Vacuum equipment

Abstract

This disclosure provides a vacuuming device, comprising: a housing having a vacuum chamber for containing a concrete component and an inlet and an outlet for the concrete component to enter and exit the vacuum chamber; the housing being connected to a sealing door for closing the inlet and outlet; and a negative pressure device connected to the vacuum chamber and configured to extract gas from the vacuum chamber when the sealing door is closed. The concrete component is contained within the vacuum chamber, and the sealing door closes the inlet and outlet, thus sealing the vacuum chamber. Subsequently, the negative pressure device extracts gas from the vacuum chamber, creating a negative pressure state. Air bubbles in the concrete component are expelled under the pressure difference, reducing the number of air bubbles in the concrete component, increasing the density of the concrete component, and thereby improving the structural strength of the concrete component.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of concrete processing technology, and more specifically, to vacuum equipment. Background Technology

[0002] Precast concrete components are highly standardized and can be installed quickly, which helps improve construction efficiency and reduce construction costs. The structural strength of precast concrete components directly affects the safety and service life of buildings.

[0003] Therefore, how to improve the structural strength of precast concrete components is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] To address the aforementioned technical problems, embodiments of this disclosure provide a vacuuming device capable of removing air bubbles from concrete components, thereby improving the structural strength of the concrete components.

[0005] According to one aspect, at least one embodiment of this disclosure provides a vacuum pumping device, comprising:

[0006] The box has a vacuum chamber for containing concrete components and an inlet and outlet for the concrete components to enter and exit the vacuum chamber. The box is connected to a sealed door for closing the inlet and outlet.

[0007] A negative pressure device is connected to a vacuum chamber and is configured to extract gas from the vacuum chamber when the sealed chamber door is closed.

[0008] In some embodiments, it also includes:

[0009] The door drive mechanism is connected to the housing and is used to drive the opening and closing of the sealed door.

[0010] The sealing auxiliary mechanism is connected to the housing and is used to press the sealing door tightly against the housing after the sealing door is closed.

[0011] In some embodiments, the sealing auxiliary mechanism includes a clamping member and a clamping drive member;

[0012] The clamping element is configured to conform to the outer surface of the sealed compartment door away from the door drive mechanism when in the clamping position, and to avoid the range of motion of the sealed compartment door when in the released position.

[0013] The clamping drive is fixedly connected to the housing and connected to the clamping component. It is used to drive the clamping component to move between the clamping position and the releasing position, and to apply clamping force to the closed sealed door through the clamping component.

[0014] In some embodiments, the door drive mechanism includes a mounting base, a drive arm, and a drive component;

[0015] The mounting base is fixedly connected to the enclosure;

[0016] The drive arm is hinged to the mounting base and fixedly connected to the sealing door. The drive arm is configured such that when it is in the open position, the sealing door is away from the corresponding inlet or outlet, and when it is in the closed position, the sealing door is close to the corresponding inlet or outlet.

[0017] The drive unit is fixedly connected to the housing and connected to the drive arm, and is used to drive the drive arm to move between the open position and the closed position.

[0018] In some embodiments, a compaction mechanism is also included, which is disposed on the top of the housing and is used to compact the concrete component during the process.

[0019] In some embodiments, the compaction mechanism includes a compaction plate and a lifting member. The compaction plate is disposed in a vacuum chamber, and the lifting member is fixed to the top of the housing and connected to the compaction plate to drive the compaction plate to move up and down.

[0020] In some embodiments, the housing includes a top plate, a bottom plate, and a side plate, with a reinforcing plate provided on the surface of the side plate facing away from the vacuum chamber.

[0021] In some embodiments, the housing further includes reinforcing ribs disposed on the surfaces of the top plate and / or bottom plate opposite to the vacuum chamber.

[0022] In some embodiments, a plurality of conveying rollers are arranged parallel to each other at the bottom of the housing, and the plurality of conveying rollers are distributed in the direction from the inlet to the outlet, and the conveying rollers are used to support the concrete component.

[0023] In some embodiments, there are multiple negative pressure devices, distributed on the surface of the base plate away from the vacuum chamber.

