A meat quick-freezing device that is easy to take out and put in and a method of using the same

Abstract

The invention discloses a meat quick-freezing device which is convenient for taking and placing and a method for using the same, belonging to the technical field of quick-freezing devices, and comprising an upper shell and a lower shell; a chain plate conveyor line is arranged in the lower shell, a synchronous telescopic assembly is arranged on the inner side of the chain plate conveyor line, and a plurality of brackets for fixing a salted duck in a standard state are fixedly mounted on the synchronous telescopic assembly; the brackets can be telescoped on the chain plate conveyor line; a plurality of groups of spray heads are arranged in the upper shell, the spray heads comprise an outer spray head and an inner spray head, the outer spray head is used for directly spraying liquid nitrogen, and the inner spray head is used for injecting liquid nitrogen into the inner cavity of the salted duck; through the above-mentioned method, in the present invention, the inner spray head is aligned with the inner cavity of the salted duck and then sprays liquid nitrogen into the inner cavity of the salted duck, and the inner spray head can always accurately inject liquid nitrogen into the inner cavity of the salted duck, thereby ensuring the stable quick-freezing quality of the salted duck; when the quick-frozen salted duck leaves the lower shell, the bracket automatically retracts into the inner side of the chain plate conveyor line, and the salted duck can be directly discharged from the chain plate conveyor line and connected to the next device without manual material placement.

Description

Technical Field

[0001] The invention relates to the technical field of quick-freezing equipment, and in particular to a meat quick-freezing equipment which is convenient for taking and placing, and a use method thereof. Background Art

[0002] Salted duck is a traditional Chinese delicacy. It is made from salted duck through a series of processes. After cooling, it needs to be cooled and shaped by quick-freezing equipment in order to achieve the effect of long-term preservation while maintaining the quality of the finished product. Salted duck is large in size, has a deep inner cavity and a relatively smooth surface, so the effect of quick freezing by spraying liquid nitrogen on the outside of the salted duck is poor.

[0003] The Chinese patent with publication number CN111972478A discloses a poultry tunnel quick freezer, which includes a tunnel body, a conveyor belt and a spray head located above the conveyor belt; the conveyor belt is provided with a plurality of racks for fixing poultry in an inverted position and pulling the body cavity of the poultry open to face the spray head. The quick freezer fixes the poultry in an inverted position through the racks, and allows liquid nitrogen to be directly sprayed into the body cavity of the poultry to achieve a quick freezing effect on the poultry. However, the device still has the following problems:

[0004] 1. The quick freezer needs to control the conveyor belt by controlling the motor to align the poultry body cavity with the spray head to achieve the effect of injecting liquid nitrogen into the poultry body cavity. During long-term use, it may not be possible to accurately control the alignment between the poultry body cavity and the spray head, thereby affecting the injection effect of liquid nitrogen;

[0005] 2. The quick freezer fixes the poultry through a bracket fixed on the conveyor belt, which is not convenient for taking and placing the poultry meat. When using the quick freezer, it is necessary to set a manual position at the feeding end and the discharging end of the conveyor belt to achieve the taking and placing of the poultry meat, which will consume a lot of manpower and make the conveyor belt of the quick freezer unable to be directly connected to the equipment used in the subsequent process (such as a packaging machine).

[0006] Based on this, the present invention designs a meat quick-freezing device that is easy to take out and put in and a method of using the device to solve the above problems. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a meat quick-freezing device that is easy to take out and put in, and a method for using the same.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A meat quick-freezing device that is easy to take out and put in, comprising an upper shell and a lower shell;

[0010] The lower shell is provided with a chain plate conveyor line for conveying salted duck, a synchronous telescopic assembly is provided inside the chain plate conveyor line, and a plurality of brackets for fixing the salted duck in a standard state are fixedly installed on the synchronous telescopic assembly; a through hole for sliding with the bracket is provided on the chain plate of the chain plate conveyor line, and the bracket can be telescopic on the chain plate conveyor line;

[0011] The upper shell is provided with a plurality of spray heads for spraying liquid nitrogen, the spray heads include an outer spray head and an inner spray head, the outer spray head is used for directly spraying liquid nitrogen, and the inner spray head is used for injecting liquid nitrogen into the inner cavity of the salted duck;

[0012] A cleaning mechanism for cleaning the chain plates of the chain plate conveyor line is provided between the lower side of the chain plate conveyor line and the inner bottom of the lower shell body.

