Cured meat air-drying production air outlet assembly and cured meat air-drying production equipment thereof

Abstract

The utility model belongs to the technical field of food processing, and discloses a cured meat air-drying manufacturing air outlet assembly and cured meat air-drying manufacturing equipment thereof, the cured meat air-drying manufacturing air outlet assembly comprises an air inlet pipe, and the section of the air inlet pipe is gradually reduced in the length direction; one end of the air inlet pipe opposite to the widest section is an air inlet; one end of the air inlet pipe with the relatively narrowest section is closed; at least two air outlets are formed in the air inlet pipe in the length direction of the air inlet pipe. When low-temperature and low-humidity air enters from the air inlet and flows to one end with the smallest section of the air inlet pipe, part of the air flows out from the air outlet, the air pressure in the air inlet pipe is changed, the air pressure at each part in the air inlet pipe is relatively uniform as far as possible along with the reduction of the section of the air inlet pipe, and the air pressure difference between the two ends of the air inlet pipe is reduced; and when the air pressure at each position in the air inlet pipe is relatively uniform, the air speed of the air inlet pipe is relatively uniform, so that the air outlet quantity of each air outlet is relatively uniform as far as possible, and the relative uniformity of air drying of materials in the air drying fermentation chamber within a period of time is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the food processing technical field, concretely relates to dried meat wind dry production air outlet subassembly and dried meat wind dry production equipment thereof. BACKGROUND

[0002] In the field of agricultural and sideline products processing, storage and transportation, drying is one of the most widely used methods. For some fruits and vegetables and some meat products, low-temperature drying is an important part of their production process. The degree and uniformity of drying are important indicators for evaluating the quality of the materials. In the process of batch production in enterprises, due to the uneven air flow organization in the drying equipment, such as the air inlet pipe in some air-drying fermentation chamber equipment, low-temperature and low-humidity air enters from one end of the air inlet pipe and is discharged from the air outlet on the side wall of the air inlet pipe, thereby introducing low-temperature and low-humidity air into the air-drying fermentation chamber. The low-temperature and low-humidity air dries the materials stored in the air-drying fermentation chamber. The air inlet pipe uses an air inlet pipe with the same cross section at the far end and the near end (as shown in FIG. Figure 7 This will cause the air volume near the far end air outlet of the air inlet pipe to be relatively large compared to the air volume near the near end air outlet of the air inlet pipe, affecting the relative uniformity of the air-drying fermentation chamber internal materials in a period of time. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a dried meat air-drying production air outlet subassembly and a dried meat air-drying production equipment. When the flowing air enters from the end with the largest cross section of the air inlet pipe and flows to the end with the smallest cross section of the air inlet pipe, the air pressure in the air inlet pipe changes as part of the air flows out of the air outlet. At this time, the air pressure at each part of the air inlet pipe is relatively uniform as much as possible as the cross section of the air inlet pipe decreases, reducing the air pressure difference between the air inlet end and the end of the air inlet pipe. When the air pressure at each part of the air inlet pipe is relatively uniform, the air speed of the air inlet pipe is relatively uniform. At the same time, since the cross section of each air outlet is the same, the air outlet volume of each air outlet is relatively uniform under the condition of relatively uniform air flow speed, thereby improving the relative uniformity of the air-drying fermentation chamber internal materials in a period of time.

[0004] The purpose of the utility model can be achieved by the following technical solutions:

[0005] The dried meat air-drying production air outlet subassembly comprises an air inlet pipe, and the cross section of the air inlet pipe gradually decreases along the length direction.

[0006] One end of the wide cross section of the air inlet pipe is an air inlet, and the air inlet introduces low-temperature and low-humidity air.

[0007] One end of the narrow cross section of the air inlet pipe is in a closed state.

[0008] The air inlet pipe is provided with at least two air outlets along the length direction of the air inlet pipe.

