Sewage pump water inlet base

Abstract

This utility model provides a sewage pump inlet base, belonging to the field of mechanical technology. It solves the problem of poor user experience in existing bases. The sewage pump inlet base includes a base plate and a roughly L-shaped bent pipe fixed to the base plate. An inspection port is provided on the left side of the middle of the bent pipe, and the bent pipe extends outward from the inspection port to form a ring. The axis of the ring is horizontal. A cover plate is detachably fixed to the left end of the ring, and the cover plate is coaxial with the ring, covering the left end of the ring. The right side of the cover plate extends into the ring to form a cylinder. The outer wall of the right end of the cylinder forms a seal with the inner wall of the ring through a sealing ring, which is located near the right end face of the cylinder. The cover plate can move axially along the ring to allow the cylinder to fully extend out of the ring. This sewage pump inlet base provides a good user experience.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a sewage pump, particularly a sewage pump inlet base. Background Technology

[0002] Sewage pumps are a type of centrifugal impurity pump, mainly used for transporting urban sewage. Because the medium being transported often contains easily entangled or bundled fibrous materials, the sewage pump flow channel is prone to blockage. Once blocked, the sewage pump will malfunction and may even burn out the motor, resulting in poor sewage discharge.

[0003] An existing sewage pump structure, such as the vertical sewage pump disclosed in the Chinese Patent Database (application number: 201920367945.5), includes a pump body and an impeller located within the pump body. The pump body has a cutting disc coaxially connected to the impeller at its inlet. The inlet of the pump body is also connected to a bend. The bend has an inspection port on its side wall near the inlet, communicating with the inner cavity of the bend. A side cover for closing the inspection port is hinged to the inspection port. A latch is located on the outer side wall of the inspection port. Two spaced-apart support rods are located on the outer end face of the side cover. An eccentric cam abuts against the side cover between the two support rods. The eccentric cam is rotatably connected to the two support rods and can move relative to the support rods along the axial direction of the side cover. A latch is also hinged to the eccentric cam for engaging with the latch. The eccentric cam also has a handle for driving its rotation.

[0004] When overhauling the aforementioned sewage pump, the side cover is opened to remove the sludge from the bend. In actual use, due to factors such as backflow of high-level water in the pipe network or poor location of the maintenance port, there will be a certain pressure inside the bend. When the side cover is opened, sewage may spray out, which can easily soil users and the environment, affecting the user experience. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a sewage pump inlet base that can prevent water from spraying out when the cover plate is removed.

[0006] The objective of this utility model can be achieved through the following technical solution: A sewage pump inlet base includes a base plate and a generally L-shaped bent pipe fixed on the base plate. An inspection port is provided on the left side of the middle of the bent pipe, and the bent pipe extends outward from the inspection port to form a ring. The ring's axis is horizontally oriented. A cover plate is detachably fixed to the left end of the ring, and the cover plate is coaxial with the ring, covering the left end of the ring. A cylinder extends inward from the right side of the cover plate into the ring, and the cylinder and cover plate are coaxial. A seal is formed between the outer wall of the right end of the cylinder and the inner wall of the ring through a sealing ring, and the sealing ring is positioned close to the right end face of the cylinder. The cover plate can move axially along the ring to allow the cylinder to fully extend out of the ring.

[0007] When sewage pumps are in use, if sewage blocks the bend, first remove the cover plate, then reach into the bend through the ring to remove the sewage. After removing the sewage, simply reinstall the cover plate.

[0008] The cylindrical body formed on the cover plate can move within the ring, and the right end of the cylindrical body is sealed to the ring through a sealing ring. When the cover plate is pulled to the left to separate it from the ring, the volume of the chamber formed by the cylindrical body and the ring will increase, so as to quickly relieve the pressure in the bend. This can effectively prevent water from spraying when the cover plate is removed, resulting in a better user experience.

[0009] In the aforementioned sewage pump inlet base, the cover plate is attached to the left end face of the ring body. A ring-shaped positioning groove is also formed on the left end face of the ring body, and the positioning groove and the ring body are coaxially arranged. A ring-shaped sealing gasket is provided inside the positioning groove, and the two end faces of the sealing gasket respectively contact and seal with the bottom wall of the positioning groove and the right side face of the cover plate. With the combined action of the sealing gasket and the sealing ring, the sealing path formed between the cover plate and the ring body is effectively extended, enhancing the leak-proof effect.

[0010] In the aforementioned sewage pump inlet base, the cover plate is threadedly connected to the ring body at the left end of the cylinder to facilitate the installation and removal of the cover plate.

[0011] In the aforementioned sewage pump inlet base, a handle is fixed in the middle of the left side of the cover plate to provide a gripping position, making it convenient to rotate the cover plate for disassembly and assembly.