[0024] The beneficial effects of the embodiments disclosed herein are as follows:

[0025] In this disclosure, the concrete component is placed inside a vacuum chamber, and a sealed door closes the inlet and outlet to maintain a sealed state within the vacuum chamber. Subsequently, a negative pressure device extracts the gas from the vacuum chamber, creating a negative pressure environment. Air bubbles in the concrete component are expelled under the pressure difference, reducing the number of air bubbles and increasing the density of the concrete component, thereby improving its structural strength. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0027] Figure 1 A schematic diagram of the structure of the vacuum equipment with the sealed chamber door open according to a specific embodiment of this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the vacuum equipment's sealed chamber door when closed;

[0029] Figure 3 for Figure 1 A schematic diagram of the vacuum pumping equipment from another perspective;

[0030] Figure 4 for Figure 1 Schematic diagram of the middle side plate;

[0031] Figure 5 for Figure 1 Front view of the vacuum pumping equipment in the middle;

[0032] Figure 6 Side view of the vacuum pumping equipment in the middle;

[0033] Figure 7 Figure 1 A schematic diagram of the vacuum equipment shown in the image, where no concrete components are placed inside the sealed chamber door.

[0034] Figure 8 Figure 1 A schematic diagram of the structure in which concrete components are placed inside the sealed chamber door of the vacuum equipment.

[0035] Figure 9 Figure 1 A schematic diagram of the structure connecting the compaction mechanism to the top plate;

[0036] Figure 10 Enlarged view of A in the middle;

[0037] Figure 11 A schematic diagram showing the connection between the drive mechanism of the central storage door and the sealed storage door.

[0038] Figures 1 to 11 The attached figures are labeled as follows:

[0039] 1. Box body; 11. Vacuum chamber; 12. Top plate; 13. Bottom plate; 14. Side plate; 141. Channel steel; 1411. Wing plate; 1412. Web plate; 15. Reinforcing rib; 16. Conveying roller; 161. Transmission gear; 2. Negative pressure device; 3. Sealed door; 4. Door drive mechanism; 41. Drive cylinder; 42. Drive arm; 421. Connecting arm; 4211. First connecting section; 4212. Second connecting section; 422. Connecting beam; 4221. Connecting seat; 43. Mounting seat; 5. Compaction mechanism; 51. Lifting cylinder; 52. Compaction plate; 6. Concrete components; 61. Insulation layer. Detailed Implementation

[0040] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0041] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0042] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0043] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0045] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] During the pouring of concrete components, many air bubbles remain inside. After compaction, larger air bubbles are expelled, improving the compactness of the concrete. However, smaller air bubbles, due to their lower buoyancy and greater resistance to movement, are difficult to expel. These smaller air bubbles also affect the structural strength of the concrete component. Concrete components can be made of UHPC (Ultra-High Performance Concrete), an advanced building material with ultra-high strength, high durability, and excellent toughness. It boasts high strength, long service life, and high toughness, and is widely used in bridge engineering, building curtain walls, defense engineering, and marine engineering. Of course, other types of concrete can also be used to make concrete components; this is not a limitation.

[0047] like Figures 1 to 3 As shown, the vacuum equipment provided in this application includes a housing 1, a sealed door 3, and a negative pressure device 2. The housing 1 contains a vacuum chamber 11 with an inlet and an outlet. Concrete components are fed into the vacuum chamber 11 through the inlet, and the processed concrete components are discharged through the outlet. The sealed door 3 is positioned corresponding to the inlet and outlet. After the concrete component enters the vacuum chamber 11, the inlet and outlet are sealed, keeping the vacuum chamber 11 in a sealed state. The negative pressure device 2 is connected to the vacuum chamber 11. After the vacuum chamber 11 is sealed, the negative pressure device 2 extracts the gas from the vacuum chamber 11, placing the vacuum chamber 11 under negative pressure. At this time, the internal pressure of the concrete is higher than the pressure in the vacuum chamber 11. Air bubbles in the concrete component will be discharged into the vacuum chamber 11 under the pressure difference, increasing the density of the concrete component and thus improving its structural strength.