[0009] The above technical solution, principle and technical effects:

[0010] The low-temperature and low-humidity air enters the air inlet of the air inlet pipe and flows to the end with the narrowest cross section along the internal passage of the air inlet pipe.

[0011] If the air inlet pipe with the same cross section at the far end and the near end is used for air supply, the air pressure in the air inlet pipe will gradually decrease as part of the air flows out, and when the air pressure decreases, the flow rate of the air will also decrease, and since the cross section of the air inlet pipe at the far end and the near end is the same, the air volume passing through per unit time will also decrease, which will make the air volume of the air outlet close to the far end of the air inlet pipe and the air volume of the air outlet close to the near end of the air inlet pipe differ relatively greatly.

[0012] The cross section of the air inlet pipe of the present application gradually decreases along the length direction, and when the low-temperature and low-humidity air passes through each air outlet, part of the air will flow out of the air outlet, but the cross section of the air inlet pipe is gradually decreasing, so the air pressure in the air inlet pipe can be quickly stabilized, and the air pressure at each position in the air inlet pipe remains relatively uniform, and under the condition of relatively uniform air pressure, the air volume flowing out of each air outlet also remains relatively uniform, which will make the air volume of the air outlet close to the far end of the air inlet pipe and the air volume of the air outlet close to the near end of the air inlet pipe differ relatively less, thereby improving the relative uniformity of the air drying of the materials in the air drying fermentation chamber within a period of time.

[0013] In a preferred example, the air inlet pipe can be further configured as: the air inlet pipe is two, and the two air inlet pipes are arranged side by side on both sides of the top end inside the air drying fermentation chamber.

[0014] In a preferred example, the air inlet pipe can be further configured as: the outer side surface of the air inlet pipe is parallel to the inner side wall of the air drying fermentation chamber.

[0015] The inner side surface of the air inlet pipe is inclined.

[0016] The cross section of the air inlet pipe gradually decreases along the length direction.

[0017] In a preferred example, the air inlet pipe can be further configured as: the line of the at least two air outlets is parallel to the edge line of the outer side surface of the air inlet pipe.

[0018] In a preferred example, the air inlet pipe can be further configured as: the air outlet is close to the outer side surface of the air inlet pipe.

[0019] The utility model discloses in a preferable example can be further configured as: the equal spacing between adjacent air outlet.

[0020] The utility model discloses in a preferable example can be further configured as: the air outlet of the air inlet pipe is vertical downward, the cross section shape of the air outlet is one of rectangle or circle, and the cross section of the air outlet gradually reduces from top to bottom.

[0021] The utility model discloses in a preferable example can be further configured as: the air inlet of two air inlet pipes is communicated with the communicating pipe, the middle part of the communicating pipe is communicated with the follow-up pipe, and the air outlet of the fan is communicated with the follow-up pipe.

[0022] The utility model discloses in a preferable example can be further configured as: the air inlet of the air inlet pipe and the communicating pipe are communicated and are all installed with electric air valve, and the electric air valve is used for controlling the communication state between the air inlet pipe and the communicating pipe.

[0023] The equipment includes a dried sausage air-drying production outlet assembly.

[0024] The following explains the nouns, conjunctions or adjective parts involved in the above technical solutions:

[0025] Fixed connection refers to the connection of parts or components after being fixed, without any relative movement. It is divided into two kinds: detachable connection and non-detachable connection.

[0026] (1) Detachable connection is to fix the parts together by using screw, spline, wedge pin, etc. This connection mode can be disassembled during maintenance, and the parts will not be damaged. However, the specifications of the connecting parts (such as bolt, key, and wedge pin length) must be correct, and the fastening must be appropriate.

[0027] (2) Non-detachable connection mainly refers to welding, riveting and over mortise fitting, etc. Since maintenance or replacement requires forging, sawing or oxygen cutting for disassembly, the parts generally cannot be used twice. At the same time, attention should be paid to the process quality, technical detection and remedial measures (such as correction, polishing, etc.) during connection.

