Pouring mold for track prefabricated slab

Abstract

The utility model relates to the technical field of concrete pouring, in particular to a pouring mold for a track precast slab, which comprises a pouring cavity, a slurry outlet arranged below the pouring cavity, a conveying pipeline connected with the slurry outlet, and a first conveying pipe vertically arranged at the lower end of the slurry outlet and a second conveying pipe horizontally arranged. The first throttling part is connected with the first conveying pipe, is close to one side of the slurry outlet, and comprises a double-open butterfly valve arranged in the first conveying pipe; the slurry storage chamber is connected with the lower portion of the second conveying pipe, is close to the first conveying pipe and comprises a slurry storage cavity formed in the lower portion of the second conveying pipe and a slurry flowing opening communicated with the lower portion of the second conveying pipe. The second throttling part is connected with the second conveying pipe and located on the side close to the slurry output port. The second throttling part comprises a rotary throttling plate arranged in the second conveying pipe. According to the utility model, the two throttling parts and the slurry storage chamber are arranged to cut off slurry, so that the sealing performance is improved, and slurry leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pouring, in particular to a pouring mould for a track prefabricated plate. Background Art

[0002] In the process of concrete casting, traditionally, the common method to solve the problem of flow interruption of self-compacting concrete is to use a plug-in type flow interruption method. This method sets a movable plug-in plate during the pouring process to prevent the flow of self-compacting concrete. However, due to long-term and frequent pouring, dirty cement slurry and fine aggregate gravel are easily accumulated between the plug-ins, which not only makes the closing operation of the plug-in plate difficult, but also has poor sealing after closing. This situation often leads to leakage, which not only pollutes the track plate, but also has a negative impact on the quality of the self-compacting concrete.

[0003] Chinese patent publication number CN212077502U discloses a CRTSI II type slab track filling layer self-compacting concrete pouring device, which is used to solve the problems of leakage and difficult to control flow rate during the pouring process. The provided CRTSI II type slab track filling layer self-compacting concrete pouring device includes a pouring funnel, and a handle butterfly valve is provided on the discharge port of the pouring funnel. The opening and closing degree of the valve can be adjusted by simply turning the butterfly valve handle. When the valve is opened and closed to the set degree, it can be locked by the butterfly valve handle. Therefore, compared with the plug-in valve body structure, the flow rate of the discharge port of the pouring funnel is easy to control, and the operation is convenient and labor-saving, and the stability is high.

[0004] In the above technical solution, the pouring funnel is sealed only by a butterfly valve handle, and the sealing performance is not high. Part of the self-compacting concrete slurry can easily flow into the pipeline through the gap of the butterfly valve handle. Utility Model Content

[0005] The utility model aims to provide a casting mould for a track prefabricated plate, so as to overcome the problem of concrete pouring device in the prior art that has poor sealing performance and causes slurry leakage.

[0006] The technical solution of the utility model is: a casting mold for track prefabricated panels, comprising:

[0007] A pouring cavity is used to store pouring slurry, and a slurry outlet is arranged below the pouring cavity;

[0008] A delivery pipeline connected to the slurry outlet for delivering the casting slurry stored in the pouring cavity, the delivery pipeline comprising a first delivery pipe vertically arranged at the lower end of the slurry outlet and a second delivery pipe horizontally arranged;

[0009] A first throttling part, connected to the first conveying pipe and close to the slurry outlet, includes a double-open butterfly valve arranged in the first conveying pipe, and switches the slurry flow state of the conveying pipeline through the position state of the butterfly valve, including slurry flow and cutoff;

[0010] A slurry storage chamber is connected to the lower part of the second conveying pipe and is close to the first conveying pipe, and comprises a slurry storage chamber arranged at the lower part of the second conveying pipe and a slurry flow port communicating with the lower part of the second conveying pipe. Under the slurry flow condition, the slurry flow port is closed to cut off the communication between the slurry storage chamber and the second conveying pipe so that the casting slurry is conveyed through the second conveying pipe; under the cut-off condition, the slurry flow port is opened so that the slurry in the pipeline flows to the slurry storage chamber;

[0011] The second throttling portion is connected to the second conveying pipe and is located on a side close to the slurry outlet. The second throttling portion includes a rotating throttling plate arranged inside the second conveying pipe. Under the cut-off condition, the plate edge of the rotating throttling plate is connected to the inner wall of the second conveying pipe to cut off the flow of slurry.