[0048] See Figures 1 to 3 As shown, in some embodiments, the box 1 may be rectangular. The box 1 includes a top plate 12, a bottom plate 13, and side plates 14. The inlet and outlet are located on two opposite faces of the box 1. The concrete component can enter the vacuum chamber 11 in the direction from the inlet to the outlet. After the process is completed, the concrete component continues to move in this direction and finally leaves the box 1 from the outlet. The box 1 includes two side plates 14, which serve as two opposite faces of the rectangular prism. The top plate 12 and the bottom plate 13 serve as the top and bottom faces of the rectangular prism, respectively. The other two faces of the rectangular prism are open, serving as the inlet and outlet, respectively. In other embodiments, the box 1 may adopt other shapes, such as cylindrical, frustum-shaped, etc., which are not limited here. The inlet and outlet of the box 1 may also be distributed at a certain angle, or use the same opening as the inlet and outlet, which are not limited here. In this embodiment, the inlet and outlet are set opposite to each other, and the concrete parts move in the same direction before and after the process, which simplifies the movement of the concrete parts. At the same time as the processed concrete parts are sent out, the concrete parts to be processed can be sent into the box 1, which improves the processing efficiency of the vacuum equipment.

[0049] See Figure 1 As shown, in some embodiments, the side plate 14 of the housing 1 has a reinforcing plate on the surface facing away from the vacuum chamber 11. The reinforcing plate can improve the structural strength of the side plate 14 and prevent the side plate 14 from deforming under negative pressure. Optionally, Figure 4 In the illustrated embodiment, the side plate 14 is formed by connecting two parallel channel steels 141. Specifically, the grooves of the two channel steels 141 have the same direction, and the flanges 1411 of the two channel steels 141 can be fixed together by bolts. The two connected flanges 1411 form a reinforcing plate, strengthening the connection between the channel steels 141 and improving the sealing performance of the housing 1. Optionally, a sealing gasket can be provided between the two connected flanges 1411. The bolt preload will press the flanges 1411 against the sealing gasket while connecting the flanges 1411, thereby improving the sealing effect of the housing 1. In other embodiments, the side plate 14 can be formed by connecting multiple steel sections or by processing steel plates, which is not limited here. Further, see Figure 1 As shown, in some embodiments, the top plate 12 and side plate 14 of the housing 1, as well as the bottom plate 13 and side plate 14, can be fixedly connected by bolts. Specifically, the wing plates 1411 on the upper and lower sides of the channel steel 141 can be respectively attached to the top plate 12 and the bottom plate 13, and bolts connect the top plate 12 and the bottom plate 13 to the corresponding wing plates 1411.

[0050] The side plate 14 is formed by welding channel steel 141. The processing method is simple, the raw materials are easy to obtain, and the channel steel 141 has high structural strength, which can ensure that the side plate 14 has sufficient resistance to deformation and facilitates the connection of the side plate 14 to the top plate 12 and the bottom plate 13.

[0051] In other embodiments, the side plate 14 may also be formed by attaching and welding the outer surfaces of two channel steels 141 and flanges 1411 together. The two flanges 1411 welded together form the reinforcing plate. Connecting the channel steels 141 by welding not only improves the connection strength but also ensures the sealing between the two channel steels 141. In actual use, the user can choose the forming process of the side plate 14 as needed, and there is no limitation here.

[0052] In some embodiments, sealing gaskets are provided between the top plate 12 and the side plate 14 of the housing 1, and between the bottom plate 13 and the side plate 14. For example... Figure 2 As shown, when the wing plate 1411 of the channel steel 141 is bolted to the top plate 12 or the side plate 14, the bolt preload can press the wing plate 1411 to the top plate 12 or the side plate 14, thereby squeezing the sealing gasket to produce elastic deformation and improving the sealing performance of the box 1.

