Continuous ultralow-temperature freezing equipment for blade or steel strip

Abstract

The utility model relates to the technical field of freezing processing, in particular to blade or steel strip continuous ultralow-temperature freezing equipment which comprises a freezing cavity, a cold source is arranged in the freezing cavity, an exhaust port and a liquid outlet are formed in the freezing cavity, a feeding hole and a discharging hole are formed in the feeding position and the discharging position of the freezing cavity, a cover plate is connected to the top end of the freezing cavity in a sealed mode, and a freezing track is arranged in the freezing cavity. A cold guide plate is arranged above the freezing track, the two ends of the freezing track are connected with a feeding hole and a discharging hole respectively, and a purging device is arranged on the feeding hole or the discharging hole and used for purging the surface of a product located at the feeding hole or the discharging hole; the freezing track can provide supporting and guiding for products, the products enter from the feeding hole in one side of the box body and reach the discharging hole through the freezing track, it can be guaranteed that the freezing temperature of the products is uniform in the section of the freezing track, and the blowing device is arranged so that frost generated when the products make contact with outside air after being frozen can be removed; and the feeding hole or the discharging hole cannot be frosted under long-time low-temperature work.

Description

Technical Field

[0001] The utility model relates to the technical field of freezing processing, in particular to blade or steel belt continuous ultra-low temperature freezing equipment. Background Art

[0002] When processing continuous blades or steel strips, the hardness of the blades can be increased after water quenching, but the effect is better after quenching at sub-zero temperatures. There is currently no low-temperature equipment specifically for continuous freezing quenching of blades or steel strips. Water quenching is usually used. Since the liquid temperature in the water pool is uneven and unstable during quenching, the product quality and production efficiency cannot be guaranteed. Based on this, the present application provides a device for continuous ultra-low temperature freezing of blades or steel strips. Utility Model Content

[0003] The purpose of the utility model is to provide a blade or steel belt continuous ultra-low temperature freezing device, which solves the problems of uneven freezing and easy frost formation of products.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: blade or steel belt continuous ultra-low temperature freezing equipment, including a freezing chamber, a cold source in the freezing chamber, an exhaust port and a drain port on the freezing chamber, the freezing chamber is provided with a feed hole and a discharge hole at the feeding and discharging points, a cover plate is sealed and connected to the top of the freezing chamber, a freezing track is provided in the freezing chamber, a cold guide plate is provided above the freezing track, the two ends of the freezing track are respectively connected to the feed hole and the discharge hole, a purge device is provided on the feed hole or the discharge hole, and the purge device is used to purge the surface of the product located at the feed hole or the discharge hole.

[0005] The above technical solution is provided with a freezing track, which can provide support and guidance for the product. The product enters from the feed hole on one side of the box body and reaches the discharge hole through the freezing track. The freezing temperature of the product can be guaranteed to be uniform in this section of the freezing track. A purge device is provided to blow towards the surface of the product at the feed hole or the discharge hole, which can remove frost generated by the contact of the product with the external air after freezing, and ensure that the feed hole or the discharge hole will not frost under long-term low-temperature operation, thereby ensuring the safe and reliable operation of the equipment.

[0006] The invention comprises a box body for accommodating a freezing cavity and the box body has two freezing cavities. A sealing strip adapted to the opening of the freezing cavity is provided on the top of the box body. The cover plate is hinged to the top of the box body and a seal is formed by squeezing between the cover plate and the sealing strip.

[0007] The above technical solution is equipped with two freezing chambers, which can realize independent temperature control of each freezing chamber. Different working temperatures can be adjusted for different types of products to improve product quality. In addition, sealing strips are provided to achieve thermal insulation and reduce heat loss.

[0008] The box body is provided with a first guide block and a second guide block at the feeding and discharging positions respectively. The first guide block has an inlet hole and the second guide block has an outlet hole. Both ends of the cold conduction plate are in contact with the first guide block and the second guide block respectively.

[0009] The above technical solution has a first guide block and a second guide block corresponding to the feed hole and the discharge hole respectively. The first guide block and the second guide block are used as the feed hole and the discharge hole respectively. The setting of the cold conduction plate can evenly distribute the temperature to the first guide block and the second guide block, so that the product can be evenly cooled.