[0012] Furthermore, the double-opening butterfly valve comprises a first butterfly valve part and a second butterfly valve part:

[0013] The first butterfly valve part includes a first butterfly, a first rotating shaft fixedly connected to the first butterfly for driving the first butterfly to rotate, and a first handle connected to the first rotating shaft for controlling the rotation of the first rotating shaft;

[0014] The second butterfly valve part includes a second butterfly, a second rotating shaft fixedly connected to the second butterfly for driving the second butterfly to rotate, and a second handle connected to the second rotating shaft for controlling the rotation of the second rotating shaft;

[0015] Among them, when the first butterfly blade and the second butterfly blade are in the slurry flow state, the butterfly blade planes are parallel to the slurry flow direction, and under the truncation condition, the butterfly blade planes are perpendicular to the slurry flow direction, and under the truncation condition, the projection shape of the first butterfly blade and the second butterfly blade on the cross section inside the first conveying pipe is the same as the shape of the cross section inside the first conveying pipe.

[0016] Furthermore, the first rotating shaft and the second rotating shaft are connected via gears, so that a single handle can control the two rotating shafts to rotate.

[0017] Furthermore, a slurry storage outlet is provided at the lower portion of the slurry storage chamber.

[0018] Furthermore, the second throttling unit includes:

[0019] A third rotating shaft is arranged on a side of the slurry flow port close to the slurry discharge port;

[0020] The rotating throttle plate is connected to the third rotating shaft and is used to change the relative position of the rotating throttle plate and the second conveying pipe through the rotation of the third rotating shaft. The position of the rotating throttle plate includes: a first position in which the rotating throttle plate is connected to the slurry flow port of the second conveying pipe to close the slurry flow port and a second position in which the rotating throttle plate is connected to the inner side wall of the second conveying pipe to cut off the flow of casting slurry in the second conveying pipe, and in the second position, the rotating throttle plate is not connected to the slurry flow port to open the slurry flow port.

[0021] Furthermore, the conveying pipeline also includes an intermediate conveying pipe, both ends of which are respectively connected to the slurry outlet of the first conveying pipe and the slurry inlet of the second conveying pipe.

[0022] Furthermore, the side of the second conveying pipe close to the ground is set as a horizontally arranged slurry conveying plane, and the third rotation axis is perpendicular to the flow direction of the pouring slurry in the second conveying pipe and is located on the plane;

[0023] The rotating throttle plate is connected to the third rotating shaft. The rotating throttle plate is a planar structure. The shape of the rotating throttle plate matches the cross-section of the second conveying pipe to cut off the flow of the casting slurry in the second conveying pipe. The slurry flow port is located at the lower part of the rotating throttle plate where it is connected to the slurry delivery plane and is connected to the rotating throttle plate to close the slurry flow port through the rotating throttle plate and cut off the connection between the slurry storage chamber and the second conveying pipe.

[0024] Furthermore, the third rotating shaft is provided with a third handle.

[0025] Furthermore, a liquid level meter is provided inside the slurry storage chamber to monitor the liquid level height in the slurry storage chamber.

[0026] Furthermore, a first gear is disposed on the first rotating shaft, and a second gear is disposed on the second rotating shaft, and the first gear and the second gear cooperate with each other.

[0027] Compared with the prior art, the utility model has the beneficial effect that, by providing the first throttling part and the second throttling part, the pouring slurry is effectively retained in the pouring cavity, and the internal sealing is strictly ensured, thereby greatly reducing the leakage of slurry. At the same time, the pouring slurry that seeps out is stored in the slurry storage cavity, ensuring that the external environment is clean and will not pollute the prefabricated track plate. Compared with the plug valve body structure, the flow rate of the pouring cavity outlet is easy to control.

