CN210923536U

CN210923536U - Freezing and thawing circulator

Info

Publication number: CN210923536U
Application number: CN201921825062.0U
Authority: CN
Inventors: 孔凡敏; 李强; 陈喜旺; 王军; 王丽丽; 姜长洋; 郝兵; 张弯; 李威; 王杰之; 范业侃; 李燕伟
Original assignee: BCEG Advanced Construction Materials Co Ltd
Current assignee: BCEG Advanced Construction Materials Co Ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-07-03
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a freeze thawing circulator, which relates to the technical field of concrete frost resistance test equipment, and has the technical scheme that the freeze thawing circulator comprises a low-temperature freezing box, a water inlet pipe, a water inlet pump, a water outlet pipe, a water outlet pump, a circulating water tank and a storage frame, wherein a fixing device is arranged on the side wall of the low-temperature freezing box, and comprises a supporting block, a pressing block, a lead screw which is rotatably connected with the other end of the supporting block and is horizontally arranged, and a hand wheel which is fixedly connected with one end of the lead screw away from the; briquetting threaded connection has seted up two arc walls respectively in the relative inboard of briquetting and supporting shoe, and every can enclose into one to the arc wall and put the district in control, overlaps respectively on inlet tube and the outlet pipe and establishes and be fixed with the pipe, and two pipes correspond two respectively and put the setting in control. The utility model discloses a set up fixing device, be convenient for fix inlet tube and outlet pipe to can reduce the possibility that inlet tube and outlet pipe and cryogenic refrigerator took place to separate.

Description

Freezing and thawing circulator

Technical Field

The utility model relates to a concrete freezing resistance test equipment technical field, more specifically the saying so, it relates to a freeze thawing cycle machine.

Background

In order to detect the frost resistance of the concrete test piece, the temperature change of the natural environment needs to be simulated, and the test of the concrete test piece is called as a freeze-thaw test. The freeze-thaw test consists of multiple freeze-thaw cycles. The freeze-thaw cycle can be divided into various types according to different test requirements, and a typical one is to control the freeze-thaw cycle at 12 hours, and the freeze-thaw cycle comprises a cooling stage (4 hours), a holding stage (3 hours), a heating stage (4 hours) and a holding stage (1 hour). The time and the temperature required by the cooling stage are changed according to a linear relation, namely within 4 hours, the temperature is uniformly reduced from minus-upper 20 ℃ to minus-lower 20 ℃, then the temperature is maintained at minus-lower 20 ℃ for three hours, then the temperature is raised, the time and the temperature required by the heating stage are changed according to a linear relation, namely within 4 hours, the temperature is uniformly increased from minus-lower 20 ℃ to minus-upper 20 ℃, then the temperature is maintained at minus-upper 20 ℃ for one hour, and a freeze-thaw cycle is completed.

In the prior art, reference can be made to a Chinese utility model patent with an authorization publication number of CN208999329U, which discloses a simple freeze thawing circulator, comprising a low-temperature freezing box, a water inlet pipe, a water inlet pump, a water outlet pipe, a water outlet pump and a circulating water tank; the circulating water tank is arranged on one side of the low-temperature freezing box, a water inlet of the water inlet pump is communicated with the bottom end of the circulating water tank, a water outlet of the water inlet pump is connected with one end of a water inlet pipe, and the other end of the water inlet pipe extends into the low-temperature freezing box; the water outlet of the water outlet pump is communicated with the top end of the circulating water tank, the water inlet of the water outlet pump is connected with one end of a water outlet pipe, the other end of the water outlet pipe extends into the low-temperature freezer, and the water inlet pipe and the water outlet pipe are hoses; the liquid refrigeration system is characterized in that a liquid electric heater is arranged in the low-temperature refrigeration box and connected with a first power supply, and a control device used for controlling the liquid electric heater to operate is further arranged on a line connecting the first power supply and the liquid electric heater. After a period of time in the low temperature freezer, the concrete test piece injects water into the low temperature freezer through the inlet tube, after the liquid level reaches the assigned position in the low temperature freezer, stops the water injection and starts the liquid electric heater, with the water heating in the low temperature freezer to the assigned temperature can, need not shift out the concrete test piece from the low temperature freezer through the manual work, reach the effect of effectively saving time and manpower resources consumption.

