Online cleaning device for oil-containing compound seasoning production line

Abstract

The utility model relates to an oil-containing composite seasoning production line on-line cleaning device which comprises a first oil tank, a second oil tank, a third oil tank and a fourth oil tank, one inlet end of the first oil tank is a crude oil inlet end, the other inlet end of the first oil tank is an oil return end, and the oil return end is connected with a first oil return pipeline which is connected with a valve; the outlet end is connected with a first outlet pipeline which is connected with a valve, a liquid feeding gear pump and a heat exchanger; the self-circulation pipeline group comprises a self-circulation pipeline connected between the first outlet pipeline and the first oil return pipeline and two groups of three-way valves; the cleaning pipeline set comprises a cleaning unit pipeline connected between the two sets of three-way valves and a pump body connected to the tail end of the cleaning unit pipeline, and a production line to be cleaned is connected to the cleaning unit pipeline. Edible oil is used as a cleaning solvent and a disinfection heat carrier, residual materials on a production line are washed and stripped by using the cleaning oil, the materials are continuously and circularly cleaned after passing through the slag removal equipment, and the cleaned oil can be used as oil for next product production or continuously used as oil for cleaning and disinfection.

Description

Technical Field

[0001] This utility model relates to the field of food production line cleaning and disinfection technology, specifically to an online cleaning device for an oil-containing compound seasoning production line. Background Technology

[0002] Currently, CIP cleaning of oil-containing compound seasoning production lines mainly uses alkaline solutions as cleaning agents. However, due to the large number of dead corners in the pipelines and equipment of compound seasoning production lines, the oil residue in these dead corners undergoes a saponification reaction with the cleaning alkaline solution, forming a white substance that adheres to the equipment surface, increasing the difficulty of cleaning and producing odors. On the other hand, water remains in the pipelines after cleaning and disinfection. Oil-containing compound seasonings, which have requirements for water content, require a large amount of flushing, resulting in material waste. Utility Model Content

[0003] The purpose of this invention is to provide an online cleaning device for oil-containing compound seasoning production lines, which can solve the technical problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an online cleaning device for an oil-containing compound seasoning production line, comprising a first oil tank, a self-circulating pipeline group, and a cleaning pipeline group. The first oil tank has at least two inlet ends and at least one outlet end, one inlet end being the crude oil inlet end and the other inlet end being the return oil end. The return oil end is connected to a first return oil pipeline, which is connected to a valve. The outlet end is connected to a first outlet pipeline, which is connected to a valve, a liquid delivery gear pump, and a heat exchanger. The self-circulating pipeline group includes a self-circulating pipeline connected between the first outlet pipeline and the first return oil pipeline, and two sets of three-way valves connected between the first outlet pipeline and the self-circulating pipeline, and between the self-circulating pipeline and the first return oil pipeline. The cleaning pipeline group includes a cleaning unit pipeline connected between the two sets of three-way valves and a pump body connected to its end. The production line to be cleaned is connected to the cleaning unit pipeline.

[0005] In a preferred embodiment, the first return oil line is connected to a filter.

[0006] In a preferred embodiment, the online cleaning device further includes a second oil tank, which has at least an oil inlet and an oil return end. The oil return end of the second oil tank is connected to a first oil return pipeline through a second oil return pipeline, and the outlet end of the second oil tank is connected to a first outlet pipeline through a second outlet pipeline. The second oil return pipeline and the second outlet pipeline are respectively equipped with valves.

[0007] In a preferred embodiment, the online cleaning device further includes a purification pipeline connected between the first oil tank and the second oil tank, and the purification pipeline is connected to a valve, a pump body, and a centrifuge.

[0008] In a preferred embodiment, the second oil tank is further connected to a vacuum pipeline and a vacuum pump connected to the vacuum pipeline, the vacuum pipeline being connected to a vacuum pipeline valve.

