Sludge treatment equipment

Abstract

The utility model discloses sludge treatment equipment and relates to the technical field of sludge treatment. The sludge treatment equipment comprises a main body, a drying jacket and an exhaust assembly. A drying cavity is formed in the main body, a sludge inlet and a sludge outlet which are communicated with the drying cavity are respectively formed in the main body, the sludge inlet is positioned above the main body, and the sludge outlet is positioned below the side wall of the main body; the drying jacket is arranged on the main body, a first heating cavity is formed in the drying jacket, and the first heating cavity is arranged on the outer side of the drying cavity in a surrounding mode; the exhaust assembly is arranged above the main body and is used for exhausting water vapor of the drying cavity; according to the sludge treatment equipment provided by the utility model, the to-be-treated sludge is input into the drying cavity, then the drying jacket is used for drying the sludge, and when the sludge is dried until the water content meets the requirement, the sludge is discharged and transferred to the boiler to be used as fuel, so that the recycling of the sludge is realized, and the pollution of the sludge to the environment is reduced; the treatment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, in particular to sludge treatment equipment. Background Art

[0002] Excess sludge from sewage treatment plants is primarily composed of microbial flora, along with some inorganic matter and organic matter adsorbed on the surface of activated sludge but no longer biodegradable. After undergoing a series of treatment processes within the sewage treatment plant, this excess sludge typically undergoes solid-liquid separation. The moisture content of this residual sludge remains roughly between 80% and 90%, a high moisture content that presents significant challenges for subsequent treatment.

[0003] Currently, the two most common methods for treating this type of excess sludge are landfill and direct incineration. However, direct landfill not only occupies a significant amount of land resources, but also potentially pollutes soil and groundwater through infiltration and other harmful substances in the sludge, leading to a series of environmental problems. On the other hand, if the sludge is directly pumped into the boiler furnace for incineration, the high moisture content (80%-90%) of the sludge will seriously affect the boiler's steam production efficiency and reduce thermal energy utilization. While using specially designed incinerators to incinerate the sludge can partially address the moisture content issue, the incineration process requires a large amount of fuel to provide the necessary heat, which significantly increases treatment costs and makes this method economically unfeasible. Utility Model Content

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies in the related art, and the present invention provides a sludge treatment device.

[0005] The utility model provides the following technical solutions:

[0006] A sludge treatment device comprises a main body, a drying jacket and an exhaust component.

[0007] A drying chamber is provided in the main body, and a mud inlet and a mud outlet connected to the drying chamber are respectively provided on the main body, the mud inlet is located above the main body, and the mud outlet is located below the side wall of the main body; the drying jacket is provided on the main body, and a first heating chamber is provided on the drying jacket, and the first heating chamber is surrounded by the outside of the drying chamber; the exhaust component is provided above the main body, and is used to discharge water vapor from the drying chamber.

[0008] As a further improvement of the above technical solution, the first heating chamber has a first water inlet and a first water outlet. The first water inlet is connected to the water supply port of the water supply equipment through a water pipe, and the first water outlet is connected to the return water port of the water supply equipment through a water pipe.

[0009] As a further improvement of the above technical solution, the first water inlet is located below the first heating chamber, and the first water outlet is located above the first heating chamber.

[0010] As a further improvement of the above technical solution, diversion pipes are horizontally provided above and below the first heating chamber, and the two diversion pipes are connected to the first heating chamber through multiple branches, respectively. The first water inlet is arranged on the lower diversion pipe, and the first water outlet pipe is arranged on the upper diversion pipe.

[0011] As a further improvement of the above technical solution, a stirring shaft is horizontally provided in the drying chamber, stirring blades are evenly distributed around the stirring shaft, a driving motor is provided on the main body, and the driving motor is in transmission cooperation with the stirring shaft.

[0012] As a further improvement of the above technical solution, the stirring blades are spirally arranged relative to the axis of the stirring shaft, and the rotation of the stirring shaft can drive the stirring blades to rotate and push the sludge in the drying chamber to move toward the mud outlet.

[0013] As a further improvement of the above technical solution, a cavity circuit is provided in the stirring shaft and the stirring blade. The cavity circuit in the stirring shaft and the cavity circuit in the stirring blade are interconnected to form a second heating chamber. A communicating vessel is provided at the end of the stirring shaft away from the drive motor. The communicating vessel is provided with a second water inlet and a second water outlet connected to the second heating chamber. The second water inlet is connected to the water supply port of the water supply equipment through a water pipe, and the second water outlet is connected to the return water port of the water supply equipment through a water pipe.

