Submerged water pump drainage pipe structure

Abstract

The utility model provides a drain pipe structure of a submerged pump, and belongs to the technical field of water pumps. The submerged pump solves the problem that an existing submerged pump is not stable in structure. The submerged water pump comprises a pump body and a bottom plate horizontally arranged above the pump body, the drainage pipe structure comprises a water guide pipe arranged on one side of the pump body and a drainage cylinder vertically arranged above the water guide pipe, and the lower end of the water guide pipe is communicated with a water outlet of the pump body. A lower sealing seat and an upper sealing seat are respectively arranged on the outer wall of the upper end of the water guide pipe and the outer wall of the lower end of the drainage cylinder, and are annular; the upper sealing seat and the lower sealing seat are both tightly pressed on the bottom plate, the upper sealing seat and the lower sealing seat are fixed together through a circle of bolts, the upper sealing seat and the lower sealing seat are both sealed with the bottom plate through sealing rings, and a water guide hole enabling the drainage cylinder and the water guide pipe to be communicated is vertically formed in the bottom plate in a penetrating mode. The submerged water pump drainage pipe structure is stable in structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water pump technical field relates to a liquid under water pump, especially a liquid under water pump drain pipe structure. BACKGROUND

[0002] The liquid under water pump is also called vertical liquid under water pump or liquid under water sewage pump, and is a positive pressure conveying vertical pump, which can effectively solve the problems of air resistance and cavitation.

[0003] The structure of the existing liquid under water pump is disclosed in a liquid under water pump (application number: 201010004442.5) of China patent library, which comprises a pump head part, a magnetic drive device part, an outer shaft part, a transmission shaft part, a liquid conveying device part and a motor part; wherein the liquid conveying device comprises a liquid outlet flange, a fastening bolt, a sealing gasket, a liquid outlet pipe, a bolt and a nut; wherein: the liquid outlet flange is fixed on the bottom plate of the liquid under water pump through the fastening bolt; there is a sealing gasket between the liquid outlet flange and the bottom plate; the liquid outlet pipe is in the shape of "L"; the liquid outlet flange is connected with the liquid outlet pipe; and the liquid outlet pipe is connected with the pump head through the bolt and the nut.

[0004] In the above armpit pump, the lower end of the liquid outlet flange is sleeved on the liquid outlet pipe, so that the liquid outlet flange can be conveniently replaced to adapt to different working conditions during use, but this method has a problem: the liquid outlet pipe and the liquid outlet flange are usually sealed by a rubber ring, and since the liquid outlet pipe has a certain height, in order to prevent the upper end of the liquid outlet pipe from shaking due to the large water outlet pressure, the fitting gap between the liquid outlet pipe and the liquid outlet flange is generally small, which increases the pre-tightening force of the rubber ring, accelerates the aging of the rubber ring, causes sealing failure, and generates noise when the upper end of the liquid outlet pipe shakes during subsequent use. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a liquid under water pump drain pipe structure with stable structure.

[0006] The utility model can be realized by the following technical scheme: a liquid under water pump drain pipe structure, the liquid under water pump comprising a pump body and a bottom plate horizontally arranged above the pump body, the drain pipe structure comprising a water guide pipe arranged on one side of the pump body and a drain pipe vertically arranged above the water guide pipe, the lower end of the water guide pipe being communicated with the water outlet of the pump body, characterized in that the outer wall of the upper end of the water guide pipe and the outer wall of the lower end of the drain pipe are respectively provided with a lower sealing seat and an upper sealing seat, the upper sealing seat and the lower sealing seat are both annular and coaxially arranged with the drain pipe; the upper sealing seat and the lower sealing seat are pressed against the top surface and the bottom surface of the bottom plate respectively, the upper sealing seat and the lower sealing seat are detachably fixed together by a circle of vertically arranged bolts, and the shanks of the bolts pass through the bottom plate; the upper sealing seat and the lower sealing seat are both sealed with the bottom plate by sealing rings, and the bottom plate is vertically penetrated by a water guide hole for guiding the water in the drain pipe and the water guide pipe.

[0007] The bottom plate is clamped between the upper sealing seat and the lower sealing seat, and the three are fixed together by bolts, so that a stable and reliable hard connection is formed between the water guide pipe, the bottom plate and the drain pipe, thereby effectively enhancing the working stability and structural stability of the drain pipe structure.

[0008] In the above-mentioned under-water pump drain pipe structure, the water guide pipe includes a liquid inlet pipe and a liquid outlet pipe screwed on the outer upper end of the liquid inlet pipe, the lower end of the liquid inlet pipe is communicated with the water outlet of the pump body, a seal is formed between the liquid inlet pipe and the liquid outlet pipe by an O-ring, and the lower sealing seat is formed on the upper end of the liquid outlet pipe. The water guide pipe is divided into a threaded liquid inlet pipe and a threaded liquid outlet pipe, so that the height of the lower sealing seat can be adjusted by rotating the liquid outlet pipe, thereby reducing the processing and assembly difficulty.