[0028] Threaded connection refers to the detachable connection of connecting parts by using threaded parts (or threaded parts of connected parts).

[0029] Sliding connection refers to the contact between two objects, but not fixed, and the two objects can slide relative to each other.

[0030] Rotary connection refers to the connection between parts, which allows the parts to rotate relative to each other.

[0031] The utility model discloses the beneficial effect:

[0032] The cross section of the air inlet pipe of the present application gradually decreases along the length direction, when the low-temperature and low-humidity air passes through each air outlet, although part of the air will flow out from the air outlet, the cross section of the air inlet pipe is gradually decreasing, therefore, the air pressure inside the air inlet pipe can be quickly stabilized, the air pressure at each position inside the air inlet pipe remains relatively uniform, under the condition of relatively uniform air pressure, the air flow from each air outlet also remains relatively uniform, which makes the air flow near the distal end air outlet of the air inlet pipe and the air flow near the proximal end air outlet of the air inlet pipe relatively small, thereby improving the relative uniformity of the air drying of the materials inside the air drying fermentation chamber within a period of time. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0034] Figure 1 It is a whole structure schematic diagram of the embodiment of the present application.

[0035] Figure 2 It is an internal structure schematic diagram of the air drying fermentation chamber of the embodiment of the present application.

[0036] Figure 3 It is an air inlet pipe structure schematic diagram of the embodiment of the present application, in which the air outlet is a square taper structure.

[0037] Figure 4 It is an air inlet pipe structure schematic diagram of the embodiment of the present application, in which the air outlet is a circular taper structure.

[0038] Figure 5 It is a first part structure schematic diagram of the electric air valve of the embodiment of the present application.

[0039] Figure 6 It is a second part structure schematic diagram of the electric air valve of the embodiment of the present application.

[0040] Figure 7 It is an air inlet pipe structure schematic diagram of the prior art, in which the distal end and the proximal end have the same cross section.

[0041] Figure 8 It is a speed cloud diagram of the air inlet pipe of the embodiment of the present application.

[0042] Figure 9 It is a speed distribution diagram of the air outlet under different tapers of the embodiment of the present application. DETAILED DESCRIPTION

[0043] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0045] According to the concept of the present application, embodiments of the wax dried meat drying and making air outlet assembly are described herein. Figures 1 to 6 Specifically, the wax dried meat drying and making air outlet assembly is configured in a split structure, which has the air inlet pipe 24, the air outlet 25 and the like. The low-temperature and low-humidity air enters the air inlet 241 of the air inlet pipe 24, flows along the internal passage of the air inlet pipe 24 to the end with the narrowest cross section of the air inlet pipe 24. During the flow process, the low-temperature and low-humidity air passes through multiple air outlets 25, and part of the air flows out of the air outlet 25 each time it passes through each air outlet 25. If the air inlet pipe 24 uses an air inlet pipe 24 with the same cross section at the far end to supply air, the air pressure in the air inlet pipe 24 will gradually decrease as part of the air flows out, and when the air pressure decreases, the flow rate of the air will also decrease. Since the cross section of the air inlet pipe 24 is the same at the far end, the amount of air passing through per unit time will also decrease, which will make the air volume of the air outlet 25 close to the far end of the air inlet pipe 24 relatively larger than that of the air outlet 25 close to the near end of the air inlet pipe 24. The cross section of the air inlet pipe 24 of the present application gradually decreases along the length direction, and although part of the air flows out of the air outlet 25 when the low-temperature and low-humidity air passes through each air outlet 25, the cross section of the air inlet pipe 24 is gradually decreasing, so that the air pressure inside the air inlet pipe 24 can be quickly stabilized, and the air pressure at each position inside the air inlet pipe 24 remains relatively uniform. Under the condition of relatively uniform air pressure, the air volume flowing out of each air outlet 25 also remains relatively uniform, which makes the air volume of the air outlet 25 close to the far end of the air inlet pipe 24 relatively smaller than that of the air outlet 25 close to the near end of the air inlet pipe 24, thereby improving the relative uniformity of the material drying in the air drying and fermentation chamber within a period of time.