[0014] As a further improvement of the above technical solution, the water supply equipment is specifically a steam compression equipment in the workshop, and the steam compression equipment can provide steamed water at about 80-85 degrees.

[0015] As a further improvement of the above technical solution, the exhaust assembly includes an exhaust pipe, which is arranged above the main body and communicates with the drying chamber.

[0016] As a further improvement of the above technical solution, an exhaust pump is provided on the exhaust pipe.

[0017] As a further improvement of the above technical solution, an electric control valve is provided at the mud outlet.

[0018] As a further improvement of the above technical solution, a cleaning port communicating with the drying chamber is provided above the main body, and a cleaning door is provided on the cleaning port.

[0019] Compared with the related art, the beneficial effects of the present invention are:

[0020] The sludge treatment equipment provided by this utility model first delivers the residual sludge from the sewage treatment plant, after dehydration, into a drying chamber via a series of conveying devices. Subsequently, a water supply device circulates hot water into a first heating chamber within the drying jacket, surrounding the outer surface of the drying chamber. This operation ensures that the sludge in the drying chamber receives a continuous and uniform supply of heat, thus achieving cyclic heating and drying.

[0021] In the drying chamber, as the sludge is heated, the moisture contained in it gradually evaporates due to the heat, forming a large amount of water vapor. This water vapor is orderly discharged out of the equipment through the exhaust component, thus avoiding interference and impact on the internal environment of the equipment.

[0022] After a certain period of heating and drying, the sludge reaches the desired moisture content, meeting the standards for subsequent use. The equipment then automatically or manually discharges the treated sludge and transfers it to the boiler for use as fuel via appropriate transport methods. This process not only effectively recycles and reuses the sludge, but also significantly reduces environmental pollution and lowers sludge treatment costs.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of a sludge treatment device according to one embodiment of the present invention is shown;

[0026] Figure 2 Shown Figure 1 A is an enlarged schematic diagram;

[0027] Figure 3 Shown Figure 1 A magnified schematic diagram of the middle B;

[0028] Figure 4 A structural schematic diagram of a water supply device from one perspective in one embodiment of the present utility model is shown.

[0029] Description of main component symbols:

[0030] 100-main body; 110-drying chamber; 120-mud inlet; 130-mud outlet; 131-electrically controlled valve; 140-driving motor; 150-cleaning door; 200-drying jacket; 210-first water inlet; 220-first water outlet; 300-exhaust assembly; 310-exhaust pipe; 320-exhaust pump; 400-water supply equipment; 410-water supply port; 420-water return port; 430-water pipe; 440-water pump; 510-agitation shaft; 520-agitation blade; 530-second heating chamber; 540-communication vessel; 541-second water inlet; 542-second water outlet. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] Combine Figure 1 、 Figure 2 As shown, this embodiment provides a sludge treatment device, including a main body 100 , a drying jacket 200 , and an exhaust assembly 300 .

[0037] A drying chamber 110 is provided in the main body 100, and a mud inlet 120 and a mud outlet 130 connected to the drying chamber 110 are respectively provided on the main body 100, the mud inlet 120 is located above the main body 100, and the mud outlet 130 is located below the side wall of the main body 100; the drying jacket 200 is provided on the main body 100, and a first heating chamber is provided on the drying jacket 200, and the first heating chamber is surrounded by the outside of the drying chamber 110; the exhaust component 300 is provided above the main body 100, and is used to discharge water vapor from the drying chamber 110.

[0038] The sludge treatment equipment provided in this embodiment, during the process of drying the sludge, will first send the residual sludge after dehydration treatment in the sewage treatment plant through a series of related conveying equipment from the mud inlet 120 of the sludge treatment equipment into the drying chamber 110. Subsequently, the water supply equipment 400 is used to circulate hot water into the first heating chamber surrounding the outside of the drying chamber 110 in the drying jacket 200. This operation ensures that the sludge in the drying chamber 110 can receive a continuous and uniform supply of heat, thereby realizing circulating heating and drying. In the drying chamber 110, after the sludge is heated, the moisture contained in it will gradually evaporate due to the heat, forming a large amount of water vapor. These water vapors will be discharged out of the equipment in an orderly manner through the exhaust component 300, thereby avoiding interference and impact on the internal environment of the equipment.