[0009] In the above-mentioned under-water pump drain pipe structure, an annular groove for placing the O-ring is formed on the outer wall of the liquid inlet pipe, and the outer circumferential surface of the O-ring is in contact and sealed with the inner wall of the liquid outlet pipe. The above design has the advantages of simple structure, stable operation, etc.

[0010] In the above-mentioned under-water pump drain pipe structure, annular positioning grooves are formed on the adjacent end faces of the upper sealing seat and the lower sealing seat, two sealing rings are respectively located in the two positioning grooves, and the adjacent side faces of the two sealing rings are pressed tightly against the bottom plate, so that stable seals are formed between the upper sealing seat, the lower sealing seat and the bottom plate, thereby preventing water leakage.

[0011] In the above-mentioned under-water pump drain pipe structure, a plurality of connecting holes are vertically formed on the upper sealing seat, a plurality of through holes are vertically formed on the bottom plate, and a plurality of threaded holes are vertically formed on the lower sealing seat. The number of connecting holes, through holes and threaded holes is the same, and the positions of the connecting holes, through holes and threaded holes correspond one by one. The shank of each bolt passes through the corresponding connecting hole, the corresponding through hole and the corresponding threaded hole in sequence, and the head of the bolt is pressed against the top surface of the upper sealing seat.

[0012] Compared with the prior art, the under-water pump drain pipe structure has the following advantages:

[0013] 1. The bottom plate is clamped between the upper sealing seat and the lower sealing seat, and the three are fixed together by bolts, so that a stable and reliable hard connection is formed between the water guide pipe, the bottom plate and the drain pipe, thereby effectively enhancing the working stability and structural stability of the drain pipe structure.

[0014] 2. The water guide pipe is divided into a threaded liquid inlet pipe and a threaded liquid outlet pipe, so that the height of the lower sealing seat can be adjusted by rotating the liquid outlet pipe, thereby reducing the processing and assembly difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a cross-sectional view of an under-water pump.

[0016] Figure 2 isFigure 1 Enlarged schematic view at A in the figure.

[0017] In the figure, 1, pump body; 2, bottom plate; 2a, water guide hole; 3, water guide pipe; 3a, lower sealing seat; 3b, liquid inlet pipe; 3c, liquid outlet pipe; 4, drain pipe; 4a, upper sealing seat; 5, bolt; 6, sealing ring; 7, o-ring. DETAILED DESCRIPTION

[0018] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0019] As Figure 1 shown, in the submersible water pump drain pipe structure, the submersible water pump includes a pump body 1 and a bottom plate 2 horizontally arranged above the pump body 1; the drain pipe structure includes a water guide pipe 3 arranged on one side of the pump body 1 and a drain pipe 4 vertically arranged above the water guide pipe 3, wherein the upper end of the water guide pipe 3 is coaxially arranged with the drain pipe 4; the lower end of the water guide pipe 3 is fixedly connected to the pump body 1, and the lower end of the water guide pipe 3 is communicated with the water outlet of the pump body 1.

[0020] Specifically,

[0021] The outer wall of the upper end of the water guide pipe 3 and the outer wall of the lower end of the drain pipe 4 are respectively provided with a lower sealing seat 3a and an upper sealing seat 4a, and the upper sealing seat 4a and the lower sealing seat 3a are both annular structures and are coaxially arranged with the drain pipe 4. The upper sealing seat 4a and the lower sealing seat 3a are respectively pressed against the top surface and the bottom surface of the bottom plate 2, and the upper sealing seat 4a and the lower sealing seat 3a are detachably fixed together by a ring of vertically arranged bolts 5, and the shank of the bolt 5 passes through the bottom plate 2. The upper sealing seat 4a and the lower sealing seat 3a are both sealed with the bottom plate 2 by a sealing ring 6, and the bottom plate 2 is vertically penetrated by a water guide hole 2a for guiding the water from the drain pipe 4 to the water guide pipe 3, that is, at this time, the water guide hole 2a is communicated with the inner hole of the drain pipe 4 and the inner hole of the water guide pipe 3 at both ends.

[0022] The bottom plate 2 is clamped between the upper sealing seat 4a and the lower sealing seat 3a, and the three are fixed together by the bolt 5, so that a stable and reliable hard connection is formed between the water guide pipe 3, the bottom plate 2 and the drain pipe 4, thereby effectively enhancing the working stability and structural stability of the drain pipe structure.

[0023] Further explanation,

[0024] As Figure 1 and Figure 2As shown, the water guide pipe 3 comprises a liquid inlet pipe 3b and a liquid outlet pipe 3c, wherein the liquid outlet pipe 3c is vertically arranged, the lower end of the liquid outlet pipe 3c is screwed on the outer upper end of the liquid inlet pipe 3b, and the liquid inlet pipe 3b and the liquid outlet pipe 3c are sealed by an o-ring 7; the lower end of the liquid inlet pipe 3b is communicated with the water outlet of the pump body 1, and the lower sealing seat 3a is formed on the outer upper end of the liquid outlet pipe 3c. The water guide pipe 3 is divided into the liquid inlet pipe 3b and the liquid outlet pipe 3c which are connected by screwing, so that the height of the lower sealing seat 3a can be adjusted by rotating the liquid outlet pipe 3c, thereby reducing the processing and assembling difficulty.

