Dairy product canning pressure difference control type air purification system

Abstract

The utility model relates to a dairy product canning pressure difference control type air purification system, which belongs to the field of dairy product production and comprises a superior air purification unit and a subordinate air purification unit. The upper-stage air purification unit comprises a fresh air primary efficiency filtering section, an upper-stage mixed flow section fixedly connected to the left side of the fresh air primary efficiency filtering section, an upper-stage primary and medium efficiency filtering section fixedly connected to the left side of the upper-stage mixed flow section, an upper-stage surface cooling section fixedly connected to the left side of the upper-stage primary and medium efficiency filtering section, and a first fan fixedly connected to the left side of the upper-stage surface cooling section; the upper-stage efficient filtering section is fixedly connected to the air outlet end of the first fan; and the upper-stage air outlet section is fixedly connected to the left side of the upper-stage efficient filtering section. According to the pressure difference control type air purification system for the dairy product canning room, the air pressure difference between the canning room and the outdoor can be monitored in real time, the operation frequency of the draught fan is flexibly adjusted according to actual requirements, and therefore energy waste caused by the fixed air supply amount in the system is avoided.

Description

Technical Field

[0001] This utility model relates to an air purification system for differential pressure control in dairy product bottling rooms, and belongs to the field of dairy product production. Background Technology

[0002] In the air purification and pressure control system of dairy product bottling rooms, in order to maintain a positive pressure environment and ensure air cleanliness, a large amount of outdoor fresh air is typically introduced, cooled, and dehumidified before being sent into the bottling room to replenish pressure. The core of this method lies in controlling the positive pressure level of the bottling room by precisely regulating the amount of fresh air.

[0003] However, this method has a significant drawback: the deep dehumidification process for outdoor fresh air consumes a large amount of energy, resulting in high overall energy consumption. In the dairy product bottling process, after filling, the product is conveyed from the filling room to the outer packaging room via a conveyor belt. Furthermore, during this process, the pressure at the conveyor belt windows is often highly unbalanced, causing clean, cool air from the filling room to continuously leak into the outer packaging room. Simultaneously, frequent entry and exit of personnel or materials also leads to significant air leakage at the filling room door, further exacerbating the pressure loss within the filling room. This continuous air leakage not only makes it difficult to maintain the pressure in the filling room, preventing the pressure between the filling room and the outer packaging room from balancing, but also directly results in a huge waste of fresh air energy. Because to compensate for this pressure loss and maintain a positive pressure environment in the filling room, the system must continuously introduce more outdoor fresh air and perform deep dehumidification, thus creating a vicious cycle. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides an air purification system for differential pressure control in dairy product canning rooms, which has the advantages of significantly reducing energy consumption.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goal of significantly reducing energy consumption, this utility model provides the following technical solution: a differential pressure control air purification system for dairy product canning rooms, comprising an upper-level air purification unit and a lower-level air purification unit;

[0008] The upper-level air purification unit includes a fresh air primary filter section, an upper-level mixing section fixedly connected to the left side of the fresh air primary filter section, an upper-level primary and secondary filter section fixedly connected to the left side of the upper-level mixing section, an upper-level surface cooling section fixedly connected to the left side of the upper-level primary and secondary filter sections, a No. 1 fan fixedly connected to the left side of the upper-level surface cooling section, an upper-level high-efficiency filter section fixedly connected to the air outlet of the No. 1 fan, and an upper-level air outlet section fixedly connected to the left side of the upper-level high-efficiency filter section.

[0009] The lower-level air purification unit includes a lower-level mixing section, a lower-level primary and secondary filter section fixedly connected to the left side of the lower-level mixing section, a lower-level surface cooling section fixedly connected to the left side of the lower-level primary and secondary filter section, a second fan fixedly connected to the left side of the lower-level surface cooling section, a lower-level high-efficiency filter section fixedly connected to the air outlet of the second fan, and a lower-level air outlet section fixedly connected to the left side of the lower-level high-efficiency filter section.

[0010] Furthermore, the second fan is a variable frequency fan, and the lower-level air purification unit is equipped with an air extraction section.

[0011] Furthermore, both the upper and lower air outlet sections are connected to the filling room, and the lower air purification unit is connected to the outer packaging room through an air extraction section.