[0009] In a preferred embodiment, the first oil tank is further connected to a self-cleaning pipeline assembly, which includes a main cleaning pipeline connected to a self-circulation pipeline and a first branch cleaning pipeline connected to the main cleaning pipeline. The top of the first oil tank is provided with a cleaning ball connected to the first branch cleaning pipeline, and the main cleaning pipeline and the first branch cleaning pipeline are respectively provided with valves.

[0010] In a preferred embodiment, a cleaning ball is also connected to the top of the second oil tank, which is connected to the main cleaning pipeline via a second branch cleaning pipeline, and the second branch cleaning pipeline is equipped with a valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The online cleaning device for oil-containing compound seasoning production line provided by this utility model uses edible oil as cleaning solvent and disinfection heat carrier, and is designed with heating equipment so that the cleaning oil washes and peels off the residual materials on the production line under the pressure and flow provided by the gear pump. The cleaned oil can be used as oil for the next product production or continue to be used as cleaning and disinfection oil.

[0013] 2. In this solution, the cleaning oil can be circulated after passing through the slag removal equipment. The cleaning circulating return oil uses online filtration technology to remove the slag carried in the oil, preventing clogging of the washing balls. After cleaning, the dirty oil in the first oil tank is thoroughly deslag removed by a centrifuge and then enters the second oil tank for production line disinfection to prevent the oil from deteriorating at high temperatures.

[0014] 3. The hot oil for circulating disinfection is dehydrated and deoxygenated under vacuum and then cooled by heat exchange. Vacuum anti-oxidation measures are used to prevent oxidation of the cleaning oil. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the online cleaning device for an oil-containing compound seasoning production line provided in this embodiment of the present invention.

[0016] The meanings of the labels in the diagram are as follows:

[0017] 1. First oil tank; 14. Heat exchanger; 16. Self-circulation pipeline; 18. Filter; 111. Cleaning unit pipeline; 2. Centrifuge; 3. Second oil tank; 33. Vacuum pump; 52. Main oil delivery pipeline; 6. Low-pressure steam pipeline;

[0018] (12, 19, 21, 23, 31, 32, 41, 42, 43, 53, 54): Valves;

[0019] (112, 22): Rotary pump;

[0020] (13, 51): Gear pump;

[0021] (15, 17): Three-way valve. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example 1

[0025] This embodiment discloses an online cleaning device for an oil-containing compound seasoning production line. This device uses edible oil as a cleaning solvent and a heat carrier for disinfection.

[0026] See Figure 1 The online cleaning device includes a first oil tank 1 and a self-circulating pipeline group and a cleaning pipeline group connected to the first oil tank 1. The self-circulating pipeline group is used for self-circulating heating of edible oil in the first oil tank 1, and the cleaning pipeline group is used for automatic cleaning of the production line.

[0027] Specifically, the first oil tank 1 is a cleaning oil heat preservation storage tank, which is equipped with liquid level and temperature sensors for liquid level and temperature detection. This detection structure is existing technology.

[0028] The first oil tank 1 has at least two inlet ends. One inlet end is the crude oil inlet end, which is connected to the main oil pipeline 52 through the first branch oil pipeline. The main oil pipeline 52 is connected to the crude oil tank and the gear pump 51 is connected to the main oil pipeline 52. The first branch oil pipeline is connected to the valve 54. The other inlet end is the return oil end, which is connected to the first return oil pipeline. The first return oil pipeline is connected to the filter 18 and the valve 19. The filter 18 intercepts particulate matter in the circulating oil through the filter screen, preferably an automatic slag discharge filter.

[0029] The first oil tank 1 is provided with at least one outlet end, which is connected to a first outlet pipeline. The first outlet pipeline is connected to a valve 12, a liquid delivery gear pump 13, and a heat exchanger 14. The heat exchanger 14 is preferably a tubular heat exchanger. During heating, steam is introduced through the low-pressure steam pipeline 6 to heat the circulating oil and control the oil temperature. During cooling, cooling water is introduced to sterilize the pipeline, clean the oil, and cool it down, while also controlling the oil temperature.