[0053] In some embodiments, to improve the structural strength of the housing 1, reinforcing ribs 15 are provided on the surfaces of the top plate 12 and / or bottom plate 13 of the housing 1 that face away from the vacuum chamber 11. For example... Figure 1 As shown, multiple reinforcing ribs 15 are distributed along the direction from inlet to outlet on the top plate 12 and the bottom plate 13. Specifically, six reinforcing ribs 15 are evenly spaced on both the top plate 12 and the bottom plate 13. The two ends of the reinforcing ribs 15 can be flush with the two sides of the top plate 12 or the bottom plate 13 extending along the direction from inlet to outlet, respectively. In this embodiment, the six reinforcing ribs 15 can evenly distribute the load on the box 1. Of course, the number and distribution of the reinforcing ribs 15 are not limited to this. For example, the number of reinforcing ribs 15 can be four, eight, etc., and the reinforcing ribs 15 can be distributed in a direction perpendicular to the direction from inlet to outlet.

[0054] Optional, Figure 1 and Figure 5 In the illustrated embodiment, the reinforcing rib 15 is trapezoidal and perpendicular to the top plate 12 and the bottom plate 13. The top plate 12 and the bottom plate 13 of the housing 1 bear a larger load at positions away from the side plate 14. The reinforcing rib 15 is higher at these positions, thus having a higher load-bearing capacity. By specifically improving the load-bearing capacity of the top plate 12 and the bottom plate 13, the housing 1 can be guaranteed to have sufficient strength while reducing the amount of material used and lowering manufacturing costs.

[0055] In some embodiments, there may be multiple negative pressure devices 2, and the negative pressure devices 2 may be installed on the side of the base plate 13 opposite to the vacuum chamber 11. Specifically, in Figure 6 In the illustrated embodiment, there are four negative pressure devices 2. The five gaps formed by the six reinforcing ribs 15 on the base plate 13 are each fitted with a negative pressure device 2, except for the gap located in the center of the base plate 13. In this embodiment, the negative pressure devices 2 are evenly distributed on the top plate 12, and all negative pressure devices 2 operate simultaneously, generating a large negative pressure and ensuring uniform pressure distribution within the housing 1. Of course, the number and distribution of the negative pressure devices 2 are not limited to this.

[0056] In some embodiments, to facilitate the movement of concrete components within the vacuum chamber 11, a conveying roller 16 is provided at the bottom of the vacuum chamber 11. For example... Figure 6 As shown, nine conveying rollers 16 are evenly spaced at the bottom of the box 1 along the direction from the inlet to the outlet. Concrete components can be placed on the conveying rollers 16, and the rotation of the conveying rollers 16 can reduce the resistance to the movement of the concrete components. The number and distribution of the conveying rollers 16 can be set according to user needs and are not limited here.

[0057] Figure 6In the illustrated embodiment, nine mounting holes are distributed along the length of the web 1412 of the channel steel 141 located below the side plate 14. The ends of the conveyor roller 16 can be mounted in the mounting holes via bearings. The mounting holes on the two side plates 14 are positioned correspondingly, thereby mounting the two ends of the conveyor roller 16. In addition, the conveyor roller 16 and the mounting holes can be sealed using methods such as labyrinth seals or packing seals to prevent gas from entering the vacuum chamber 11 through the gap between the conveyor roller 16 and the mounting holes during vacuuming.

[0058] Furthermore, in one specific embodiment of this application, the conveying roller 16 near the inlet of the housing 1 is a power roller. Specifically, the end of the power roller extends to the outside of the housing 1, and a transmission component can be installed on the outer periphery of this end. A power mechanism, such as a motor, drives the power roller to rotate through the transmission component. After the concrete component is fed into the vacuum chamber 11, the rotation of the power roller applies a thrust towards the vacuum chamber 11 to the concrete component, thereby pushing the concrete component into the vacuum chamber 11. Figure 6 In the specific embodiment shown, the transmission component is a transmission gear 161. In other specific embodiments, the transmission component can be a transmission pulley, transmission sprocket, etc., and is not limited here. Optionally, the conveying roller 16 near the outlet of the housing 1 can also be a power roller, used to push the concrete part out of the vacuum chamber 11 after the process is completed. Of course, the user can also set multiple output rollers as power rollers as needed, and is not limited here.

