Efficient concrete freezing and thawing circulating device

Abstract

The utility model provides an efficient concrete freezing and thawing circulating device, which relates to the technical field of concrete test, and comprises a freezing box, a normal temperature box and a thawing box, a mobile track equipment body assembly is arranged in the freezing box, the normal temperature box and the thawing box, two sides of the top of the normal temperature box are symmetrically provided with two mounting grooves in a downward extending manner, and the two mounting grooves are provided with mounting holes. And sealing assemblies are arranged in the two mounting grooves. According to the utility model, the concrete sample is placed in the placing disc and is conveyed and transferred into the freezing box 1 or the melting box along the mobile track equipment body, and the temperature of the environment where the concrete sample is located is adjusted through the transferring position of the concrete sample, so that a great deal of time is not needed to change the internal temperature of the box body; through cooperative use of the sealing assembly and the locking sub-assembly, the normal-temperature box and the freezing box or the normal-temperature box and the melting box only need to be communicated at the same time in the box body, the freezing box and the melting box are prevented from being opened at the same time, and internal air flows mutually.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, and in particular to a high-efficiency concrete freeze-thaw cycle device. Background Technology

[0002] Concrete freeze-thaw cycle is a process in which a concrete sample is placed inside a device and the temperature inside the device is continuously lowered and raised, causing the concrete sample to freeze and thaw repeatedly. The surface condition of the concrete sample is then observed to determine whether the concrete meets the requirements.

[0003] However, current concrete freeze-thaw cycle devices have the following problems during use: When concrete samples are placed in the same device, due to the large temperature range during the freeze-thaw cycle, the freezing and thawing process within the device requires repeated heating or cooling. The large temperature range leads to a significant increase in heating or cooling time, which reduces the efficiency of the test. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency concrete freeze-thaw circulation device, comprising: a freezing chamber, a room temperature chamber, and a thawing chamber, wherein the freezing chamber, room temperature chamber, and thawing chamber are sequentially connected from left to right, and a conveying pipe is connected to the top of one side of each of the freezing chamber and the thawing chamber, and a temperature detector is installed on one side of the inner cavity of each of the freezing chamber and the thawing chamber, wherein a moving track equipment body assembly is provided inside the freezing chamber, the room temperature chamber, and the thawing chamber, and two mounting slots are symmetrically extended downward on both sides of the top of the room temperature chamber, one side of the inner cavity of the two mounting slots is interconnected with the interior of the room temperature chamber, and a sealing assembly is provided inside each of the two mounting slots, and an opening and closing cover is installed at the top opening of the room temperature chamber by means of a hinge, and a locking sub-assembly is provided on the top of the opening and closing cover.

[0006] Furthermore, the mobile track device body assembly includes a mobile track device body installed at the bottom of the inner cavity of the freezing box, the ambient temperature box, and the melting box. The mobile track device body extends from the inside of the freezing box into the interior of the melting box along the ambient temperature box. The surface of the mobile track device body is provided with moving wheels for driving the placement tray to move, and the placement tray is installed on the top of the moving wheels.

[0007] Furthermore, the sealing assembly includes a sealing plate, which is movably embedded in the mounting groove. A fastening rod is movably embedded in the interior of the sealing plate. The lower end of the fastening rod movably penetrates the bottom surface of the sealing plate and is threadedly connected to the center of the bottom of the ambient temperature chamber. A rotating handle is fixedly connected to the upper end of the fastening rod, and the rotating handle is located above the sealing plate.

[0008] Furthermore, the sealing plate has an abutment cavity inside, and the surface of the fastening rod is fixedly fitted with an abutment block, the surface of which is movably connected to the inside of the abutment cavity.

[0009] Furthermore, an elastic sealing ring is fixedly installed around the side wall of the sealing plate, and the connection between the side wall of the sealing plate and the inner wall of the ambient temperature chamber is sealed by the elastic sealing ring. An insulation plate is installed on the other side of the sealing plate, and the insulation plate is movably embedded in the installation groove.

[0010] Furthermore, the locking sub-assembly includes a fixed sleeve, which is fixedly connected to the top of the opening and closing cover. A limiting plate is movably embedded inside the fixed sleeve. A sliding groove is provided at the center of the top of the fixed sleeve. A push-pull handle is fixedly installed on the top of the limiting plate. The surface of the push-pull handle is movably embedded inside the sliding groove.