[0013] Furthermore, the inner nozzle includes a liquid spray pipe, an upper support plate, a lower support plate and a torsion spring, one end of the upper support plate is fixedly connected to the inner top of the upper shell body, the other end of the upper support plate is hinged to the lower support plate through a hinge shaft, and the hinge shafts of the upper support plate and the lower support plate are provided with a torsion spring for opening the upper support plate and the lower support plate; the liquid spray pipe is fixedly connected to the upper support plate and the lower support plate; the upper support plate is provided with a sensor for sensing the position of the lower support plate.

[0014] Furthermore, the lower support plate is inclined toward the conveying direction of the chain conveyor line.

[0015] Furthermore, the synchronous telescopic assembly includes side panels, support plates, rollers and slide rails. The two side panels are fixedly installed on the front and rear sides of the chain conveyor line, and a number of support plates cooperating with the brackets are provided on the inner side of the side panels; slide rails are provided on the side panels, and rollers rollingly connected to the slide rails are fixedly installed at both ends of the support plates.

[0016] Furthermore, the slide rail is configured as a closed ring to cooperate with the chain conveyor line, and the slide rail is composed of an outward extending section and an inward contracting section.

[0017] Furthermore, the upper part of the synchronous telescopic assembly located at the feed end of the chain conveyor line and directly below the upper shell is set as an extending section, and the rest of the synchronous telescopic assembly is set as a retracted section; when the roller of the support plate is located in the retracted section, the bracket is completely retracted into the inner side of the chain conveyor line.

[0018] Furthermore, the bracket includes a head support rod and two leg support rods, both of which are slidably connected to the through holes, and the head support rod and the leg support rods on the same chain plate are fixedly connected to the same support plate; the head support rod is used to coil around the neck of the salted duck, and the two leg support rods are located on the inner side of the legs of the salted duck to spread the salted duck apart.

[0019] Furthermore, the cleaning mechanism includes a deicing assembly and a cleaning assembly, the deicing assembly and the cleaning assembly are arranged between the lower side of the chain conveyor line and the inner bottom of the lower shell, and the cleaning assembly is located on the right side of the deicing assembly.

[0020] Furthermore, the cleaning assembly includes an air jet pipe and a scraper, the scraper is fixedly installed on the lower side of the chain conveyor line, and the scraper is aligned with the chain of the chain conveyor line; a plurality of air jet pipes are fixedly installed on the inner bottom of the lower shell body, the air inlet end of the air jet pipe is connected to the air transmission equipment, and the air outlet end of the air jet pipe is aligned with the contact part between the scraper and the connecting plate.

[0021] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a meat quick-freezing device that is easy to take out and put, comprising the following steps:

[0022] Step 1: The worker coils the neck of the salted duck on the head support rod, and places the legs of the salted duck on the two leg support rods to spread the salted duck, so that the salted duck is placed in a standard state at the feeding end of the chain conveyor line, and the chain conveyor line drives the salted duck to move; the external nozzle in the upper shell directly sprays liquid nitrogen to cool the salted duck;

[0023] Step 2: The salted duck moves slowly, and the salted duck contacts the liquid spray pipe and pushes the liquid spray pipe to rotate. When the liquid spray pipe is aligned with the inner cavity of the salted duck, the lower support plate resets the liquid spray pipe under the action of the torsion spring and extends into the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate, it sends an electrical signal to the central control, so that the liquid spray pipe automatically sprays liquid nitrogen into the inner cavity of the salted duck; the salted duck continues to move until the head of the liquid spray pipe leaves the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate, it sends an electrical signal to the central control, so that the liquid spray pipe stops injecting liquid nitrogen;

