Mechanical seal flushing device for decontamination submersible centrifugal pump

Abstract

The utility model discloses a mechanical seal flushing device of a decontamination submersible centrifugal pump, and relates to the technical field of centrifugal pumps. The device comprises a flushing assembly and a recycling assembly, a water pump is installed in a water tank in the flushing assembly, a spiral disc is arranged in a pressurizing barrel, a blocking disc is arranged in a turbulent flow barrel, and the tail end of the turbulent flow barrel is connected with the inlet end of a cavity, where a mechanical seal is located, in the centrifugal pump body through a flushing pipe. The outlet end of a cavity, where the mechanical seal is located, in the centrifugal pump body is connected with a recycling pipe in the recycling assembly, the other end of the recycling pipe communicates with a recycling box, and a filter screen is further arranged in the recycling box. The flushing agent in the water tank can be intermittently input into the space where the mechanical seal is located in the centrifugal pump through the flushing assembly in a two-time speed increasing and turbulent flow mode, the flushing effect of the flushing agent on the mechanical seal is greatly improved, and the flushing agent obtained after flushing can be recycled and filtered through the recycling assembly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to centrifugal pump technical field, especially, relate to a decontamination submersible centrifugal pump mechanical seal flushing device. BACKGROUND

[0002] Centrifugal pump is a kind of pump for conveying liquid, it mainly relies on motor drive pump shaft rotation, so that the impeller on the pump shaft rotates at any time, when the impeller rotates, the liquid around it generates rotational centrifugal force, i.e. directional delivery to liquid, and the centrifugal pump still needs to be overhauled and maintained periodically after use, and the most important link in the maintenance process is to check the mechanical seal of centrifugal pump, and the mechanical seal is in isolation liquid or buffer liquid for a long time, and the surface oil stain is larger, so it needs to be flushed to ensure its cleanliness.

[0003] One Chinese patent application (or patent) with publication number CN220956147U discloses a centrifugal pump mechanical seal flushing device, which comprises a centrifugal pump and a liquid storage tank, the liquid outlet of the liquid storage tank is connected to the inside of the centrifugal pump body through a liquid outlet pipe, a first full-bore ball valve that can control the opening and closing of the inside of the pipe is installed in the middle end of the liquid outlet pipe, and the liquid inlet of the liquid storage tank is connected to the inside of the centrifugal pump body through a circulating liquid return pipe, the device optimizes the centrifugal pump flushing scheme, adds two full-bore ball valves in the isolation liquid or buffer liquid circulating inlet and outlet pipelines, can realize the isolation of the centrifugal pump and rotor pump mechanical seal from the isolation liquid or buffer tank by cutting off the valve, and ensures that most of the isolation liquid or buffer liquid can be reduced during mechanical seal replacement or maintenance operation.

[0004] The centrifugal pump mechanical seal flushing device described above adds two full-bore ball valves in the isolation liquid or buffer liquid circulating inlet and outlet pipelines, and realizes the isolation of the centrifugal pump and rotor pump mechanical seal from the isolation liquid or buffer tank by cutting off the valve, part of the isolation liquid or buffer liquid is used to provide lubrication effect for the mechanical seal, and the mechanical seal is also in the isolation liquid or buffer liquid, so direct high-pressure flushing cannot completely guarantee the cleanliness of the mechanical seal, and still causes the problem of lubrication of the surface of the mechanical seal, and when flushing the centrifugal pump, only the isolation liquid or buffer liquid is recycled, and the flushing liquid used for flushing the mechanical seal directly flows out from the pump body, so the problem of waste of flushing liquid resources is caused. Therefore, we provide a decontamination submersible centrifugal pump mechanical seal flushing device to solve the problems in the above. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose lies in providing a kind of decontamination submersible centrifugal pump mechanical seal flushing device, by utilizing flushing assembly can the flushing agent in water tank is input to the space of mechanical seal in centrifugal pump by two times speed increasing and the way of intermittent disturbance, greatly improve the flushing effect of flushing agent to mechanical seal, by utilizing recovery assembly can the flushing agent after flushing is recycled and filtered, the problem of the centrifugal pump mechanical seal flushing device described above appears is solved.