[0059] A thermal insulation layer 61 can be installed on the concrete component. During the process, the vacuum equipment will press the thermal insulation layer 61 tightly against the concrete to ensure that the thermal insulation layer 61 is firmly fixed to the concrete. In some embodiments, the vacuum equipment includes a compaction mechanism 5, which is used to compact the thermal insulation layer 61 of the concrete component in the vacuum chamber 11, so that the thermal insulation layer 61 is always in close contact with the concrete during the process. After the concrete is fixed, the thermal insulation layer 61 is firmly fixed to the concrete.

[0060] Optionally, the compaction mechanism 5 is installed on the top plate 12 of the housing 1. The compaction mechanism 5 includes a lifting component and a compaction plate 52. The lifting component is connected to the compaction plate 52 and is used to drive the compaction plate 52 to rise and fall. (Reference) Figure 7 and Figure 8 When the concrete component 6 moves, the lifting device raises the compaction plate 52 to the passing position, allowing the concrete component 6 to pass under the compaction plate 52 without interfering with it. After the concrete component 6 is in place, the lifting device lowers the compaction plate 52 to the compaction position, applying pressure to the insulation layer 61 of the concrete component 6 through the compaction plate 52, thus compacting the insulation layer 61 to the concrete component 6. Figures 6 to 9In a specific embodiment, the lifting component can be a lifting cylinder 51, which can be arranged along the direction perpendicular to the top plate 12. The compaction plate 52 is perpendicular to the lifting cylinder 51 and is fixedly connected to the piston of the lifting cylinder 51. The top plate 12 has a through hole extending along the thickness direction, and the piston of the lifting cylinder 51 passes through the through hole. The cylinder barrel of the lifting cylinder 51 is sealed to the through hole.

[0061] In some embodiments, there may be multiple compaction mechanisms 5. Specifically, in Figure 1 In the illustrated embodiment, there are 10 compaction mechanisms 5, with two compaction mechanisms 5 positioned between two adjacent reinforcing ribs 15. In this embodiment, the compaction mechanisms 5 are evenly distributed on the top plate 12, and all compaction mechanisms 5 operate simultaneously, generating a large negative pressure and ensuring uniform pressure distribution within the housing 1. Of course, the number and distribution of the compaction mechanisms 5 are not limited to this.

[0062] In some embodiments, the vacuum equipment further includes a door drive mechanism 4, which is mounted on the housing 1, and the sealing door 3 is connected to the door drive mechanism 4. Figure 1 As shown, there can be two vacuum chamber door drive mechanisms 4, corresponding to the inlet and outlet of the vacuum chamber 11 respectively. When a concrete component needs to be fed into the vacuum chamber 11, the inlet door drive mechanism 4 opens the corresponding sealed door 3; during the process, both sealed doors 3 are closed, keeping the vacuum chamber 11 sealed; when a concrete component needs to be discharged from the vacuum chamber 11, the outlet door drive mechanism 4 opens the corresponding sealed door 3. The vacuum chamber door drive mechanism 4 can be controlled by an operator via a button or by a PLC controller or other control device. The vacuum chamber door drive mechanism 4 can automatically open and close the sealed doors 3, improving the automation level of the vacuum equipment, increasing production efficiency, and reducing labor costs.

[0063] In some embodiments, the door drive mechanism 4 includes a mounting base 43, a drive arm 42, and a drive component. Figure 3 In the specific embodiment shown, the drive arm 42 includes two connecting arms 421 and a connecting beam 422. The connecting arms 421 may be L-shaped and include a first connecting segment 4211 and a second connecting segment 4212 that are perpendicular to each other. The side of the first connecting segment 4211 closest to the second connecting segment 4212 is fixedly connected to the sealed compartment door 3. The center of gravity of the sealed compartment door 3 may be located between the two first connecting segments 4211. Optionally, the two first connecting segments 4211 may be symmetrically distributed on both sides of the center of gravity of the sealed compartment door 3.