[0046] As Figures 1-6As shown, the air-drying production air inlet assembly comprises an air inlet pipe 24, the cross section of the air inlet pipe 24 gradually decreases along the length direction;

[0047] One end of the air inlet pipe 24 with wide cross section is an air inlet 241, the air inlet 241 is connected to the low-temperature and low-humidity air;

[0048] One end of the air inlet pipe 24 with narrow cross section is in a closed state;

[0049] At least two air outlets 25 are arranged on the air inlet pipe 24 along the length direction of the air inlet pipe 24.

[0050] The low-temperature and low-humidity air enters the air inlet 241 of the air inlet pipe 24, and flows along the internal channel of the air inlet pipe 24 to the end with the narrowest cross section of the air inlet pipe 24. During the flowing process, the low-temperature and low-humidity air passes through the multiple air outlets 25, and part of the air flows out from each air outlet 25.

[0051] If the air inlet pipe 24 with the same cross section at the far end and the near end is used for air supply, the air pressure in the air inlet pipe 24 gradually decreases as part of the air flows out. When the air pressure decreases, the flow rate of the air also decreases. Since the cross section of the air inlet pipe 24 at the far end and the near end is the same, the air volume passing through per unit time also decreases, which makes the air volume of the air outlet 25 close to the far end of the air inlet pipe 24 and the air volume of the air outlet 25 close to the near end of the air inlet pipe 24 relatively large.

[0052] The cross section of the air inlet pipe 24 of the present application gradually decreases along the length direction. Although part of the air flows out from each air outlet 25 when the low-temperature and low-humidity air passes through each air outlet 25, the cross section of the air inlet pipe 24 is gradually decreasing, so that the air pressure in the air inlet pipe 24 can be quickly stabilized, and the air pressure at each position in the air inlet pipe 24 remains relatively uniform. Under the condition of relatively uniform air pressure, the air volume flowing out from each air outlet 25 also remains relatively uniform, which makes the air volume of the air outlet 25 close to the far end of the air inlet pipe 24 and the air volume of the air outlet 25 close to the near end of the air inlet pipe 24 relatively small, thereby improving the relative uniformity of the air-drying of the materials in the air-drying fermentation chamber within a period of time.

[0053] The traditional waxed meat production system is simulated winter outdoor natural air-drying environment in a low-temperature circulating air-drying chamber, and low-temperature and low-humidity air continuously absorbs water on the surface of food in forced circulation; the air in a saturated state passes through an evaporator, and the surface temperature of the evaporator is reduced to below the dew point temperature of the air due to evaporation of the refrigerant in the evaporator, and the air is cooled and water is separated after passing through the evaporator, and the separated water is discharged from the chamber by a water collector; the low-temperature and low-humidity air enters the condenser again, and the air is heated to form dry air because the high-temperature gaseous refrigerant from the compressor flows in the condenser; then, the low-temperature and low-humidity air is repeatedly circulated.

[0054] In one embodiment of the present application, the air inlet pipe 24 is two. As shown in Figure 2 Figure 2 It is an internal structure diagram of the air-drying fermentation chamber, and the two air inlet pipes 24 are arranged side by side at the two sides of the top end of the air-drying fermentation chamber. In actual use, the air-drying fermentation chamber is filled with an air-drying rack, and the materials to be dried are hung on the air-drying rack, and the low-temperature and low-humidity air is discharged from the air outlet 25 of the air inlet pipe 24, so that the low-temperature and low-humidity air is introduced into the air-drying fermentation chamber, and the low-temperature and low-humidity air is used for low-temperature air-drying of the materials stored in the air-drying fermentation chamber.