[0025] In the embodiment,

[0026] The o-ring 7 is installed as follows: an annular groove for placing the o-ring 7 is formed on the outer wall of the upper end of the liquid inlet pipe 3b, and the outer circumferential surface of the o-ring 7 is in contact with the inner wall of the liquid outlet pipe 3c to seal. The above design has the advantages of simple structure and stable work.

[0027] The sealing ring 6 is installed as follows: the end faces of the upper sealing seat 4a and the lower sealing seat 3a adjacent to each other are provided with annular positioning grooves, and the two sealing rings 6 are respectively located in the two positioning grooves, and the adjacent side faces of the two sealing rings 6 are pressed tightly on the bottom plate 2, so that the upper sealing seat 4a and the lower sealing seat 3a are both stably sealed with the bottom plate 2 to prevent water leakage.

[0028] The bolt 5 is installed as follows: a plurality of connecting holes are vertically formed on the upper sealing seat 4a, a plurality of through holes are vertically formed on the bottom plate 2, and a plurality of threaded holes are vertically formed on the lower sealing seat 3a; the number of the connecting holes, the through holes and the threaded holes is the same as that of the bolts 5, and the positions of the connecting holes, the through holes and the threaded holes correspond to the positions of the bolts 5 one by one; the shanks of the bolts 5 pass through the corresponding connecting holes, the corresponding through holes and the corresponding threaded holes in sequence, and the heads of the bolts 5 are pressed tightly on the top surface of the upper sealing seat 4a.

[0029] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A structure of a drain pipe for a submersible water pump, the submersible water pump comprising a pump body (1) and a bottom plate (2) horizontally arranged above the pump body (1), the structure of the drain pipe comprising a water guide pipe (3) arranged at one side of the pump body (1) and a drain cylinder (4) vertically arranged above the water guide pipe (3), the lower end of the water guide pipe (3) being communicated with a water outlet of the pump body (1), characterized in that, The outer wall of the upper end of the water guide pipe (3) and the outer wall of the lower end of the drain cylinder (4) are respectively provided with a lower sealing seat (3a) and an upper sealing seat (4a), the upper sealing seat (4a) and the lower sealing seat (3a) are annular and coaxially arranged with the drain cylinder (4); the upper sealing seat (4a) and the lower sealing seat (3a) are pressed against the top surface and the bottom surface of the bottom plate (2) respectively, the upper sealing seat (4a) and the lower sealing seat (3a) are detachably fixed together through a ring of vertically arranged bolts (5), and the shank portions of the bolts (5) pass through the bottom plate (2); the upper sealing seat (4a) and the lower sealing seat (3a) are both sealed with the bottom plate (2) through sealing rings (6), and the bottom plate (2) is vertically penetrated by a water guide hole (2a) for guiding the water in the drain cylinder (4) and the water guide pipe (3).

2. The submersible water pump drain structure of claim 1, wherein, The water guide pipe (3) comprises a liquid inlet pipe (3b) and a liquid outlet pipe (3c) screwed on the outer upper end of the liquid inlet pipe (3b), the lower end of the liquid inlet pipe (3b) is communicated with the water outlet of the pump body (1), the liquid inlet pipe (3b) and the liquid outlet pipe (3c) are sealed by an o-ring (7), and the lower sealing seat (3a) is formed on the upper end of the liquid outlet pipe (3c).

3. The submersible water pump drain structure of claim 2, wherein, An annular groove for placing the o-ring (7) is formed on the outer wall of the liquid inlet pipe (3b), and the outer circumferential surface of the o-ring (7) is in contact with the inner wall of the liquid outlet pipe (3c) for sealing.

4. The submersible water pump drain structure of claim 1, wherein, The end surfaces adjacent to the upper sealing seat (4a) and the lower sealing seat (3a) are both provided with annular positioning grooves, and the two sealing rings (6) are respectively located in the two positioning grooves, and the adjacent side surfaces of the two sealing rings (6) are pressed against the bottom plate (2).

5. The submersible water pump drain structure of claim 1, wherein, A ring of connecting holes is vertically penetrated through the upper sealing seat (4a), a ring of through holes is vertically penetrated through the bottom plate (2), and a ring of threaded holes is vertically penetrated through the lower sealing seat (3a), the number of the connecting holes, the through holes, the threaded holes and the bolts (5) is the same, and the positions of the four are one-to-one corresponding, the shank portions of each bolt (5) pass through the corresponding connecting hole, the corresponding through hole and the corresponding threaded hole in sequence and are screwed into the corresponding threaded hole, and the head portion of the bolt (5) is pressed against the top surface of the upper sealing seat (4a).

Images