[0064] Mounting base 43 can be fixedly connected to the top plate 12 of housing 1 and is located near the inlet or outlet of housing 1. The second connecting section 4212 is hinged to mounting base 43. Mounting base 43 may include two connecting ears, each hinged to one end of the two second connecting sections 4212 away from the first connecting section 4211. Both ends of connecting beam 422 are fixedly connected to the second connecting sections 4212 of the two connecting arms 421. Therefore, the two connecting arms 421 can rotate synchronously around mounting base 43. The connection position between connecting beam 422 and the second connecting section 4212 is spaced from the connection position between the second connecting section 4212 and mounting base 43. The driving component can be a driving cylinder 41, one end of which is hinged to the connecting seat 4221 in the middle of connecting beam 422, and the other end is hinged to housing 1. Taking the door drive mechanism 4 at the inlet as an example, the piston of driving cylinder 41 can move in a direction close to or away from the inlet, and the extension and retraction of the piston of driving cylinder 41 can drive driving arm 42 to move between the open and closed positions. Specifically, the piston of the actuator lever retracts, pulling the actuator arm 42 to the open position. At this time, the second connecting section 4212 is approximately perpendicular to the top plate 12 of the housing 1, and the first connecting section 4211 is approximately parallel to the top plate 12 of the housing 1. The concrete component can then enter and exit the vacuum chamber 11 without interfering with the sealing door 3. The piston of the actuator lever extends, pushing the actuator arm 42 to rotate around the mounting base 43 to the closed position. At this time, the second connecting section 4212 is approximately parallel to the top plate 12 of the housing 1, and the first connecting section 4211 is approximately perpendicular to the top plate 12 of the housing 1. The sealing door 3 is also positioned approximately perpendicular to the top plate 12 of the housing 1, fitting against the inlet or outlet of the housing 1, thus sealing the housing 1. The length of the second connecting section 4212 can be set according to the user's needs, ensuring the sealing effect of the housing 1. In other embodiments, the door drive mechanism 4 can drive the sealing door 3 to open and close in other ways. For example, the door drive mechanism 4 can drive the sealing door 3 to rise and fall along the direction of the vertical top plate 12. When the sealing door 3 falls to the position of fitting the bottom plate 13, the inlet or outlet of the box 1 is closed.

[0065] Optionally, the vacuum equipment also includes a sealing auxiliary mechanism (not shown in the figure), which is disposed on the bottom plate 13 of the housing 1. When the sealing door 3 is closed, the sealing auxiliary mechanism can press the lower side of the sealing door 3 against the inlet or outlet of the housing 1 to prevent leakage from the lower side of the sealing door 3 and improve the sealing performance of the housing 1.

[0066] The number of sealing auxiliary mechanisms can be four, with two at the inlet and two at the outlet. The two sealing auxiliary mechanisms can be symmetrically distributed on both sides of the centerline extending from the inlet to the outlet on the base plate 13. These two sealing auxiliary mechanisms provide greater clamping force and make the distribution of clamping force more uniform. Optionally, the orthogonal projection of the door drive mechanism 4 on the base plate 13 can be located between the two sealing auxiliary mechanisms, that is, the two sealing auxiliary mechanisms are closer to the side plate 14. The sealing auxiliary mechanisms cooperate with the door drive mechanism 4 to press the sealing door 3 against the inlet or outlet. The distribution of the sealing auxiliary mechanisms and the door drive mechanism 4 allows for a more uniform distribution of clamping force in both the horizontal and vertical directions, thereby improving the sealing performance of the housing 1. Sealing elements can be installed at the sealing door 3 and / or the inlet and outlet of the housing 1. When the sealing door 3 is in contact with the inlet and outlet of the housing 1, it presses against the sealing elements, further improving the sealing effect. Of course, the sealing auxiliary mechanisms can also be used in other quantities and distributions. For example, four sealing auxiliary mechanisms can be set at the inlet and outlet, with two sealing auxiliary mechanisms set on the bottom plate 13 and the other two sealing auxiliary mechanisms set on the two side plates 14 respectively.