[0024] Step 3: The quick-frozen salted duck leaves the upper shell, the roller of the support plate rolls from the extended section to the retracted section, the head support rod and the leg support rod retract into the chain plate conveyor line and no longer block the salted duck, and the salted duck leaves the chain plate conveyor line;

[0025] Step 4: The de-icing component continuously bridges the surface of the chain plate, and then scrapes off the attachments on the surface of the chain plate through the scraper, while the jet pipe continuously sprays air to assist in cleaning the attachments on the surface of the chain plate;

[0026] Step 5: The head support rod and the leg support rod return to the feeding end of the chain conveyor line, the roller of the support plate rolls from the retracted section to the extended section, the head support rod and the leg support rod extend from the chain conveyor line, and the worker repeats the loading work of the salted duck.

[0027] The present invention has the following technical effects:

[0028] 1. In the present invention, workers place the salted duck in a standard state on the feeding end of the chain conveyor line through a bracket, and the outer nozzle sprays liquid nitrogen to the salted duck to perform quick freezing operation on the salted duck; the inner nozzle is located on the path through which the inner cavity opening of the salted duck passes, and during the slow movement of the salted duck, the inner nozzle is moved by the salted duck until the inner nozzle is aligned with the inner cavity of the salted duck. At this time, the inner nozzle extends into the inner cavity of the salted duck to spray liquid nitrogen, thereby increasing the effect of uniform quick freezing of the salted duck as a whole, and the chain conveyor line can continuously transport the salted duck, and the inner nozzle can always accurately inject liquid nitrogen into the inner cavity of the salted duck, thereby ensuring the stable quick freezing quality of the salted duck.

[0029] 2. In the present invention, the synchronous telescopic component can control the telescopic movement of the bracket. When the quick-frozen salted duck leaves the lower shell, the bracket automatically retracts into the inner side of the chain conveyor line without blocking the movement of the salted duck. The salted duck can be directly discharged from the chain conveyor line and connected to the next equipment without manual material placement, which saves manpower and is beneficial to the automated production process of the salted duck. When the bracket flows back to the discharge end of the chain conveyor line, the bracket automatically resets, so that the workers can normally carry out the placement and fixation operations of the salted duck. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A three-dimensional diagram of a meat quick-freezing device that is easy to take out and put in according to the present invention;

[0032] Figure 2 It is a front view of a meat quick-freezing device that is easy to take out and put in according to the present invention;

[0033] Figure 3 is a three-dimensional diagram of the inner nozzle of the present invention;

[0034] Figure 4 The three-dimensional structure of the chain plate conveyor line of the present invention Figure 1 ;

[0035] Figure 5 The three-dimensional structure of the chain plate conveyor line of the present invention Figure 2

[0036] Figure 6 A three-dimensional diagram of a side panel of a synchronous telescopic assembly of the present invention;

[0037] Figure 7 is a three-dimensional diagram of the bracket of the present invention;

[0038] Figure 8 It is a three-dimensional diagram of the cleaning mechanism of the present invention.

[0039] The numbers in the figure represent:

[0040] 100, upper shell; 200, lower shell; 300, chain plate conveyor line; 310, through hole; 400, spray head; 410, external nozzle; 420, internal nozzle; 421, spray pipe; 422, upper support plate; 423, lower support plate; 424, torsion spring; 500, bracket; 510, head support rod; 520, leg support rod; 600, synchronous telescopic component; 610, side plate; 620, support plate; 630, roller; 640, slide rail; 641, extension section; 642, retraction section; 700, cleaning mechanism; 710, deicing component; 711, drive motor; 712, cam; 713, mounting frame; 714, connecting plate; 715, connecting rod; 716, knocking plate; 720, cleaning component; 721, jet pipe; 722, scraper. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0042] The present invention will be further described below in conjunction with the embodiments.