[0012] Furthermore, the upper-level surface cooling section is composed of a finned tube heat exchanger and a chilled water valve, and the configuration of the lower-level surface cooling section is the same as that of the upper-level surface cooling section.

[0013] Furthermore, the upper-level surface cooling section is fixedly connected to the exhaust end of the No. 1 fan, and the lower-level surface cooling section is fixedly connected to the exhaust end of the No. 2 fan.

[0014] Furthermore, the upper mixing section is composed of a mixing fan and an air mixing chamber, and the configuration of the lower mixing section is the same as that of the upper mixing section.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a differential pressure control air purification system for dairy product bottling rooms, which has the following beneficial effects:

[0017] This differential pressure control air purification system for dairy product filling rooms can monitor the air pressure difference between the filling room and the outside in real time, and flexibly adjust the operating frequency of the fans according to actual needs. This avoids energy waste caused by fixed air supply volume in the system. By precisely controlling the pressure difference between the filling room and the packaging room, it effectively prevents the leakage of clean, low-temperature air in the filling room, ensuring the stability of the pressure in the filling room. This not only improves the air quality in the filling room, but also avoids the adverse effects on the production environment caused by pressure fluctuations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the system of this utility model.

[0020] In the diagram: 1. Upper-level air purification unit; 101. Fresh air pre-filter section; 102. Upper-level mixed flow section; 103. Upper-level pre- and medium-efficiency filter section; 104. Upper-level surface cooling section; 105. Fan No. 1; 106. Upper-level high-efficiency filter section; 107. Upper-level air outlet section; 2. Lower-level air purification unit; 201. Lower-level mixed flow section; 202. Lower-level pre- and medium-efficiency filter section; 203. Lower-level surface cooling section; 204. Fan No. 2; 205. Lower-level high-efficiency filter section; 206. Lower-level air outlet section; 207. Air extraction section. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 This utility model provides a technical solution: a differential pressure control air purification system for dairy product canning rooms, including an upper-level air purification unit 1 and a lower-level air purification unit 2.

[0023] The upper-level air purification unit 1 includes a fresh air pre-filter section 101, an upper-level mixing section 102 fixedly connected to the left side of the fresh air pre-filter section 101, an upper-level primary and secondary filter section 103 fixedly connected to the left side of the upper-level mixing section 102, an upper-level surface cooling section 104 fixedly connected to the left side of the upper-level primary and secondary filter section 103, a first fan 105 fixedly connected to the left side of the upper-level surface cooling section 104, an upper-level high-efficiency filter section 106 fixedly connected to the air outlet of the first fan 105, and an upper-level air outlet section 107 fixedly connected to the left side of the upper-level high-efficiency filter section 106.

[0024] The lower-level air purification unit 2 includes a lower-level mixing section 201, a lower-level primary and secondary filter section 202 fixedly connected to the left side of the lower-level mixing section 201, a lower-level surface cooling section 203 fixedly connected to the left side of the lower-level primary and secondary filter section 202, a second fan 204 fixedly connected to the left side of the lower-level surface cooling section 203, a lower-level high-efficiency filter section 205 fixedly connected to the air outlet of the second fan 204, and a lower-level air outlet section 206 fixedly connected to the left side of the lower-level high-efficiency filter section 205.

[0025] It should be noted that the No. 2 fan 204 is a variable frequency fan. A differential pressure sensor is installed in the filling room. The differential pressure sensor compares the air pressure difference between the filling room and the outside with the set value and transmits the signal to the frequency converter of the No. 2 fan 204 to control the frequency of the No. 2 fan 204 in real time, so as to ensure that the pressure difference is within the set range. It can adjust the pressure difference between the workshop and the outside in real time according to the pressure difference requirements, so as to ensure the cleanliness of the workshop and reduce the energy consumption of the fan. The lower-level air purification unit 2 is equipped with an air extraction section 207.

[0026] Both the upper air outlet section 107 and the lower air outlet section 206 are connected to the filling room, and the lower air purification unit 2 is connected to the outer packaging room through the air extraction section 207.

[0027] The upper cooling section 104 is composed of a finned tube heat exchanger and a chilled water valve, and the lower cooling section 203 has the same configuration as the upper cooling section 104.

[0028] The upper surface cooling section 104 is fixedly connected to the exhaust end of the first fan 105, and the lower surface cooling section 203 is fixedly connected to the exhaust end of the second fan 204.