[0006] To solve the above technical problems, the utility model is realized through the following technical schemes:

[0007] The utility model discloses a kind of decontamination submersible centrifugal pump mechanical seal flushing device, including flushing component and recovery component;The flushing component and recovery component are separately arranged at the both sides of centrifugal pump body, and flushing component and recovery component are respectively communicated with the inlet end and outlet end of the chamber where mechanical seal in centrifugal pump body, water pump is installed in the water tank in the flushing component, and the outlet end of water tank is provided with pressure cylinder, and the outlet end of pressure cylinder is communicated with turbulence cylinder, spiral disc is arranged in the inside of pressure cylinder, limiting rod is arranged in the inside of turbulence cylinder, and baffle is sleeved on limiting rod, the end of turbulence cylinder is connected with the inlet end of the chamber where mechanical seal in centrifugal pump body by flushing pipe;

[0008] The outlet end of the chamber where mechanical seal in centrifugal pump body is connected with recovery pipe in recovery component, another end of recovery pipe is communicated with recovery tank, and filter screen is further arranged in the inside of recovery tank.

[0009] The utility model is further provided, the water tank in the flushing component is filled with flushing agent, and the top cover of water tank is provided with sealing plate.

[0010] The utility model is further provided, the center of pressure cylinder is provided with center rod, and the upper and lower ends of center rod are further threadedly connected with limiting disc, the outer side wall of limiting disc is further connected with the inner wall of the two shaft ends of pressure cylinder, and spiral disc is welded on the outer wall of center rod.

[0011] The utility model is further provided, the center of the transverse central axis surface of turbulence cylinder is provided with center hole, the center hole is threadedly connected with rod sleeve, and rod sleeve is rotatably connected with the two ends of limiting rod.

[0012] The utility model is further provided, the baffle is disc-shaped structure, and the outer peripheral side wall of baffle is matched with the inner wall of turbulence cylinder, and baffle is rotatably connected with turbulence cylinder by limiting rod.

[0013] The utility model is further provided, one end of flushing pipe is sleeved with the bottom end of turbulence cylinder, and the other end of flushing pipe is further sleeved on sealing cover, and sealing cover is covered in the inlet end of the chamber where mechanical seal in centrifugal pump body.

[0014] The utility model further sets up, the bottom side wall of recovery box in recovery component is connected through bolt with box frame, and the top of recovery box is also covered with box cover.

[0015] The utility model further sets up, the filter screen in recovery box is obliquely arranged on two diagonal positions of recovery box, a pipe cover is further sleeved on the tail end of recovery pipe on recovery box, and the pipe cover is arranged at the outlet end of the chamber where the mechanical seal of the centrifugal pump body is located.

[0016] The utility model has the advantages of:

[0017] 1. The utility model discloses a washing component, which includes a water tank, the water tank is connected to the inside of the washing pipe through a pressure increasing cylinder and a pressure increasing cylinder at the bottom, so that the washing agent in the water tank is washed into the chamber where the mechanical seal of the centrifugal pump body is located through the washing pipe, and the washing agent in the water tank contacts the spiral disc in the pressure increasing cylinder, and the washing agent impacts the spiral disc downwards, and the impact force increases gradually during the downward flow, which improves the washing force of the mechanical seal in the centrifugal pump body, and when the high-impact washing agent flows out of the pressure increasing cylinder, the pressure increasing cylinder will impact the baffle disc in the pressure increasing cylinder, so that the baffle disc rotates around the limiting rod, and the cleaning agent in the washing pipe is in an intermittent state, and the washing agent in the chamber where the mechanical seal of the centrifugal pump body is located is also intermittent, which can better wash the mechanical seal.

[0018] 2. The utility model discloses a recovery component, which includes a recovery tank, and the recovery tank is connected to the outlet of the chamber where the mechanical seal of the centrifugal pump body is located through a recovery pipe, and the washing agent with dirt after being washed by the washing component is stored in the recovery tank through the recovery pipe, which realizes the recycling effect of the washing agent, and the washing agent is filtered by the filter screen in the recovery tank when flowing back to the recovery tank.

[0019] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0021] Figure 1It is a structural schematic view of a mechanical seal flushing device of a decontamination submersible centrifugal pump.