However, do not install the fixing device who is used for going on fixing inlet tube and outlet pipe in above-mentioned cryogenic refrigerator, because inlet tube and outlet pipe are the hose, so the one end that the inlet tube kept away from the inlet pump when the inlet pump operation is likely to take place the swing, thereby probably can make the one end that the inlet tube kept away from the inlet pump take place to separate with cryogenic refrigerator, therefore inconvenient inlet tube supplies water to cryogenic refrigerator, the one end that the outlet tube kept away from the outlet pump when the outlet pump operation is likely to take place to swing, thereby probably can make the one end that the outlet tube kept away from the outlet pump take place to separate with cryogenic refrigerator, thereby inconvenient outlet tube takes out the water in the cryogenic.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a freeze thawing cycle machine, it is convenient for fix inlet tube and outlet pipe through setting up fixing device to can reduce the possibility that inlet tube and outlet pipe and cryogenic refrigerator took place to separate.

In order to achieve the above purpose, the utility model provides a following technical scheme: a freeze thawing circulating machine comprises a low-temperature freezing box, a water inlet pipe, a water inlet pump, a water outlet pipe, a water outlet pump, a circulating water tank and a storage frame, wherein a fixing device for fixing the water inlet pipe and the water outlet pipe is installed on the side wall of the low-temperature freezing box; the pressing block is in threaded connection with the lead screw, two arc-shaped grooves are formed in the opposite inner sides of the pressing block and the supporting block respectively, each pair of arc-shaped grooves can form a pipe releasing area, circular pipes are fixedly sleeved on the water inlet pipe and the water outlet pipe respectively, and the two circular pipes correspond to the two pipe releasing areas respectively.

By adopting the technical scheme, when the circular pipe needs to be fixed, the circular pipe is positioned between the supporting block and the pressing block, then the lead screw is rotated by rotating the hand wheel, and the lead screw rotates to drive the pressing block to move, so that the circular pipe can be fixed, and further the water inlet pipe or the water outlet pipe can be fixed; to sum up, through setting up fixing device, be convenient for fix inlet tube and outlet pipe to can reduce the possibility that inlet tube and outlet pipe and low temperature freezer take place to separate.

The utility model discloses further set up to: the side of the pressing block close to the supporting block is fixedly connected with a guide rod, and one side of the supporting block close to the pressing block is provided with a sliding groove for the guide rod to slide along the length direction of the low-temperature freezing box.

Through adopting above-mentioned technical scheme, the spout has limiting displacement to the guide arm to can reduce the briquetting and rotate the possibility together along with the lead screw.

The utility model discloses further set up to: and an installation mechanism for installing a water inlet pipe is installed on the water outlet of the water inlet pump.

Through adopting above-mentioned technical scheme, through setting up installation mechanism, be convenient for install the inlet tube to be convenient for change the inlet tube.

The utility model discloses further set up to: the mounting mechanism comprises a connecting pipe communicated with the water outlet of the water inlet pump, a circular ring fixedly connected to the inner wall of the connecting pipe and a plurality of spring steel sheets uniformly distributed along the circumferential direction of the circular ring; each spring steel sheet is obliquely arranged towards the axial lead direction of the connecting pipe; install in the connecting pipe and be used for promoting the spring steel sheet to the promotion subassembly that is close to the motion of connecting pipe inner wall, the inner wall that the connecting pipe kept away from intake pump one end is installed seal assembly.

By adopting the technical scheme, when the water inlet pipe needs to be installed, the spring steel sheet is pressed through the pushing assembly, the spring steel sheet is in a compressed state at the moment, then the water inlet pipe is inserted into the connecting pipe, then the pushing assembly is loosened, the pushing assembly resets under the action of the spring steel sheet, and after the pushing assembly resets, the spring steel sheet presses the water inlet pipe at the moment, so that the water inlet pipe can be fixed; when the water inlet pipe needs to be detached, the spring steel sheet is pressed through the pushing assembly, and finally the water inlet pipe is pulled out; to sum up, through setting up installation mechanism, be convenient for carry out the dismouting to the inlet tube.

The utility model discloses further set up to: the pushing assembly comprises a pressing ring, a transition pipe and a pushing pipe, wherein the transition pipe is communicated with one end, close to the connecting pipe, of the pressing ring, and the pushing pipe is communicated with one end, far away from the pressing ring, of the transition pipe; the pressing ring is arranged to protrude out of the top of the connecting pipe; the pushing pipe slides in the connecting pipe along the axial direction of the connecting pipe.

Through adopting above-mentioned technical scheme, the manual push press ring removes, and press ring removes and drives the removal of ejector sleeve pipe, is convenient for support the pressure to the spring steel sheet like this.

The utility model discloses further set up to: the shape of the pushing pipe is in a round table shape, and the sectional area of the pushing pipe is sequentially increased from one end close to the pressing ring to one end far away from the pressing ring.

