Heat exchange type dairy product cooling device

Abstract

The invention relates to the technical field of dairy product cooling, and specifically discloses a heat exchange type dairy product cooling device, which comprises a heat exchange device and a constant temperature water tank, wherein the constant temperature water tank is used to provide a constant temperature cooling liquid to the heat exchange device, and the cooling liquid performs contact heat exchange with raw milk contained in the heat exchange device, the heat exchange device comprises a cooling box and a vertical cooling pipe, the cooling pipe comprises a downstream cooling pipe and a countercurrent cooling pipe, the constant temperature water tank is connected to the downstream cooling pipe, and the cooling liquid provided to the downstream cooling pipe flows upward, the constant temperature water tank is connected to the countercurrent cooling pipe, and the cooling liquid provided to the countercurrent cooling pipe flows downward, the cooling efficiency of the downstream cooling pipe gradually decreases from bottom to top, and the cooling efficiency of the countercurrent cooling pipe gradually decreases from top to bottom, the cooling efficiencies of the downstream cooling pipe and the countercurrent cooling pipe compensate each other, so that the raw milk in the cooling box can be evenly cooled from top to bottom, and the phenomenon of uneven cooling of the raw milk is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of dairy product production, and in particular to a heat exchange type dairy product cooling device. Background Art

[0002] In the yogurt preparation process, cooling is a key step after sterilization. The raw milk after high-temperature sterilization needs to be cooled to the temperature required for fermentation. After searching, the applicant found a Chinese utility model patent "A dairy product cooling device", whose authorization announcement number is CN212087895U, see the attached figure of the specification Figure 1 , which circulates coolant through a constant temperature water tank to a cooling box containing raw milk, and the coolant continuously flows from bottom to top in a vertically arranged cooling pipe, and at the same time, the stirring blade stirs the raw milk, so that the raw milk can fully contact and exchange heat with the cooling pipe. Although it can improve the efficiency of heat exchange, it also has certain disadvantages. One is that the upward-flowing coolant continuously exchanges heat with the raw milk, causing the coolant in the cooling pipe to gradually increase in temperature from bottom to top, that is, the temperature difference between the raw milk at the bottom of the cooling box and the cooling pipe in contact with it is large, and the raw milk at the bottom of the cooling box is The cooling effect of the raw milk is relatively good, that is, the temperature difference between the raw milk located at the top of the cooling box and the cooling pipe in contact with it is small, and the cooling effect of the raw milk located at the top of the cooling box is relatively poor, that is, the cooling of the raw milk is uneven; secondly, the stirring range of the stirring blades is limited, and it is difficult to effectively stir the raw milk at the inner wall of the cooling box, resulting in a cooling dead corner for the raw milk close to the inner wall of the cooling box, which further leads to uneven cooling of the raw milk. Based on this, the applicant purposefully provides a heat exchange dairy product cooling device with an ingenious structure that can perform full and uniform cooling in all directions without dead corners. Summary of the invention

[0003] The purpose of the present invention is to provide a heat exchange type dairy product cooling device with an ingenious structure and capable of fully and evenly cooling in all directions without dead angles, aiming to solve the technical problems of uneven cooling of raw milk and the existence of dead angles in the prior art.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A heat exchange type dairy product cooling device, which includes a heat exchange device and a constant temperature water tank, the constant temperature water tank is used to provide constant temperature cooling liquid to the heat exchange device, and the cooling liquid performs contact heat exchange with raw milk contained in the heat exchange device, the heat exchange device includes a cooling box and a vertical cooling pipe, the cooling pipe includes a downstream cooling pipe and a countercurrent cooling pipe, the constant temperature water tank is connected to the downstream cooling pipe and the cooling liquid provided to the downstream cooling pipe flows upward, the constant temperature water tank is connected to the countercurrent cooling pipe and the cooling liquid provided to the countercurrent cooling pipe flows downward.

