A high-sealing self-balancing multistage pump

Abstract

This utility model belongs to the field of multistage pump technology, specifically a high-sealing self-balancing multistage pump, including a pump body and an inlet pipe and an outlet pipe connected to the pump body. Both the inlet and outlet pipes are equipped with sealing components. Each sealing component includes a positioning mechanism located at the end of the inlet pipe and a sealing mechanism connected to the end of the positioning mechanism. The positioning mechanism includes a positioning groove at the end of the inlet pipe, a fixing ring fitted into the positioning groove, and a positioning tube fixed to the inner side of the fixing ring. The sealing mechanism includes a slot within the positioning tube. This utility model utilizes the sealing components so that during operation, water flows through the positioning tube, pushing the elastic plate to move. This causes the push plate to squeeze the sealing ring, and the sealing ring adheres tightly to the outer wall, achieving further sealing after pressurization during operation. This effectively prevents the medium from flowing to the connection point at the end of the inlet pipe, reducing the pressure at the connection point and improving service life.

Description

Technical Field

[0001] This utility model relates to the field of multistage pump technology, specifically a high-sealing self-balancing multistage pump. Background Technology

[0002] A multistage pump is a centrifugal pump in which the inlet and outlet sections and the middle section are connected by a tie rod. It can output a large water pressure and relies on the rotation of the impeller to obtain centrifugal force. When the gas density reaches the working range of the mechanical vacuum pump, it is drawn out, thereby gradually obtaining a high vacuum. The multistage pump achieves air intake, compression and exhaust by changing the pump chamber volume, so it is a variable volume centrifugal pump.

[0003] In existing multistage pumps, the output water pressure can be continuously increased through adjustment, which can lead to sealing problems in the connected inlet and outlet pipes. This not only causes media leakage but also affects the normal service life of the pipeline. Therefore, we propose a high-sealing self-balancing multistage pump. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A high-sealing self-balancing multistage pump includes a pump body and an inlet pipe and an outlet pipe connected to the pump body. Both the inlet pipe and the outlet pipe are equipped with sealing components. Each sealing component includes a positioning mechanism located at the end of the inlet pipe and a sealing mechanism connected to the end of the positioning mechanism. The positioning mechanism includes a positioning groove at the end of the inlet pipe, a fixing ring fitted into the positioning groove, and a positioning tube fixed to the inner side of the fixing ring. The sealing mechanism includes a slot in the positioning tube, a sealing ring plate fixed to the outer side of the slot, an opening on the side of the slot, a push plate placed in the slot, a connecting rod connected to the middle of the push plate, and an elastic piece connected to the end of the connecting rod and fixed to the inner side of the positioning tube.

[0007] In a preferred embodiment, the present invention can be further configured such that a sealing sleeve is provided on the outer side of the fixing ring.

[0008] In a preferred embodiment, the present invention can be further configured such that the end of the positioning tube is provided with an inclined groove.

[0009] In a preferred embodiment, the present invention can be further configured such that push blocks are installed on both sides of the push plate, and the push blocks are provided with grooves.

[0010] In a preferred embodiment, the present invention can be further configured such that sealing ribs are embedded on the sealing ring.

[0011] In a preferred embodiment, the present invention can be further configured such that the elastic sheet is inclined downward, and the positioning tube has a receiving groove located inside the elastic sheet.

[0012] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] 1. This utility model uses a sealing component. When the water flows through the positioning pipe during operation, it pushes the elastic plate to move, causing the push plate to squeeze the sealing ring. The sealing ring is tightly attached to the outer wall to achieve further sealing after pressurization during operation, effectively preventing the medium from flowing to the connection at the end of the water inlet pipe, reducing the pressure on the connection, and improving the service life.

[0014] 2. This utility model improves the sealing performance at the end of the water inlet pipe by setting a sealing sleeve on the outside of the fixing ring through the sealing component. At the same time, the push block can further increase the pressure of the sealing ring on the outer wall by squeezing the sealing rib, thereby further improving the sealing performance. Attached Figure Description

[0015] Figure 1 This is a front view of the high-sealing self-balancing multistage pump of this utility model;

[0016] Figure 2 This is an enlarged view of section A of the high-sealing self-balancing multistage pump of this utility model;

[0017] Figure 3 This is an enlarged view of section B of the high-sealing self-balancing multistage pump of this utility model.

[0018] Figure label:

[0019] 110. Pump body; 120. Inlet pipe; 130. Outlet pipe;

[0020] 200, Sealing assembly; 210, Positioning groove; 220, Retaining ring; 221, Sealing sleeve; 230, Positioning tube; 231, Inclined groove; 240, Slot; 250, Sealing ring piece; 251, Sealing rib; 260, Opening; 270, Push plate; 271, Push block; 272, Groove; 280, Connecting rod; 290, Elastic piece; 291, Receiving groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a high-sealing self-balancing multistage pump.

[0024] Combination Figure 1-3 As shown, the present invention provides a high-sealing self-balancing multistage pump, including a pump body 110 and an inlet pipe 120 and an outlet pipe 130 connected to the pump body 110. Both the inlet pipe 120 and the outlet pipe 130 are provided with sealing components 200.