Through adopting above-mentioned technical scheme, be convenient for insert the inlet tube in the connecting tube on the one hand, on the other hand can reduce the possibility that the promotion pipe drove the inlet tube and remove at the removal in-process.

The utility model discloses further set up to: the sealing assembly comprises a limiting ring fixedly connected to the inner wall of one end, far away from the water inlet pump, of the connecting pipe and a sealing ring arranged on the inner circumferential surface of the limiting ring; the inner side wall of the limiting ring and the inner side wall of the sealing ring are both abutted to the outer side wall of the transition pipe.

Through adopting above-mentioned technical scheme, through setting up spacing ring and sealing washer, can reduce the possibility that the water takes place to leak from the junction of connecting pipe and inlet tube.

The utility model discloses further set up to: one side of the low-temperature freezing box, which is close to the water inlet pump, is rotatably connected with two guide wheels, each guide wheel is provided with an annular groove on the outer peripheral surface, and the two annular grooves are respectively arranged corresponding to the water inlet pipe and the water outlet pipe.

Through adopting above-mentioned technical scheme, through setting up the leading wheel, be convenient for support inlet tube and outlet pipe, therefore can alleviate the friction of inlet tube and outlet pipe and low temperature freezer roof.

To sum up, the utility model discloses compare and have following beneficial effect in prior art:

1. when the circular pipe needs to be fixed, the circular pipe is located between the supporting block and the pressing block, then the lead screw is rotated by rotating the hand wheel, and the lead screw rotates to drive the pressing block to move, so that the circular pipe can be fixed, and further the water inlet pipe or the water outlet pipe can be fixed; in conclusion, the water inlet pipe and the water outlet pipe are convenient to fix by arranging the fixing device, so that the possibility of separation of the water inlet pipe and the water outlet pipe from the low-temperature freezing box can be reduced;

2. when the water inlet pipe needs to be installed, the spring steel sheet is pressed through the pushing assembly, the spring steel sheet is in a compressed state at the moment, then the water inlet pipe is inserted into the connecting pipe, then the pushing assembly is loosened, the pushing assembly resets under the action of the spring steel sheet, and after the pushing assembly resets, the spring steel sheet presses the water inlet pipe at the moment, so that the water inlet pipe can be fixed; when the water inlet pipe needs to be detached, the spring steel sheet is pressed through the pushing assembly, and finally the water inlet pipe is pulled out; in conclusion, the water inlet pipe is convenient to disassemble and assemble by arranging the mounting mechanism;

3. through setting up spacing ring and sealing washer, can reduce the possibility that the water takes place to leak from the junction of connecting pipe and inlet tube.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view showing the structure of the fastening device in the embodiment;

FIG. 3 is a partial cross-sectional view of a highlighted mounting mechanism of an embodiment.

In the figure: 1. a low temperature freezer; 11. a water inlet pipe; 12. a water inlet pump; 13. a water outlet pipe; 14. discharging the water pump; 15. a circulating water tank; 2. a fixing device; 21. a support block; 22. briquetting; 23. a lead screw; 24. a hand wheel; 25. a guide bar; 26. a chute; 27. an arc-shaped slot; 28. a circular tube; 3. an installation mechanism; 31. a connecting pipe; 32. a circular ring; 33. a spring steel sheet; 4. a pushing assembly; 41. pressing a ring; 42. a transition duct; 43. pushing the pipe; 5. a seal assembly; 51. a limiting ring; 52. a seal ring; 6. a guide wheel; 61. an annular groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b): a freeze thawing cycle machine, as shown in fig. 1 and 2, comprises a low-temperature freezing box 1, a water inlet pipe 11, a water inlet pump 12, a water outlet pipe 13, a water outlet pump 14, a cycle water tank 15 and a storage frame, wherein a fixing device 2 for fixing the water inlet pipe 11 and the water outlet pipe 13 is installed on the side wall of the low-temperature freezing box 1.