[0011] Furthermore, the top of the sealing plate facing the inside of the room temperature chamber has an arc-shaped abutment surface, and the bottom of the sealing plate facing the inside of the room temperature chamber is fixedly connected with a limit strip along the length of the sealing plate. A fixing plate is fixedly installed at the position of the arc-shaped abutment surface on the top of one side of the inner cavity of the mounting groove.

[0012] Furthermore, fastening knob bolts are movably embedded at both ends of one side of the opening and closing cover, and one end of each of the two fastening knob bolts is threaded and connected to both ends of the top side of the ambient temperature box.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model improves the efficiency of concrete freeze-thaw cycles by placing a concrete sample in a placement tray and transporting it along a moving track to a freezing chamber that is always kept at a low temperature or a thawing chamber that is always kept at a high temperature. This is achieved by adjusting the temperature of the environment around the concrete sample by moving its position, eliminating the need to spend a lot of time changing the temperature inside the chamber.

[0015] 2. This utility model, through the combined use of the sealing component and the locking sub-component, allows the chamber to be connected to both the normal temperature chamber and the freezing chamber or the normal temperature chamber and the thawing chamber simultaneously. This prevents the two chambers from being opened at the same time, causing the internal air to flow between them, resulting in a rapid change in the internal temperature of the freezing chamber and the thawing chamber, causing energy loss and requiring a lot of time to readjust the temperature. Attached Figure Description

[0016] Figure 1 A front view of a high-efficiency concrete freeze-thaw circulation device provided by this utility model;

[0017] Figure 2 A cross-sectional side view of the ambient temperature chamber of a high-efficiency concrete freeze-thaw circulation device provided by this utility model;

[0018] Figure 3 This utility model provides a high-efficiency concrete freeze-thaw circulation device. Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 A top-view cross-sectional view of the ambient temperature chamber of a high-efficiency concrete freeze-thaw circulation device provided by this utility model;

[0020] Figure 5 A schematic diagram of the locking sub-component structure of a high-efficiency concrete freeze-thaw cycle device provided by this utility model.

[0021] Legend:

[0022] 1. Freezing chamber; 2. Room temperature chamber; 21. Mounting slot; 3. Melting chamber; 4. Mobile track equipment body assembly; 41. Mobile track equipment body; 42. Moving wheels; 43. Placement tray; 5. Sealing assembly; 51. Sealing plate; 511. Abutment cavity; 512. Arc abutment surface; 513. Limiting strip; 52. Fastening rod; 521. Rotating handle; 522. Abutment block; 53. Locking sub-assembly; 531. Fixing sleeve; 5311. Sliding groove; 532. Limiting plate; 5321. Push-pull handle; 6. Opening and closing cover; 7. Elastic sealing ring; 8. Fastening knob bolt; 9. Fixing plate; 10. Insulation plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5This utility model provides a technical solution: a high-efficiency concrete freeze-thaw circulation device, comprising: a freezing box 1, a room temperature box 2, and a thawing box 3, which are connected sequentially from left to right. A conveying pipe is connected to the top of one side of both the freezing box 1 and the thawing box 3. A temperature detector is installed on one side of the inner cavity of both the freezing box 1 and the thawing box 3. A moving track equipment body assembly 4 is installed inside the freezing box 1, the room temperature box 2, and the thawing box 3. Two mounting slots 21 are symmetrically extended downward from both sides of the top of the room temperature box 2. One side of the inner cavity of the two mounting slots 21 is interconnected with the interior of the room temperature box 2. A sealing assembly 5 is installed inside the two mounting slots 21. An opening and closing cover 6 is installed at the top opening of the room temperature box 2 by a hinge. A locking sub-assembly 53 is installed on the top of the opening and closing cover 6.

[0025] Specifically: The device is powered by an external power supply connected to a line; the side walls of both the freezing chamber 1 and the melting chamber 3 are transparent, facilitating observation of the internal conditions; by placing the concrete sample in the placement tray 43, it is transported along the moving track of the device body 41 to either the freezing chamber 1, which is always kept at a low temperature, or the melting chamber 2, which is always kept at a high temperature. The temperature of the environment around the concrete sample is adjusted by moving the position of the concrete sample, eliminating the need to spend a lot of time changing the internal temperature of the chambers. Through the cooperation of the sealing component 5 and the locking sub-component 53, it is convenient to connect only the normal temperature chamber 2 and the freezing chamber 1 or the normal temperature chamber 2 and the melting chamber 3 simultaneously, preventing the two chambers from being opened at the same time, causing the internal air to flow between them, resulting in a rapid change in the internal temperature of the freezing and melting chambers and causing energy loss; the temperature detector (not shown in the attached diagram) can detect the internal temperature of the freezing chamber 1 and the melting chamber 3.