[0025] The sealing assembly 200 includes a positioning mechanism disposed at the end of the water inlet pipe 120 and a sealing mechanism connected to the end of the positioning mechanism; the positioning mechanism includes a positioning groove 210 formed at the end of the water inlet pipe 120, a fixing ring 220 assembled in the positioning groove 210, and a positioning tube 230 fixed to the inner side of the fixing ring 220; the sealing mechanism includes a slot 240 formed in the positioning tube 230, a sealing ring 250 fixed to the outer side of the slot 240, an opening 260 formed on the side of the slot 240, and a sealing ring 250 placed in the slot. The push plate 270 inside 240, the connecting rod 280 connected to the middle of the push plate 270, and the elastic piece 290 connected to the end of the connecting rod 280 and fixed inside the positioning tube 230, through the sealing assembly 200, when the pump body 110 is working, the water flow will flow through the positioning tube 230, thereby pushing the elastic piece 290 to move, so that the push plate 270 squeezes the sealing ring piece 250. The sealing ring piece 250 is used to tightly adhere to the outer wall to achieve further sealing after pressurization during operation, effectively preventing the medium from flowing to the connection at the end of the water inlet pipe 120, reducing the pressure on the connection, and improving the service life.

[0026] It should be noted that the medium flowing through the positioning tube 230 will pass through the opening 260 and push the push plate 270, further increasing the thrust on the push plate 270, so that the sealing ring 250 is tightly attached to the outer wall. When the medium flow is interrupted, the elastic plate 290 will move outward under its own elastic force, thereby pulling the push plate 270 outward. At this time, the medium in the slot 240 will also be squeezed out, so there is no need to worry about the residue problem.

[0027] Specifically, the outer side of the fixing ring 220 is provided with a sealing sleeve 221, which can further improve the sealing performance at the end connection of the water inlet pipe 120. At the same time, the push block 271 can further increase the pressure of the sealing ring 250 on the outer wall by squeezing the sealing rib 251, so as to further improve the sealing performance.

[0028] Furthermore, the end of the positioning tube 230 is provided with an inclined groove 231, which can avoid obstructing the flow of the medium and ensure the high-speed flow of the medium.

[0029] Specifically, push blocks 271 are installed on both sides of the push plate 270, and grooves 272 are provided on the push blocks 271. Sealing ribs 251 are embedded on the sealing ring 250, which can further increase the extrusion force on the sealing ring 250, thereby improving the sealing performance of the sealing ring 250 to the outer wall.

[0030] On the other hand, the elastic sheet 290 is inclined downward, and the positioning tube 230 has a receiving groove 291 located inside the elastic sheet 290. Inclined downward means inclined inward. This arrangement makes it convenient to use the flow thrust of the medium to push the push plate 270 to squeeze the sealing ring 250 to improve the sealing performance. In addition, the elastic sheet 290 in the sealing assembly 200 in the water outlet pipe 130 is inclined outward, and the tilting direction is the same as the medium flow direction.

[0031] The working principle and usage process of this utility model are as follows: First, the fixing ring 220 is placed into the positioning groove 210, and then the water inlet pipe is connected so that the two ends of the positioning tube 230 are respectively located between the water inlet pipe 120 or the water outlet pipe 130 and the external pipe. When the medium flows, it will push the elastic piece 290, which in turn pushes the push plate 270 to squeeze the sealing ring piece 250, thereby achieving further sealing.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-sealing self-balancing multistage pump, comprising a pump body (110) and an inlet pipe (120) and an outlet pipe (130) connected to the pump body (110), characterized in that, Both the inlet pipe (120) and the outlet pipe (130) are equipped with sealing components (200). The sealing assembly (200) includes a positioning mechanism disposed at the end of the water inlet pipe (120) and a sealing mechanism connected to the end of the positioning mechanism; The positioning mechanism includes a positioning groove (210) opened at the end of the water inlet pipe (120), a fixing ring (220) assembled in the positioning groove (210), and a positioning tube (230) fixed to the inner side of the fixing ring (220); The sealing mechanism includes a slot (240) formed in the positioning tube (230), a sealing ring (250) fixed to the outside of the slot (240), an opening (260) formed on the side of the slot (240), a push plate (270) placed in the slot (240), a connecting rod (280) connected to the middle of the push plate (270), and an elastic piece (290) connected to the end of the connecting rod (280) and fixed to the inside of the positioning tube (230).

2. The high-sealing self-balancing multistage pump according to claim 1, characterized in that, A sealing sleeve (221) is provided on the outside of the fixing ring (220).

3. The high-sealing self-balancing multistage pump according to claim 1, characterized in that, The end of the positioning tube (230) is provided with a slanted groove (231).

4. The high-sealing self-balancing multistage pump according to claim 1, characterized in that, Push blocks (271) are installed on both sides of the push plate (270), and grooves (272) are provided on the push blocks (271).

5. A high-sealing self-balancing multistage pump according to claim 1, characterized in that, The sealing ring (250) is fitted with sealing ribs (251).

6. A high-sealing self-balancing multistage pump according to claim 1, characterized in that, The elastic sheet (290) is inclined downward, and the positioning tube (230) has a receiving groove (291) located inside the elastic sheet (290).

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