The fixing device 2 comprises a supporting block 21 fixedly connected to the side wall of the low-temperature freezing box 1, a pressing block 22 connected to one end of the supporting block 21 in a sliding manner along the length direction of the low-temperature freezing box 1, a lead screw 23 which is rotatably connected to the other end of the supporting block 21 through a bearing and is horizontally arranged, and a hand wheel 24 fixedly connected to one end, far away from the supporting block 21, of the lead screw 23; briquetting 22 is close to one side rigid coupling of supporting shoe 21 has guide arm 25, supporting shoe 21 is close to one side of briquetting 22 and offers the spout 26 that is used for supplying guide arm 25 to slide along the length direction of low temperature freezer 1, briquetting 22 threaded connection is in lead screw 23, two arc walls 27 have been seted up respectively to briquetting 22 and supporting shoe 21's relative inboard, every can enclose into a pipe laying area to arc wall 27, it is fixed with pipe 28 to overlap respectively on inlet tube 11 and the

outlet pipe

13, 28 accessible bonding modes of pipe and inlet tube 11 or outlet pipe 13 fixed connection, two pipe 28 correspond two pipe laying area settings respectively. When the circular tube 28 needs to be fixed, the circular tube 28 is located between the supporting block 21 and the pressing block 22, then the lead screw 23 is rotated by rotating the hand wheel 24, the lead screw 23 rotates to drive the pressing block 22 to move, so that the circular tube 28 can be fixed, and further the water inlet pipe 11 or the water outlet pipe 13 can be fixed; to sum up, through setting up fixing device 2, be convenient for fix inlet tube 11 and outlet pipe 13 to can reduce the possibility that inlet tube 11 and outlet pipe 13 and low temperature freezer 1 take place to separate.

As shown in fig. 1 and 3, an installation mechanism 3 for installing the water inlet pipe 11 is installed on the water outlet of the water inlet pump 12, and the installation mechanism 3 includes a connecting pipe 31 communicated with the water outlet of the water inlet pump 12, a circular ring 32 fixedly connected to the inner wall of the connecting pipe 31, and a plurality of spring steel sheets 33 uniformly distributed along the circumferential direction of the circular ring 32; each spring steel sheet 33 is obliquely arranged towards the axial lead direction of the connecting pipe 31; the connecting pipe 31 is internally provided with a pushing component 4 for pushing the spring steel sheet 33 to move towards the inner wall close to the connecting pipe 31, and the inner wall of the connecting pipe 31 far away from one end of the water inlet pump 12 is provided with a sealing component 5. When the water inlet pipe 11 needs to be installed, the spring steel sheet 33 is pressed through the pushing assembly 4, the spring steel sheet 33 is in a compressed state at the moment, then the water inlet pipe 11 is inserted into the connecting pipe 31, then the pushing assembly 4 is loosened, the pushing assembly 4 is reset under the action of the spring steel sheet 33, and after the pushing assembly 4 is reset, the spring steel sheet 33 presses the water inlet pipe 11 at the moment, so that the water inlet pipe 11 can be fixed; when the water inlet pipe 11 needs to be detached, the spring steel sheet 33 is pressed by the pushing assembly 4, and finally the water inlet pipe 11 is pulled out; in conclusion, the water inlet pipe 11 is convenient to disassemble and assemble by arranging the installation mechanism 3.

The pushing assembly 4 comprises a pressing ring 41, a transition pipe 42 communicated with one end of the pressing ring 41 close to the connecting pipe 31 and a pushing pipe 43 communicated with one end of the transition pipe 42 far away from the pressing ring 41; the pressing ring 41 is arranged by protruding the top of the connecting pipe 31; the pushing pipe 43 slides in the connecting pipe 31 in the axial direction of the connecting pipe 31; the thrust tube 43 has a circular truncated cone shape, and the sectional area of the thrust tube 43 increases in order from the end closer to the pressure ring 41 to the end farther from the pressure ring 41. The pressing ring 41 is pushed manually to move, and the pressing ring 41 moves to drive the pushing pipe 43 to move, so that the spring steel sheet 33 is pressed conveniently.

The sealing assembly 5 comprises a limiting ring 51 fixedly connected to the inner wall of one end of the connecting pipe 31 far away from the water inlet pump 12 and a sealing ring 52 inserted in the inner circumferential surface of the limiting ring 51; the inner side wall of the limiting ring 51 and the inner side wall of the sealing ring 52 are abutted against the outer side wall of the transition pipe 42. By providing the stopper ring 51 and the seal ring 52, the possibility of water leakage from the joint between the connection pipe 31 and the water inlet pipe 11 can be reduced.

One side that low temperature freezer 1 is close to intake pump 12 is rotated and is connected with two leading wheels 6, has seted up ring channel 61 on the outer peripheral face of every leading wheel 6, and two ring channels 61 correspond inlet tube 11 and outlet pipe 13 setting respectively, and leading wheel 6 includes the mount pad, and mount pad accessible pivot is rotated and is connected in the lateral wall of low temperature freezer 1, and pivot accessible nut rigid coupling is in the lateral wall of low temperature freezer 1. Through setting up leading wheel 6, be convenient for support inlet tube 11 and outlet pipe 13, therefore can alleviate the friction of inlet tube 11 and outlet pipe 13 and low temperature freezer 1 roof.

