Vacuum low-temperature melting tank for low-acid-value animal fat

Abstract

The utility model discloses a kind of vacuum low-temperature melting tanks of low acid value animal oil and fat, belong to food processing technical field, including tank body, the top inner wall of the tank body is fixedly installed with refining box, the top of the refining box is installed with vacuum pump and feeding port, the both sides inner wall of the tank body is all installed with heating plate, the both sides of the tank body are respectively installed with liquid inlet pipe and liquid outlet pipe;Discharge mechanism, including collection cylinder, the collection cylinder sliding installation is in the bottom of tank body, the bottom of refining box is slidably connected with isolation cylinder, and collection cylinder and isolation cylinder are mutually matched.By the sliding cooperation of refining box and isolation cylinder, realize the integration of refining and discharge, when discharging, cylinder pushes collection cylinder to move down, drives isolation cylinder to move synchronously, utilize arc-shaped stop lever and the mechanical blocking of the bottom of refining box to trigger the automatic opening of discharge hole, without additional power, simplify operation process.

Description

Technical Field

[0001] This utility model belongs to the field of food processing technology, specifically, it relates to a vacuum low-temperature melting tank for low-acid-value animal fats. Background Technology

[0002] Animal fats have wide applications in the food, chemical, and bioenergy industries, but their refining process is prone to high-temperature oxidation or hydrolysis, leading to increased acid value and affecting product quality. Traditional fat smelting methods often employ atmospheric pressure and high-temperature heating, which is not only energy-intensive but also accelerates fat deterioration. Although vacuum cryogenic smelting technology can effectively lower the boiling point and reduce oxidation, existing equipment still has the following problems:

[0003] Traditional refining and discharging in smelting tanks are usually carried out in separate steps, requiring manual intervention or additional power to drive valves. This is cumbersome and can easily cause grease residue, affecting continuous production. High-viscosity grease tends to adhere to the inner wall of the refining tank. Traditional equipment often relies on manual cleaning after shutdown, which not only increases maintenance costs but may also lead to cross-contamination due to incomplete cleaning. Direct heating or a single heat source can easily cause local overheating, accelerating the hydrolysis and rancidity of grease. Existing indirect heating structures (such as coils) often have insufficient heat transfer efficiency, making it difficult to balance uniformity and temperature control accuracy.

[0004] To address the aforementioned issues, this application proposes a vacuum cryogenic melting tank for low-acid-value animal fats. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a vacuum low-temperature melting tank for low-acid-value animal fats to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vacuum low-temperature melting tank for low-acid-value animal fats includes a tank body, a refining box fixedly installed on the top inner wall of the tank body, a vacuum pump and a feeding port installed on the top of the refining box, heating plates installed on both inner walls of the tank body, and an inlet pipe and a drain pipe installed on both sides of the tank body respectively.

[0008] The material discharge mechanism includes a collection cylinder, which is slidably installed at the bottom of the tank body. An isolation cylinder is slidably connected to the bottom of the refining box, and the collection cylinder and the isolation cylinder cooperate with each other.

[0009] The cleaning mechanism includes two scrapers that are slidably mounted on the inner wall of the refining tank.

[0010] Preferably, the feeding mechanism further includes an arc-shaped stop bar, a discharge pipe is fixedly installed on the top of the collecting cylinder, a fixing rod is fixedly installed on the inner wall of the discharge pipe, a pull rod is movably connected to the fixing rod, and the pull rod is fixedly connected to the arc-shaped stop bar.

[0011] The curved stop bar can block the opening at the bottom of the refining box, and under the pull of the discharge pipe, it can cause the pull bar and the discharge pipe to form a relative displacement.

[0012] Preferably, the top of the isolation cylinder is provided with a discharge hole, a baffle is fixedly installed on the pull rod, the baffle cooperates with the discharge hole, and a stop block is fixedly installed at the bottom of the pull rod, a top spring is fixedly installed at the top of the stop block, and the top of the top spring is fixedly connected to the fixed rod.