[0026] In one embodiment, the mobile track device body assembly 4 includes a mobile track device body 41 disposed at the bottom of the inner cavity of the freezing chamber 1, the ambient temperature chamber 2, and the melting chamber 3. The mobile track device body 41 extends along the interior of the freezing chamber 1 and the ambient temperature chamber 2 into the interior of the melting chamber 3. The surface of the mobile track device body 41 is provided with a moving wheel 42 for driving the placement tray 43 to move. The placement tray 43 is disposed on the top of the moving wheel 42.

[0027] Specifically, such as Figure 2 , 4 As shown: The main body 41 of the mobile track equipment is existing technology. After operation, it can drive the moving wheels set on its surface to move, thereby completing the conveying and transfer of materials. The specific mechanism will not be described in detail here.

[0028] In one embodiment, the sealing assembly 5 includes a sealing plate 51, which is movably embedded in the mounting groove 21. A fastening rod 52 is movably embedded in the interior of the sealing plate 51. The lower end of the fastening rod 52 movably passes through the bottom surface of the sealing plate 51 and is threadedly connected to the center of the bottom of the cavity of the ambient temperature chamber 2. A rotating handle 521 is fixedly connected to the upper end of the fastening rod 52, and the rotating handle 521 is located above the sealing plate 51.

[0029] Specifically, such as Figures 2-5 As shown: The mounting groove 21 provides movable installation space for the sealing plate 51. The surface of the fastening rod 52 is threaded. One end of the fastening rod 52 passes through the surface of the sealing plate 51 and is threaded to the bottom of the inner cavity of the ambient temperature chamber 2, which serves to fix the sealing plate 51 installed in the mounting groove 21. The handle 521 facilitates the rotation of the fastening rod 52.

[0030] In one embodiment, the sealing plate 51 has an abutment cavity 511 inside, and the surface of the fastening rod 52 is fixedly fitted with an abutment block 522, the surface of the abutment block 522 being movably connected to the inside of the abutment cavity 511.

[0031] Specifically, such as Figure 3 As shown: The abutment cavity 511 provides space for the abutment block 522 to move up and down. When the fastening rod 52 moves upward and its bottom surface is separated from the bottom of the room temperature chamber 2, the fastening rod 52 will drive the abutment block 522 to move upward inside the abutment cavity 511 during the upward movement. The abutment block 522 can limit the fastening rod 52 and prevent the fastening rod 52 from being pulled out of the sealing plate 51.

[0032] In one embodiment, an elastic sealing ring 7 is fixedly installed around the side wall of the sealing plate 51, and the connection between the side wall of the sealing plate 51 and the inner wall of the ambient temperature box 2 is sealed by the elastic sealing ring 7. An insulation plate 10 is installed on the other side of the sealing plate 51, and the insulation plate 10 is movably embedded in the interior of the mounting groove 21.

[0033] Specifically, such as Figures 3-4 As shown: the elastic sealing ring 7 is used to enhance the sealing effect at the connection between the side wall of the sealing plate 51 and the inner wall of the room temperature box 2; the heat insulation plate 10 is used to block the hot and cold gases inside the freezing box 1 and the melting box 3. The bottom of the sealing plate 51 and the heat insulation plate 10 are provided with matching and fitting grooves (not shown in the figure) corresponding to the surface of the moving track equipment body 41. The fitting grooves facilitate the sealing plate 51 and the heat insulation plate 10 to fit and engage with the surface of the track equipment body 41 when they move down, which is convenient for sealing.

[0034] In one embodiment, the locking sub-assembly 53 includes a fixing sleeve 531, which is fixedly connected to the top of the opening and closing cover 6. A limiting plate 532 is movably embedded inside the fixing sleeve 531. A sliding groove 5311 is provided at the center of the top of the fixing sleeve 531. A push-pull handle 5321 is fixedly installed on the top of the limiting plate 532. The surface of the push-pull handle 5321 is movably embedded inside the sliding groove 5311.