[0043] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0044] Example 1

[0045] Please refer to the instruction manual Figure 1-3 , a meat quick-freezing device that is easy to take out and put in, comprising an upper shell 100 and a lower shell 200;

[0046] The lower shell 200 is provided with a chain plate conveyor line 300 for conveying salted duck, and a synchronous telescopic assembly 600 is provided inside the chain plate conveyor line 300, and a plurality of brackets 500 for fixing the salted duck in a standard state are fixedly installed on the synchronous telescopic assembly 600, and the standard state of the salted duck is set as follows: the neck of the salted duck is coiled and fixed by manual arrangement, the legs of the salted duck are spread out, and the inner cavity opening of the salted duck is set upward; the inner nozzle 420 is located on the path through which the inner cavity opening of the salted duck passes;

[0047] The chain plate of the chain plate conveyor line 300 is provided with a through hole 310 for sliding with the bracket 500, and the bracket 500 can be extended and retracted on the chain plate conveyor line 300;

[0048] The upper shell 100 is provided with a plurality of groups of spray heads 400 for spraying liquid nitrogen, and the spray heads 400 include an outer nozzle 410 and an inner nozzle 420. The outer nozzle 410 is used for directly spraying liquid nitrogen to cool the salted duck as a whole, and the inner nozzle 420 is used for injecting liquid nitrogen into the inner cavity of the salted duck to quickly and fully cool the salted duck. A cleaning mechanism 700 for cleaning the chain of the chain conveyor line 300 is provided between the lower side of the chain conveyor line 300 and the inner bottom of the lower shell 200.

[0049] In the present invention, workers place the salted duck in a standard state on the feeding end of the chain conveyor line 300 through the bracket 500. The chain conveyor line 300 drives the salted duck to enter the lower side of the upper shell 100, and the outer nozzle 410 sprays liquid nitrogen to the salted duck to quickly freeze the salted duck; during the slow movement of the salted duck, the inner nozzle 420 is moved by the salted duck body until the inner nozzle 420 is aligned with the inner cavity of the salted duck. At this time, the inner nozzle 420 extends into the inner cavity of the salted duck to spray liquid nitrogen, thereby increasing the effect of uniform quick freezing of the salted duck as a whole. In addition, the chain conveyor line 300 can continuously transport the salted duck, and the inner nozzle 420 can always accurately inject liquid nitrogen into the inner cavity of the salted duck to ensure the stable quick freezing quality of the salted duck.

[0050] The quick-frozen salted duck leaves the lower shell 200. At this time, under the action of the synchronous telescopic component 600, the bracket 500 automatically retracts into the inner side of the chain conveyor line 300 through the through hole 310 without blocking the movement of the salted duck. The salted duck can be directly discharged from the chain conveyor line 300 and connected to the next equipment without manual material placement, which saves manpower and is beneficial to the automated production process of the salted duck; the cleaning mechanism 700 on the lower side of the chain conveyor line 300 always cleans the chain of the chain conveyor line 300 to avoid the formation of ice or adhesion of debris on the chain, and the bracket 500 on the lower side of the chain conveyor line 300 always retracts into the inner side of the chain conveyor line 300 without affecting the normal operation of the cleaning mechanism 700; when the bracket 500 flows back to the discharge end of the chain conveyor line 300, the synchronous telescopic component 600 drives the bracket 500 to reset, so that the workers can normally carry out the placement and fixing of the salted duck.

