A liquid lift pump base with a replaceable sealing surface

Abstract

A liquid lift pump base with a replaceable sealing surface according to the present invention belongs to the technical field of water pump equipment and includes a base body, a first sealing ring, and a second sealing ring; the first sealing ring is installed at the water outlet of the base body, and a first covering ring plate extending into the base body is provided on the inner wall of the first sealing ring; the second sealing ring is installed at the water inlet of the lift pump, and a second covering ring plate extending into the lift pump is provided on the inner wall of the second sealing ring; buffer grooves are evenly distributed on the inner walls of the first covering ring plate and the second covering ring plate. Both the first sealing ring and the second sealing ring are detachably installed, improving the efficiency of replacement and repair after damage; the first covering ring plate and the second covering ring plate cooperate to jointly form a force-bearing surface for water flow impact; the buffer grooves can reduce the flow velocity of the water flow in contact with them, thereby reducing the pressure generated on the sealing surface, so as to reduce the impact wear degree on the sealing surface.

Description

Technical Field

[0001] The present invention belongs to the technical field of water pump equipment, and specifically relates to a liquid lift pump base with a replaceable sealing surface. Background Art

[0002] The hot rolling swirl well lift pump is used to supply the water in the swirl well to the rare earth disk hot water tank. In the prior art, the installation of the swirl well lift pump is completed by the connection and cooperation of the lift pump base 1 and the lift pump 3. Among them, the lift pump base seal 5 and the lift pump outlet seal 4 are locked and connected through the coupling device 2 to form an effective sealing joint surface. The sealing surface 5 of the water pump base and the body of the lift pump base 1 are integrally cast. Once the sealing surface 5 or 4 is scoured and damaged, the water sealing function of the sealing surface is lost, and the water output by the lift pump 3 will leak through the damaged part. And the water contains mill scale, and long-term scouring will cause the damaged part to spread rapidly. Since the coupled seal cannot be completely sealed, the base needs to be replaced as a whole after one use cycle (1.5 years) after scouring. Since the lift pump base 1 is fixed by secondary grouting and is generally located in the water more than 13 meters below the ground, the overhaul of the base must be combined with drainage and the removal of the bottom foundation. It is difficult to complete the replacement during the short-term overhaul within 24 hours a day, and it must be processed in combination with a maintenance time of more than 10 days. And due to production problems, the annual overhaul of the rolling line generally has a long cycle. The damaged base will continuously damage the sealing surface of the water pump, resulting in high equipment maintenance costs. Summary of the Invention

[0003] In order to solve the problem that the sealing surface is easily damaged by scouring erosion, resulting in cumbersome maintenance and replacement, the present invention provides a liquid lift pump base with a replaceable sealing surface.

[0004] The present invention is realized by the following technical solutions:

[0005] A liquid lift pump base with a replaceable sealing surface, comprising a base body, a first sealing ring and a second sealing ring;

[0006] The first sealing ring is installed at the water outlet of the base body, and a first covering ring plate extending into the base body is provided on the inner wall of the first sealing ring;

[0007] The second sealing ring is installed at the water inlet of the lift pump, and a second covering ring plate extending into the lift pump is provided on the inner wall of the second sealing ring;

[0008] Buffer grooves are uniformly distributed on the inner walls of the first covering ring plate and the second covering ring plate.

[0009] The docking of the base body and the lifting pump is achieved through the cooperation of the first sealing ring and the second sealing ring, and both the first sealing ring and the second sealing ring are detachably installed, which improves the efficiency of replacement and repair after damage; the first covering ring plate and the second covering ring plate cooperate to jointly form a force-bearing surface for the impact of water flow; the buffer groove can reduce the flow velocity of the water flow in contact with it, thereby reducing the pressure on the sealing surface, so as to reduce the impact wear degree on the sealing surface.

[0010] A further improvement of the present invention is that the water outlet of the above-mentioned base body is provided with an installation groove for accommodating the first sealing ring. The first sealing ring is quickly positioned and installed on the base body through the installation groove.

[0011] A further improvement of the present invention is that an installation boss is provided on the inner groove surface of the above-mentioned installation groove, and the inner wall of the installation boss is flush with the inner wall of the base body; a first sealing groove matching with the installation boss is provided on the end surface of the first sealing ring close to the base body. Through the cooperation of the installation boss and the first sealing groove, the sealing performance between the first sealing ring and the base body is improved.

[0012] A further improvement of the present invention is that at least one rubber sealing ring is provided on both the inner and outer walls of the above-mentioned installation boss. The sealing effect between the first sealing ring and the base body is further improved through the rubber sealing ring.