[0030] The self-circulating pipeline assembly includes a self-circulating pipeline 16 connected between the first outlet pipeline and the first return pipeline, forming a closed loop. Three-way valves (15, 17) are connected between the first outlet pipeline and the self-circulating pipeline 16, and between the self-circulating pipeline 16 and the first return pipeline.

[0031] The cleaning pipeline assembly includes a cleaning unit pipeline 111 connected between three-way valve 15 and three-way valve 17, and a return rotor pump 112 connected to its end. The return rotor pump 112 is used to transport the cleaning oil return liquid back to the first oil tank 1, and its flow rate is about 10% greater than that of the liquid delivery gear pump 13. The production line to be cleaned is connected to the cleaning unit pipeline 111.

[0032] In this embodiment, the three-way valves (15, 17) are pneumatic three-way ball valves. By controlling the three-way valve 15, the first outlet pipeline can be selectively connected to the self-circulation pipeline 16 and the cleaning unit pipeline 111. By controlling the three-way valve 17, the first return oil pipeline can be selectively connected to the cleaning unit pipeline 111 and the self-circulation pipeline 16.

[0033] In this embodiment, all valves are pneumatic ball valves, which act as on / off valves and can control the on / off state of the corresponding pipelines.

[0034] The cleaning process of the online cleaning device for oil-containing compound seasoning production lines provided by the above solution is as follows:

[0035] 1. System oil replenishment (oil addition):

[0036] The food-grade crude oil tank is connected to the gear pump 51. The crude oil is transported to the first oil tank 1 through the main oil pipeline 52, the first branch oil pipeline, and the valve 54. When the liquid level in the first oil tank 1 is lower than the set value during circulation cleaning, the gear pump 51 and the valve 54 are opened. When the liquid level in the first oil tank 1 reaches the set value, the gear pump 51 and the valve 54 are closed. It can be understood that the above-mentioned action process is controlled by a control module (such as a PLC). The control module receives the liquid level detection data of the first oil tank 1 and controls the opening and closing of the gear pump 51 and the valve 54 accordingly. This control mode is a mature existing technology and will not be described in detail in this embodiment.

[0037] 2. Heating the cleaning oil in the circulation system:

[0038] Valve 12 of the first outlet pipeline is opened, three-way valve 15 connects the first outlet pipeline and the self-circulation pipeline 16, and three-way valve 17 connects the self-circulation pipeline 16 and the first return oil pipeline; valve 19 is opened, opening the passage between the self-circulating cleaning oil and the first oil tank 1; the liquid delivery gear pump 13 and the steam delivery valve of the heat exchanger 14 are opened simultaneously, and the circulating oil in the first oil tank 1 is delivered to the heat exchanger 14 for heating, and then returns to the first oil tank 1 through three-way valve 15, self-circulation pipeline 16, three-way valve 17, and valve 19, circulating and heating until the temperature reaches the set value (e.g., 80℃).

[0039] Three: Circulating cleaning:

[0040] Valve 12 of the first outlet pipeline is opened, three-way valve 15 connects the first outlet pipeline and cleaning unit pipeline 111, and three-way valve 17 connects cleaning unit pipeline 111 and the first return oil pipeline. Gear pump 13 delivers cleaning oil heated to the set temperature to cleaning unit pipeline 111 to clean the production line cleaning unit. The delivery pressure is not less than 0.4 MPa, and the flow rate is not less than 2 m / s. The steam valve of heat exchanger 14 opens when the temperature is below the lower limit (e.g., 80℃) to reheat the cleaning oil. The cleaning oil after cleaning the cleaning unit is drawn back by return rotor pump 112. The cleaning oil enters the first return oil pipeline through three-way valve 17, and after large particles are removed by filter 18, it returns to the first oil tank 1 through valve 19. The cleaning cycle continues until the cleaning time reaches the expected value (30-60 min), at which point the cleaning is complete. The cleaning flow rate and pressure are controlled by PID control of the flow sensor and pressure sensor on the pipeline.

[0041] Example 2

[0042] The online cleaning device for oil-containing compound seasoning production line provided in this embodiment has a roughly the same structure as that in Embodiment 1. Therefore, for the sake of simplicity, only the differences will be described in detail here.