[0051] The inner nozzle 420 includes a liquid spraying pipe 421, an upper support plate 422, a lower support plate 423 and a torsion spring 424. One end of the upper support plate 422 is fixedly connected to the inner top of the upper shell 100, and the other end of the upper support plate 422 is hinged to the lower support plate 423 through a hinge shaft. The hinge shafts of the upper support plate 422 and the lower support plate 423 are provided with a torsion spring 424 for opening the upper support plate 422 and the lower support plate 423; the liquid spraying pipe 421 is fixedly connected to the upper support plate 422 and the lower support plate 423; the liquid spraying pipe 421 is communicated with a device for controlling the supply of liquid nitrogen; the upper support plate 422 is provided with a sensor for sensing the position of the lower support plate 423;

[0052] The lower support plate 423 is inclined toward the conveying direction of the chain plate conveyor line 300;

[0053] In the present invention, when the salted duck fixed in a standard state by the bracket 500 is conveyed by the chain conveyor line 300, the salted duck contacts the spray pipe 421 and pushes the spray pipe 421 to rotate. When the spray pipe 421 is aligned with the inner cavity of the salted duck, the lower support plate 423 resets the spray pipe 421 under the action of the torsion spring 424 and extends it into the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate 423, it sends an electrical signal to the central control, so that the spray pipe 421 automatically sprays liquid nitrogen into the inner cavity of the salted duck, thereby increasing the quick-freezing effect and quality of the salted duck; the salted duck continues to move until the head of the spray pipe 421 leaves the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate 423, it sends an electrical signal to the central control, so that the spray pipe 421 stops injecting liquid nitrogen.

[0054] Example 2

[0055] like Figure 4-7 As shown, as a preferred embodiment of the present invention, the synchronous telescopic assembly 600 includes a side plate 610, a support plate 620, a roller 630 and a slide rail 640. The two side plates 610 are fixedly installed on the front and rear sides of the chain plate conveyor line 300. The inner side of the side plate 610 is provided with a plurality of support plates 620 for fixing the bracket 500; the slide rail 640 is provided on the side plate 610, and the rollers 630 rollingly connected to the slide rail 640 are fixedly installed at both ends of the support plate 620;

[0056] The slide rail 640 is configured to be a closed ring that cooperates with the chain plate conveyor line 300 to operate, and the slide rail 640 is composed of an extended section 641 and a retracted section 642;

[0057] The portion of the synchronous telescopic assembly 600 located at the feeding end of the chain plate conveyor line 300 and directly below the upper shell 100 is set as an extended section 641, and the remaining portion of the synchronous telescopic assembly 600 is set as a retracted section 642; when the roller 630 of the support plate 620 is located at the retracted section 642, the bracket 500 is completely retracted into the inner side of the chain plate conveyor line 300, and will not block the discharge of the salted duck;

[0058] The support 500 includes a head support rod 510 and two leg support rods 520, both of which are slidably connected to the through hole 310, and the head support rod 510 and the leg support rod 520 on the same chain plate of the chain plate conveyor line 300 are fixedly connected to the same support plate 620; the head support rod 510 is used to coil around the neck of the salted duck, and the two leg support rods 520 are located on the inner side of the legs of the salted duck to open the salted duck, and the head support rod 510 and the leg support rod 520 cooperate to fix the salted duck in a standard state, so that the inner cavity opening of the salted duck is exposed upward;

[0059] In the present invention, after the worker places the salted duck in a standard state at the feeding end of the chain conveyor line 300 through the head support rod 510 and the leg support rod 520, the chain conveyor line 300 drives the salted duck to move, and the support plate 620 moves synchronously with the chain of the chain conveyor line 300 driven by the head support rod 510 and the leg support rod 520; when the roller 630 of the support plate 620 rolls in the extended section 641, the head support rod 510 and the leg support rod 520 extend from the chain conveyor line 300 to ensure the fixing effect of the salted duck; when the roller 630 of the support plate 620 rolls in the retracted section 642, the head support rod 510 and the leg support rod 520 retract into the chain conveyor line 300, so that the salted duck can be discharged normally without being blocked, and will not affect the normal operation of the cleaning mechanism 700.