[0012] In the aforementioned sewage pump inlet base, the cylinder consists of a left cylinder section and a right cylinder section continuously distributed along the axial direction of the cover plate. The left cylinder section is threadedly connected to the ring body, and the aforementioned sealing ring is located on the right cylinder section. The thickness of the left cylinder section is greater than that of the right cylinder section. This design, while ensuring stable positioning of the cover plate, also reduces material input and lowers costs.

[0013] In the aforementioned sewage pump inlet base, the axial cross-section of the positioning groove is L-shaped, and the inner wall of the sealing gasket contacts and seals with the outer wall of the cylinder to further enhance the sealing performance.

[0014] Compared with existing technologies, the inlet base of this sewage pump has the following advantages: 1. The cylindrical body formed on the cover plate can move within the ring, and the right end of the cylindrical body forms a seal with the ring through a sealing ring. When the cover plate is pulled to the left to separate it from the ring, the volume of the chamber formed by the cylindrical body and the ring will increase, so as to quickly relieve the pressure in the bend. This can effectively prevent water from spraying when the cover plate is removed, resulting in a better user experience.

[0015] 2. The thickness of the left cylinder is greater than that of the right cylinder. Under the premise of stabilizing the cover plate, the material input can be reduced and the cost can be lowered. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the inlet base of the sewage pump.

[0017] Figure 2 This is a cross-sectional schematic diagram of the inlet base of the sewage pump.

[0018] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0019] In the diagram, 1 is the base plate; 2 is the bend; 2a is the ring flange; 2b is the inspection port; 3 is the ring body; 4 is the cover plate; 4a is the cylinder body; 4a1 is the left cylinder section; 4a2 is the right cylinder section; 5 is the sealing ring; 6 is the sealing gasket; 7 is the handle; 8 is the first support plate; and 9 is the second support plate. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] Example 1: As Figure 1 and Figure 2 As shown, the sewage pump inlet base is a one-piece structure, preferably a cast integral part. The sewage pump inlet base includes a base plate 1 and a roughly L-shaped bend 2 fixed to the base plate 1, with the bend 2 arranged vertically. Both the upper and lower ends of the bend 2 are formed with annular flanges 2a, wherein the axis of the upper annular flange 2a is vertically arranged; the axis of the lower annular flange 2a is horizontally arranged; a maintenance port 2b is provided on the left side of the middle of the bend 2, and the bend 2 extends outward from the maintenance port 2b to form a ring 3, with the axis of the ring 3 being horizontally arranged.

[0022] Specifically A cover plate 4 is detachably fixed to the left end of the ring body 3. The cover plate 4 and the ring body 3 are coaxially arranged, with the cover plate 4 located on the left side of the ring body 3 and covering the left end of the ring body 3. The right side of the cover plate 4 extends into the ring body 3 to form a cylinder 4. The cylinder 4 and the cover plate 4 are coaxially arranged. The outer wall of the right end of the cylinder 4 forms a seal with the inner wall of the ring body 3 through a sealing ring 5, and the sealing ring 5 is located close to the right end face of the cylinder 4. The cover plate 4 can move axially along the ring body 3 so that the cylinder 4 completely extends out of the ring body 3. In the actual product, the cover plate 4 and the cylinder 4a are an integral structure.

[0023] When the sewage pump is in use, if the sewage blocks the bend 2, first remove the cover plate 4, then reach into the bend 2 through the ring body 3 to remove the sewage. After removing the sewage, reinstall the cover plate 4.

[0024] The cylindrical body 4 formed on the cover plate 4 can move inside the ring body 3, and the right end of the cylindrical body 4 forms a seal with the ring body 3 through the sealing ring 5. When the cover plate 4 is pulled to the left to separate it from the ring body 3, the volume of the cavity formed by the cylindrical body 4 and the ring body 3 will become larger and larger, so as to quickly relieve the pressure in the bend 2. This can effectively prevent water from spraying when the cover plate 4 is removed, resulting in a better user experience.

[0025] To further explain, such as Figure 2 and Figure 3 As shown, the cover plate 4 is attached to the left end face of the ring body 3. A ring-shaped positioning groove is also formed on the left end face of the ring body 3, and the positioning groove and the ring body 3 are coaxially arranged. A ring-shaped sealing gasket 6 is provided inside the positioning groove, and the two end faces of the sealing gasket 6 contact and seal with the bottom wall of the positioning groove and the right side face of the cover plate 4, respectively. With the combined action of the sealing gasket 6 and the sealing ring 5, the sealing path formed between the cover plate 4 and the ring body 3 is effectively extended, enhancing the leak-proof effect. Preferably, the axial cross-section of the positioning groove is L-shaped, and the inner wall of the sealing gasket 6 contacts and seals with the outer wall of the cylinder 4a to further enhance the sealing performance.