[0010] An electrical control box is installed on one side of the box body, and a motor is provided in the electrical control box. The output end of the motor extends into the freezing chamber. A fan connected to the output end of the motor is provided in the freezing chamber. A wind shield is also provided above the fan. The wind shield is an L-shaped structure, and an air outlet corresponding to the fan is opened on the side of the wind shield.

[0011] The above technical solution provides a fan to evenly disperse the cooling gas in the freezing chamber to ensure a uniform temperature in the chamber.

[0012] The purging device includes a blow pipe, one end of which is connected to an air source, and a plurality of blow nozzles are provided on the blow pipe, and the blow nozzles are arranged toward the material inlet or the material outlet.

[0013] The above technical solution provides a blowpipe, which can effectively remove frosted parts of the product exposed to the air.

[0014] The feed hole or the discharge hole is provided with a protection section, which is a sleeve, and the sleeve is used for the product to pass through.

[0015] The above technical solution allows the product to pass through the sleeve, which can prevent the product from frosting when exposed to the air after being cooled at low temperature, and avoid frost melting into water, which may cause rust or water stains on the product surface.

[0016] The cross-sectional line of the bottom of the freezing chamber is inclined upward from the material inlet to the material outlet. The exhaust port is arranged on one side of the freezing chamber close to the material outlet, and the drain port is arranged at the lowest point of the freezing chamber.

[0017] The freezing chamber structure of the above technical solution can reduce the volume inside the chamber, thereby reducing the consumption of cooling gas. The bottom surface of the freezing chamber is arranged at an angle, so that the liquid can flow into the drain port through the bottom surface of the freezing chamber. The exhaust port is arranged at the top of the freezing chamber, so that the gas and liquid in the freezing chamber are completely discharged. In addition, the exhaust port and the drain port can be equipped with recovery devices for recycling to save resources.

[0018] The bottom of the box body has a bracket, one side of the cover plate is hinged to the top of the box body and a pneumatic rod is provided on the same side of the box body. A traction frame is connected to the cover plate, one end of the pneumatic rod is hinged to the traction frame, and the other end is hinged to the bracket.

[0019] The above technical solution sets a bracket for supporting the box body, and the bottom end of the bracket also has a foot support with adjustable height, and the cover can be automatically opened and closed by a pneumatic rod.

[0020] The box body is provided with a heating device, which includes a heating belt and a heating wire. The heating belt is attached to the outer wall of the box body at the inlet and outlet holes. The heating wire is in the shape of a ring tube and is sleeved on the fan. The outlet pipe of the heating wire passes through the freezing chamber and extends to the outside of the box body.

[0021] The above technical solution sets a heating belt and a heating wire. The heating belt is used to heat the outer surface of the box, while the heating wire can be used for heating and defrosting when the device is idle, and the freezing chamber is dried to facilitate the next use.

[0022] Technical effects and advantages of this utility model:

[0023] 1. In this solution, the freezing track can provide support and guidance for the product. The product enters from the inlet hole on one side of the box, passes through the freezing track to the outlet hole, and the freezing temperature of the product can be guaranteed to be uniform in this section of the freezing track.

[0024] 2. In this solution, a purge device is provided to purge the surface of the product at the feed hole or the discharge hole, which can remove frost generated by the product coming into contact with the outside air after being frozen, thereby ensuring that the feed hole or the discharge hole will not frost under long-term low-temperature operation, thereby ensuring the safe and reliable operation of the equipment.

[0025] 3. In this solution, by setting up multiple freezing chambers, the temperature of each freezing chamber can be independently controlled, and different working temperatures can be adjusted for different types of products to improve product production quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of Example 1 provided by the present utility model;

[0027] Figure 2 A transverse cross-sectional view of Example 1 provided by the present utility model;

[0028] Figure 3 A transverse cross-sectional view of Example 2 provided by the present utility model;

[0029] Figure 4 A perspective view of Example 3 provided by the present utility model;

[0030] Figure 5 A transverse cross-sectional view of Example 3 provided by the present utility model;

[0031] Figure 6A longitudinal sectional view of the refrigeration equipment provided by the utility model;

[0032] Figure 7 for Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 8 This is a schematic diagram of the structure of the heating belt in the heating device provided by the utility model;

[0034] Figure 9 This is a structural schematic diagram of the heating belt in the heating device provided by the utility model from another perspective;

[0035] Figure 10 This is a schematic structural diagram of the heating wire in the heating device provided by the utility model.