[0055] In one embodiment of the present application, as shown in Figure 2 The outer side of the air inlet pipe 24 is parallel to the inner side wall of the air-drying fermentation chamber, and the inner side of the air inlet pipe 24 is inclined, so that the cross section of the air inlet pipe 24 gradually decreases along the length direction. From the perspective of processing, only the inner side needs to be controlled to be inclined to the required taper, which facilitates the processing and production of the air inlet pipe 24. Of course, in some embodiments, the inner side of the air inlet pipe 24 is parallel to the inner side wall of the air-drying fermentation chamber, and the outer side of the air inlet pipe 24 is inclined, so that the cross section of the air inlet pipe 24 gradually decreases along the length direction. Of course, in some other embodiments, the outer side and the inner side of the air inlet pipe 24 are both inclined towards each other, so that the cross section of the air inlet pipe 24 gradually decreases along the length direction.

[0056] ​In one embodiment of the utility model, when the outer side of air inlet pipe 24 is parallel to the inner side wall of air drying fermentation chamber, the inner side of air inlet pipe 24 is inclined, so that the cross section of air inlet pipe 24 gradually decreases along the length direction, the line of at least two air outlets 25 is parallel to the edge line of the outer side of air inlet pipe 24. Of course, in some embodiments, when the inner side of air inlet pipe 24 is parallel to the inner side wall of air drying fermentation chamber, the outer side of air inlet pipe 24 is inclined, so that the cross section of air inlet pipe 24 gradually decreases along the length direction, the line of at least two air outlets 25 is parallel to the edge line of the inner side of air inlet pipe 24. Of course, in some other embodiments, when the outer side and the inner side of air inlet pipe 24 are both inclined in the opposite direction and have the same inclination angle, so that the cross section of air inlet pipe 24 gradually decreases along the length direction. At this time, the line of at least two air outlets 25 coincides with the mirror symmetry plane of air inlet pipe 24.

[0057] In one embodiment of the utility model, the air outlet 25 of air inlet pipe 24 faces vertically downward. As shown in Figure 2 It can be seen that, since the two air inlet pipes 24 are arranged side by side on both sides of the top of air drying fermentation chamber, the air outlet 25 of air inlet pipe 24 is arranged to face vertically downward, so that the low-temperature and low-humidity air flows vertically downward to the guide plate, and then flows to the material through the guide of the guide plate. Since the path of air flow is increased, the low-temperature and low-humidity air has been diffused when flowing to the material, and can flow to the material in a large area.

[0058] In one embodiment of the utility model, the air outlet 25 is close to the outer side of air inlet pipe 24. As shown in Figure 2 It can be seen that, since the outer side of the two air inlet pipes 24 is close to the inner side wall of air drying fermentation chamber, when the air outlet 25 is arranged close to the outer side of air inlet pipe 24, the air flowing out of the air outlet 25 can be guided by the inner side wall of air drying fermentation chamber, so that the low-temperature and low-humidity air flows along the inner side wall of air drying fermentation chamber to the guide plate, and then flows to the material through the guide of the guide plate.

[0059] In one embodiment of the utility model, the distance between adjacent air outlets 25 is equal. Since the cross section of air inlet pipe 24 decreases at a constant ratio with the increase of length, the distance between adjacent air outlets 25 needs to be kept equal, so that the air output of each air outlet 25 can be kept relatively uniform.

[0060] In one embodiment of the utility model, the cross-sectional shape of the air outlet 25 is one of rectangular or circular, and the cross-section of the air outlet 25 gradually decreases from top to bottom. When the total air volume entering the air inlet pipe 24 remains unchanged within a period of time, the air volume of each air outlet 25 also remains unchanged. In the case of constant air volume, the air speed gradually increases with the gradual decrease of the cross-section of the air outlet 25, thereby increasing the air pressure, so that the low-temperature and low-humidity air is transported further downward when flowing out of the air outlet 25.