[0013] The discharge hole facilitates the discharge of oil from the refining box, while the baffle isolates and blocks the flow. When the pull rod and discharge pipe move, the baffle opens. At the same time, the top spring and stop block pull and push the pull rod and baffle to keep the baffle closed over the discharge hole.

[0014] Preferably, two cylinders are fixedly installed on the inner wall of the top of the tank, and the pistons of the cylinders are fixedly connected to the collecting cylinder.

[0015] The cylinder is designed to push the collecting cylinder downwards, which in turn moves the discharge pipe downwards.

[0016] Preferably, the cleaning mechanism further includes two sliders, which are slidably mounted on two scrapers respectively. A connecting rod is fixedly mounted on the slider, and one end of the connecting rod is fixedly connected to the arc-shaped stop bar.

[0017] The movable arc-shaped stop bar can drive two sliders to move through two connecting rods. The sliders are connected to the scraper by sliding up and down, thereby limiting the scraper to the left and right.

[0018] Preferably, the pull rod has a spiral groove, the fixed rod has a movable hole, the movable hole is movably connected to the pull rod, and a sliding pin is fixedly installed on the inner wall of the movable hole, the sliding pin is slidably connected to the spiral groove.

[0019] When the pull rod and the fixed rod move relative to each other, the pull rod can rotate by sliding the spiral groove and the sliding pin. Then, the arc-shaped stop bar and the slider drive the scraper to rotate laterally, thereby scraping and cleaning the grease in the refining tank.

[0020] In summary, the technical effects and advantages of this utility model are as follows:

[0021] By sliding the refining box and the isolation cylinder (the isolation cylinder and the collection cylinder are linked), refining and discharging are integrated. When discharging, the cylinder pushes the collection cylinder down, which drives the isolation cylinder to move synchronously. The discharge hole is automatically opened by the arc-shaped stop bar and the mechanical block at the bottom of the refining box. No additional power is required, which simplifies the operation process.

[0022] The elastic structure of the top spring and the stop block ensures that the baffle keeps the discharge hole closed when the material is not being discharged, thus ensuring vacuum sealing. When discharging, the relative displacement of the pull rod and the fixed rod automatically releases the seal, avoiding the risk of contamination or leakage caused by manual intervention.

[0023] The spiral groove on the pull rod and the sliding pin of the fixed rod form a rotary transmission mechanism, which converts linear motion into the rotation of the pull rod during the feeding process. This rotation, in turn, drives the scraper to rotate laterally through the connecting rod, automatically cleaning the grease adhering to the inner wall of the refining box and solving the scaling problem of traditional equipment.

[0024] By combining an external heating plate (to maintain the oil temperature in the tank) with indirect heating inside the isolation cylinder, a double-layer uniform heat conduction is formed, which avoids the oxidation or hydrolysis of oil caused by local overheating. At the same time, the boiling point is lowered by a vacuum pump, further reducing the impact of high temperature on oil quality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a frontal cross-sectional view of the present invention.

[0027] Figure 3 This is a schematic diagram of the refining box and collecting cylinder of this utility model;

[0028] Figure 4 This is a schematic diagram of the material feeding mechanism and cleaning mechanism of this utility model;

[0029] Figure 5 This is a schematic diagram of the tie rod and fixing rod structure of this utility model.

[0030] In the picture:

[0031] 1. Tank body; 2. Refining box; 3. Feeding port; 4. Vacuum pump; 5. Isolation cylinder; 6. Discharge mechanism; 61. Collection cylinder; 62. Discharge pipe; 63. Baffle; 64. Discharge hole; 65. Fixing rod; 66. Pull rod; 67. Arc-shaped stop bar; 7. Cleaning mechanism; 71. Scraper; 72. Connecting rod; 73. Sliding block; 74. Spiral groove; 75. Sliding pin; 8. Cylinder; 9. Heating plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] Reference Figure 1-5 A vacuum low-temperature melting tank for low-acid-value animal fats includes a tank body 1, a refining box 2 fixedly installed on the top inner wall of the tank body 1, a vacuum pump 4 and a feeding port 3 installed on the top of the refining box 2, heating plates 9 installed on both inner walls of the tank body 1, and liquid inlet pipe and liquid outlet pipe installed on both sides of the tank body 1 respectively.