[0022] Figure 2 It is a structural sectional view of a mechanical seal flushing device of a decontamination submersible centrifugal pump.

[0023] Figure 3 It is a structural exploded view of a mechanical seal flushing device of a decontamination submersible centrifugal pump.

[0024] Figure 4 It is a structural exploded view of a recovery assembly.

[0025] Figure 5 It is a structural exploded view of a flushing assembly.

[0026] Figure 6 It is a structural exploded view of a booster cylinder.

[0027] Figure 7 It is a structural exploded view of a spoiler cylinder.

[0028] In the drawings, the components represented by each reference numeral are listed as follows:

[0029] 1 - centrifugal pump body, 2 - flushing assembly, 201 - water tank, 201a - sealing plate, 201b - water pump, 202 - booster cylinder, 202a - center rod, 202a-1 - limiting disc, 202b - spiral disc, 203 - spoiler cylinder, 203a - center hole, 203b - limiting rod, 203b-1 - rod sleeve, 203c - blocking disc, 204 - flushing pipe, 204a - sealing cover, 3 - recovery assembly, 301 - recovery tank, 301a - tank frame, 301b - tank cover, 302 - recovery pipe, 302a - pipe cover, 303 - filter screen. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Embodiment 1

[0032] Please refer to Figures 1-4 The present application is a mechanical seal flushing device of a decontamination submersible centrifugal pump, which comprises a centrifugal pump body 1. The outlet end of the chamber where the mechanical seal is located in the centrifugal pump body 1 is connected with a recovery assembly 3. The flushing agent after flushing can be introduced into a recovery tank 301 through a recovery pipe 302 in the recovery assembly 3.

[0033] Specifically, the right side wall of the recovery box 301 in the recovery assembly 3 is threadedly connected with a recovery pipe 302, and the other end of the recovery pipe 302 is sleeved on a pipe sleeve 302a, and the recovery box 301 is further provided with a filter screen 303 in a slanting manner.

[0034] Further, the outlet end of the chamber where the mechanical seal of the centrifugal pump body 1 is located is threadedly connected with the pipe sleeve 302a, the top of the recovery box 301 is further provided with a box cover 301a, and the inner side wall of the filter screen 303 in the recovery box 301 cooperates with the inner wall of the recovery box 301, and the filter screen 303 equally divides the recovery box 301 into two triangular chambers.

[0035] The operation process of the embodiment is as follows: after the mechanical seal of the centrifugal pump body 1 is flushed, the flushing water flows out from the outlet end, flows into the recovery pipe 302 through the pipe sleeve 302a, flows into the recovery box 301 through the recovery pipe 302, and the flushing agent with dirt in the recovery box 301 contacts the filter screen 303, thereby filtering the particulate matters in the dirty flushing agent.

[0036] Embodiment 2

[0037] Please refer to Figures 5-7 On the basis of the specific embodiment one, the flushing assembly 2 is further provided, and the flushing agent input into the chamber where the mechanical seal of the centrifugal pump body 1 is located can be pressurized by using the pressurizing cylinder 202 in the flushing assembly 2, and the part of the flushing agent pressurized can be disturbed by the turbulence cylinder 203, so that the flushing agent entering into the chamber where the mechanical seal of the centrifugal pump body 1 is located forms an intermittent conveying effect.

[0038] Specifically, the water tank 201 in the flushing assembly 2 is provided with a water pump 201b, and the outlet end of the water tank 201 is connected with the pressurizing cylinder 202, the upper and lower side walls of the pressurizing cylinder 202 are threadedly connected with limiting discs 202a-1, the centers of the two limiting discs 202a-1 are further threadedly connected with a center rod 202a, the outer wall of the center rod 202a is welded with a spiral disc 202b, the outlet end of the pressurizing cylinder 202 is further connected with the inlet end of the turbulence cylinder 203, the inside of the turbulence cylinder 203 is penetrated with a limiting rod 203b, the limiting rod 203b is further sleeved with a baffle disc 203c, the end of the turbulence cylinder 203 is threadedly connected with the flushing pipe 204, and the other end of the flushing pipe 204 is further connected with the inlet end of the chamber where the mechanical seal of the centrifugal pump body 1 is located through a sealing cover 204a.

