JP5498985B2 - Vacuum deaerator - Google Patents

Description

  The present invention relates to a vacuum defoaming apparatus used in the manufacture of ham, sausage, bacon and the like. More specifically, the present invention relates to a vacuum defoaming apparatus for crushing bubbles of an injection liquid such as a pickle liquid.

Products such as ham, sausage and bacon are required to have a uniform taste throughout the product.
Therefore, a predetermined amount of pickle liquid and / or seasoning liquid is injected into meat chunks such as pigs, cattle and poultry, which are raw materials of the product, to achieve a uniform taste. (For example, see Patent Document 1).

  Conventional injection liquids are produced by mixing and stirring a liquid raw material and a powder raw material using a stirrer, but the injection liquid immediately after production contains many bubbles. It is not preferable to inject the injection liquid containing bubbles into the meat chunk because the pickle liquid is not uniformly distributed in the product (see, for example, Patent Document 2).

  Therefore, before the injection solution is supplied to the injector, a degassing process of the injection solution is performed by a vacuum defoaming device. In the injector processing step, an injection solution (collected injection solution) that is recovered without being injected into the meat chunk is generated. This recovered injection solution is reused after the defoaming process.

  This vacuum defoaming apparatus is provided with a defoaming treatment tank having a stirring means, a vacuum pump and a supply port communicating with the upper side of the tank, and a degassing tank below the defoaming tank. And a discharge port communicating with the foam liquid reservoir. In this vacuum defoaming device, the inside of the defoaming tank is evacuated by driving the vacuum pump, and the injection liquid supplied from the supply port is stirred by the stirring means and collided with the inner wall of the defoaming tank. Air bubbles are ruptured and defoamed.

  The defoamed injection liquid is sent from the discharge port to the defoaming liquid reservoir by a rotary centrifugal pump. The injection liquid in the defoaming reservoir is sent to the pickle liquid injection needle of the injector, and is injected into the meat mass by driving the needle into the meat mass.

Japanese Patent Application Laid-Open No. 6-209693 JP 7-213223 A

  In the conventional example, the defoamed infusion liquid in the defoaming tank is sent to the defoaming liquid reservoir using a rotary centrifugal pump. However, in order to continuously rotate the impeller of the rotary centrifugal pump, It is inevitable that the pressure fluctuation of the injection liquid occurs around the vehicle and the injection liquid is kneaded due to the pressure fluctuation.

  In addition, when the impeller of the rotary centrifugal pump is rotating, when the liquid feeding to the defoaming liquid reservoir is temporarily stopped, the impeller is idled in the pump. There is a problem that the pressure rises greatly and the injected liquid is kneaded by the pressure. Therefore, there is a possibility that the injection liquid bubbles, the temperature rises, and the injection liquid deteriorates.

  In view of the above circumstances, an object of the present invention is to make it possible to send a defoamed infusion solution to a desired place without foaming.

The present invention provides a defoaming tank for performing defoaming treatment of an injection liquid, a vacuum pump and a supply port communicating with the upper side of the defoaming tank, and a lower side of the defoaming tank, A pickling liquid vacuum defoaming device comprising a discharge port communicating with the defoaming liquid storage section, wherein the liquid feed pump is provided at each of pistons sliding inside a sealed cylinder and both ends of the cylinder. A discharge port that communicates with the defoaming liquid reservoir through a supply valve and an air release valve, and is disposed at both ends of the cylinder, and includes a defoaming tank, a common valve, and a suction valve. And an inlet port that communicates with each other.

  The discharge port and the atmosphere release valve of the present invention are characterized in that they communicate with a vacuum valve. The defoaming tank according to the present invention includes an air release valve. The defoaming tank according to the present invention includes a stirring means.

  Since the present invention is configured as described above, in the forward path, that is, the stroke in which the piston slides from one end side to the other end side, the injected liquid in the defoaming tank is sucked into the cylinder from the suction port on the one end side. In addition, in the return path, that is, the stroke in which the piston slides in the opposite direction, the injection liquid is sent from the discharge port on the one end side to the defoaming liquid storage section, and from the suction port on the other end side. The injection solution in the defoaming tank is sucked into the cylinder. In this way, by repeating the reciprocating stroke of the piston, the injected liquid in the defoaming tank can be conveyed to the defoamed liquid storage unit without foaming.

It is a figure which shows embodiment of this invention.