[0006] As a further solution of the present invention: the cooling box is cylindrical in shape surrounded by an inner structure and an outer structure, an annular cooling chamber is formed between the inner structure and the outer structure, the downstream cooling pipe and the countercurrent cooling pipe are located in the cooling chamber and a plurality of them are arranged in an array at equal intervals along the circumferential direction of the cooling chamber, the downstream cooling pipe and the countercurrent cooling pipe are arranged alternately, and the downstream cooling pipe and the countercurrent cooling pipe separate the cooling chamber into multiple cooling water areas.

[0007] As a further solution of the present invention: the bottom of the cooling pipe is rotatably connected to the bottom of the cooling chamber, the top of the cooling box is provided with a driving mechanism and the driving mechanism is used to drive the cooling pipe to rotate around its own axis, and the outer circular surface of the cooling pipe is provided with a paddle extending radially outward, and there are multiple paddles and arranged in an array with equal spacing along the circumferential direction of the cooling pipe. When the paddles rotate with the cooling pipe, they can contact the inner layer structure and the outer layer structure of the cooling box.

[0008] As a further solution of the present invention: the driving mechanism includes a motor fixedly arranged inside the inner layer structure, a driving gear is fixedly sleeved on the output shaft of the motor, a driven gear is coaxially fixedly sleeved on the upper end of the cooling tube, the driving gear and the driven gear are meshed with each other, a circular support plate is coaxially fixedly arranged on the top of the inner layer structure, and the motor is fixedly installed on the lower end surface of the support plate.

[0009] As a further solution of the present invention: a pipe assembly connecting the cooling pipe and the constant temperature water tank is arranged between the two, and the pipe assembly includes a first liquid inlet pipe, a first liquid outlet pipe, a second liquid inlet pipe and a second liquid outlet pipe. The first liquid inlet pipe, the first liquid outlet pipe, the second liquid inlet pipe and the second liquid outlet pipe are all multi-way pipes. The first liquid inlet pipe is connected between the constant temperature water tank and the lower end of the downstream cooling pipe, the first liquid outlet pipe is connected between the constant temperature water tank and the upper end of the downstream cooling pipe, the second liquid inlet pipe is connected between the constant temperature water tank and the upper end of the countercurrent cooling pipe, and the second liquid outlet pipe is connected between the constant temperature water tank and the lower end of the countercurrent cooling pipe.

[0010] As a further solution of the present invention: the first liquid inlet pipe is connected to the downstream cooling pipe through a rotating joint, the first liquid outlet pipe is connected to the downstream cooling pipe through a rotating joint, the second liquid inlet pipe is connected to the countercurrent cooling pipe through a rotating joint, and the second liquid outlet pipe is connected to the countercurrent cooling pipe through a rotating joint.

[0011] As a further solution of the present invention: a water pump is provided at the connection point between the first liquid inlet pipe and the constant temperature water tank and at the connection point between the second liquid inlet pipe and the constant temperature water tank, and the coolant can be pumped out by the water pump and transported into the first liquid inlet pipe and the second liquid inlet pipe.

[0012] As a further solution of the present invention: a fan-shaped opening is provided on the end face of the driving gear, a plurality of fan-shaped openings are arranged in an array with equal spacing, oblique blades are formed between adjacent fan-shaped openings, and a plurality of ventilation holes are provided on the support plate.

[0013] As a further solution of the present invention: vertical heat sinks are arranged on the inner circular surface of the inner layer structure, and a plurality of heat sinks are arranged in an array with equal spacing along the circumferential direction of the inner layer structure.

[0014] As a further solution of the present invention: an annular end cover is provided at the opening of the cooling chamber, and the driving gear and the driven gear are both located above the end cover.