[0013] A further improvement of the present invention is that a first docking protrusion is provided on the end surface of the first sealing ring close to the second sealing ring, and a first docking groove matching with the first docking protrusion is provided on the end surface of the second sealing ring close to the first sealing ring. Through the cooperation of the first docking protrusion and the first docking groove, the sealing effect of the sealing surface formed by the first sealing ring and the second sealing ring is improved.

[0014] A further improvement of the present invention is that at least one rubber sealing ring is provided on both the inner and outer walls of the above-mentioned first docking protrusion. The sealing performance between the first sealing ring and the second sealing ring is further improved through the rubber sealing ring.

[0015] A further improvement of the present invention is that inclined first guiding grooves are provided at one ends of the above-mentioned first covering ring plates extending into the base body. Since the first covering ring plates extend into the base body, a step will be formed, thus reducing the area for water flow to pass through. Therefore, the water flow is guided through the first guiding grooves.

[0016] A further improvement of the present invention is that inclined second guiding grooves are provided at one ends of the above-mentioned second covering ring plates extending into the lifting pump. Similarly, the water flow is buffered and guided through the second guiding grooves to avoid large impacts due to the large drop height of the water flow after passing through the second covering ring plates.

[0017] A further improvement of the present invention is that the above buffer groove has a water droplet-shaped structure, and the buffer groove of the water droplet-shaped structure gradually increases along the water flow direction. The water droplet-shaped buffer groove introduces water and reduces the flow rate inside the buffer groove, avoiding the pressure existing when the water flow passes at high speed from acting on the sealing surface.

[0018] As can be seen from the above technical solutions, the beneficial effects of the present invention are as follows: The docking between the base body and the lift pump is realized through the cooperation of the first sealing ring and the second sealing ring, and both the first sealing ring and the second sealing ring are detachably installed, improving the efficiency of replacement and repair after damage; The first covering ring plate and the second covering ring plate cooperate to jointly form a force-bearing surface for the water flow impact; The buffer groove can reduce the flow rate of the water flow in contact with it, thereby reducing the pressure generated on the sealing surface, so as to reduce the impact wear degree on the sealing surface. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the prior art.

[0021] Figure 2 It is a schematic structural diagram of the base body of the specific embodiment of the present invention.

[0022] Figure 3 It is a partial schematic diagram of the installation groove of the specific embodiment of the present invention.

[0023] Figure 4 It is a combined schematic diagram of the first sealing ring and the second sealing ring of the specific embodiment of the present invention.

[0024] Figure 5 It is a sectional schematic diagram of the first sealing ring and the second sealing ring of the specific embodiment of the present invention.

[0025] In the drawings: 1. Lift pump base, 2. Coupling device, 3. Lift pump, 4. Lift pump base seal, 5. Lift pump outlet seal, 6. Base body, 61. Installation groove, 62. Installation boss, 7. First sealing ring, 71. First covering ring plate, 72. First docking protrusion, 73. First guiding groove, 74. First sealing groove, 8. Second sealing ring, 81. Second covering ring plate, 82. First docking groove, 83. Second guiding groove, 9. Buffer groove. Specific Embodiments

[0026] To make the objectives, features, and advantages of the present invention more apparent and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this patent.

[0027] As shown in the attached Figure 2-5 figures, a liquid lift pump base with a replaceable sealing surface includes a base body 6, a first sealing ring 7, and a second sealing ring 8; the docking of the base body 6 with the lift pump is realized through the cooperation of the first sealing ring 7 and the second sealing ring 8, and both the first sealing ring 7 and the second sealing ring 8 are detachably installed, improving the efficiency of replacement and repair after damage.

[0028] An installation groove 61 for accommodating the first sealing ring 7 is provided at the water outlet of the base body 6. The first sealing ring 7 is quickly positioned and installed on the base body 6 through the installation groove 61.

[0029] An installation boss 62 is provided on the inner groove surface of the installation groove 61, and the inner wall of the installation boss 62 is flush with the inner wall of the base body 6; a first sealing groove 74 matching the installation boss 62 is provided on the end surface of the first sealing ring 7 close to the base body 6. The sealing performance between the first sealing ring 7 and the base body 6 is improved through the cooperation of the installation boss 62 and the first sealing groove 74.

[0030] At least one rubber sealing ring is provided on both the inner and outer walls of the installation boss 62. The sealing effect between the first sealing ring 7 and the base body 6 is further improved through the rubber sealing ring.

[0031] The first sealing ring 7 is installed at the water outlet of the base body 6, and a first covering ring plate 71 extending into the base body 6 is provided on the inner wall of the first sealing ring 7; inclined first guiding grooves 73 are provided at one end of the first covering ring plate 71 extending into the base body 6. Since the first covering ring plate 71 extends into the base body 6, a step is formed, thus reducing the area through which water flows. Therefore, the water flow is guided through the first guiding grooves 73.