  An embodiment of the present invention will be described with reference to FIG. The vacuum defoaming apparatus 1 includes a defoaming tank 2, a stirrer 3, and a driving device 4 for the stirrer 3. An upper end portion of the defoaming tank 2 is sealed by a sealing plate 8, and a lid body 7 that covers and seals the driving device 4 is disposed on the sealing plate 8.

  The sealing plate 8 is provided with a communication port (not shown) that allows the defoaming tank 2 and the lid 7 to communicate with each other. A supply port 10 is provided on the upper side of the defoaming tank 2, and the supply port 10 is connected to an injection liquid tank 30 through a supply pipe 29. The infusion liquid tank 30 contains an infusion liquid such as a pickle liquid to be defoamed. The supply pipe 29 is provided with an opening / closing valve, for example, the electromagnetic switching valve 11. The defoaming tank 2 is formed in a substantially cylindrical shape, and a discharge port 14 is provided in the lower part thereof.

  The discharge port 14 is connected to the cylinder 15 via a liquid discharge pipe 23. The liquid discharge pipe 23 is provided with a common valve 24, and the downstream side of the common valve 24 is branched into a first branch pipe 16a and a second branch pipe 17a. The branch pipes 16 a and 17 a are connected to the first suction port 15 a and the second suction port 15 b of the cylinder 15 through the suction valves 16 and 17. As the intake valves 16 and 17, for example, electromagnetic switching valves are used.

The cylinder 15 is a sealed cylindrical body, in which a piston 20 with a piston rod 19 is slidably provided. The piston rod 19 is slid by driving of driving means (not shown) to displace the piston 20. In the vicinity of the movement locus of the piston rod 19, a pair of position detection sensors 21a and 21b are arranged at intervals. The position detection sensor 21a is an optical sensor that detects the forward sliding limit of the piston 20, and the position sensor 21b is an optical sensor that detects the backward sliding limit of the piston 20. The sensor is not necessarily limited to an optical sensor, and may be a contact sensor (limit switch), for example. Reference numeral 22 denotes a holder for holding the piston rod 19.

  The discharge port 15c on one end (left end) side of the cylinder 15 is on one (left side) leg portion 26a of the U-shaped tube 26, and the discharge port 15d on the other end (right end) side is on the other side (right side). ) Are respectively connected to the leg portions 26b. The leg portions 26a and 26b are provided with supply valves 27 and 28. As the supply valves 27 and 28, for example, check valves are used.

Atmospheric release valves 31 and 32 and vacuum valves 34 and 35 are disposed between the supply valves 27 and 28 and the discharge ports 15c and 15d. A discharge pipe 37 is connected to the central portion of the U-shaped tube 26, and the injected liquid in the U-shaped tube 26 flows into the defoamed liquid tank 38 through the discharge pipe 37.

The lid body 7 communicates with the vacuum pump 40 via an on-off valve, for example, an electromagnetic switching valve 39. The lid 7 is provided with an air release valve 12 communicating with the defoaming tank 2 . Reference numeral 41 denotes a control panel for controlling the electromagnetic switching valves 11, 16, 17, 24, 31, 32, the vacuum pump 40, and the like.

Next, the operation of this embodiment will be described.
First stage S1: The atmosphere release valve 12, the electromagnetic switching valve 11, the common valve 24, and the intake valves 16, 17 are closed.
S2: The vacuum pump 40 is turned on, the on-off valve 39 is opened, and the vacuum is drawn until a vacuum gauge (not shown) reaches a predetermined value. This predetermined value is, for example, 0.08 MPa.

Second stage S3: The common valve 24 is opened and the on-off valve 11 is opened. Then, the injection liquid 5 contained in the infusion liquid tank 30, but is sucked into the degassing tank 2, a predetermined amount, e.g., 300L, the on-off valve 11 Once sucked up close.
S4: The drive device 4 is driven, the stirrer 3 is rotated at a high speed, for example, 1 to 10 / min., And stirred, the injected solution is struck against the inner surface of the defoaming tank 2, and an impact force is applied to the bubbles. Rupture and defoam.

Third stage S5: The common valve 24 is opened.
S6: The on-off valve 11 is opened, and the injection solution 5 in the injection solution tank 30 is sucked into the defoaming tank 2 at a predetermined flow rate, for example, 50 L / min. The injection solution 5 sucked into the defoaming tank 2 is stirred by the rotation of the stirrer 3 and struck against the inner surface of the defoaming tank 2, so that the bubbles in the injection solution 5 receive an impact force and instantly Ruptures and disappears.