[0015] Beneficial effects of the present invention:

[0016] 1. The cooling efficiency of the downstream cooling pipe gradually decreases from bottom to top, and the cooling efficiency of the countercurrent cooling pipe gradually decreases from top to bottom. The cooling efficiencies of the downstream cooling pipe and the countercurrent cooling pipe compensate each other, so that the raw milk in the cooling box can be cooled evenly from top to bottom, effectively avoiding the phenomenon of uneven cooling of the raw milk from top to bottom;

[0017] 2. Each cooling water area contains a downstream cooling pipe and a countercurrent cooling pipe, which can achieve uniform cooling of raw milk in a small area;

[0018] 3. By driving the cooling pipe to rotate, the paddle rotates synchronously with the cooling pipe, which can make the raw milk flow and exchange between adjacent water areas, further improving the uniformity of raw milk cooling. At the same time, the contact area between the flowing raw milk and the cooling pipe is larger, and the heat exchange efficiency is higher;

[0019] 4. The rotation of the active gear drives the blades to rotate, thereby forming a downward airflow in the inner structure. The constructed air-cooling structure can further improve the cooling efficiency of the raw milk. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram in the prior art;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the cooling box;

[0024] Figure 4 It is a schematic diagram of the internal structure of the cooling box;

[0025] Figure 5 It is a schematic diagram of the connection between the cooling pipe and the constant temperature water tank;

[0026] Figure 6 It is a schematic diagram of the structure of the cooling pipe;

[0027] Figure 7 It is the cooperation between cooling pipe and cooling chamber Figure 1 ;

[0028] Figure 8 It is the cooperation between cooling pipe and cooling chamber Figure 2 ;

[0029] Fig. 9 It is the coordination diagram of the driving mechanism and the cooling pipe;

[0030] Fig.10 It is a structural diagram of the driving gear;

[0031] Fig.11 is a cross-sectional view of the cooling box.

[0032] The figure shows:

[0033] 100. heat exchange device; 110. cooling box; 111. end cover; 112. downstream cooling pipe; 113. countercurrent cooling pipe; 114. cooling chamber; 115. paddle; 116. support plate; 117. vent; 118. heat sink; 120. pipe assembly; 121. first liquid inlet pipe; 122. first liquid outlet pipe; 123. second liquid inlet pipe; 124. second liquid outlet pipe; 130. driving mechanism; 131. motor; 132. driving gear; 133. driven gear; 134. fan-shaped opening; 135. blades; 200. constant temperature water tank. DETAILED DESCRIPTION

[0034] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0035] See also Figure 2-11As shown, the present invention is a heat exchange type dairy product cooling device, which includes a heat exchange device 100 and a constant temperature water tank 200. The constant temperature water tank 200 is used to provide a constant temperature cooling liquid to the heat exchange device 100, and the cooling liquid performs contact heat exchange with the raw milk contained in the heat exchange device 100. The heat exchange device 100 includes a cooling box 110 and a vertical cooling pipe. The cooling pipe includes a downstream cooling pipe 112 and a countercurrent cooling pipe 113. The constant temperature water tank 200 is connected to the downstream cooling pipe 112 and the cooling liquid provided by the downstream cooling pipe 112 flows upward. The constant temperature water tank 200 is connected to the countercurrent cooling pipe 113 and the cooling liquid provided by the countercurrent cooling pipe 113 flows downward. The constant temperature water tank 200 can automatically dissipate heat and maintain the cooling liquid at a preset temperature value, that is, the temperature of the cooling liquid output by the constant temperature water tank 200 is always maintained at a preset temperature value. The constant temperature water tank 200 can be implemented by the prior art and will not be described in detail.

[0036] The working principle is as follows: the sterilized raw milk is introduced into the cooling box 110, and the raw milk is in direct contact with the downstream cooling pipe 112 and the countercurrent cooling pipe 113. At this time, the constant temperature water tank 200 transports cooling liquid to the downstream cooling pipe 112, and the cooling liquid flows upward in the downstream cooling pipe 112, and the cooling liquid forms a closed circulation loop between the constant temperature water tank 200 and the downstream cooling pipe 112. The constant temperature water tank 200 transports cooling liquid to the countercurrent cooling pipe 113, and the cooling liquid flows downward in the countercurrent cooling pipe 113, and the cooling liquid forms a closed circulation loop between the constant temperature water tank 200 and the countercurrent cooling pipe 113. The cooling efficiency of the downstream cooling pipe 112 gradually decreases from bottom to top, and the cooling efficiency of the countercurrent cooling pipe 113 gradually decreases from top to bottom. The cooling efficiencies of the downstream cooling pipe 112 and the countercurrent cooling pipe 113 compensate each other, so that the raw milk in the cooling box 110 can be evenly cooled up and down, effectively avoiding the phenomenon of uneven cooling of the raw milk up and down.