[0028] Furthermore, the utility model arranges a first butterfly valve and a second butterfly valve in the first throttling part. The valve opening and closing can be completed by rotating the first butterfly valve and the second butterfly valve. The flow rate of the slurry outlet of the perfusion chamber is easy to control, the inside of the perfusion chamber can be sealed, and the operation is more convenient and labor-saving. At the same time, by opening only one of the first butterfly valve and the second butterfly valve, the flow rate of the slurry can be effectively reduced, thereby further realizing precise control of the slurry amount and ensuring the accuracy of flow control of slurry cutoff.

[0029] Furthermore, in the utility model, the staff can control the first butterfly valve and the second butterfly valve by operating a single handle to complete the coordinated rotation of the first rotating shaft and the second rotating shaft, which effectively reduces the complexity of operation and improves work efficiency. In addition, when a single-side butterfly valve is stuck, it will not affect the normal opening and closing of the other butterfly valve, effectively reducing the risk of leakage.

[0030] Furthermore, the utility model provides a slurry storage outlet at the lower part of the slurry storage chamber. Under the cut-off condition, part of the slurry flows into the slurry storage chamber and then flows out through the slurry storage outlet, thereby ensuring the continuous progress of the slurry pouring work. At the same time, if the cut-off is required for a long time, the solidification speed of the slurry can be reduced by pouring water or other barrier liquid into the slurry storage chamber.

[0031] Furthermore, the utility model is provided with a third rotating shaft to drive the rotating throttle plate to rotate, so as to conveniently control the rotating throttle plate to rotate under the cut-off condition and the slurry flow condition, thereby controlling the normal conveying of the casting slurry and the seepage of part of the casting slurry.

[0032] Furthermore, the utility model is provided with an intermediate conveying pipe, which can realize a smooth transition of the pouring slurry from vertical conveying to horizontal conveying, so that the resistance of the slurry during the conveying process is reduced, thereby reducing the conveying power demand, helping to reduce the energy consumption during the pouring slurry conveying process, and effectively improving the continuity and stability of the slurry conveying.

[0033] Furthermore, the utility model provides a third handle on the third rotating shaft, so that the rotating throttle plate is more stable and controlled during the movement, which greatly improves the rotation accuracy and greatly improves the convenience of operation.

[0034] Furthermore, the utility model can monitor the liquid level height in the slurry storage chamber in real time and accurately by providing a liquid level meter, ensuring that there is a certain space in the slurry storage chamber to store leaked slurry, and when the liquid level reaches a set height, the slurry can be exported through an alarm prompt, thereby improving the degree of automation.

[0035] Furthermore, in the utility model, the first gear and the second gear can achieve more efficient power transmission during the transmission process of cooperating with each other, thereby improving the overall transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0037] Figure 1 This is a schematic diagram of a casting mold body for a track prefabricated plate according to an embodiment of the utility model;

[0038] Figure 2 This is a front view of the first throttling portion of an embodiment of the utility model;

[0039] Figure 3 It is an enlarged schematic diagram of the second throttling part and the pulp storage chamber structure of the embodiment of the utility model;

[0040] Figure 4 This is a side view of a double-opening butterfly valve according to an embodiment of the utility model;

[0041] In the figure: 1, perfusion chamber; 21, first delivery pipe; 22, second delivery pipe; 23, intermediate delivery pipe; 3, first throttling part; 311, first butterfly; 312, first rotating shaft; 313, first handle; 314, first gear; 321, second butterfly; 322 second rotating shaft; 323, second handle; 324, second gear; 4, slurry storage chamber; 401, slurry flow port; 402, liquid level meter; 403; slurry storage outlet; 5, second throttling part; 511, rotary throttling plate; 512, third rotating shaft; 513, third handle; 600, sealing plate. DETAILED DESCRIPTION

[0042] In order to make the purpose and advantages of the utility model more clearly understood, the utility model is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0043] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0044] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0045] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0046] See also Figure 1-Figure 4 As shown, it is a schematic diagram of a casting mold body for a track prefabricated plate according to an embodiment of the utility model, comprising:

[0047] A perfusion chamber 1, with a slurry outlet provided below the perfusion chamber 1;

