Positive and negative pressure drainage barrel

Abstract

The utility model relates to drainage device technical field, concretely relates to a positive and negative pressure drainage bucket, including bucket body, water inlet pipe, water outlet pipe, fixed structure and sleeve, water inlet pipe is located in the bucket body and is located the upper end in the bucket body for to the drainage in the bucket body, the quantity of water inlet pipe is multiple, the water outlet pipe is fixed in the bottom of bucket body, the upper end of water outlet pipe is located in the bucket body and the top end of water outlet pipe is higher than each water inlet pipe's lower extreme, the lower extreme of water outlet pipe is communicated the outside of bucket body, the sleeve is the closed top and the open mouth downward cylinder structure, the sleeve is set up and is installed on the water outlet pipe through the fixed structure, the lower extreme of sleeve is lower than each drain pipe's lower extreme, this drainage bucket can prevent the outside air and the gas in air treatment equipment intermix, has reduced equipment's installation cost simultaneously, through setting up the sleeve on the water outlet pipe can prevent the sundries that the drainage pipeline inside discharged flows into the water outlet pipe, and further can avoid the water outlet pipe blockage, also has reduced the maintenance difficulty of positive and negative pressure drainage bucket.

Description

Technical Field

[0001] This utility model relates to the field of drainage device technology, specifically to a positive and negative pressure drainage bucket. Background Technology

[0002] A modular air handling unit is a device that handles air purification, temperature, humidity, and other performance aspects. It consists of multiple functional sections, including an air inlet section, a filtration section, a heating section, a cooling section, a humidification section, a fan motor section, and a diffuser section. Some of these functional sections generate water, such as condensate from the cooling section, and some sections require regular water washing and cleaning, which also generates water. This water needs to be discharged periodically.

[0003] When an air handling unit drains water under different operating conditions, its drain outlet may be under positive or negative pressure. When the drain outlet is under negative pressure, outside air and contaminants may be drawn into the unit through the drain pipe. When the drain outlet is under positive pressure, clean air inside the equipment may leak. Current solutions to this problem involve installing a sealing device at each drain outlet. This device is typically a water trap or a positive / negative pressure drain valve, which uses the static pressure of water to balance the internal and external pressure differences, preventing internal gas leakage or external gas entry.

[0004] However, the above methods still have certain drawbacks: existing combined air handling units often have a large number of drain outlets, and installing water traps or positive and negative pressure drain valves on each drain outlet may increase the cost of the sealing device and cause unreasonable space occupation; in addition, in order to ensure normal drainage of the drain outlets and prevent water traps or valve bodies from being blocked or contaminated, each drain valve and water trap needs to be inspected and maintained regularly, and water traps or positive and negative pressure drain valves are difficult to clean. Too many water traps or positive and negative pressure drain valves will increase the workload of operators and reduce maintenance efficiency.

[0005] Therefore, a positive and negative pressure drainage tank is needed to ensure the normal drainage of air handling equipment while reducing the cost and maintenance difficulty of the sealing device. Utility Model Content

[0006] This invention provides a positive and negative pressure drainage tank, which can ensure the normal drainage of air handling equipment and reduce the cost and maintenance difficulty of the sealing device.

[0007] To solve the above problems, the present invention provides a positive and negative pressure drainage tank with the following technical solution:

[0008] A positive and negative pressure drainage tank includes a tank body, an inlet pipe, an outlet pipe, a fixing structure, and a sleeve. The inlet pipe is located inside the tank body and at the top of the tank body, and is used to drain water into the tank body. There are multiple inlet pipes. The outlet pipe is fixed to the bottom of the tank body, with its upper end inside the tank body and its top end higher than the lower ends of each inlet pipe. The lower end of the outlet pipe connects to the outside of the tank body. The sleeve is a cylindrical structure with a closed top and an opening facing downwards. The sleeve is fitted onto the outlet pipe through the fixing structure, and the lower end of the sleeve is lower than the lower ends of each drain pipe.