[0032] The second sealing ring 8 is installed at the water inlet of the lift pump, and a second covering ring plate 81 extending into the lift pump is provided on the inner wall of the second sealing ring 8; inclined second guiding grooves 83 are provided at one end of the second covering ring plate 81 extending into the lift pump. Similarly, the water flow is buffered and guided through the second guiding grooves 83 to avoid large impacts due to the large drop height after the water flow passes through the second covering ring plate 81.

[0033] On the end face of the first sealing ring 7 close to the second sealing ring 8, a first docking protrusion 72 is provided, and on the end face of the second sealing ring 8 close to the first sealing ring 7, a first docking groove 82 matching with the first docking protrusion 72 is provided. Through the cooperation of the first docking protrusion 72 and the first docking groove 82, the sealing effect of the sealing surface formed by the first sealing ring 7 and the second sealing ring 8 is improved.

[0034] On both the inner and outer walls of the first docking protrusion 72, at least one rubber sealing ring is provided. The sealing performance between the first sealing ring 7 and the second sealing ring 8 is further improved through the rubber sealing ring.

[0035] Buffer grooves 9 are evenly distributed on the inner walls of the first covering ring plate 71 and the second covering ring plate 81. The buffer grooves 9 are in a water droplet shape structure, and the buffer grooves 9 in the water droplet shape structure gradually increase along the water flow direction. The water droplet-shaped buffer grooves 9 introduce water and reduce the flow rate inside the buffer grooves 9, avoiding the pressure generated when the water flow passes at high speed acting on the sealing surface.

[0036] The first sealing ring 7 is installed on the base body 6, the second sealing ring 8 is installed on the lifting pump, and finally the first sealing ring 7 and the second sealing ring 8 are locked and connected by a coupling device.

[0037] For the base of the liquid lifting pump with a replaceable sealing surface described in the present invention, the docking between the base body and the lifting pump is realized through the cooperation of the first sealing ring and the second sealing ring, and both the first sealing ring and the second sealing ring are detachably installed, improving the efficiency of replacement and repair after damage; the first covering ring plate and the second covering ring plate cooperate to jointly form a force-bearing surface for the water flow impact; the buffer grooves can reduce the flow rate of the water flow in contact with them, thereby reducing the pressure generated on the sealing surface, so as to reduce the impact wear degree on the sealing surface.

[0038] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same and similar parts among the embodiments, reference can be made to each other.

[0039] Terms such as "upper", "lower", "outer side", "inner side", etc. in the specification, claims and above-mentioned drawings of the present invention, if any, are used to distinguish the relative relationship in position and do not need to be given a qualitative definition. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0040] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid lift pump base with a replaceable sealing surface, characterized in that, It includes a base body (6), a first sealing ring (7) and a second sealing ring (8); the first sealing ring (7) is installed at the water outlet of the base body (6), and a first covering ring plate (71) extending into the base body (6) is provided on the inner wall of the first sealing ring (7); the second sealing ring (8) is installed at the water inlet of the lift pump, and a second covering ring plate (81) extending into the lift pump is provided on the inner wall of the second sealing ring (8); buffer grooves (9) are evenly distributed on the inner walls of the first covering ring plate (71) and the second covering ring plate (81); inclined first guiding grooves (73) are provided at one end of the first covering ring plate (71) extending into the base body (6); inclined second guiding grooves (83) are provided at one end of the second covering ring plate (81) extending into the lift pump; the buffer grooves (9) are in a water droplet shape, and the buffer grooves (9) in the water droplet shape gradually increase along the water flow direction; an installation groove (61) for accommodating the first sealing ring (7) is provided at the water outlet of the base body (6); an installation boss (62) is provided on the inner groove surface of the installation groove (61), and the inner wall of the installation boss (62) is flush with the inner wall of the base body (6); a first sealing groove (74) matching with the installation boss (62) is provided on the end face of the first sealing ring (7) close to the base body (6).

2. The liquid lift pump base with a replaceable sealing surface according to claim 1, characterized in that, At least one rubber sealing ring is provided on both the inner and outer walls of the installation boss (62).

3. The liquid lift pump base with a replaceable sealing surface according to claim 1, characterized in that, A first docking protrusion (72) is provided on the end face of the first sealing ring (7) close to the second sealing ring (8), and a first docking groove (82) matching with the first docking protrusion (72) is provided on the end face of the second sealing ring (8) close to the first sealing ring (7).

4. The liquid lift pump base with a replaceable sealing surface according to claim 3, characterized in that, At least one rubber sealing ring is provided on both the inner and outer walls of the first docking protrusion (72).

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