[0048] The conveying pipeline 2 is connected to the slurry outlet, and the conveying pipeline 2 includes a first conveying pipe 21 vertically arranged at the lower end of the slurry outlet and a second conveying pipe 22 horizontally arranged;

[0049] The first throttling part 3 is connected to the first conveying pipe 21 and is close to one side of the slurry outlet. The first throttling part includes a double-open butterfly valve arranged in the first conveying pipe 21. The slurry flow state of the conveying pipeline is switched by the position state of the butterfly valve. The slurry flow state of the conveying pipeline includes slurry flow and cutoff.

[0050] The pulp storage chamber is connected to the lower part of the second conveying pipe 22 and is close to the first conveying pipe 21, and includes a pulp storage chamber 4 arranged at the lower part of the second conveying pipe 22 and a pulp flow port 401 penetrating the lower part of the second conveying pipe 22;

[0051] The second throttling portion 5 is connected to the second conveying pipe 22 and is located on a side close to the slurry outlet. The second throttling portion 5 includes a rotating throttling plate 511 arranged inside the second conveying pipe 22. Under the cut-off condition, the plate edge of the rotating throttling plate 511 is connected to the inner wall of the second conveying pipe 22 to cut off the flow of slurry.

[0052] When pouring slurry, the double-opening butterfly valve is in an open state, the delivery pipeline can deliver the pouring slurry, and the edge of the rotating throttle plate 511 is connected to the inner wall of the second delivery pipe 22.

[0053] In practice, the shape and size of the rotating throttle plate 511 are not specifically limited, as long as the rotating throttle plate 511 can match the cross-section of the second conveying pipe 22 and the shape of the slurry flow outlet 401 of the slurry storage chamber, and no further details will be given here.

[0054] Specifically, the double-open butterfly valve includes a first butterfly valve part and a second butterfly valve part: the first butterfly valve part includes a first butterfly, a first rotating shaft 312 fixedly connected to the first butterfly 311 to drive the first butterfly 311 to rotate, and a first handle 313 connected to the first rotating shaft 312 to control the rotation of the first rotating shaft 312; the second butterfly valve part includes a second butterfly 321, a second rotating shaft 322 fixedly connected to the second butterfly 321 to drive the second butterfly 321 to rotate, and a second handle 323 connected to the second rotating shaft 322 to control the rotation of the second rotating shaft 322. Under the truncation condition, the plane of the first butterfly 311 in the first butterfly valve and the plane of the second butterfly 321 in the second butterfly valve are both perpendicular to the slurry flow direction, and the projection shape of the first butterfly 311 and the second butterfly 321 in the cross section of the first conveying pipe 21 is the same as the shape of the cross section of the first conveying pipe 21. Under the slurry flow condition, the plane of the first butterfly 311 and the plane of the second butterfly 321 are both parallel to the slurry flow direction.

[0055] In implementation, generally, the first rotating shaft 312 and the second rotating shaft 322 are parallel to the cross-section of the first conveying pipe 21, the first rotating shaft 312 and the second rotating shaft 322 are parallel, and a sealing plate 600 is arranged between the two rotating shafts to prevent the slurry from flowing between the first rotating shaft 312 and the second rotating shaft 322. The structure of the first rotating shaft 312 and the second rotating shaft 322 is not specifically limited. As long as the first butterfly 311 and the second butterfly 321 can be controlled under the cut-off condition to achieve the interception of the pouring slurry, it will not be repeated here.

[0056] Specifically, the first rotating shaft 312 and the second rotating shaft 322 are connected through gear cooperation, so that a single handle can control the two rotating shafts to rotate.

[0057] Specifically, a first gear 314 is disposed on the first rotating shaft 312, and a second gear 324 is disposed on the second rotating shaft 322. During the transmission process in which the first gear 314 and the second gear 324 cooperate with each other, more efficient power transmission can be achieved, thereby improving the overall transmission efficiency.