[0039] After a certain period of heating and drying, the sludge reaches the desired moisture content, meeting the standards for subsequent use. The treated sludge is then automatically or manually discharged through the equipment and transported to the boiler for use as fuel via appropriate means. This process not only effectively recycles and reuses the sludge, but also significantly reduces environmental pollution and lowers sludge treatment costs.

[0040] In some specific embodiments, the first heating chamber has a first water inlet 210 and a first water outlet 220. The first water inlet 210 is connected to the water supply port 410 of the water supply device 400 through a water pipe 430, and the first water outlet 220 is connected to the return water port 420 of the water supply device 400 through a water pipe 430. Such a design not only makes the water circulation of the entire system smoother and more efficient, but also can continuously transport hot water into the first heating chamber through the water supply device 400, and then allow the water with lowered temperature to flow back, thereby ensuring a stable and continuous circulating heat supply to the sludge in the drying chamber 110.

[0041] like Figure 4 As shown, in some specific embodiments, a water pump 440 is installed on the water pipe 430 connected to the water replenishment port 410 of the water supply device 400 to improve the water delivery efficiency.

[0042] In some specific embodiments, the first water inlet 210 is located below the first heating chamber, and the first water outlet 220 is located above the first heating chamber; such a layout is conducive to the water flow entering the first heating chamber more smoothly, avoiding excessive bubbles or turbulence during the water intake process, which affects the heating effect. Correspondingly, the first water outlet 220 is set above the first heating chamber. Such a design allows the heated water to naturally rise and flow to the water outlet under the action of gravity and thermal convection, further improving the efficiency of water circulation. At the same time, such a layout also helps to reduce the amount of residual water in the heating chamber, so that the water in each cycle can be fully utilized, thereby improving the thermal efficiency and energy utilization of the entire system.

[0043] In some specific embodiments, diversion pipes are horizontally provided above and below the first heating chamber, and the two diversion pipes are connected to the first heating chamber through a plurality of branch pipes, respectively. The first water inlet 210 is provided on the diversion pipe at the bottom, and the first water outlet pipe is provided on the diversion pipe at the top. In operation, hot water first enters the diversion pipe at the bottom through the first water inlet 210. This water inlet is cleverly designed at an appropriate position on the diversion pipe so that the hot water can flow evenly to each branch pipe. As the hot water flows, it will be effectively diverted by these branch pipes and then enter the first heating chamber evenly. This diversion method greatly reduces the possibility of local overheating or uneven cooling, and ensures the uniformity of the temperature in the heating chamber. At the same time, as the hot water continues to be input, its temperature gradually drops. The hot water will be collected in the diversion pipe at the top and eventually discharged out of the system through the first water outlet pipe.

[0044] This design not only ensures uniform hot water input and output within the first heating chamber, but also significantly improves the uniformity of sludge heating within the drying chamber 110. Because the hot water is more evenly distributed within the heating chamber, the sludge is also more evenly heated, achieving a more efficient drying effect. Furthermore, this design helps extend the life of the heating chamber by reducing thermal stress caused by uneven temperatures.

[0045] In some specific embodiments, a stirring shaft 510 is horizontally provided within the drying chamber 110, with stirring blades 520 uniformly distributed around the circumference of the stirring shaft 510. A drive motor 140 is provided on the main body 100, and the drive motor 140 is in transmission cooperation with the stirring shaft 510. During actual operation, when the drive motor 140 is started, the stirring shaft 510 begins to rotate, thereby driving the stirring blades 520 around the circumference to uniformly stir the sludge within the drying chamber 110. This stirring action not only helps to evenly heat the sludge during the drying process, but also promotes the evaporation and diffusion of moisture within the sludge, thereby further improving the uniformity and efficiency of drying.

[0046] In some specific embodiments, the stirring blades 520 are spirally arranged relative to the axis of the stirring shaft 510. Rotation of the stirring shaft 510 can drive the stirring blades 520 to rotate and push the sludge in the drying chamber 110 toward the sludge outlet 130. When the stirring shaft 510 begins to rotate, the spirally arranged stirring blades 520 rotate accordingly, generating forward thrust during the rotation process. This thrust can effectively propel the sludge in the drying chamber 110 along a specific path toward the sludge outlet 130. This movement method not only helps to evenly heat the sludge during the drying process, but also ensures that the sludge can be smoothly discharged from the sludge outlet 130 after drying is completed, thereby avoiding the problem of sludge being retained or blocked in the drying chamber 110.