[0035] Specifically, such as Figure 1 , 2 As shown in Figure 5: The sliding groove 5311 provides space for the push-pull handle 5321 to move left and right. When the push-pull handle 5321 is pushed left and right, it will drive the limiting plate 532 inside the fixed sleeve 531 to move, so that the limiting plate 532 extends from one end of the fixed sleeve 531 and presses against the top of the sealing plate 51 on the same side for pressing and fixing. When the limiting plate 532 extends from one side of the fixed sleeve 531, the other side will be retracted into the interior of the fixed sleeve 531.

[0036] In one embodiment, the top of the sealing plate 51 facing the inside of the room temperature chamber 2 has an arc-shaped abutment surface 512, and the bottom of the sealing plate 51 facing the inside of the room temperature chamber 2 is fixedly connected with a limit strip 513 along the length of the sealing plate 51. A fixing plate 9 is fixedly installed at the position of the top of the inner cavity of the mounting groove 21 corresponding to the arc-shaped abutment surface 512.

[0037] Specifically, such as Figures 2-3 As shown: the arc-shaped contact surface 512 provides space for the installation of the fixing plate 9. The sealing plate 51, placed inside the mounting groove 21, has one side attached to one side of the mounting groove 21 through the connected heat insulation plate 10, and the other side attached to the other side of the inner cavity of the mounting groove 21 through the limiting strip 513. When the sealing plate 51 is pulled out, the fixing plate 9 limits the limiting strip 513 to prevent the sealing plate 51 from being pulled out of the mounting groove 21.

[0038] In one embodiment, fastening knob bolts 8 are movably embedded at both ends of one side of the opening and closing cover 6, and one end of the two fastening knob bolts 8 is threadedly embedded and connected to both ends of the top side of the ambient temperature box 2.

[0039] Specifically, such as Figure 1 , 5 As shown: The surface of the opening and closing cover 6 is provided with a handle, which can be used to lift the opening and closing cover 6 to open and close. The fastening knob bolt 8 can be used to fix the opening and closing cover 6 when it is closed.

[0040] Working principle:

[0041] The external connection pipe is pre-connected to the conveying pipe on one side of the freezing box 1 and the melting box 3, and the other end of the external connection pipe is connected to the external refrigeration and heating equipment. The external refrigeration and heating equipment are used to transport cold air and hot air into the freezing box 1 and the melting box 3.

[0042] When using this concrete freeze-thaw cycle device, the operator can place the concrete sample in the placement tray 43 by opening the opening and closing cover 6. When a concrete sample freezing test is required, the operator pulls up the sealing plate 51 on the side connecting the freezing chamber 1 and the ambient temperature chamber 2, thereby connecting the ambient temperature chamber 2 and the freezing chamber 1. The operator then operates the moving track device 41 through the external control terminal to drive the moving wheel 42 to move the anti-freezing tray 43 along the moving track device body 41 into the freezing chamber 1. Then, the operator pushes down the sealing plate 51 to isolate the freezing chamber 1 from the ambient temperature chamber 2. The operator then conducts the test and uses a temperature detector to monitor the temperature inside the freezing chamber 1 in real time and feeds it back to the external control terminal. The operator then controls the external refrigeration equipment to deliver cold air into the freezing chamber 1 to perform a freezing test on the concrete sample that has moved into the freezing chamber 1.

[0043] When a melting test is required, open one side of the sealing plate 51 to move the placement tray 43 into the ambient temperature chamber 2, then close that side of the sealing plate 51. Next, open the other side of the sealing plate 51 and transfer the placement tray 43 into the melting chamber 3. Close the sealing plate 51 again to conduct the test. A temperature detector monitors the temperature inside the melting chamber 3 in real time and sends the feedback to the external control terminal. This coordinates with the external heating equipment to supply hot air into the freezing chamber 1, performing a hot-melt test on the concrete sample moved into the melting chamber 3. After the experiment is completed, open the opening / closing cover 6 to remove the concrete sample for observation.