[0036] Figure numerals: 1. Box body; 101. Freezing chamber; 102. Exhaust port; 103. Drain port; 2. Cover plate; 3. Traction frame; 4. Pneumatic rod; 5. Electric control box; 6. Bracket; 7. Foot support; 8. Workpiece; 9. Three-color light; 10. Wind shield; 11. Motor; 12. Fan; 13. Cold guide plate; 14. Freezing track; 15. First guide block; 16. Second guide block; 17. Sealing strip; 18. Sleeve; 19. Blow pipe; 20. Blow nozzle; 21. Heating belt; 22. Heating wire. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Example 1

[0039] This embodiment provides Figure 1 and Figure 2 The blade or steel strip continuous ultra-low temperature freezing device shown in the figure comprises a box body 1 having a freezing chamber 101. The freezing chamber 101 may be one or more. The blade or steel strip is described as a product in the following. Figure 1 As shown, in order to improve the use effect, two freezing chambers 101 are used. The top of the box body 1 is provided with a sealing strip 17 adapted to the opening of the freezing chamber 101. The cover plate 2 is hinged to the top of the box body 1 and the cover plate 2 and the sealing strip 17 are squeezed to form a seal, so that there is a cold source in the freezing chamber 101. The cold source of this embodiment is liquid nitrogen, which can be Figure 1 The liquid nitrogen interface shown in FIG is used to deliver liquid nitrogen into each freezing chamber 101. For the sake of integrity, as shown in FIG. Figure 2As shown, the freezing chamber 101 is provided with an exhaust port 102 and a drain port 103. The freezing chamber 101 is provided with an inlet hole and an outlet hole at the feeding and discharging points. A cooling plate 13 is provided on the top of the freezing chamber 101, and the workpiece passes through the upper part of the cooling plate 13 for cooling.

[0040] Furthermore, if Figure 6 As shown, the bottom of the box 1 has a bracket 6, one side of the cover 2 is hinged to the top of the box 1 and a pneumatic rod 4 is provided on the same side of the box 1, the cover 2 is connected to the traction frame 3, one end of the pneumatic rod 4 is hinged to the traction frame 3, and the other end is hinged to the bracket 6, wherein the bracket 6 is used to support the box 1, and the bottom end of the bracket 6 also has a height-adjustable foot support 7, the bottom end of each leg of the bracket 6 has a threaded hole, the foot support 7 is connected to the threaded hole through a threaded rod, and the cover 2 can be automatically opened and closed by the pneumatic rod 4.

[0041] In this embodiment, an electric control box 5 is installed on one side of the box body 1. The electric control box 5 has a motor 11. The output end of the motor 11 extends into the freezing chamber 101. A fan 12 connected to the output end of the motor 11 is provided in the freezing chamber 101. A windshield 10 is provided above the fan 12. The windshield 10 is an L-shaped structure. An air outlet corresponding to the fan 12 is opened on the side of the windshield 10. Figure 1 As shown, the product enters from the feed hole, passes above the cold guide plate 13 and reaches the discharge hole. When the equipment is working, the cover plate 2 is closed under the drive of the gas rod. The combination of the cover plate 2 and the sealing strip 17 ensures the airtightness of each freezing chamber 101. An electric control box 5 is installed on one side of the box body 1, and the electric control box 5 is connected to the motor 11 and the pneumatic rod 4.

[0042] Example 2

[0043] This embodiment provides Figure 3 The blade or steel belt continuous ultra-low temperature freezing device shown in the figure comprises a box body 1 having two freezing chambers 101. The difference between this embodiment and embodiment 1 is that Figure 4 As shown, a freezing track 14 is further provided in the freezing chamber 101. The freezing track 14 is a tubular structure with small holes evenly opened on its surface. A cold guide plate 13 is provided above the freezing track 14. The workpiece passes through the freezing chamber 13 for cooling. The two ends of the freezing track 14 are respectively connected to the feed hole and the discharge hole. A purge device is provided on the feed hole of this embodiment, and the purge device is used to purge the surface of the product at the feed hole or the discharge hole.

[0044] Specifically, if Figure 7 As shown, the purging device includes a blow pipe 19, which is arranged on one side of the box body 1. One end of the blow pipe 19 is connected to the air source. A plurality of blow nozzles 20 are provided on the blow pipe 19. The blow nozzles 20 are arranged toward the feed hole. When the product enters from the feed hole, the frosted parts of the product exposed to the air can be effectively removed through the blow nozzles 20.