[0067] In some embodiments, the sealing auxiliary mechanism includes a clamping member and a clamping drive member. The clamping drive member may be a clamping cylinder, and the clamping member may be a clamping plate. The clamping cylinder is fixed to the surface of the base plate 13 opposite to the vacuum chamber 11. The piston of the clamping cylinder is fixedly connected to the clamping plate and extends and retracts parallel to the base plate 13 in a direction perpendicular to the inlet or outlet. The clamping plate is perpendicular to the piston of the compression chamber, and the upper side of the clamping plate is higher than the upper surface of the base plate 13. When the inlet or outlet is closed, the clamping cylinder drives the clamping plate to the clamping position. At this time, the clamping plate is in contact with the sealing chamber door 3, and the clamping cylinder applies clamping force to the sealing chamber door 3 through the clamping plate to improve the sealing performance of the chamber 1. After the process is completed, the cylinder of the clamping cylinder extends and drives the clamping plate to the release position. At this time, the clamping plate is away from the sealing chamber door 3 to avoid interference when the sealing chamber door 3 is opened. In other embodiments, the clamping drive and clamping member may be other components. For example, the clamping drive may be a hydraulic cylinder, electric cylinder or motor, and the clamping member may be a clamping block, clamping cam, etc., which are not limited here.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A vacuum pumping device, characterized in that, include: The box body has a vacuum chamber for accommodating concrete components and an inlet and an outlet for the concrete components to enter and exit the vacuum chamber. The box body is connected to a sealing door for closing the inlet and the outlet. A negative pressure device is connected to the vacuum chamber and configured to extract gas from the vacuum chamber when the sealed chamber door is closed.

2. The vacuum pumping device according to claim 1, characterized in that, Also includes: A door drive mechanism, which is connected to the housing, is used to drive the sealing door to open and close; A sealing auxiliary mechanism is connected to the housing and is used to press the sealing door tightly against the housing after the sealing door is closed.

3. The vacuum pumping device according to claim 2, characterized in that, The sealing auxiliary mechanism includes a clamping component and a clamping drive component; The clamping member is configured to conform to the outer surface of the sealed compartment door away from the door drive mechanism when it is in the clamping position, and to avoid the range of motion of the sealed compartment door when it is in the released position. The clamping drive is fixedly connected to the housing and connected to the clamping member, and is used to drive the clamping member to move between the clamping position and the releasing position, and to apply clamping force to the closed sealing door through the clamping member.

4. The vacuum pumping device according to claim 2, characterized in that, The door drive mechanism includes a mounting base, a drive arm, and a drive component; The mounting base is fixedly connected to the housing; The drive arm is hinged to the mounting base and fixedly connected to the sealing door. The drive arm is configured such that when it is in the open position, the sealing door is away from the corresponding inlet or outlet, and when it is in the closed position, the sealing door is close to the corresponding inlet or outlet. The drive unit is connected to the housing and the drive arm, and is used to drive the drive arm to move between the open position and the closed position.

5. The vacuum pumping device according to any one of claims 1 to 4, characterized in that, It also includes a compaction mechanism, which is located on the top of the box and is used to compact the concrete component during the process.

6. The vacuum pumping device according to claim 5, characterized in that, The compaction mechanism includes a compaction plate and a lifting component. The compaction plate is disposed inside the vacuum chamber, and the lifting component is fixed to the top of the box and connected to the compaction plate to drive the compaction plate to move up and down.

7. The vacuum pumping device according to claim 1, characterized in that, The enclosure includes a top plate, a bottom plate, and side plates, and the side plates have reinforcing plates on the surface facing away from the vacuum chamber.

8. The vacuum pumping device according to claim 7, characterized in that, The housing also includes reinforcing ribs, which are disposed on the surfaces of the top plate and / or the bottom plate that are away from the vacuum cavity.

9. The vacuum pumping device according to claim 1, characterized in that, Multiple conveying rollers are arranged parallel to each other at the bottom of the box body. The multiple conveying rollers are distributed in the direction from the inlet to the outlet, and the conveying rollers are used to support the concrete component.

10. The vacuum pumping device according to claim 7, characterized in that, The negative pressure device comprises multiple units and is distributed on the surface of the base plate opposite to the vacuum cavity.

Images