[0061] In one embodiment of the utility model, the air inlets 241 of the two air inlet pipes 24 are in communication with the communication pipe 22, and the communication pipe 22 has a follow-up pipe 26 in the middle part thereof, and the air outlet of the fan 21 is in communication with the follow-up pipe 26. In actual use, the fan 21 works to blow low-temperature and low-humidity air into the follow-up pipe 26, which is then divided by the communication pipe 22 and flows into the two air inlet pipes 24, and then flows out of the air outlet 25 to dry the materials in the air-drying fermentation chamber. It should be noted that the follow-up pipe 26 needs to be in communication with the middle position of the communication pipe 22, and in the natural state, the error of the air volume entering the two air inlet pipes 24 is reduced.

[0062] In one embodiment of the utility model, the follow-up pipe 26 has a certain elasticity. In actual installation, the fan 21 is fixedly installed, so when the fan 21 works, it will vibrate, and at this time, the follow-up pipe 26 can deform, such as stretching and contracting, to reduce the vibration of the fan 21.

[0063] In one embodiment of the utility model, the air inlets 241 of the air inlet pipes 24 and the communication pipe 22 are both provided with electric air valves 23, and the electric air valves 23 are used to control the communication state between the air inlet pipes 24 and the communication pipe 22. Specifically, the air of the two air inlet pipes 24 comes from the same fan 21, and the air volume of the two air inlet pipes 24 is adjusted by adjusting the opening degree of the electric air valve 23, and the opening degree of the electric air valve 23 can be continuously adjusted in the full opening-full closing range, so as to realize the adjustment of the air volume of the air outlets 25 of the two air inlet pipes 24, and the electric air valve 23 can be opened at the same time, and at this time, the air volume of the two sides is consistent. The electric air valve 23 can also be completely opened on one side and completely closed on the other side. Then the completely opened gradually closes, and the completely closed gradually opens, to realize the left-right alternating air supply.

[0064] In one embodiment of the utility model, electrically operated air valve 23 includes casing 231, the inside rotationally connected with multiple valves 232 of casing 231, the connecting shaft of valve 232 lower end is fixedly connected with gear 233 and extends to the outside through casing 231, one rack 234 is meshed with multiple gear 233 on one side, the connecting shaft of one valve 232 upper end is fixedly connected with the output end of motor 235 and extends to the outside through casing 231, and motor 235 is fixedly connected with casing 231.When one of the valve 232 is driven to rotate by motor 235, the gear 233 at the lower end of the valve 232 will be driven to rotate, and the rack 234 will be driven to move along its length direction, so that the rotation of the other multiple gears 233 can be driven, and the synchronous rotation of the multiple valves 232 is realized, when the multiple valves 232 are stacked end to end, it is closed state at this time, when the multiple valves are parallel to each other, it is the maximum opening and closing state at this time.

[0065] In one embodiment of the utility model, the rack 234 is provided with a sliding groove 236 along its length direction, and two positioning pins 237 are slidingly connected in the sliding groove 236, and the positioning pins 237 are fixedly connected with the casing 231.When one of the valve 232 is driven to rotate by motor 235, the gear 233 at the lower end of the valve 232 will be driven to rotate, and the rack 234 will be driven to move along its length direction, so that the rotation of the other multiple gears 233 can be driven, and the synchronous rotation of the multiple valves 232 is realized, and the opening effect is realized.

[0066] In one embodiment of the utility model, the positioning pin 237 is fixedly connected with the baffle 238 having a diameter greater than the width of the sliding groove 236 at the end away from the casing 231. The setting of the baffle 238 can avoid the positioning pin 237 from disengaging from the sliding groove 236, and further ensure the engagement of the rack 234 and the gear 233.

[0067] The equipment includes a dried meat air-drying production outlet assembly.