[0043] like Figure 1As shown in the figure, in this embodiment, the online cleaning device also includes a second oil tank 3, which is a hot oil temporary storage tank used to store purified oil. This purified oil can be used as disinfectant oil, and the specific purification and disinfection methods will be described below. Similarly, the second oil tank 3 is also equipped with level and temperature sensors.

[0044] Specifically, the second oil tank 3 has multiple inlet ends. The first inlet end is the crude oil inlet end, which is connected to the main oil pipeline 52 via a second branch oil pipeline. The second branch oil pipeline is connected to a valve 53. The second inlet end is the return oil end, which is connected to a second return oil pipeline. The second return oil pipeline is connected to a valve 32 and is connected to the first return oil pipeline. The second oil tank 3 has at least one outlet end, which is connected to a second outlet pipeline. The second outlet pipeline is connected to a valve 31 and is connected to the first outlet pipeline. Through the connection between the second oil tank 3 and the first outlet pipeline and the first return oil pipeline, the oil in the second oil tank 3 can also be self-circulated for heating or cooling, and used in the production line cleaning unit.

[0045] It should be noted that in this embodiment, the online cleaning device also includes a purification pipeline. The cleaning oil in the first oil tank 1 becomes impurity-laden after cleaning the equipment. To prevent the oil from becoming rancid and wasting the cleaning oil, the cleaning oil is purified after each cleaning cycle. Specifically, the first oil tank 1 also has another outlet: a second outlet. Correspondingly, the second oil tank 3 also has a third inlet. The purification pipeline connects the second outlet of the first oil tank 1 and the third inlet of the second oil tank 3. The purification pipeline connects to a valve 21 (near the first oil tank 1), a rotor pump 22, a centrifuge 2, and a valve 23 (near the second oil tank 3). In this embodiment, the centrifuge 2 is preferably a disc centrifuge, a two-phase centrifuge (6000-8000G), capable of separating the waste oil from the CIP cleaning residue. This structure allows the impurity cleaning oil in the first oil tank 1 to be pumped into the centrifuge 2 for oil-residue separation, and the purified clean oil to flow into the second oil tank 3.

[0046] Furthermore, the second oil tank 3 is also connected to a vacuum pipeline and a vacuum pump 33 connected to the vacuum pipeline, and the vacuum pipeline is connected to a vacuum pipeline valve. The vacuum pump 33 can generate negative pressure in the second oil tank 3, thereby causing the water in the hot oil inside the tank to overflow from the oil under a certain vacuum degree and temperature, and extracting oxygen from the oil.

[0047] The operation process of the online cleaning device for oil-containing compound seasoning production lines provided by the above solution is as follows:

[0048] 4. Circulating oil purification:

[0049] After centrifuge 2 is turned on and running normally, open valve 21, rotor pump 22, and valve 23 at the bottom of the first oil tank 1. The cleaning oil containing impurities stored in the first oil tank 1 is transported to centrifuge 2 through valve 21 and rotor pump 22. Under the strong centrifugal force of centrifuge 2, the clear liquid is discharged through the clear liquid outlet of centrifuge 2 and enters the second oil tank 3 through valve 23. Impurities are collected by the discs of centrifuge 2 and discharged from centrifuge 2 by controlling the opening time of the slag discharge port of centrifuge 2 until all the cleaning oil in the first oil tank 1 is purified and enters the second oil tank 3, thus completing the purification process.

[0050] 5. Heating the second oil tank (3):

[0051] The valve 31 at the bottom of the second oil tank 3 is opened, the three-way valve 15 connects the first outlet pipeline and the self-circulation pipeline 16, and the three-way valve 17 connects the self-circulation pipeline 16 and the first return oil pipeline; the valve 32 is opened, and the passage between the self-circulating hot oil and the second oil tank 3 is opened; the liquid delivery gear pump 13 and the steam delivery valve of the heat exchanger 14 are opened at the same time, and the purified oil in the second oil tank 3 is delivered to the heat exchanger 14 for heating, and then enters the second oil tank 3 through the three-way valve 15, the self-circulation pipeline 16, the three-way valve 17, and the valve 32, and is circulated and heated until the temperature reaches the set value of 120°C or above.