[0058] Under the slurry flow condition, the rotation of a single handle drives the first rotating shaft 312 to rotate, the first rotating shaft 312 drives the first gear 314 to rotate, the first gear 314 meshes with the second gear 324 to drive the second gear 324 to rotate, and the second gear 324 drives the second rotating shaft 322 to rotate.

[0059] In practice, the shape and size of a single handle are not specifically limited, as long as it can control the rotation of the first rotation axis 312 and the second rotation axis 322, and no further details will be given here.

[0060] Specifically, a slurry outlet 403 is provided at the lower part of the slurry storage cavity 4 of the slurry storage room. Under the cut-off condition, part of the slurry flows into the slurry storage cavity 4 and then flows out through the slurry outlet 403, thereby ensuring the continuous slurry pouring work.

[0061] Specifically, the second throttling part 5 includes: a third rotating shaft 512, which is arranged on a side of the slurry outlet 401 close to the slurry outlet; and a rotating throttling plate 511, which is connected to the third rotating shaft 512, and is used to change the relative position of the rotating throttling plate 511 and the second conveying pipe 22 through the rotation of the third rotating shaft 512. Under the slurry flow condition, the third rotating shaft 512 drives the rotating throttling plate 511 to rotate to the first position, so that the rotating throttling plate 511 is connected to the slurry outlet 401 of the second conveying pipe 22 to close the slurry outlet 401, which is convenient for the normal conveying of the pouring slurry. Under the cut-off condition, the third rotating shaft 512 rotates and drives the rotating throttling plate 511 to rotate to the second position, so that the rotating throttling plate 511 is connected to the inner side wall of the second conveying pipe 22 and is not connected to the slurry outlet 401, thereby opening the slurry outlet 401 and storing part of the leaked pouring slurry.

[0062] Specifically, the conveying pipeline further includes an intermediate conveying pipe 23, the two ends of which are respectively connected to the slurry outlet of the first conveying pipe 21 and the slurry inlet of the second conveying pipe 22. The intermediate conveying pipe 23 can realize a smooth transition from vertical conveying to horizontal conveying of the pouring slurry, and can transition the shape change from the first conveying pipe 21 to the second conveying pipe 22. In implementation, the shape and size of the intermediate conveying pipe 23 are not specifically limited, as long as it can be connected to the first conveying pipe 21 and the second conveying pipe 22, and the connection method is also not limited.

[0063] Specifically, the side of the second delivery pipe 22 close to the ground is set as a horizontally arranged slurry delivery plane, and the third rotating shaft 512 is perpendicular to the flow direction of the slurry in the second delivery pipe 22 and is located on the plane. The rotating throttle plate 511 is connected to the third rotating shaft 512, and the rotating throttle plate 511 is a plane structure. The shape of the rotating throttle plate 511 matches the cross-section of the second delivery pipe 22 to cut off the flow of the slurry in the second delivery pipe 22. The slurry flow port 401 is located at the lower part of the state where the rotating throttle plate 511 is connected to the slurry delivery plane and is connected to the rotating throttle plate 511 to close the slurry flow port 401 through the rotating throttle plate 511 and cut off the connection between the slurry storage chamber 4 and the second delivery pipe 22.

[0064] Specifically, the third rotation axis 512 is provided with a third handle 513. The third handle 513 can significantly improve the convenience of operation, making the control of the third rotation axis 512 more flexible and accurate. In implementation, the shape and size of the third handle 513 are not specifically limited, as long as it can control the rotation of the third rotation axis 512.

[0065] Specifically, a liquid level meter 402 is provided inside the slurry storage chamber 4, which can accurately monitor the liquid level height in the slurry storage chamber 4 in real time to ensure that there is a certain space in the slurry storage chamber 4 to store the leaked slurry.

[0066] In implementation, the liquid level measurement and liquid level output modules included in the liquid level meter 402 are not specifically limited, as long as they can monitor the liquid level and output the liquid level data. For example, the liquid level meter 402 may include a liquid level measurement sensor and a liquid level data output module, the liquid level measurement sensor is used to obtain the liquid level data measurement value, and the liquid level data output module is used to output the liquid level data measurement value and send a corresponding alarm signal.