[0029] The upper mixing section 102 is composed of a mixing fan and an air mixing chamber, and the lower mixing section 201 has the same configuration as the upper mixing section 102.

[0030] The working principle of the above embodiments is as follows:

[0031] When the filling room is not in production, fan 105 is turned on and fan 204 is turned off. Fresh air enters the upper-level air purification unit 1 through the primary fresh air filter section 101 to remove large particulate pollutants from the air. In the upper-level mixed flow section 102, the mixed flow fan mixes the fresh air with a certain amount of indoor return air to ensure the freshness and temperature of the air. Then, it enters the upper-level primary and secondary filter section 103 for secondary filtration. Next, the filtered air enters the upper-level surface cooling section 104 and uses a finned tube heat exchanger to reduce the air temperature, thereby achieving cooling and dehumidification. After cooling and dehumidification, the air enters the upper-level high-efficiency filter section 106 to gradually remove finer particles, ensuring that the air reaches an extremely high cleanliness standard. Finally, the cooled, dehumidified, and filtered air is delivered to the filling room through the upper-level air outlet section 107, thereby controlling the pressure difference between the filling room and the outside.

[0032] When the filling room is in production, the clean, low-temperature air in the filling room will leak into the outer packaging room through the openings of the product conveyor belt and the entrances and exits for personnel and materials. When the second fan 204 is started, the lower-level air purification unit 2 extracts the air from the outer packaging room through the air extraction section 207 and recovers some of the cold energy to avoid wasting fresh air energy. The air is then processed through the lower-level mixed flow section 201, the lower-level primary and medium-efficiency filter section 202, the lower-level surface cooling section 203, and the lower-level high-efficiency filter section 205. Finally, the air is delivered to the filling room through the lower-level air outlet section 206.

[0033] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0034] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A differential pressure control air purification system for dairy product bottling rooms, characterized in that, It includes an upper-level air purification unit (1) and a lower-level air purification unit (2); The upper-level air purification unit (1) includes a fresh air primary filter section (101), an upper-level mixing section (102) fixedly connected to the left side of the fresh air primary filter section (101), an upper-level primary and secondary filter section (103) fixedly connected to the left side of the upper-level mixing section (102), an upper-level surface cooling section (104) fixedly connected to the left side of the upper-level primary and secondary filter section (103), a first fan (105) fixedly connected to the left side of the upper-level surface cooling section (104), an upper-level high-efficiency filter section (106) fixedly connected to the air outlet of the first fan (105), and an upper-level air outlet section (107) fixedly connected to the left side of the upper-level high-efficiency filter section (106). The lower-level air purification unit (2) includes a lower-level mixing section (201), a lower-level primary and secondary filter section (202) fixedly connected to the left side of the lower-level mixing section (201), a lower-level surface cooling section (203) fixedly connected to the left side of the lower-level primary and secondary filter section (202), a second fan (204) fixedly connected to the left side of the lower-level surface cooling section (203), a lower-level high-efficiency filter section (205) fixedly connected to the air outlet of the second fan (204), and a lower-level air outlet section (206) fixedly connected to the left side of the lower-level high-efficiency filter section (205).

2. The differential pressure control air purification system for dairy product bottling rooms according to claim 1, characterized in that: The second fan (204) is a variable frequency fan, and the lower-level air purification unit (2) is equipped with an air extraction section (207).

3. The differential pressure control air purification system for dairy product bottling rooms according to claim 1, characterized in that: Both the upper air outlet section (107) and the lower air outlet section (206) are connected to the filling room, and the lower air purification unit (2) is connected to the outer packaging room through the air extraction section (207).

4. The differential pressure control air purification system for dairy product bottling rooms according to claim 1, characterized in that: The upper cooling section (104) is composed of a finned tube heat exchanger and a chilled water valve, and the configuration of the lower cooling section (203) is the same as that of the upper cooling section (104).

5. The differential pressure control air purification system for dairy product bottling rooms according to claim 1, characterized in that: The upper cooling section (104) is fixedly connected to the exhaust end of the first fan (105), and the lower cooling section (203) is fixedly connected to the exhaust end of the second fan (204).

6. The differential pressure control air purification system for dairy product bottling rooms according to claim 1, characterized in that: The upper mixing section (102) is composed of a mixing fan and an air mixing chamber, and the lower mixing section (201) is configured in the same way as the upper mixing section (102).

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