[0052] 6. Hot oil sterilization:

[0053] The valve 31 at the bottom of the second oil tank 3 is opened, the three-way valve 15 connects the first outlet pipeline and the cleaning unit pipeline 111, and the three-way valve 17 connects the cleaning unit pipeline 111 and the first return oil pipeline. The liquid delivery gear pump 13 delivers hot oil above 120℃ to the cleaning unit pipeline 111 to disinfect the production line cleaning unit. The delivery pressure is not less than 0.4MPa and the flow rate is not less than 2m / s. The steam valve of the heat exchanger 14 opens when the temperature is below the lower limit (e.g., 120℃) to reheat the hot oil. The hot oil after disinfection of the cleaning unit is drawn back by the return rotor pump 112, passes through the filter 18 and valve 32, and enters the second oil tank 3. The circulation sterilization continues until the sterilization time reaches the expected value (30-60min), at which point the sterilization ends.

[0054] During hot oil sterilization, when the liquid level in the second oil tank 3 is lower than the set value, the gear pump 51 and valve 53 are opened; when the liquid level in the second oil tank 3 reaches the set value, the gear pump 51 and valve 53 are closed.

[0055] 7. Hot oil protection

[0056] After disinfection, all control valves of the second oil tank 3 are closed, the vacuum pipeline valve is opened, and the vacuum pump 33 is started to create a vacuum of -0.06 to 0.08 MPa in the second oil tank 3. The residual heat in the second oil tank 3 is used to expel the moisture and air introduced into the hot oil during the cleaning and disinfection process. Then, valve 31 is opened, three-way valve 15 connects the first outlet pipeline and the self-circulation pipeline 16, and three-way valve 17 connects the self-circulation pipeline 16 and the first return oil pipeline; valve 32 is opened, opening the passage between the self-circulating hot oil and the second oil tank 3; the liquid delivery gear pump 13 and the cooling water valve of the heat exchanger 14 are opened simultaneously, delivering the oil to the heat exchanger 14 for cooling, and then entering the second oil tank 3 through three-way valve 15, self-circulation pipeline 16, three-way valve 17, and valve 32, circulating and cooling until the temperature reaches the set value below 60℃. Close all valves, gear pumps, and vacuum pump 33 to maintain a vacuum of -0.06 to 0.08 MPa in the hot oil tank and keep the oil temperature below 60°C to prevent the hot oil from deteriorating.

[0057] 8. Clean again

[0058] Open the vacuum breaking valve of the second oil tank 3 to restore the pressure inside the second oil tank 3 to normal pressure. Open valve 31, and the three-way valve 15 connects the first outlet pipeline and the self-circulation pipeline 16. The three-way valve 17 connects the self-circulation pipeline 16 and the first return oil pipeline. Open valve 19, and the liquid delivery gear pump 13 and the steam delivery valve of the heat exchanger 14 are opened simultaneously to transport the hot oil in the second oil tank 3 to the heat exchanger 14 for heating. Then, the hot oil enters the first oil tank 1 through the three-way valve 15, the self-circulation pipeline 16, the three-way valve 17, and the valve 19, and is heated to above 80°C until all the hot oil in the second oil tank 3 is completely transported to the first oil tank 1. Close all valves and pumps. Repeat the operation of process three in embodiment one to clean the cleaning unit.

[0059] Example 3

[0060] The online cleaning device for oil-containing compound seasoning production line provided in this embodiment has a roughly the same structure as that in Embodiment 2. Therefore, for the sake of simplicity, only the differences will be described in detail here.

[0061] In this embodiment, the first oil tank 1 is also connected to a self-cleaning pipeline assembly, which includes a main cleaning pipeline connected to the self-circulation pipeline 16 and a first branch cleaning pipeline connected to the main cleaning pipeline. The main cleaning pipeline is equipped with a valve 41, and the first branch cleaning pipeline is connected with a valve 42. A cleaning ball is provided on the top of the first oil tank 1 and is connected to the first branch cleaning pipeline.