[0047] Furthermore, the spirally arranged stirring blades 520 can also increase the contact area between the sludge and the inner wall of the drying chamber 110 to a certain extent, which helps to improve the sludge drying efficiency. Because when the sludge is pushed by the stirring blades 520, they will continuously collide and rub against the inner wall of the drying chamber 110. This collision and friction can accelerate the evaporation of water in the sludge, thereby further improving the uniformity and efficiency of drying.

[0048] like Figure 3 As shown, in some specific embodiments, a cavity loop is provided in the stirring shaft 510 and the stirring blade 520. The cavity loop in the stirring shaft 510 and the cavity loop in the stirring blade 520 are interconnected to form a second heating chamber 530. The flow direction of the hot water in the second heating chamber 530 is as shown in FIG. Figure 3 As shown by the arrow in ; the end of the stirring shaft 510 away from the driving motor 140 is provided with a communicating vessel 540, and the stirring shaft 510 can rotate relative to the communicating vessel 540. The communicating vessel 540 is provided with a second water inlet 541 and a second water outlet 542 which are connected to the second heating chamber 530. The second water inlet 541 is connected to the water supply port 410 of the water supply equipment 400 through the water pipe 430, and the second water outlet 542 is connected to the return water port 420 of the water supply equipment 400 through the water pipe 430. This design ensures that the second heating chamber 530 can smoothly circulate water with the external water supply equipment 400.

[0049] In actual operation, the second water inlet 541 is connected to the water supply port 410 of the water supply device 400 via a water pipe 430, while the second water outlet 542 is connected to the water return port 420 of the water supply device 400 via another water pipe 430. When the water supply device 400 is started, hot water flows from the water supply port 410 through the water pipe 430 into the second water inlet 541 and then into the second heating chamber 530. As the agitator shaft 510 and agitator blades 520 rotate, this hot water continuously circulates within the cavity circuit and transfers heat to the sludge in the drying chamber 110 through heat conduction.

[0050] As heat is transferred, the temperature of the sludge gradually increases, thereby achieving the purpose of drying. At the same time, because the hot water in the second heating chamber 530 continuously circulates during the rotation of the stirring shaft 510 and the stirring blades 520, it ensures uniform heat distribution, avoiding problems such as local overheating or uneven cooling. As the temperature of the hot water gradually decreases during the heat transfer process, it flows out of the second water outlet 542 and returns to the water supply device 400 through the water pipe 430 for reheating and recycling.

[0051] To sum up, by setting up a second heating chamber 530 in the stirring shaft 510 and the stirring blades 520, and cleverly using the communicating vessel 540, the second water inlet 541 and the second water outlet 542 to achieve connection with the external water supply equipment 400, not only the heating efficiency and heating uniformity of the sludge in the drying chamber 110 are improved, but also the effective utilization and recycling of heat are achieved.

[0052] In some specific embodiments, the water supply device 400 is specifically a steam compression device in a workshop. Specifically, the water supply device 400 is not a general heating or water supply device, but a highly efficient and environmentally friendly steam compression device (MVR) in the workshop. This type of steam compression device has been widely used in industrial production due to its unique operating principle and high energy conversion efficiency.

[0053] This steam compression equipment provides steam water at a stable temperature of approximately 80-85°C, an ideal temperature range for sludge drying. As this steam water circulates through the drying system, it continuously provides a stable heat source for the sludge, ensuring uniform heating during the drying process and avoiding localized overheating or insufficient drying. According to actual measurements, it takes approximately six hours for one cubic meter of sludge to be reduced to approximately 15-20% moisture content, achieving the desired drying effect, using circulating heat from 80-85°C steam water.

[0054] The dried sludge not only significantly reduces its volume but also significantly increases its calorific value. Calorific value testing shows that the sludge typically has a calorific value between 2,000 and 3,000 kcal, a level sufficient for use as a biomass fuel. Therefore, the dried sludge can be directly transferred to boilers, replacing traditional fossil fuels and achieving energy reuse and resource conservation.