The working principle of the freeze-thaw circulating machine is as follows:

when the circular tube 28 needs to be fixed, the circular tube 28 is located between the supporting block 21 and the pressing block 22, then the screw 23 is rotated by rotating the hand wheel 24, the screw 23 rotates to drive the pressing block 22 to move, and therefore the circular tube 28 can be fixed, and further the water inlet pipe 11 or the water outlet pipe 13 can be fixed.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a freeze thawing cycle machine, includes low temperature freezer (1), inlet tube (11), intake pump (12), outlet pipe (13), outlet pump (14), circulation tank (15) and puts the thing frame, its characterized in that: the side wall of the low-temperature freezing box (1) is provided with a fixing device (2) for fixing a water inlet pipe (11) and a water outlet pipe (13), the fixing device (2) comprises a supporting block (21) fixedly connected to the side wall of the low-temperature freezing box (1), a pressing block (22) connected to one end of the supporting block (21) in a sliding manner along the length direction of the low-temperature freezing box (1), a lead screw (23) which is rotatably connected to the other end of the supporting block (21) and is horizontally arranged, and a hand wheel (24) fixedly connected to one end, far away from the supporting block (21), of the lead screw (; the pressing block (22) is in threaded connection with the lead screw (23), two arc-shaped grooves (27) are formed in the opposite inner sides of the pressing block (22) and the supporting block (21) respectively, each pair of arc-shaped grooves (27) can form a pipe placing area, round pipes (28) are fixedly sleeved on the water inlet pipe (11) and the water outlet pipe (13) respectively, and the round pipes (28) are arranged corresponding to the two pipe placing areas respectively.

2. A freeze-thaw cycle machine according to claim 1, wherein: one side of the pressing block (22) close to the supporting block (21) is fixedly connected with a guide rod (25), and one side of the supporting block (21) close to the pressing block (22) is provided with a sliding groove (26) for the guide rod (25) to slide along the length direction of the low-temperature freezing box (1).

3. A freeze-thaw cycle machine according to claim 1, wherein: and an installation mechanism (3) for installing the water inlet pipe (11) is installed on the water outlet of the water inlet pump (12).

4. A freeze/thaw cycle machine according to claim 3, wherein: the mounting mechanism (3) comprises a connecting pipe (31) communicated with a water outlet of the water inlet pump (12), a circular ring (32) fixedly connected to the inner wall of the connecting pipe (31) and a plurality of spring steel sheets (33) uniformly distributed along the circumferential direction of the circular ring (32); each spring steel sheet (33) is obliquely arranged towards the axial lead direction of the connecting pipe (31); install in connecting pipe (31) and be used for promoting spring steel sheet (33) to pushing away subassembly (4) that is close to connecting pipe (31) inner wall motion, sealing component (5) are installed to the inner wall of intake pump (12) one end is kept away from in connecting pipe (31).

5. The freeze-thaw cycle machine according to claim 4, wherein: the pushing assembly (4) comprises a pressing ring (41), a transition pipe (42) communicated with one end, close to the connecting pipe (31), of the pressing ring (41), and a pushing pipe (43) communicated with one end, far away from the pressing ring (41), of the transition pipe (42); the pressing ring (41) is arranged by protruding the top of the connecting pipe (31); the pushing pipe (43) slides in the connecting pipe (31) along the axial direction of the connecting pipe (31).

6. The freeze-thaw cycle machine according to claim 5, wherein: the pushing pipe (43) is in a circular truncated cone shape, and the cross-sectional area of the pushing pipe (43) is gradually increased from one end close to the pressing ring (41) to one end far away from the pressing ring (41).

7. The freeze-thaw cycle machine according to claim 6, wherein: the sealing assembly (5) comprises a limiting ring (51) fixedly connected to the inner wall of one end, far away from the water inlet pump (12), of the connecting pipe (31) and a sealing ring (52) arranged on the inner circumferential surface of the limiting ring (51); the inner side wall of the limiting ring (51) and the inner side wall of the sealing ring (52) are abutted to the outer side wall of the transition pipe (42).

8. A freeze-thaw cycle machine according to claim 1, wherein: one side of the low-temperature freezing box (1) close to the water inlet pump (12) is rotatably connected with two guide wheels (6), each guide wheel (6) is provided with an annular groove (61) on the outer peripheral surface, and the annular grooves (61) are respectively arranged corresponding to the water inlet pipe (11) and the water outlet pipe (13).