[0009] This utility model discloses a positive and negative pressure drainage tank. By setting up a tank body connected to each drainage pipe, the positive or negative pressure in each drainage pipe can be automatically balanced by the static pressure of the water in the tank body. This allows for normal drainage of the positive and negative pressure pipes while preventing the mixing of outside air and gases from the air handling equipment. Compared to installing positive and negative pressure drainage valves on each drainage pipe, this drainage tank reduces the installation cost of the equipment. In addition, by using a sleeve on the outlet pipe, it can prevent debris discharged from the drainage pipe from flowing into the outlet pipe, thereby avoiding blockage of the outlet pipe. At the same time, the debris accumulated in the tank body is easier to clean, reducing the maintenance difficulty of the positive and negative pressure drainage tank.

[0010] Furthermore, the fixing structure includes a support plate, a nut, and a screw. The support plate is fixed to the top of the water outlet pipe and has a through hole for the screw to pass through. The nut is welded to the lower side of the support plate and is coaxial with the through hole. The screw is welded to the top of the sleeve in the vertical direction and passes through the nut so that the sleeve can move up and down on the water outlet pipe.

[0011] Furthermore, the top of the sleeve has a handle for the operator to apply force to rotate the sleeve.

[0012] Furthermore, the positive and negative pressure drainage tank also includes a tank cover, and a tank flange is horizontally welded to the upper end of the tank body. The tank cover is installed on the tank flange by bolts.

[0013] Furthermore, the bucket lid includes a fixed plate and a movable plate, both of which are semi-circular plates. The straight edge of the movable plate is hinged to the straight edge of the fixed plate. The fixed plate is fixed to the flange of the bucket body. The movable plate can be opened and closed around the hinge axis. The movable plate has multiple vent holes.

[0014] Furthermore, the fixing plate has multiple connectors, the upper end of which is used to connect to an external pipe, and the lower end of which is used to install a water inlet pipe.

[0015] Furthermore, the lower end of the water outlet pipe has threads to facilitate connection to an external pipe.

[0016] The beneficial effects of the positive and negative pressure drainage bucket provided by this utility model are:

[0017] 1. This utility model discloses a positive and negative pressure drainage tank. By setting up a tank body connected to each drainage pipe, the positive or negative pressure in each drainage pipe can be automatically balanced by the static pressure of the water in the tank body. This allows for normal drainage from the positive and negative pressure pipes while preventing the mixing of outside air and gases from the air handling equipment. Compared to installing positive and negative pressure drainage valves on each drainage pipe, this drainage tank reduces the installation cost of the equipment. In addition, by using a sleeve on the outlet pipe, it can prevent debris discharged from the drainage pipe from flowing into the outlet pipe, thereby avoiding blockage of the outlet pipe. At the same time, the debris accumulated in the tank body is easier to clean, reducing the maintenance difficulty of the positive and negative pressure drainage tank.

[0018] 2. By installing a hinged movable plate at the top of the tank, operators can open the movable plate to check the working status of the positive and negative pressure drainage tank or clean up debris, thus improving the convenience of maintenance of the positive and negative pressure drainage tank. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a positive and negative pressure drainage tank provided by this utility model;

[0020] Figure 2 A front view of a positive and negative pressure drainage tank provided by this utility model;

[0021] Figure 3 A top view of a positive and negative pressure drainage bucket provided by this utility model;

[0022] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Barrel body; 11. Barrel body flange; 12. Fixing hole; 2. Inlet pipe; 3. Outlet pipe; 4. Sleeve; 41. Handle; 5. Fixing structure; 51. Support plate; 52. Nut; 53. Screw; 6. Barrel lid; 61. Fixing plate; 62. Connector; 63. Movable plate; 64. Vent hole. Detailed Implementation

[0025] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0026] Embodiment 1 of the positive and negative pressure drainage tank provided by this utility model:

[0027] like Figures 1 to 4As shown, a positive and negative pressure drainage tank includes a tank body 1, an inlet pipe 2, an outlet pipe 3, a sleeve 4, a fixing structure 5, and a tank cover 6. Both the inlet pipe 2 and the outlet pipe 3 are located inside the tank body 1. The inlet pipe 2 is used to connect to the positive or negative pressure drainage pipe of an air handling equipment to drain water into the tank body 1. The outlet pipe 3 is used to discharge wastewater accumulated inside the tank body 1. The sleeve 4 is fitted onto the outlet pipe 3 to prevent debris from entering the outlet pipe 3. The fixing structure 5 is used to movably connect the sleeve 4 and the outlet pipe 3.

[0028] The following section will first introduce barrel 1, such as... Figures 1 to 3 As shown, the barrel body 1 is a cylindrical barrel made of stainless steel. An annular flange 11 is welded to the upper end of the barrel body 1, i.e., the barrel opening. The inner diameter of the flange 11 is smaller than the diameter of the barrel body 1, while its outer diameter is larger than the diameter of the barrel body 1. Multiple fixing holes 12 are evenly distributed around the outer circumference of the flange 11, used to fix the barrel body 1 to the external base structure. Multiple bolts are arranged in a circular pattern on the inner side of the flange 11, used to fix the barrel lid 6.

[0029] like Figure 2 and Figure 3 As shown, the barrel lid 6 includes a fixed plate 61 and a movable plate 63. Both the fixed plate 61 and the movable plate 63 are semi-circular plates. The fixed plate 61 is coaxially mounted on the inner side of the barrel flange 11 by bolts. The straight edge of the movable plate 63 is hinged to the straight edge of the fixed plate 61 by a hinge, so that the movable plate 63 can open and close up and down around the hinge axis on the hinge. A locking screw is provided on the opposite side of the straight edge of the movable plate 63 for fixing the movable plate 63 to the barrel flange 11. The movable plate 63 also has multiple vent holes 64 to balance the atmospheric pressure inside and outside the barrel 1. According to the number of drainage pipes of the air handling equipment, a corresponding number of connectors 62 are welded to the fixed plate 61. The connectors 62 are double-ended threads that extend in the vertical direction and are welded to the fixed plate 61 in the middle. The upper end of the connector 62 is used to connect to the various drainage pipes of the air handling equipment, and the lower end of the connector 62 is used to connect to the water inlet pipe 2.

[0030] The inlet pipes 2 extend vertically, and their number matches the number of connectors 62. The upper end of the inlet pipe 2 is threaded onto the lower end of the connector 62. The outlet pipe 3 extends vertically and is fixed to the lower end of the tank body 1. The bottom of the outlet pipe 3 is located on the outside of the tank body 1 and is used for draining water. The outer surface of the bottom of the outlet pipe 3 has threads to facilitate connection with an external drainage pipe. The bottom of each inlet pipe 2 is lower than the top of the outlet pipe 3, so that the inlet pipe 2 can always be sealed by the water inside the tank body 1. This allows the static pressure of the water inside the tank body 1 to balance the positive or negative pressure in the pipes, ensuring the purity of the gas inside the air handling equipment.

[0031] like Figure 2and Figure 4 As shown, the sleeve 4 is a cylindrical structure made of stainless steel. The top of the sleeve 4 is closed. The sleeve 4 is fitted onto the outlet pipe 3 via a fixing structure 5. The fixing structure 5 includes a support plate 51, a nut 52, and a screw 53. The support plate 51 is a rectangular stainless steel plate, horizontally welded to the top of the outlet pipe 3. The support plate 51 has a vertically extending through hole in its center. A nut 52 is welded to the lower side of the support plate 51 corresponding to the through hole, and the screw hole of the nut 52 is vertically connected to the through hole. The screw 53 extends vertically and is welded to the inside of the sleeve 4, located at the top of the sleeve 4. The sleeve 4 is screwed onto the nut 52 via the screw 53. The upper end of the sleeve 4 has a handle 41 for the operator to apply force, enabling the installation of the sleeve 4 and adjustment of its height. Furthermore, the bottom of the sleeve 4 is lower than the bottom of each inlet pipe 2, preventing debris from entering the outlet pipe 3 when it flows out of the inlet pipe 2.