[0067] Working process and principle:

[0068] During the casting process of the casting mold for the track precast plate, when the slurry needs to be cut off, the double-open butterfly valve in the first throttling part 3 in the first conveying pipe 21 is controlled to be set to a closed state, and the slurry storage outlet 403 in the slurry storage chamber is in a closed state. The third handle 513 is controlled to rotate, and the third handle 513 drives the third rotating shaft 512 to rotate, and the third rotating shaft 512 drives the rotating throttle plate 511 to rotate to the second position, so that the rotating throttle plate 511 is connected to the inner wall of the second conveying pipe 22 and is not connected to the slurry flow port 401, and the flow of slurry in the second conveying pipe 22 is cut off, and the slurry flow port 401 is opened to store part of the leaked casting slurry. After the cut-off, the double-open butterfly valve in the first conveying pipe 21 is kept closed, and the rotating throttle plate 511 of the second conveying pipe 22 is in the second position to achieve the slurry cut-off. If part of the slurry in the first delivery pipe 21 flows out through the gap of the double-open butterfly valve, it will flow into the slurry storage chamber 4 set in the lower part of the second delivery pipe 22 along the first delivery pipe 21 and the second delivery pipe 22. At this time, the liquid level meter 402 set in the slurry storage chamber 4 starts to monitor the liquid level in the slurry storage chamber 4 in real time, and judges whether to open the slurry storage outlet 403 to let the leaked slurry flow out according to whether the liquid level exceeds the height of the slurry storage chamber 4, so as to ensure that there is a certain space in the slurry storage chamber 4 to store the leaked slurry.

[0069] When slurry output is required, the third handle 513 is controlled to rotate, the third handle 513 drives the third rotating shaft 512 to rotate, and the third rotating shaft 512 drives the rotating throttle plate 511 to rotate to the first position, so that the rotating throttle plate 511 is not connected to the inner side wall of the second conveying pipe 22 and is connected to the slurry flow port 401 of the second conveying pipe 22 to close the slurry flow port 401 to ensure the flow of slurry in the second conveying pipe 22. Then the first handle 313 and / or the second handle 323 are rotated, and the rotation of the handle drives the first rotating shaft 312 and the second rotating shaft 322 to rotate. The first rotating shaft 312 drives the first butterfly 311 to rotate so that the plane of the first butterfly 311 is parallel to the slurry flow direction, and the second rotating shaft 322 drives the second butterfly 321 to rotate so that the plane of the second butterfly 321 is parallel to the slurry flow direction, and the casting slurry stored in the pouring chamber 1 flows out through the slurry outlet below the pouring chamber 1, and flows through the first conveying pipe 21, the middle conveying pipe 23, and the second conveying pipe 22 for casting.

[0070] It can be understood that during the pouring process of the track precast panels, since the track precast panels are long strip structures, several precast panels can usually be poured at the same time during the pouring process to improve the pouring efficiency. Therefore, the second conveying pipes of the utility model can be provided with several pieces, which are connected to the lower part of the first conveying pipe through the middle conveying pipe, and the second throttling part can be provided on the side close to the track precast panels to accurately control the amount of pouring slurry.

[0071] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

Claims

1. A casting mold for a track prefabricated plate, characterized in that: include: A pouring cavity is used to store pouring slurry, and a slurry outlet is arranged below the pouring cavity; A delivery pipeline connected to the slurry outlet for delivering the casting slurry stored in the pouring cavity, the delivery pipeline comprising a first delivery pipe vertically arranged at the lower end of the slurry outlet and a second delivery pipe horizontally arranged; A first throttling part, connected to the first conveying pipe and close to the slurry outlet, includes a double-open butterfly valve arranged in the first conveying pipe, and switches the slurry flow state of the conveying pipeline through the position state of the butterfly valve, including slurry flow and cutoff; A slurry storage chamber is connected to the lower part of the second conveying pipe and is close to the first conveying pipe, and comprises a slurry storage chamber arranged at the lower part of the second conveying pipe and a slurry flow port communicating with the lower part of the second conveying pipe. Under the slurry flow condition, the slurry flow port is closed to cut off the communication between the slurry storage chamber and the second conveying pipe so that the casting slurry is conveyed through the second conveying pipe; under the cut-off condition, the slurry flow port is opened so that the slurry in the pipeline flows to the slurry storage chamber; The second throttling portion is connected to the second conveying pipe and is located on a side close to the slurry outlet. The second throttling portion includes a rotating throttling plate arranged inside the second conveying pipe. Under the cut-off condition, the plate edge of the rotating throttling plate is connected to the inner wall of the second conveying pipe to cut off the flow of slurry.