[0045] like Figure 4 As shown, the box body 1 of this embodiment is respectively provided with a first guide block 15 and a second guide block 16 at the feed and discharge points, the freezing track 14 is arranged between the first guide block 15 and the second guide block 16, the first guide block 15 has a feed hole, the second guide block 16 has a discharge hole, the two ends of the cold conduction plate 13 are respectively in contact with the first guide block 15 and the second guide block 16, by respectively arranging the first guide block 15 and the second guide block 16 at the feed hole and the discharge hole, the first guide block 15 and the second guide block 16 are respectively used as the feed hole and the discharge hole, and the cold conduction plate 13 can evenly disperse the temperature to the first guide block 15 and the second guide block 16, so that the product can be evenly frozen and cooled, thereby improving the product quality.

[0046] Example 3

[0047] This embodiment provides Figure 4 and Figure 5 The blade or steel belt continuous ultra-low temperature freezing equipment shown is based on Example 2, that is, a purge device is provided on one side of the feed hole, and a protective section is provided on the side of the discharge hole. The protective section of this embodiment adopts a sleeve 18, which is fixedly installed on the discharge hole and connected to the discharge hole so that the product can pass through, and the workpiece passes through the freezing chamber 101 for cooling.

[0048] Furthermore, by wrapping the product with the sleeve 18, it is possible to prevent the product from frosting when exposed to the air after being cooled at low temperatures, and to prevent frost from melting into water and causing rust or water stains on the product surface.

[0049] Example 4

[0050] On the basis of Example 2, this embodiment removes the cold conduction plate 13 , and the workpiece passes through the freezing chamber 13 via the freezing track 14 to be cooled.

[0051] In the above embodiments 1-4, the freezing track 14 can provide support and guidance for the product. The product enters from the feed hole on one side of the box body 1 and reaches the discharge hole through the freezing track 14. The freezing temperature of the product can be kept uniform in this section of the freezing track 14. A blowing device is provided to blow towards the surface of the product at the feed hole or the discharge hole, which can remove frost generated by the contact of the product with the external air after freezing, and ensure that the feed hole or the discharge hole will not frost under long-term low-temperature operation, thereby ensuring the safe and reliable operation of the equipment.

[0052] Since there are two freezing chambers 101, the cold source is connected to each freezing chamber 101 through a liquid nitrogen pipeline and each liquid nitrogen pipeline is provided with a liquid nitrogen control valve. The box body 1 is also provided with a temperature control system, so that the temperature of each freezing chamber 101 can be independently controlled. The temperature control system includes a PLC and a temperature control module. The temperature control modules are respectively located in the freezing chamber 101 and are used to detect the temperature of the freezing chamber 101. The PLC adjusts the corresponding liquid nitrogen control valve by collecting data from the temperature control modules to achieve temperature control. This equipment can adopt different working temperatures for different types of products to improve product quality. In addition, a sealing strip 17 is provided to achieve thermal insulation and reduce heat loss.

[0053] In order to ensure the stable operation of the cold source and facilitate timely troubleshooting, an alarm is also installed on the electric control box 5. The alarm of this embodiment selects a three-color light 9, which is connected to the PLC. When the temperature control module or the liquid nitrogen control valve fails, the three-color light 9 can flash in time to instruct the staff to handle it.

[0054] Furthermore, in the above embodiment, the fan 12 is used to evenly disperse the cooling gas in the freezing chamber 101 to ensure uniform temperature in the chamber. The cross-sectional line at the bottom of the freezing chamber 101 is inclined upward from the inlet hole to the outlet hole. The exhaust port 102 is arranged on the side of the freezing chamber 101 close to the outlet hole, and the drain port 103 is arranged at the lowest point of the freezing chamber 101. The structure of the freezing chamber 101 can reduce the volume in the chamber, thereby reducing the consumption of cooling gas. The bottom surface of the freezing chamber 101 is arranged at an angle, so that the liquid can flow into the drain port 103 through the bottom surface of the freezing chamber 101. The exhaust port 102 is arranged at the top of the freezing chamber 101, so that all the gas and liquid in the freezing chamber 101 are discharged. In addition, the exhaust port 102 and the drain port 103 can be provided with a recovery device for recycling to save resources.