[0060] Example 3

[0061] like Figure 8 As shown, as a preferred embodiment of the present invention, the cleaning mechanism 700 includes a deicing assembly 710 and a cleaning assembly 720, the deicing assembly 710 and the cleaning assembly 720 are arranged between the lower side of the chain plate conveyor line 300 and the inner bottom of the lower shell 200, and the cleaning assembly 720 is located on the right side of the deicing assembly 710;

[0062] The deicing assembly 710 includes a driving motor 711, a cam 712, a mounting frame 713, a connecting plate 714, a connecting rod 715 and a knocking plate 716. The mounting frame 713 is fixedly mounted on the lower side of the chain plate conveyor line 300, the upper end of the connecting rod 715 is fixedly connected to the knocking plate 716, and the lower end of the connecting rod 715 is slidably connected to the mounting frame 713 and is fixedly connected to the connecting plate 714 through the mounting frame 713; the driving motor 711 is fixedly mounted on the inner bottom of the lower housing 200, and the output end of the driving motor 711 is fixedly mounted with a cam 712 for knocking the connecting plate 714;

[0063] The cleaning assembly 720 includes an air jet pipe 721 and a scraper 722, wherein the scraper 722 is fixedly mounted on the lower side of the chain conveyor line 300, and the scraper 722 is aligned with the chain of the chain conveyor line 300; a plurality of air jet pipes 721 are fixedly mounted on the inner bottom of the lower housing 200, wherein the air inlet end of the air jet pipe 721 is connected to the air delivery device, and the air outlet end of the air jet pipe 721 is aligned with the contact end of the scraper 722 and the chain;

[0064] In the present invention, the driving motor 711 drives the cam 712 to rotate to continuously push the connecting plate 714, and the connecting plate 714 drives the knocking plate 716 to move vertically through the connecting rod 715, so that the knocking plate 716 continuously knocks the chain plate of the chain plate conveyor line 300 to remove the ice on the surface of the chain plate, and then the attachments on the surface of the chain plate are scraped off by the scraper 722. At the same time, the jet pipe 721 continuously sprays airflow to assist in cleaning the attachments, so that the chain plate conveyor line 300 can continue to operate normally for a long time.

[0065] Example 4

[0066] like Figure 1-8 As shown, as a preferred embodiment of the present invention, a method for using a meat quick-freezing device that is easy to take out and put in is also provided, comprising the following steps:

[0067] Step 1: The worker wraps the neck of the salted duck around the head support rod 510, and places the legs of the salted duck on the two leg support rods 520 to spread the salted duck, so that the salted duck is placed in a standard state at the feeding end of the chain conveyor line 300, and the chain conveyor line 300 drives the salted duck to move; the external nozzle 410 in the upper shell 100 directly sprays liquid nitrogen to cool the salted duck;

[0068] Step 2: The salted duck moves slowly, and the salted duck contacts the spray pipe 421 to push the spray pipe 421 to rotate. When the spray pipe 421 is aligned with the inner cavity of the salted duck, the lower support plate 423 resets the spray pipe 421 under the action of the torsion spring 424 and extends into the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate 423, it sends an electrical signal to the central control, so that the spray pipe 421 automatically sprays liquid nitrogen into the inner cavity of the salted duck; the salted duck continues to move until the head of the spray pipe 421 leaves the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate 423, it sends an electrical signal to the central control, so that the spray pipe 421 stops injecting liquid nitrogen;

[0069] Step 3: The quick-frozen salted duck leaves the upper housing 100, and the roller 630 of the support plate 620 rolls from the extended section 641 to the retracted section 642, and the head support rod 510 and the leg support rod 520 retract into the chain plate conveyor line 300 and no longer block the salted duck, and the salted duck leaves the chain plate conveyor line 300;