[0037] For details, see Figure 4 The cooling box 110 is cylindrical in shape and is surrounded by an inner structure and an outer structure. An annular cooling chamber 114 is formed between the inner structure and the outer structure. The downstream cooling pipe 112 and the countercurrent cooling pipe 113 are located in the cooling chamber 114 and are arranged in a plurality of arrays at equal intervals along the circumferential direction of the cooling chamber 114. The downstream cooling pipe 112 and the countercurrent cooling pipe 113 are alternately arranged. The downstream cooling pipe 112 and the countercurrent cooling pipe 113 separate the cooling chamber 114 into a plurality of cooling water areas. The significance of adopting this technical solution is that each cooling water area includes a downstream cooling pipe 112 and a countercurrent cooling pipe 113, which can achieve uniform cooling of the raw milk up and down in a small range.

[0038] For more details, see Figure 7The bottom of the cooling pipe is rotatably connected with the bottom of the cooling chamber 114. A driving mechanism 130 is provided on the top of the cooling box 110 and the driving mechanism 130 is used to drive the cooling pipe to rotate around its own axis. A paddle 115 is provided on the outer circumferential surface of the cooling pipe and is arranged along its radial outward extension. There are multiple paddles 115 and they are arranged in an array with equal spacing along the circumferential direction of the cooling pipe. When the paddle 115 rotates with the cooling pipe, it can contact the inner layer structure and the outer layer structure of the cooling box 110. The significance of adopting this technical solution is that by driving the cooling pipe to rotate, the paddle 115 rotates synchronously with the cooling pipe, which can enable the raw milk to flow and exchange between adjacent waters, further improving the uniformity of raw milk cooling. At the same time, the contact area between the flowing raw milk and the cooling pipe is larger, and the heat exchange efficiency is higher.

[0039] See also Figure 9-11 The driving mechanism 130 includes a motor 131 fixedly arranged inside the inner layer structure, a driving gear 132 is fixedly sleeved on the output shaft of the motor 131, a driven gear 133 is coaxially fixedly sleeved on the upper end of the cooling tube, the driving gear 132 and the driven gear 133 are meshed with each other, and the motor 131 can drive the paddle 115 to rotate, thereby realizing the paddle flow exchange of the raw milk between adjacent cooling water areas.

[0040] For details, see Fig.11 A circular support plate 116 is coaxially fixedly arranged on the top of the inner layer structure, and the motor 131 is fixedly mounted on the lower end surface of the support plate 116 .

[0041] More specifically, a fan-shaped opening 134 is provided on the end face of the driving gear 132, and a plurality of fan-shaped openings 134 are arranged in an array with equal spacing, and oblique blades 135 are formed between adjacent fan-shaped openings 134. A plurality of ventilation holes 117 are provided on the support plate 116. The significance of adopting this scheme is that the rotation of the driving gear 132 drives the blades 135 to rotate, thereby forming a downward airflow in the inner structure, and the constructed air-cooling structure can further improve the cooling efficiency of the raw milk.

[0042] More specifically, vertical heat sinks 118 are provided on the inner circular surface of the inner layer structure. There are multiple heat sinks 118 and they are arranged in an array with equal spacing along the circumferential direction of the inner layer structure. The setting of the heat sinks 118 can improve the efficiency of air cooling.

[0043] More specifically, an annular end cover 111 is provided at the opening of the cooling chamber 114, and the driving gear 132 and the driven gear 133 are both located above the end cover 111. The transmission structure can be isolated by the end cover 111 to avoid contamination of the raw milk.