[0034] The material discharge mechanism 6 includes a collection cylinder 61, which is slidably installed at the bottom of the tank body 1. An isolation cylinder 5 is slidably connected to the bottom of the refining box 2. The collection cylinder 61 and the isolation cylinder 5 cooperate with each other.

[0035] The cleaning mechanism 7 includes two scrapers 71, which are slidably mounted on the inner wall of the refining box 2.

[0036] Reference Figure 2 and Figure 4 The discharge mechanism 6 also includes an arc-shaped stop bar 67. A discharge pipe 62 is fixedly installed on the top of the collection cylinder 61. A fixing rod 65 is fixedly installed on the inner wall of the discharge pipe 62. A pull rod 66 is movably connected to the fixing rod 65. The pull rod 66 is fixedly connected to the arc-shaped stop bar 67. A discharge hole 64 is opened on the top of the isolation cylinder 5. A baffle 63 is fixedly installed on the pull rod 66. The baffle 63 cooperates with the discharge hole 64. A stop block 69 is fixedly installed at the bottom of the pull rod 66. A top spring 68 is fixedly installed on the top of the stop block 69. The top of the top spring 68 is fixedly connected to the fixing rod 65. Two cylinders 8 are fixedly installed on the inner wall of the top of the tank body 1. The pistons of the cylinders 8 are fixedly connected to the collection cylinder 61. Next, the cylinder 8 pushes the collecting cylinder 61 downward, thereby driving the discharge pipe 62 downward. The discharge hole 64 facilitates the discharge of oil from the refining box 2, and the baffle 63 provides isolation and obstruction. When the pull rod 66 and the discharge pipe 62 move together, the baffle 63 opens. At the same time, the top spring 68 and the stop block 69 pull and push the pull rod 66 and the baffle 63, keeping the baffle 63 closed to the discharge hole 64. The arc-shaped stop bar 67 blocks the opening at the bottom of the refining box 2, and under the pull of the discharge pipe 62, it causes the pull rod 66 and the discharge pipe 62 to form a relative displacement.

[0037] Reference Figure 4The cleaning mechanism 7 also includes two sliders 73, which are slidably mounted on two scrapers 71. A connecting rod 72 is fixedly mounted on the slider 73, and one end of the connecting rod 72 is fixedly connected to the arc-shaped stop rod 67. A spiral groove 74 is provided on the pull rod 66, and a movable hole is provided on the fixed rod 65. The movable hole is movably connected to the pull rod 66, and a sliding pin 75 is fixedly mounted on the inner wall of the movable hole. The sliding pin 75 is slidably connected to the spiral groove 74. When the pull rod 66 and the fixed rod 65 move relative to each other, the sliding connection between the spiral groove 74 and the sliding pin 75 can drive the pull rod 66 to rotate. In turn, the arc-shaped stop rod 67 and the slider 73 drive the scraper 71 to rotate laterally, thereby scraping and cleaning the grease in the refining box 2. The moving arc-shaped stop rod 67 can drive the two sliders 73 to move through the two connecting rods 72. The sliders 73 are slidably connected to the scraper 71 up and down, thereby limiting the scraper 71 to the left and right.