[0070] Step 4: The knocking plate 716 continuously knocks the chain plate of the chain plate conveyor line 300 to remove ice on the surface of the chain plate, and then the scraper 722 scrapes off the attachments on the surface of the chain plate, and at the same time, the jet pipe 721 continuously sprays air to assist in cleaning the attachments;

[0071] Step 5: The head support rod 510 and the leg support rod 520 flow back to the feeding end of the chain conveyor line 300, the roller 630 of the support plate 620 rolls from the retracted section 642 to the extended section 641, the head support rod 510 and the leg support rod 520 extend from the chain conveyor line 300, and the worker repeats the loading work of the salted duck.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A meat quick-freezing device that is easy to take out and put in, comprising an upper shell (100) and a lower shell (200), characterized in that: The lower shell (200) is provided with a chain plate conveyor line (300) for conveying salted duck, and a synchronous telescopic component (600) is provided inside the chain plate conveyor line (300). A plurality of brackets (500) for fixing the salted duck in a standard state are fixedly mounted on the synchronous telescopic component (600). The standard state of the salted duck is set as follows: the neck of the salted duck is coiled and fixed, the legs of the salted duck are spread out, and the inner cavity opening of the salted duck is set upward; a through hole (310) for matching the sliding of the bracket (500) is provided on the chain plate of the chain plate conveyor line (300), and the bracket (500) can be telescopic on the chain plate conveyor line (300); The upper shell (100) is provided with a plurality of spray heads (400) for spraying liquid nitrogen, the spray heads (400) comprising an outer spray head (410) and an inner spray head (420), the outer spray head (410) being used for directly spraying liquid nitrogen, and the inner spray head (420) being used for injecting liquid nitrogen into the inner cavity of the salted duck; A cleaning mechanism (700) for cleaning the chain plates of the chain plate conveyor line (300) is provided between the lower side of the chain plate conveyor line (300) and the inner bottom of the lower shell (200); The inner spray head (420) comprises a liquid spray pipe (421), an upper support plate (422), a lower support plate (423) and a torsion spring (424); one end of the upper support plate (422) is fixedly connected to the inner top of the upper shell (100); the other end of the upper support plate (422) is hinged to the lower support plate (423) via a hinge shaft; the hinge shafts of the upper support plate (422) and the lower support plate (423) are provided with a torsion spring (424) for opening the upper support plate (422) and the lower support plate (423); the liquid spray pipe (421) is fixedly connected to the upper support plate (422) and the lower support plate (423); and the upper support plate (422) is provided with a sensor for sensing the position of the lower support plate (423).

2. The meat quick-freezing equipment that is easy to take out and put away according to claim 1 is characterized in that: The lower support plate (423) is inclined toward the conveying direction of the chain plate conveyor line (300).

3. The meat quick-freezing equipment that is easy to take out and put away according to claim 2 is characterized in that: The synchronous telescopic assembly (600) comprises a side plate (610), a support plate (620), a roller (630) and a slide rail (640); the two side plates (610) are fixedly mounted on the front and rear sides of the chain plate conveyor line (300); a plurality of support plates (620) cooperating with the bracket (500) are arranged on the inner side of the side plate (610); the slide rail (640) is arranged on the side plate (610); and rollers (630) rollingly connected to the slide rail (640) are fixedly mounted at both ends of the support plate (620).

4. The meat quick-freezing equipment that is easy to take out and put away according to claim 3 is characterized in that: The slide rail (640) is configured as a closed ring that cooperates with the chain plate conveyor line (300) to operate, and the slide rail (640) is composed of an outwardly extending section (641) and an inwardly contracted section (642).

5. The meat quick-freezing equipment that is easy to take out and put away according to claim 4 is characterized in that: The portion of the synchronous telescopic assembly (600) located on the upper side of the chain conveyor line (300) and directly below the upper shell (100) is set as an extended section (641), and the remaining portion of the synchronous telescopic assembly (600) is set as a retracted section (642); when the roller (630) of the support plate (620) is located in the retracted section (642), the bracket (500) is completely retracted into the inner side of the chain conveyor line (300).