[0044] See also Figure 5 A pipe assembly 120 connecting the cooling pipe and the constant temperature water tank 200 is arranged between the two. The pipe assembly 120 includes a first liquid inlet pipe 121, a first liquid outlet pipe 122, a second liquid inlet pipe 123 and a second liquid outlet pipe 124. The first liquid inlet pipe 121, the first liquid outlet pipe 122, the second liquid inlet pipe 123 and the second liquid outlet pipe 124 are all multi-way pipes. The first liquid inlet pipe 121 is connected between the constant temperature water tank 200 and the lower end of the downstream cooling pipe 112, the first liquid outlet pipe 122 is connected between the constant temperature water tank 200 and the upper end of the downstream cooling pipe 112, the second liquid inlet pipe 123 is connected between the constant temperature water tank 200 and the upper end of the countercurrent cooling pipe 113, and the second liquid outlet pipe 124 is connected between the constant temperature water tank 200 and the lower end of the countercurrent cooling pipe 113.

[0045] Specifically, the first liquid inlet pipe 121 is connected to the downstream cooling pipe 112 through a rotating joint, the first liquid outlet pipe 122 is connected to the downstream cooling pipe 112 through a rotating joint, the second liquid inlet pipe 123 is connected to the countercurrent cooling pipe 113 through a rotating joint, and the second liquid outlet pipe 124 is connected to the countercurrent cooling pipe 113 through a rotating joint.

[0046] More specifically, water pumps are provided at the connection points between the first liquid inlet pipe 121 and the constant temperature water tank 200 and at the connection points between the second liquid inlet pipe 123 and the constant temperature water tank 200. The coolant can be pumped out by the water pump and transported into the first liquid inlet pipe 121 and the second liquid inlet pipe 123.

[0047] During use, the constant temperature water tank 200 provides cooling liquid to the downstream cooling pipe 112 and the countercurrent cooling pipe 113 through the pipe assembly 120. The cooling liquid flows upward in the downstream cooling pipe 112, and the cooling liquid flows downward in the countercurrent cooling pipe 113. The cooling efficiency of the downstream cooling pipe 112 gradually decreases from bottom to top, and the cooling efficiency of the countercurrent cooling pipe 113 gradually decreases from top to bottom. The cooling efficiencies of the downstream cooling pipe 112 and the countercurrent cooling pipe 113 compensate each other, so that the raw milk in the cooling box 110 can be cooled evenly from top to bottom. At the same time, the driving mechanism 130 drives the cooling pipe to rotate, and the paddle 115 paddles the raw milk and makes the raw milk flow and exchange between adjacent cooling waters. During this process, the blades 135 rotate and form an air-cooled structure that runs through the inner layer structure from top to bottom, which can improve the cooling efficiency of the raw milk. Improving the cooling uniformity and cooling efficiency of the raw milk is the core creative point of this application.

