaped, which can reduce the probability of mud entering the inside of the guide pipe to ensure that the curing agent can enter the mud pipe normally.

[0015] The beneficial effects of the utility model are:

[0016] 1. The design of connecting the high-speed fan and the curing agent storage tank through a transfer box enables the high-speed fan to generate high-pressure gas outside the transfer box. The high-pressure gas then carries the curing agent in the transfer box into the mud pipe. This does not require the curing agent to come into contact with the high-speed fan, reducing the probability of curing agent being retained inside the high-speed fan. In addition, the filter design can prevent the curing agent from entering the high-speed fan. At this time, no matter whether the high-speed fan is running or not, the curing agent will not enter the interior of the high-speed fan, so that the high-speed fan always operates in a clean state, reducing the burden and failure rate of the high-speed fan operation;

[0017] 2. The design of rotating material feeding is adopted, which can limit the discharge amount of curing agent, so as to achieve the probability of limiting the ratio of curing agent to mud, thereby ensuring that the solidified mud reaches the preset state. In addition, during the rotation of the scraper, the scraper can also cyclically scrape off the curing agent adhering to the surface of the filter, so that the surface of the filter is always kept unobstructed, thereby reducing the resistance of gas passing through the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the curing agent adding mechanism in the present invention;

[0020] Figure 3 This is a schematic cross-sectional view of a partially cutaway structure of the curing agent adding mechanism in the present invention;

[0021] Figure 4 This is an exploded schematic diagram of a partially cutaway structure of the curing agent adding mechanism in the present invention.

[0022] In the figure: 1. Mud storage tank; 2. Mud pump; 3. Mud pipe; 4. Auger conveyor; 5. Curing agent adding mechanism; 51. Curing agent storage tank; 52. Transfer box; 53. High-speed fan; 54. Filter; 55. Material guide pipe; 56. Servo motor; 57. Rotating shaft; 58. Scraper; 59. Sealed bearing. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] When implementing: Figure 1-4 As shown, a mud and curing agent mixer includes: a mud storage tank 1, the bottom of the mud storage tank 1 is fixedly connected and connected to a mud pump 2, one end of the mud pump 2 is fixedly connected and connected to a mud pipe 3, one end of the mud pipe 3 is fixedly connected and connected to an auger conveyor 4; a curing agent adding mechanism 5, the curing agent adding mechanism 5 is fixedly connected and connected to the surface of the mud pipe 3.

[0025] like Figure 2 、 Figure 3 and Figure 4 As shown, the curing agent adding mechanism 5 includes a curing agent storage tank 51, the bottom of the curing agent storage tank 51 is fixedly connected and communicated with a transfer box 52, one end of the transfer box 52 is fixedly connected and communicated with a high-speed fan 53, a filter 54 is embedded and installed at the connection point between the transfer box 52 and the high-speed fan 53, the other end of the transfer box 52 is fixedly connected and communicated with a guide pipe 55 fixedly connected and communicated with the mud pipe 3; the connection point between the guide pipe 55 and the transfer box 52 is connected to the lowest point inside the transfer box 52; the lowest point of the guide pipe 55 is fixedly connected and communicated with the mud pipe 3, and the vertical cross-section of the guide pipe 55 is L-shaped;

[0026] The design of connecting the high-speed fan 53 and the curing agent storage tank 51 through the transfer box 52 enables the high-speed fan 53 to generate high-pressure gas outside the transfer box 52, and then the high-pressure gas will carry the curing agent falling into the transfer box 52 into the mud pipe 3. This does not require the curing agent to come into contact with the high-speed fan 53, reducing the probability of curing agent being retained inside the high-speed fan 53. In addition, the design of the filter 54 can prevent the curing agent from entering the high-speed fan 53. At this time, no matter whether the high-speed fan 53 is running or not, the curing agent will not enter the interior, so that the high-speed fan 53 always operates in a clean state, reducing the burden and failure rate of the operation of the high-speed fan 53.

[0027] like Figure 3 and Figure 4As shown, the curing agent adding mechanism 5 also includes a servo motor 56 fixedly connected to one end of the transfer box 52, and the output shaft of the servo motor 56 passes through the interior of the transfer box 52. The output shaft of the servo motor 56 is fixedly connected to a rotating shaft 57, and the surface of the rotating shaft 57 is fixedly connected to a scraper 58 distributed in a ring around the axis of the rotating shaft 57; one end of the filter 54 is in contact with the adjacent scraper 58, and the rotating shaft 57 is arranged above the filter 54; the shape of the interior of the transfer box 52 is cylindrical, the axis of the rotating shaft 57 coincides with the center point of the transfer box 52, and the end of the scraper 58 away from the rotating shaft 57 is in contact with the inner wall of the transfer box 52; both ends of the rotating shaft 57 are embedded with sealed bearings 59, and the sealed bearings 59 are embedded and installed in the interior of the transfer box 52.