[0026] In this embodiment, The cover plate 4 is threaded to the ring 3 at the left end of the cylinder 4a to convert the rotational motion into linear motion of the cover plate 4, facilitating the installation and removal of the cover plate 4. Further, a handle 7 is fixed to the center of the left side of the cover plate 4 to provide a gripping position, facilitating the rotation of the cover plate 4 for installation and removal. Preferably, the handle 7 is U-shaped.

[0027] like Figure 2 and Figure 3 As shown, the specific structure of the cylinder 4a is as follows: the cylinder 4a consists of a left cylinder portion 4a1 and a right cylinder portion 4a2 continuously distributed along the axial direction of the cover plate 4. The left cylinder portion 4a1 is threadedly connected to the ring body 3, and the sealing ring 5 is disposed on the right cylinder portion 4a2. Furthermore, the thickness of the left cylinder portion 4a1 is greater than the thickness of the right cylinder portion 4a2. This design, while ensuring stable positioning of the cover plate 4, also reduces material input and lowers costs.

[0028] The sealing ring 5 is installed as follows: the outer diameter of the right cylinder 4a2 is smaller than the inner diameter of the ring 3. An annular mounting groove is provided on the outer side wall of the right cylinder 4a2. The sealing ring 5 is located in the mounting groove, and the inner and outer side walls of the sealing ring 5 are in contact with the inner wall of the mounting groove and the outer wall of the ring 3 respectively for sealing.

[0029] In the actual product, support plate 1 and support plate 2 are vertically formed on the base plate 1. The upper end of support plate 1 extends to the outer wall of the bend 2 to support the bend 2; the upper end of support plate 2 extends to the ring 3 to support the ring 3. To further explain, there are two support plates 1 and they are distributed along the axial direction of the ring 3. One support plate 1 is located between support plate 2 and the other support plate 1, and support plate 2 is perpendicular to support plate 1.

[0030] Example 2: The structure and principle of Example 2 are basically the same as those of Example 1, except that: a ring of through holes runs axially through the cover plate 4, and threaded holes are axially opened on the left end face of the ring body 3. The number of threaded holes and through holes are the same and their positions correspond one-to-one. A screw is inserted into each through hole, and the screw shank is screwed into the corresponding threaded hole. The screw head is pressed against the left end face of the cover plate 4 to achieve a detachable connection between the cover plate 4 and the ring body 3.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A sewage pump inlet base, comprising a base plate (1) and a generally L-shaped bent pipe (2) fixed on the base plate (1), wherein an inspection port (2b) is provided on the left side of the middle part of the bent pipe (2), and the bent pipe (2) extends outward from the inspection port (2b) to form a ring (3), characterized in that, The ring body (3) is horizontally oriented. A cover plate (4) is detachably fixed to the left end of the ring body (3). The cover plate (4) and the ring body (3) are coaxially oriented, and the cover plate (4) covers the left end of the ring body (3). The right side of the cover plate (4) extends into the ring body (3) to form a cylinder (4a). The cylinder (4a) and the cover plate (4) are coaxially oriented. The outer wall of the right end of the cylinder (4a) is sealed to the inner wall of the ring body (3) through a sealing ring (5). The sealing ring (5) is positioned close to the right end face of the cylinder (4a). The cover plate (4) can move along the axial direction of the ring body (3) so that the cylinder (4a) extends completely out of the ring body (3).

2. The sewage pump inlet base according to claim 1, characterized in that, The cover plate (4) is attached to the left end face of the ring body (3). A ring-shaped positioning groove is also provided on the left end face of the ring body (3). The positioning groove and the ring body (3) are coaxially arranged. A ring-shaped sealing gasket (6) is provided in the positioning groove. The two ends of the sealing gasket (6) are in contact with the bottom wall of the positioning groove and the right side of the cover plate (4) respectively.

3. The sewage pump inlet base according to claim 1 or 2, characterized in that, The cover plate (4) is threaded to the ring (3) through the left end of the cylinder (4a).

4. The sewage pump inlet base according to claim 3, characterized in that, A handle (7) is fixed to the middle of the left side of the cover plate (4).

5. The sewage pump inlet base according to claim 3, characterized in that, The cylinder (4a) is composed of a left cylinder (4a1) and a right cylinder (4a2) that are continuously distributed along the axial direction of the cover plate (4). The left cylinder (4a1) is threadedly connected to the ring (3). The sealing ring (5) is provided on the right cylinder (4a2), and the thickness of the left cylinder (4a1) is greater than the thickness of the right cylinder (4a2).

6. The sewage pump inlet base according to claim 2, characterized in that, The axial section of the positioning groove is L-shaped, and the inner wall of the sealing gasket (6) is in contact with the outer wall of the cylinder (4a) for sealing.

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