[0032] The working principle of a positive and negative pressure drainage tank is summarized as follows:

[0033] First, water is poured into the tank 1 until the water level covers the bottom of the inlet pipe 2 and is close to the top of the outlet pipe 3. During operation, the air handling unit will maintain either positive or negative pressure in the inlet pipe 2. In a positive pressure state, the water level in the inlet pipe 2 will drop by a certain height; in a negative pressure state, the water level will rise by a certain height to balance the pressure within the pipe. As water is continuously drained from the inlet pipe 2, the water level in the tank 1 will gradually rise to the top of the outlet pipe 3 and be discharged out of the tank 1 through the outlet pipe 3. A sleeve 4 is fitted over the outside of the outlet pipe 3 to prevent floating debris from entering the outlet pipe 3. Simultaneously, opening the tank lid 6 allows operators to clean the debris from inside the tank 1.

[0034] Embodiment 2 of the positive and negative pressure drainage tank provided by this utility model:

[0035] Its main difference from Example 1 is:

[0036] In Example 1, the fixing structure includes a support plate, a screw, and a nut.

[0037] In this embodiment, the fixing structure includes a horizontal cross located inside the sleeve and welded to the side wall of the sleeve, and the sleeve is installed at the top of the water outlet pipe via the cross.

[0038] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0039] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A positive and negative pressure drainage tank, characterized in that, The device includes a barrel body, inlet pipes, outlet pipes, a fixing structure, and a sleeve. The inlet pipes are located inside the barrel body and at the top of the barrel body, and are used to drain water into the barrel body. There are multiple inlet pipes. The outlet pipes are fixed to the bottom of the barrel body, with the top of the outlet pipe inside the barrel body and the top of the outlet pipe being higher than the bottom of each inlet pipe. The bottom of the outlet pipe is connected to the outside of the barrel body. The sleeve is a cylindrical structure with a closed top and an opening facing downwards. The sleeve is fitted onto the outlet pipe through the fixing structure, and the bottom of the sleeve is lower than the bottom of each drain pipe.

2. The positive and negative pressure drainage tank according to claim 1, characterized in that, The fixing structure includes a support plate, a nut, and a screw. The support plate is fixed to the top of the water outlet pipe and has a through hole for the screw to pass through. The nut is welded to the lower side of the support plate and is coaxial with the through hole. The screw is welded to the top of the sleeve in the vertical direction and passes through the nut so that the sleeve can move up and down on the water outlet pipe.

3. A positive and negative pressure drainage tank according to claim 2, characterized in that, The top of the sleeve has a handle for the operator to apply force to rotate the sleeve.

4. A positive and negative pressure drainage tank according to claim 1, characterized in that, The positive and negative pressure drainage tank also includes a tank cover, and a tank flange is horizontally welded to the upper end of the tank body. The tank cover is installed on the tank flange by bolts.

5. A positive and negative pressure drainage tank according to claim 4, characterized in that, The bucket lid includes a fixed plate and a movable plate, both of which are semi-circular plates. The straight edge of the movable plate is hinged to the straight edge of the fixed plate. The fixed plate is fixed to the flange of the bucket body. The movable plate can be opened and closed around the hinge axis. The movable plate has multiple vent holes.

6. A positive and negative pressure drainage tank according to claim 5, characterized in that, The fixing plate has multiple connectors, the upper end of which is used to connect to an external pipe, and the lower end of which is used to install a water inlet pipe.

7. A positive and negative pressure drainage tank according to claim 2, characterized in that, The lower end of the water outlet pipe has threads to facilitate connection to an external pipe.

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