[0068] Simulation and results:

[0069] Because the air inlet pipe 24 is relatively long, the air speed of the air outlet 25 directly affects the air speed of the drying area, and the sizes of the air outlets 25 are the same, and research shows that the uniformity of air speed distribution is mainly related to the taper of the air inlet pipe 24. In the following, the flow field of the air inlet pipe 24 in the application is simulated and analyzed by using the fluent software, and the influence of the taper of the air inlet pipe on the speed of the air outlet 25 is studied by changing the taper of the air inlet pipe 24:

[0070] Table 1 parameters of various structures

[0071]

[0072] The parameters of each structure were set as shown in Table 1, the length of the air inlet pipe was a constant value, and the taper expression was defined as:

[0073]

[0074] In the formula: C is the taper of the air inlet pipe; W is the width of the starting end of the air inlet pipe, in mm; L is the width of the tail, in mm. In the model, the width of the starting end of the air inlet pipe was fixed at 700 mm, and the width of the tail directly affected the size of the taper. The smaller the width value, the greater the taper.

[0075] Under the condition that the air inlet velocity was 14 m / s, the size of the flow field velocity in the air inlet pipe was as shown in Table 1. Figure 8 As can be seen from the figure, as the airflow flows out of each air outlet, its velocity gradually decreases in the Y direction in the air inlet pipe until it is 0 at the end, and the change is relatively smooth. The airflow velocity at the air outlet changes rapidly, and the closer to the starting end, the more dramatic the change. This is because the flow direction in the pipe is not consistent with the direction of the air outlet, and the airflow deviates to the side of the air outlet under the action of inertia when flowing out. Therefore, the airflow velocity at the starting end is faster than that at the end, and the deviation at the starting end is more obvious than that at the end.

[0076] Based on the airflow velocity distribution characteristics of the air outlet, the ratio of the flow rate to the area of a single air outlet was used to represent the wind speed at the outlet of each air outlet, and the uniformity of the air outlet wind speed could represent the uniformity of the flow field along the Y direction in the fermentation room. A total of 43 air outlets were selected, 15 of which were selected at equal intervals as research objects, and different inlet velocities were selected for simulation according to the actual situation. The velocity of each air outlet and the velocity non-uniformity coefficient of the air inlet pipe under different tapers were obtained.

[0077] Figure 9 is the velocity value of each air outlet when the inlet condition is 14 m / s. As can be seen from the figure, the taper of the air inlet pipe has a greater impact on the velocity of the air outlets at both ends, and a smaller impact on the velocity in the middle region. When C=7:2, the maximum velocity and the minimum velocity are 16.81 m / s and 12.89 m / s, respectively, with a difference of 3.92 m / s. When C=7:7, the maximum velocity and the minimum velocity are 15.54 m / s and 14.81 m / s, respectively, with a difference of 0.73 m / s. With the increase of the taper, the velocity of the air outlet changes from a downward trend to an upward trend from the head to the tail. This is because with the increase of the taper, the cross-sectional area of the air inlet pipe gradually decreases, resulting in an increase in airflow velocity. Under the blockage of the tail end surface, a large dynamic pressure is formed, which ultimately increases the airflow velocity of the air outlet.

[0078] Table 2 Velocity distribution of air supply outlets under different tapers with a wind speed of 5 m / s

[0079]

[0080] Table 3 Air outlet velocity distribution under different cone angles when the wind speed is 10 m / s

[0081]

[0082] Table 4 Air outlet velocity distribution under different cone angles when the wind speed is 15 m / s

[0083]

[0084] Table 5 Air outlet velocity distribution under different cone angles when the wind speed is 20 m / s

[0085]

[0086] Table 6 Velocity non-uniformity coefficient under different wind speeds and cone angles

[0087]