Fourth stage S7: The intake valve 16 is closed and the atmosphere release valve 31 is opened to release the atmosphere. Thereafter, the air release valve 31 is closed, the vacuum valve 34 is opened, and a vacuum pump (not shown) is driven to perform evacuation.

S8: The driving means is turned on and the piston rod 19 is slid in the direction of the arrow A19 (outward stroke). Then, the injected liquid 5a in the cylinder 15 is discharged from the discharge port 15c to the leg part 26a of the U-shaped tube 26, and flows into the defoamed liquid tank 38 through the check valve 27 and the discharge pipe 37. At this time, the injected liquid 5 a is sucked into the cylinder 15 from the suction port 15 b and stored in the cylinder 15.

As shown in S9: 20S, when the piston 20 reaches one end of the cylinder 15, the end 19a of the piston rod 19 is detected by the detection sensor 21a, and this detection signal is transmitted to the control panel 41. Then, the control panel 41 instructs the driving means to slide the piston rod 19 in the direction opposite to the arrow A19, closes the suction valve 17, and opens the suction valve 16. .

  Further, the control panel 41 opens the atmosphere release valve 32 to release the atmosphere, then closes the atmosphere release valve 32, opens the vacuum valve 35, and drives a vacuum pump (not shown) to draw a vacuum. Do.

S10: When the piston rod 19 slides in the direction opposite to the arrow A19 (return stroke), the injected liquid 5a in the cylinder 15 is discharged from the discharge port 15d to the leg portion 26b of the U-shaped tube 26 and reversely performed. It flows into the defoaming liquid tank 38 through the stop valve 28 and the discharge pipe 37. At this time, the injected liquid 5 a is sucked into the cylinder 15 from the suction port 15 a and stored in the cylinder 15.

S11: When the piston 20 reaches the other end of the cylinder 15, the end 19a of the piston rod 19 is detected by the return path sensor 21b, and this detection signal is transmitted to the control panel 41.

Fifth Stage After repeating the process of the fourth stage (S7 to S11) to perform a desired amount of defoaming processing, the on-off valve 11 is closed. And while stopping the vacuum pump 40, the air release valve 12 is opened and air-released, and the inside of the defoaming tank 2 is made atmospheric pressure.

Sixth stage In this state, as described above, the suction valves 16 and 17 are opened and closed in response to the forward stroke and the backward stroke of the piston 20, and the suction ports 15 a and 15 b are alternately opened and closed to thereby remove the defoaming tank 2. The injected liquid 5a is sent to the defoaming liquid tank 38.

1 Vacuum deaerator
2 Defoaming tank 3 Stirrer
4 Drive device 5 Injection solution
5a Injection liquid 10 after defoaming Supply port 11 Open / close valve 12 Atmospheric release valve 14 Discharge port 15 Cylinder 15a Suction port 15b Suction port 15c Discharge port 15d Discharge port 16 Suction valve 17 Suction valve 19 Piston rod 20 Piston 24 Common valve 27 Supply Valve 28 Supply valve 30 Injection liquid tank 31 Atmospheric release valve 32 Atmospheric release valve 34 Vacuum valve 35 Vacuum valve 38 Defoaming liquid tank 39 On-off valve 40 Vacuum pump

Claims (4)

A defoaming tank for defoaming the injection liquid, a vacuum pump and a supply port communicating with the upper side of the defoaming tank, and a defoaming liquid provided on the lower side of the defoaming tank via the liquid feed pump In the vacuum defoaming device of the pickle liquid comprising a discharge port communicating with the storage unit,
The liquid feed pump is disposed at a piston sliding in a sealed cylinder, and at both ends of the cylinder, and is connected to the defoamed liquid reservoir through a supply valve and an air release valve . A pickle liquid vacuum defoaming apparatus comprising: an outlet; and a suction port disposed at each end of the cylinder and communicating with the defoaming tank via a common valve and a suction valve. 2. The pickle liquid vacuum deaerator according to claim 1, wherein the discharge port and the atmosphere release valve communicate with a vacuum valve . The pickling liquid vacuum defoaming apparatus according to claim 1 , wherein the defoaming tank includes an air release valve . The pickling liquid vacuum defoaming apparatus according to claim 1 , wherein the defoaming tank includes a stirring unit .

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