[0062] Preferably, the top of the second oil tank 3 is also connected to a cleaning ball, which is connected to the main cleaning pipeline through a second branch cleaning pipeline. The second branch cleaning pipeline is equipped with a valve 43.

[0063] The operation process of the online cleaning device for oil-containing compound seasoning production lines provided by the above solution is as follows:

[0064] Nine: Self-cleaning of the first oil tank:

[0065] When cleaning the first oil tank 1, hot oil from the second oil tank 3 is used as the cleaning agent. The method is as follows: Valve 31 at the bottom of the second oil tank 3 is opened, and the three-way valve 15 connects the first outlet pipeline and the self-circulation pipeline 16, while the three-way valve 17 is closed. Valves 41 and 42 are opened, and the oil is pumped through the liquid delivery gear pump 13, passing through the three-way valve 15, the self-circulation pipeline 16, valves 41 and 42, into the cleaning ball of the first oil tank 1. When the liquid level in the first oil tank 1 reaches the set value, valve 12 is opened and valve 31 is closed to perform self-circulation cleaning of the first oil tank 1. After cleaning, the fourth process (circulating oil purification) or the eighth process (re-cleaning) is performed.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An online cleaning device for an oil-containing compound seasoning production line, characterized in that, include: The first oil tank has at least two inlet ends and at least one outlet end. One inlet end is the crude oil inlet end, and the other inlet end is the return oil end. The return oil end is connected to a first return oil pipeline, and the first return oil pipeline is connected to a valve. The outlet end is connected to a first outlet pipeline, and the first outlet pipeline is connected to a valve, a liquid delivery gear pump, and a heat exchanger. The self-circulation pipeline assembly includes a self-circulation pipeline connected between the first outlet pipeline and the first return oil pipeline, and two sets of three-way valves connected between the first outlet pipeline and the self-circulation pipeline, and between the self-circulation pipeline and the first return oil pipeline. The cleaning pipeline assembly includes a cleaning unit pipeline connected between two sets of three-way valves and a pump body connected to its end. The production line to be cleaned is connected to the cleaning unit pipeline.

2. The online cleaning device for oil-containing compound seasoning production line according to claim 1, characterized in that, The first return oil line is connected to a filter.

3. The online cleaning device for oil-containing compound seasoning production line according to claim 1, characterized in that, The online cleaning device also includes a second oil tank, which has at least an oil inlet and an oil return end. The oil return end of the second oil tank is connected to the first oil return pipeline through a second oil return pipeline, and the outlet end of the second oil tank is connected to the first outlet pipeline through a second outlet pipeline. The second oil return pipeline and the second outlet pipeline are respectively equipped with valves.

4. The online cleaning device for oil-containing compound seasoning production line according to claim 3, characterized in that, The online cleaning device also includes a purification pipeline connected between the first oil tank and the second oil tank, and the purification pipeline is connected to valves, a pump body and a centrifuge.

5. The online cleaning device for oil-containing compound seasoning production line according to claim 3, characterized in that, The second oil tank is also connected to a vacuum pipeline and a vacuum pump connected to the vacuum pipeline, and the vacuum pipeline is connected to a vacuum pipeline valve.

6. The online cleaning device for oil-containing compound seasoning production line according to claim 3, characterized in that, The first oil tank is also connected to a self-cleaning pipeline assembly, which includes a main cleaning pipeline connected to the self-circulation pipeline and a first branch cleaning pipeline connected to the main cleaning pipeline. The top of the first oil tank is provided with a cleaning ball connected to the first branch cleaning pipeline. The main cleaning pipeline and the first branch cleaning pipeline are respectively provided with valves.

7. The online cleaning device for oil-containing compound seasoning production line according to claim 6, characterized in that, The top of the second oil tank is also connected to a cleaning ball, which is connected to the main cleaning pipeline through a second branch cleaning pipeline. The second branch cleaning pipeline is equipped with a valve.

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