6. The meat quick-freezing equipment that is easy to take out and put away according to claim 5 is characterized in that: The support (500) comprises a head support rod (510) and two leg support rods (520), wherein the head support rod (510) and the leg support rod (520) are both slidably connected to the through hole (310), and the head support rod (510) and the leg support rod (520) on the same chain plate are fixedly connected to the same support plate (620); the head support rod (510) is used to coil around the neck of the salted duck, and the two leg support rods (520) are located on the inner side of the legs of the salted duck to spread the salted duck apart.

7. The meat quick-freezing equipment that is easy to take out and put away according to claim 6 is characterized in that: The cleaning mechanism (700) comprises a deicing assembly (710) and a cleaning assembly (720); the deicing assembly (710) and the cleaning assembly (720) are arranged between the lower side of the chain plate conveyor line (300) and the inner bottom of the lower shell (200); the cleaning assembly (720) is located on the right side of the deicing assembly (710).

8. The meat quick-freezing equipment that is easy to take out and put away according to claim 7 is characterized in that: The cleaning assembly (720) comprises an air jet pipe (721) and a scraper (722), wherein the scraper (722) is fixedly mounted on the lower side of the chain plate conveyor line (300), and the scraper (722) is aligned with the chain plates of the chain plate conveyor line (300); a plurality of air jet pipes (721) are fixedly mounted on the inner bottom of the lower housing (200), the air inlet end of the air jet pipe (721) is connected to the air transmission equipment, and the air outlet end of the air jet pipe (721) is aligned with the contact portion between the scraper (722) and the connecting plate.

9. A method for using the meat quick-freezing equipment that is easy to take out and put in according to claim 8, characterized in that: The following steps are involved: Step 1: A worker coils the neck of the salted duck around the head support rod (510), and places the legs of the salted duck on two leg support rods (520) to spread the salted duck, so that the salted duck is placed in a standard state at the feeding end of the chain conveyor line (300), and the chain conveyor line (300) drives the salted duck to move; the external nozzle (410) in the upper shell (100) directly sprays liquid nitrogen to cool the salted duck; Step 2: the salted duck moves slowly, and the salted duck contacts the liquid spraying pipe (421) to push the liquid spraying pipe (421) to rotate. When the liquid spraying pipe (421) is aligned with the inner cavity of the salted duck, the lower support plate (423) resets the liquid spraying pipe (421) under the action of the torsion spring (424) and extends into the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate (423), it sends an electrical signal to the central control, so that the liquid spraying pipe (421) automatically sprays liquid nitrogen into the inner cavity of the salted duck; the salted duck continues to move until the tube head of the liquid spraying pipe (421) leaves the inner cavity of the salted duck. After the sensor detects the movement of the lower support plate (423), it sends an electrical signal to the central control, so that the liquid spraying pipe (421) stops injecting liquid nitrogen; Step 3: The quick-frozen salted duck leaves the upper shell (100), the roller (630) of the support plate (620) rolls from the extended section (641) to the retracted section (642), the head support rod (510) and the leg support rod (520) retract into the chain plate conveyor line (300) and no longer block the salted duck, and the salted duck leaves the chain plate conveyor line (300); Step 4: the de-icing assembly (710) continuously bridges the surface of the chain plate, and then scrapes off the attachments on the surface of the chain plate through the scraper (722), while the jet pipe (721) continuously sprays air to assist in cleaning the attachments on the surface of the chain plate; Step 5: The head support rod (510) and the leg support rod (520) flow back to the feeding end of the chain conveyor line (300), the roller (630) of the support plate (620) rolls from the retracted section (642) to the extended section (641), the head support rod (510) and the leg support rod (520) extend from the chain conveyor line (300), and the worker repeats the feeding work of the salted duck.

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