[0044] Through the above operations, the temperature inside the freezing chamber 1 and the thawing chamber 3 will not be exposed to outside air for a long time. They only need to be briefly connected to the ambient temperature chamber 2 during the transfer process, and are isolated and sealed by the set sealing component 5. This allows the chamber to be connected to the ambient temperature chamber and the freezing chamber or the ambient temperature chamber and the thawing chamber at the same time, preventing the freezing chamber and the thawing chamber from being opened at the same time and causing the internal air to flow between them, thus reducing energy loss. At the same time, the temperature inside the freezing chamber 1 or the thawing chamber 3 can be adjusted in advance before transferring the concrete sample, thereby solving the problem of the equipment needing to spend a lot of time changing the temperature inside the chamber during the concrete freeze-thaw cycle as much as possible, and improving the efficiency of the freeze-thaw cycle experiment.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-efficiency concrete freeze-thaw circulation device, characterized in that, include: A freezing chamber (1), a room temperature chamber (2), and a melting chamber (3) are connected sequentially from left to right. A conveying pipe is connected to the top of one side of the freezing chamber (1) and the melting chamber (3). A temperature detector is installed on one side of the inner cavity of the freezing chamber (1) and the melting chamber (3). A moving track equipment body assembly (4) is installed inside the freezing chamber (1), the room temperature chamber (2), and the melting chamber (3). Two mounting slots (21) are symmetrically extended downward on both sides of the top of the room temperature chamber (2). One side of the inner cavity of the two mounting slots (21) is connected to the inside of the room temperature chamber (2). A sealing assembly (5) is installed inside the two mounting slots (21). An opening and closing cover (6) is installed at the top opening of the room temperature chamber (2) by a hinge. A locking sub-assembly (53) is installed on the top of the opening and closing cover (6).

2. The high-efficiency concrete freeze-thaw circulation device according to claim 1, characterized in that: The mobile track equipment body assembly (4) includes a mobile track equipment body (41) installed at the bottom of the inner cavity of the freezing box (1), the ambient temperature box (2) and the melting box (3). The mobile track equipment body (41) extends from the freezing box (1) into the ambient temperature box (2) and into the melting box (3). The surface of the mobile track equipment body (41) is provided with a moving wheel (42) for driving the placement tray (43) to move. The placement tray (43) is installed on the top of the moving wheel (42).

3. The high-efficiency concrete freeze-thaw circulation device according to claim 1, characterized in that: The sealing assembly (5) includes a sealing plate (51), which is movably embedded in the mounting groove (21). A fastening rod (52) is movably embedded in the interior of the sealing plate (51). The lower end of the fastening rod (52) movably penetrates the bottom surface of the sealing plate (51) and is threadedly connected to the center of the bottom of the room temperature chamber (2). A rotating handle (521) is fixedly connected to the upper end of the fastening rod (52), and the rotating handle (521) is located above the sealing plate (51).

4. The high-efficiency concrete freeze-thaw circulation device according to claim 3, characterized in that: The sealing plate (51) has an abutment cavity (511) inside, and the fastening rod (52) has an abutment block (522) fixedly sleeved on its surface. The surface of the abutment block (522) is movably connected to the inside of the abutment cavity (511).

5. The high-efficiency concrete freeze-thaw circulation device according to claim 3, characterized in that: An elastic sealing ring (7) is fixedly installed around the side wall of the sealing plate (51). The side wall of the sealing plate (51) is sealed to the inner wall of the room temperature box (2) by the elastic sealing ring (7). An insulation plate (10) is installed on the other side of the sealing plate (51). The insulation plate (10) is movably embedded in the inside of the mounting groove (21).

6. The high-efficiency concrete freeze-thaw circulation device according to claim 1, characterized in that: The locking sub-assembly (53) includes a fixed sleeve (531), which is fixedly connected to the top of the opening and closing cover (6). A limiting plate (532) is movably inserted and fitted inside the fixed sleeve (531). A sliding groove (5311) is provided at the center of the top of the fixed sleeve (531). A push-pull handle (5321) is fixedly installed on the top of the limiting plate (532), and the surface of the push-pull handle (5321) is movably embedded inside the sliding groove (5311).

7. The high-efficiency concrete freeze-thaw circulation device according to claim 3, characterized in that: The sealing plate (51) has an arc-shaped contact surface (512) on the top of the side facing the inside of the room temperature box (2). A limit strip (513) is fixedly connected to the bottom of the side of the sealing plate (51) facing the inside of the room temperature box (2) along the length of the sealing plate (51). A fixing plate (9) is fixedly installed at the position of the arc-shaped contact surface (512) on the top of the side of the inner cavity of the mounting groove (21).

8. The high-efficiency concrete freeze-thaw circulation device according to claim 1, characterized in that: Both ends of the opening and closing cover (6) are movably embedded with fastening knob bolts (8), and one end of the two fastening knob bolts (8) is threaded and connected to both ends of the top side of the room temperature box (2).

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