[0088] Tables 2 to 6 show that under the four conditions that the wind speed of the single-side inlet of the air inlet pipe is 5 m / s, 10 m / s, 15 m / s and 20 m / s, the change trend of the air outlet velocity non-uniformity coefficient is consistent, which is first decreased and then increased, and the minimum values are 0.0300, 0.0315, 0.0325 and 0.0332 respectively, which are basically the same, and the corresponding air inlet pipe cone angles are 7:6, 7:5, 7:5 and 7:5. It can be seen that different inlet conditions have little effect on the value of the optimal cone angle, which only occurs when the inlet wind speed is low, because the wind speed is low, the flow kinetic energy is small, and the uncertainty of flow is increased in the air inlet pipe of 11 m long. However, the inlet wind speed during the operation of the fermentation room is basically higher than 10 m / s, so the influence of the extreme conditions can be ignored, and it is concluded that when the tail width is 500 mm, the air inlet pipe has the optimal cone angle of 7:5, and the air outlet uniformity is the best.

[0089] In summary: the air inlet pipe cone angle mainly affects the air volume of the air outlets at both ends, and with the increase of the tail width, the air volume of the air outlet at the initial end gradually increases and that at the end gradually decreases. When the tail width is 500 mm, the air outlet velocity non-uniformity coefficient reaches the minimum value, and the air inlet pipe air supply uniformity is the best. The comparison of different inlet conditions shows that the change of the air inlet pipe air supply volume does not change the above conclusion.

[0090] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0091] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A device for producing an air outlet component for air-drying cured meat, comprising an air inlet pipe (24), characterized in that: The cross section of the air inlet pipe (24) gradually decreases along the length direction; One end of the air inlet pipe (24) with a wide cross section is an air inlet (241), and the air inlet (241) is used to let in low-temperature and low-humidity air; One end of the narrow cross-section of the air inlet pipe (24) is closed; At least two air outlets (25) are provided on the air inlet pipe (24) along the length direction of the air inlet pipe (24).

2. The air outlet assembly for air-drying cured meat according to claim 1, characterized in that: There are two air inlet pipes (24), and the two air inlet pipes (24) are arranged side by side on both sides of the top of the air-drying and fermentation chamber.

3. The air outlet assembly for air-drying cured meat according to claim 2, characterized in that: The outer side surface of the air inlet pipe (24) is parallel to the inner side wall of the air drying and fermentation chamber; The inner side surface of the air inlet pipe (24) is inclined; The cross section of the air inlet pipe (24) is gradually reduced along the length direction.

4. The air outlet assembly for air-drying cured meat according to claim 3, characterized in that: The lines along at least two of the air outlets (25) are parallel to the edge ridges of the outer side surface of the air inlet pipe (24).

5. The air outlet assembly for air-drying cured meat according to claim 4, characterized in that: The air outlet (25) is close to the outer side surface of the air inlet pipe (24).

6. The air outlet assembly for air-drying cured meat according to claim 5, characterized in that: The distances between adjacent air outlets (25) are equal.

7. The air outlet assembly for air-drying cured meat according to claim 6, characterized in that: The air outlet (25) of the air inlet pipe (24) faces vertically downward, the cross-sectional shape of the air outlet (25) is rectangular or circular, and the cross-sectional shape of the air outlet (25) gradually decreases from top to bottom.

8. The air outlet assembly for air-drying cured meat according to claim 1, characterized in that: The air inlets (241) of the two air inlet pipes (24) are connected to the connecting pipe (22), the middle of the connecting pipe (22) is connected to a follower pipe (26), and the air outlet of the fan (21) is connected to the follower pipe (26).

9. The air outlet assembly for air-drying cured meat according to claim 8, characterized in that: An electric air valve (23) is installed between the air inlet (241) of the air inlet pipe (24) and the connecting pipe (22). The electric air valve (23) is used to control the connection state between the air inlet pipe (24) and the connecting pipe (22).

10. Equipment for making air-dried cured meats, characterized in that: The equipment includes the air-drying component for cured meats as described in any one of claims 1 to 9.

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