[0038] Working Principle: During operation, animal fats and other materials are fed into the refining tank 2 through the feeding port 3 and then sealed. Simultaneously, the vacuum pump 4 is activated to create a vacuum negative pressure inside the refining tank 2, thereby lowering the boiling point of the water content in the animal fat and reducing oil hydrolysis and oxidation. During heating, heated oil or water is injected into the tank 1, and the oil heats the refining tank 2. The high-temperature oil also heats the inside of the refining tank 2 through the isolation cylinder 5, resulting in more uniform heating. The heating plate 9 further heats the oil in the tank 1, maintaining stability and reducing the risk of damage from direct heating. When refining of the animal fat is required, the cylinder 8 is activated. When the piston of cylinder 8 is closed, it drives the collecting cylinder 61 to move downward. The moving collecting cylinder 61 drives the isolation cylinder 5 to move downward through the discharge pipe 62. When the arc-shaped stop bar 67 contacts and blocks the bottom of the refining box 2, the discharge pipe 62 drives the fixed rod 65 and the pull rod 66 to move relative to each other, so that the discharge hole 64 above the isolation cylinder 5 is opened, thereby enabling the fat in the refining box 2 to be discharged and collected. At the same time, the moving pull rod 66 is slidably connected to the sliding pin 75 through the spiral groove 74, thereby enabling the pull rod 66 to rotate. Then, through the arc-shaped stop bar 67 and the slider 73, the scraper 71 is driven to rotate laterally, thereby scraping and cleaning the grease in the refining box 2, thus preventing the fat from sticking to the inner wall of the refining box 2.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum cryogenic melting tank for low-acid-value animal fats, comprising a tank body (1), characterized in that, A refining box (2) is fixedly installed on the top inner wall of the tank (1). A vacuum pump (4) and a feeding port (3) are installed on the top of the refining box (2). Heating plates (9) are installed on both sides of the inner wall of the tank (1). An inlet pipe and a drain pipe are installed on both sides of the tank (1). The material discharge mechanism (6) includes a collection cylinder (61), which is slidably installed at the bottom of the tank (1). The bottom of the refining box (2) is slidably connected to an isolation cylinder (5), and the collection cylinder (61) and the isolation cylinder (5) cooperate with each other. The cleaning mechanism (7) includes two scrapers (71) which are slidably mounted on the inner wall of the refining box (2).

2. The vacuum cryogenic melting tank for low-acid-value animal fats according to claim 1, characterized in that, The feeding mechanism (6) also includes an arc-shaped stop bar (67), a discharge pipe (62) is fixedly installed on the top of the collecting cylinder (61), a fixing rod (65) is fixedly installed on the inner wall of the discharge pipe (62), a pull rod (66) is movably connected to the fixing rod (65), and the pull rod (66) is fixedly connected to the arc-shaped stop bar (67).

3. The vacuum cryogenic melting tank for low-acid-value animal fats according to claim 2, characterized in that, The top of the isolation cylinder (5) is provided with a discharge hole (64), and a baffle (63) is fixedly installed on the pull rod (66). The baffle (63) cooperates with the discharge hole (64), and a stop block (69) is fixedly installed at the bottom of the pull rod (66). A top spring (68) is fixedly installed at the top of the stop block (69), and the top of the top spring (68) is fixedly connected to the fixing rod (65).

4. The vacuum cryogenic melting tank for low-acid-value animal fats according to claim 3, characterized in that, Two cylinders (8) are fixedly installed on the inner top wall of the tank (1), and the pistons of the cylinders (8) are fixedly connected to the collecting cylinder (61).

5. The vacuum cryogenic melting tank for low-acid-value animal fats according to claim 4, characterized in that, The cleaning mechanism (7) also includes two sliders (73), which are slidably mounted on two scrapers (71) respectively. A connecting rod (72) is fixedly mounted on the slider (73), and one end of the connecting rod (72) is fixedly connected to the arc-shaped stop bar (67).

6. The vacuum cryogenic melting tank for low-acid-value animal fats according to claim 5, characterized in that, The pull rod (66) has a spiral groove (74) and the fixed rod (65) has a movable hole. The movable hole is movably connected to the pull rod (66), and a sliding pin (75) is fixedly installed on the inner wall of the movable hole. The sliding pin (75) is slidably connected to the spiral groove (74).

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