2. The casting mold for track prefabricated slab according to claim 1, characterized in that: The double-opening butterfly valve comprises a first butterfly valve part and a second butterfly valve part: The first butterfly valve part includes a first butterfly, a first rotating shaft fixedly connected to the first butterfly for driving the first butterfly to rotate, and a first handle connected to the first rotating shaft for controlling the rotation of the first rotating shaft; The second butterfly valve part includes a second butterfly, a second rotating shaft fixedly connected to the second butterfly for driving the second butterfly to rotate, and a second handle connected to the second rotating shaft for controlling the rotation of the second rotating shaft; Among them, when the first butterfly blade and the second butterfly blade are in the slurry flow state, the butterfly blade planes are parallel to the slurry flow direction, and under the truncation condition, the butterfly blade planes are perpendicular to the slurry flow direction, and under the truncation condition, the projection shape of the first butterfly blade and the second butterfly blade on the cross section inside the first conveying pipe is the same as the shape of the cross section inside the first conveying pipe.

3. The casting mold for track prefabricated slab according to claim 2, characterized in that: The first rotating shaft is connected to the second rotating shaft through gear cooperation, so that a single handle can control the two rotating shafts to rotate.

4. The casting mold for track prefabricated slab according to claim 1, characterized in that: A slurry storage outlet is arranged at the lower part of the slurry storage chamber.

5. The casting mold for track prefabricated slab according to claim 1, characterized in that: The second throttling part comprises: A third rotating shaft is arranged on a side of the slurry flow port close to the slurry discharge port; The rotating throttle plate is connected to the third rotating shaft and is used to change the relative position of the rotating throttle plate and the second conveying pipe through the rotation of the third rotating shaft. The position of the rotating throttle plate includes: a first position in which the rotating throttle plate is connected to the slurry flow port of the second conveying pipe to close the slurry flow port and a second position in which the rotating throttle plate is connected to the inner side wall of the second conveying pipe to cut off the flow of casting slurry in the second conveying pipe, and in the second position, the rotating throttle plate is not connected to the slurry flow port to open the slurry flow port.

6. The casting mold for track prefabricated slab according to claim 1, characterized in that: The conveying pipeline also includes an intermediate conveying pipe, two ends of which are respectively connected to the slurry outlet of the first conveying pipe and the slurry inlet of the second conveying pipe.

7. The casting mold for track prefabricated slab according to claim 5, characterized in that: The side of the second conveying pipe close to the ground is set as a horizontal slurry conveying plane, and the third rotation axis is perpendicular to the flow direction of the pouring slurry in the second conveying pipe and is located on the plane; The rotating throttle plate is connected to the third rotating shaft. The rotating throttle plate is a planar structure. The shape of the rotating throttle plate matches the cross-section of the second conveying pipe to cut off the flow of the casting slurry in the second conveying pipe. The slurry flow port is located at the lower part of the rotating throttle plate where it is connected to the slurry delivery plane and is connected to the rotating throttle plate to close the slurry flow port through the rotating throttle plate and cut off the connection between the slurry storage chamber and the second conveying pipe.

8. The casting mold for track prefabricated slab according to claim 7, characterized in that: The third rotating shaft is provided with a third handle.

9. The casting mold for track prefabricated slab according to claim 1, characterized in that: A liquid level meter is arranged inside the slurry storage chamber to monitor the liquid level height in the slurry storage chamber.

10. The casting mold for track prefabricated slab according to claim 3, characterized in that: The first rotating shaft is provided with a first gear, the second rotating shaft is provided with a second gear, and the first gear and the second gear cooperate with each other.

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