[0028] When the utility model is in use, the staff first puts the mud and the curing agent into the mud storage tank 1 and the curing agent storage tank 51 respectively, and then manually starts the mud pump 2, the auger conveyor 4, the high-speed fan 53 and the servo motor 56 at the same time. The mud pump 2 sucks the mud from the mud storage tank 1 into the mud pipe 3, and at the same time the servo motor 56 drives the rotating shaft 57 to rotate, and the rotating shaft 57 drives all the scrapers 58 to rotate. When the gap between the two adjacent scrapers 58 is connected to the curing agent storage tank 51, the curing agent loses its obstruction and falls into the gap between the two adjacent scrapers 58 under the action of gravity. Then the two scrapers 58 cooperate with the transfer box 52 and the rotating shaft 57 to form a movable closed cavity, which will solidify the solidified material. The curing agent is guided downward in an arc, and at the same time, the high-speed fan 53 stirs the air to form an airflow and guides the airflow into the transfer box 52 at high speed. In the process of the high-pressure gas passing through the transfer box 52, the high-pressure gas can take away the curing agent between the two adjacent scrapers 58 on the flow path. The high-pressure gas entrains the curing agent into the guide pipe 55 and enters the mud pipe 3 along the guide pipe 55. At this time, the curing agent and the mud are mixed together, and then the curing agent and the mud are guided into the auger conveyor 4 by the mud pipe 3. The auger conveyor 4 spirally stirs the curing agent and the mud, which not only plays the role of conveying materials, but also makes the curing agent and the mud mixed more evenly, so that the mud gradually solidifies. Finally, the solidified mud is discharged to the outside by the auger conveyor 4.

[0029] It should be noted that the mud storage tank 1, mud pump 2, auger conveyor 4, curing agent storage tank 51, high-speed fan 53, filter 54, servo motor 56, sealed bearing 59 and curing agent described above are all relatively mature devices in existing technology applications. The specific models can be selected according to actual needs. At the same time, the mud pump 2, auger conveyor 4, high-speed fan 53 and servo motor 56 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A slurry and curing agent mixer, characterized in that: include: A mud storage tank (1), wherein the bottom of the mud storage tank (1) is fixedly connected to and communicated with a mud pump (2), one end of the mud pump (2) is fixedly connected to and communicated with a mud pipe (3), and one end of the mud pipe (3) is fixedly connected to and communicated with an auger conveyor (4); a curing agent adding mechanism (5), the curing agent adding mechanism (5) being fixedly connected to and in communication with the surface of the mud pipe (3); The curing agent adding mechanism (5) comprises a curing agent storage tank (51), the bottom of the curing agent storage tank (51) is fixedly connected and communicated with a transfer box (52), one end of the transfer box (52) is fixedly connected and communicated with a high-speed fan (53), a filter (54) is embedded and installed at the connection point between the transfer box (52) and the high-speed fan (53), and the other end of the transfer box (52) is fixedly connected and communicated with a material guide pipe (55) fixedly connected and communicated with the mud pipe (3).

2. A slurry and curing agent mixer according to claim 1, characterized in that: The curing agent adding mechanism (5) further comprises a servo motor (56) fixedly connected to one end of the transfer box (52), the output shaft of the servo motor (56) passing through the interior of the transfer box (52), the output shaft of the servo motor (56) being fixedly connected to a rotating shaft (57), and the surface of the rotating shaft (57) being fixedly connected to a scraper (58) distributed in an annular shape around the axis of the rotating shaft (57).

3. A slurry and curing agent mixer according to claim 2, characterized in that: One end of the filter screen (54) contacts the adjacent scraper (58), and the rotating shaft (57) is arranged above the filter screen (54).

4. The slurry and curing agent mixer according to claim 2, characterized in that: The interior of the transfer box (52) is cylindrical in shape, the axis of the rotating shaft (57) coincides with the center point of the transfer box (52), and the end of the scraper (58) away from the rotating shaft (57) contacts the inner wall of the transfer box (52).

5. The slurry and curing agent mixer according to claim 2, characterized in that: Both ends of the rotating shaft (57) are embedded with sealed bearings (59), and the sealed bearings (59) are embedded in the interior of the transfer box (52).

6. The slurry and curing agent mixer according to claim 1, characterized in that: The connecting point between the material guiding tube (55) and the transfer box (52) is connected to the lowest point inside the transfer box (52).

7. The slurry and curing agent mixer according to claim 1, characterized in that: The lowest point of the material guide pipe (55) is fixedly connected to and communicates with the mud pipe (3), and the vertical cross-section of the material guide pipe (55) is L-shaped.

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