[0048] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A heat exchange type dairy product cooling device, comprising a heat exchange device (100) and a constant temperature water tank (200), the constant temperature water tank (200) being used to provide a constant temperature cooling liquid to the heat exchange device (100) and the cooling liquid performs contact heat exchange with raw milk contained in the heat exchange device (100), the heat exchange device (100) comprising a cooling box (110) and a vertical cooling pipe, characterized in that: The cooling pipe comprises a downstream cooling pipe (112) and a countercurrent cooling pipe (113); the constant temperature water tank (200) is connected to the downstream cooling pipe (112) and the cooling liquid provided to the downstream cooling pipe (112) flows upward; the constant temperature water tank (200) is connected to the countercurrent cooling pipe (113) and the cooling liquid provided to the countercurrent cooling pipe (113) flows downward; The cooling box (110) is cylindrical in shape and is surrounded by an inner structure and an outer structure. An annular cooling chamber (114) is formed between the inner structure and the outer structure. The downstream cooling pipe (112) and the countercurrent cooling pipe (113) are located in the cooling chamber (114) and are arranged in an array at equal intervals along the circumferential direction of the cooling chamber (114). The downstream cooling pipe (112) and the countercurrent cooling pipe (113) are arranged alternately. The downstream cooling pipe (112) and the countercurrent cooling pipe (113) separate the cooling chamber (114) into a plurality of cooling water areas. The bottom of the cooling pipe is rotatably connected to the bottom of the cooling chamber (114); a driving mechanism (130) is provided on the top of the cooling box (110) and the driving mechanism (130) is used to drive the cooling pipe to rotate around its own axis; a paddle (115) is provided on the outer circumferential surface of the cooling pipe and is arranged to extend radially outward; a plurality of paddles (115) are provided and are arranged in an array at equal intervals along the circumferential direction of the cooling pipe; when the paddles (115) rotate with the cooling pipe, they can contact the inner layer structure and the outer layer structure of the cooling box (110); The driving mechanism (130) comprises a motor (131) fixedly arranged inside the inner layer structure, a driving gear (132) is fixedly sleeved on the output shaft of the motor (131), a driven gear (133) is coaxially fixedly sleeved on the upper end of the cooling tube, the driving gear (132) and the driven gear (133) are meshed with each other, a circular support plate (116) is coaxially fixedly arranged on the top of the inner layer structure, and the motor (131) is fixedly mounted on the lower end surface of the support plate (116); The end surface of the driving gear (132) is provided with a fan-shaped opening (134), a plurality of fan-shaped openings (134) are arranged in an array at equal intervals, and oblique blades (135) are formed between adjacent fan-shaped openings (134), and the support plate (116) is provided with a plurality of ventilation holes (117); Vertical heat sinks (118) are provided on the inner circular surface of the inner layer structure, and a plurality of heat sinks (118) are provided and arranged in an array at equal intervals along the circumferential direction of the inner layer structure.

2. A heat exchange type dairy product cooling device according to claim 1, characterized in that: A pipe assembly (120) is provided between the cooling pipe and the constant temperature water tank (200) to connect the two. The pipe assembly (120) comprises a first liquid inlet pipe (121), a first liquid outlet pipe (122), a second liquid inlet pipe (123) and a second liquid outlet pipe (124). The first liquid inlet pipe (121), the first liquid outlet pipe (122), the second liquid inlet pipe (123) and the second liquid outlet pipe (124) are all multi-way pipes. The first liquid outlet pipe (121) is connected between the constant temperature water tank (200) and the lower end of the downstream cooling pipe (112), the first liquid outlet pipe (122) is connected between the constant temperature water tank (200) and the upper end of the downstream cooling pipe (112), the second liquid inlet pipe (123) is connected between the constant temperature water tank (200) and the upper end of the countercurrent cooling pipe (113), and the second liquid outlet pipe (124) is connected between the constant temperature water tank (200) and the lower end of the countercurrent cooling pipe (113).

3. A heat exchange type dairy product cooling device according to claim 2, characterized in that: The first liquid inlet pipe (121) is connected to the downstream cooling pipe (112) via a rotating joint, the first liquid outlet pipe (122) is connected to the downstream cooling pipe (112) via a rotating joint, the second liquid inlet pipe (123) is connected to the countercurrent cooling pipe (113) via a rotating joint, and the second liquid outlet pipe (124) is connected to the countercurrent cooling pipe (113) via a rotating joint.

4. A heat exchange type dairy product cooling device according to claim 3, characterized in that: A water pump is provided at the connection point between the first liquid inlet pipe (121) and the constant temperature water tank (200) and at the connection point between the second liquid inlet pipe (123) and the constant temperature water tank (200), and the coolant can be pumped out by the water pump and then transported into the first liquid inlet pipe (121) and the second liquid inlet pipe (123) for transportation.

5. A heat exchange type dairy product cooling device according to claim 1, characterized in that: An annular end cover (111) is provided at the opening of the cooling chamber (114), and the driving gear (132) and the driven gear (133) are both located above the end cover (111).

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