[0055] Furthermore, using steam compression equipment as water supply equipment 400 offers a significant advantage: it can reuse the heat from the steamed water discharged from the workshop. During operation, the steam compression equipment adjusts the temperature of the steamed water as needed, effectively recovering and reusing the heat. This not only avoids heat waste but also reduces the temperature of the steamed water to a reasonable level, facilitating subsequent use and processing. This efficient energy utilization not only improves the energy efficiency of the entire production process but also reduces energy consumption and environmental pollution, aligning with the principles of green production and sustainable development.

[0056] In some specific embodiments, the exhaust assembly 300 includes an exhaust pipe 310, which is arranged above the main body 100. The exhaust pipe 310 is connected to the drying chamber 110, and the water vapor in the drying chamber 110 can be discharged to the atmosphere through the exhaust pipe 310.

[0057] In some specific embodiments, an exhaust pump 320 is provided on the exhaust pipe 310 to improve the exhaust efficiency of water vapor in the drying chamber 110 .

[0058] In some specific embodiments, an electric control valve 131 is provided at the mud outlet 130 to facilitate automatic opening and closing or remote control of the mud outlet 130, thereby avoiding direct contact by workers and improving the safety of use of this embodiment.

[0059] In some specific embodiments, a cleaning port communicating with the drying chamber 110 is provided above the main body 100 , and a cleaning door 150 is provided on the cleaning port to facilitate workers to regularly clean and maintain the drying chamber 110 .

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0061] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A sludge treatment equipment, characterized in that: include: A main body (100), wherein a drying chamber (110) is provided in the main body (100), and a mud inlet (120) and a mud outlet (130) are respectively provided on the main body (100) and communicate with the drying chamber (110), wherein the mud inlet (120) is located above the main body (100), and the mud outlet (130) is located below a side wall of the main body (100); A drying jacket (200) is provided on the main body (100), wherein the drying jacket (200) is provided with a first heating chamber, and the first heating chamber is arranged outside the drying chamber (110); An exhaust assembly (300) is arranged above the main body (100) and is used to discharge water vapor from the drying chamber (110).

2. The sludge treatment equipment according to claim 1, characterized in that: The first heating chamber has a first water inlet (210) and a first water outlet (220); the first water inlet (210) is connected to the water supply port (410) of the water supply device (400) via a water pipe (430); and the first water outlet (220) is connected to the water return port (420) of the water supply device (400) via a water pipe (430).

3. The sludge treatment equipment according to claim 2, characterized in that: The first water inlet (210) is located below the first heating chamber, and the first water outlet (220) is located above the first heating chamber.

4. The sludge treatment equipment according to claim 1, characterized in that: A stirring shaft (510) is horizontally provided in the drying chamber (110), stirring blades (520) are evenly distributed around the stirring shaft (510), and a driving motor (140) is provided on the main body (100), and the driving motor (140) is in transmission cooperation with the stirring shaft (510).

5. The sludge treatment equipment according to claim 4, characterized in that: The stirring blade (520) is spirally arranged relative to the axis of the stirring shaft (510), and the rotation of the stirring shaft (510) can drive the stirring blade (520) to rotate and push the sludge in the drying chamber (110) to move toward the sludge outlet (130).

6. The sludge treatment equipment according to claim 4, characterized in that: The stirring shaft (510) and the stirring blade (520) are both provided with a cavity loop, and the cavity loop in the stirring shaft (510) and the cavity loop in the stirring blade (520) are interconnected to form a second heating chamber (530). The end of the stirring shaft (510) away from the driving motor (140) is provided with a communicating vessel (540), and the communicating vessel (540) is provided with a second water inlet (541) and a second water outlet (542) that are connected to the second heating chamber (530). The second water inlet (541) is connected to the water supply port (410) of the water supply device (400) through a water pipe (430), and the second water outlet (542) is connected to the return water port (420) of the water supply device (400) through a water pipe (430).

7. The sludge treatment equipment according to claim 1, characterized in that: The exhaust assembly (300) comprises an exhaust pipe (310), the exhaust pipe (310) is arranged above the main body (100), and the exhaust pipe (310) is communicated with the drying chamber (110).

8. The sludge treatment equipment according to claim 7, characterized in that: An exhaust pump (320) is provided on the exhaust pipe (310).

9. The sludge treatment equipment according to any one of claims 1 to 8, characterized in that: An electric control valve (131) is provided at the mud outlet (130).

10. The sludge treatment equipment according to any one of claims 1 to 8, characterized in that: A cleaning port communicating with the drying chamber (110) is provided above the main body (100), and a cleaning door (150) is provided on the cleaning port.

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