[0055] In addition, in Examples 1-4, a heating device is also provided on the box body 1, and the heating device includes a heating belt 21 and a heating wire 22. The heating belt 21 and the heating wire 22 are connected to a heating controller to realize automatic control of the heating temperature, wherein the heating belt 21 is attached to the outer surface of the box body 1, and the heating wire 22 is arranged next to the fan 12.

[0056] Furthermore, if Figure 8 and Figure 9 As shown, the heating belt 21 is arranged on the outer wall of the box body 1 at both ends of the inlet and outlet holes, thereby heating the outer surface of the box body 1. Figure 10 As shown, the heating wire 22 is annularly tubular and is sleeved on the fan 12, and the outlet pipe of the heating wire 22 passes through the freezing chamber 101 and extends to the outside of the box body 1. The heating wire 22 can be used to heat and defrost the device before it is idle, and the freezing chamber 101 can be dried to facilitate the next use.

[0057] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blade or steel belt continuous ultra-low temperature freezing device, comprising a freezing chamber (101), wherein the freezing chamber (101) has a cold source, and the freezing chamber (101) is provided with an exhaust port (102) and a liquid discharge port (103), characterized in that: The freezing chamber (101) is provided with an inlet hole and an outlet hole at the feeding and discharging points, the top of the freezing chamber (101) is sealed with a cover plate (2), a freezing track (14) is provided in the freezing chamber (101), a cold guide plate (13) is provided above the freezing track (14), the two ends of the freezing track (14) are respectively connected to the inlet hole and the outlet hole, and a purge device is provided on the inlet hole or the outlet hole, and the purge device is used to purge the surface of the product located at the inlet hole or the outlet hole.

2. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 1, characterized in that: The invention comprises a box body (1) for accommodating a freezing cavity (101), wherein the box body (1) has two freezing cavities (101), a sealing strip (17) adapted to the opening of the freezing cavity (101) is provided at the top of the box body (1), and the cover plate (2) is hinged to the top of the box body (1), and a seal is formed by squeezing between the cover plate (2) and the sealing strip (17).

3. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 1 or 2, characterized in that: The box body (1) is provided with a first guide block (15) and a second guide block (16) at the feeding and discharging positions, respectively. The first guide block (15) has an inlet hole, and the second guide block (16) has an outlet hole. The two ends of the cold guide plate (13) are in contact with the first guide block (15) and the second guide block (16), respectively.

4. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 2, characterized in that: An electric control box (5) is installed on one side of the box body (1), and a motor (11) is provided in the electric control box (5). The output end of the motor (11) extends into the freezing chamber (101), and a fan (12) connected to the output end of the motor (11) is provided in the freezing chamber (101). A windshield (10) is also provided above the fan (12), and the windshield (10) is an L-shaped structure. An air outlet corresponding to the fan (12) is opened on the side of the windshield (10).

5. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 4, characterized in that: The purging device comprises a blow pipe (19), one end of which is connected to an air source, and a plurality of blow nozzles (20) are provided on the blow pipe (19), and the blow nozzles (20) are arranged toward a material inlet or a material outlet.

6. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 5, characterized in that: A protection section is provided on the material inlet or the material outlet, and the protection section is a sleeve (18). The sleeve (18) is used for the product to pass through.

7. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 3, characterized in that: The cross-sectional line of the bottom of the freezing chamber (101) is inclined upward from the feed hole to the discharge hole, the exhaust port (102) is arranged on a side of the freezing chamber (101) close to the discharge hole, and the liquid discharge port (103) is arranged at the lowest point of the freezing chamber (101).

8. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 2, characterized in that: The bottom of the box (1) is provided with a bracket (6), one side of the cover plate (2) is hinged to the top of the box (1), and a pneumatic rod (4) is provided on the same side of the box (1), a traction frame (3) is connected to the cover plate (2), one end of the pneumatic rod (4) is hinged to the traction frame (3), and the other end is hinged to the bracket (6).

9. The blade or steel belt continuous ultra-low temperature freezing equipment according to claim 2, characterized in that: The box body (1) is provided with a heating device, which comprises a heating belt (21) and a heating wire (22). The heating belt (21) is attached to the outer wall of the box body (1) at the material inlet and outlet. The heating wire (22) is an annular tube-shaped tube that is sleeved on the fan (12), and the outlet pipe of the heating wire (22) passes through the freezing chamber (101) and extends to the outside of the box body (1).

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