[0039] Further, the top of the water tank 201 is further provided with a sealing plate 201a, a central hole 203a is formed in the center of the spoiler 203, and a rod sleeve 203b-1 is arranged in the central hole 203a, and the spoiler 203 is rotationally connected with the limiting rod 203b through the rod sleeve 203b-1, and the baffle disc 203c on the limiting rod 203b is arranged in cooperation with the inner wall of the spoiler 203.

[0040] The operation process of the embodiment is as follows: the flushing agent stored in the water tank 201 is input into the booster cylinder 202 under the action of the water pump 201 to form the first speed increase of the flushing agent, and then the flushing agent entering the booster cylinder 202 will contact the spiral disc 202b therein, the flushing agent will impact downward along the spiral disc 202b, and the impact force gradually increases in the process of downward flow, and the second speed increase is completed, and the flushing agent subjected to the second speed increase enters the spoiler 203, which will generate an impact force on the baffle disc 203c in the spoiler 203, so that the baffle disc 203c rotates around the limiting rod 203b, so that the cleaning agent entering the flushing pipe 204 is in an intermittent and intermittent state, and finally the cleaning agent is input into the chamber where the mechanical seal of the centrifugal pump body 1 through the sealing cover 204a, and the intermittent flushing of the mechanical seal is completed.

[0041] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The embodiments are selected and described in the specification in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A decontamination submersible centrifugal pump mechanical seal flushing device, comprising a flushing assembly (2) and a recovery assembly (3); characterized in that: The flushing assembly (2) and the recovery assembly (3) are arranged on the two sides of the centrifugal pump body (1), and the flushing assembly (2) and the recovery assembly (3) are communicated with the inlet end and the outlet end of the chamber where the mechanical seal is arranged in the centrifugal pump body (1) respectively, a water tank (201) in the flushing assembly (2) is internally provided with a water pump (201b), and the outlet end of the water tank (201) is provided with a pressurizing cylinder (202), the outlet end of the pressurizing cylinder (202) is communicated with a turbulence cylinder (203), the inside of the pressurizing cylinder (202) is provided with a spiral disc (202b), the inside of the turbulence cylinder (203) is provided with a limiting rod (203b), the limiting rod (203b) is sleeved with a baffle disc (203c), and the end of the turbulence cylinder (203) is connected with the inlet end of the chamber where the mechanical seal is arranged in the centrifugal pump body (1) through a flushing pipe (204). The outlet end of the chamber where the mechanical seal is arranged in the centrifugal pump body (1) is connected with a recovery pipe (302) in the recovery assembly (3), the other end of the recovery pipe (302) is communicated with a recovery tank (301), and the inside of the recovery tank (301) is further provided with a filter screen (303).

2. A decontamination submersible centrifugal pump mechanical seal flush device according to claim 1, characterized in that, The water tank (201) in the flushing assembly (2) is filled with a flushing agent, and the top cover of the water tank (201) is provided with a sealing plate (201a).

3. A decontamination submersible centrifugal pump mechanical seal flush device according to claim 1, characterized in that, The center of the pressurizing cylinder (202) is provided with a center rod (202a), and the upper and lower ends of the center rod (202a) are further threadedly connected with limiting discs (202a-1), the outer side wall of the limiting disc (202a-1) is further connected with the inner walls of the two shaft ends of the pressurizing cylinder (202), and the spiral disc (202b) is welded on the outer wall of the center rod (202a).

4. A decontamination submersible centrifugal pump mechanical seal flush device in accordance with claim 1, wherein, The center of the transverse central axis surface of the turbulence cylinder (203) is provided with a center hole (203a), the center hole (203a) is threadedly connected with a rod sleeve (203b-1), and the rod sleeve (203b-1) is rotatably connected with the two ends of the limiting rod (203b).

5. A decontamination submersible centrifugal pump mechanical seal flush device in accordance with claim 1, wherein, The baffle disc (203c) is in a disc structure, the outer peripheral side wall of the baffle disc (203c) is matched with the inner wall of the turbulence cylinder (203), and the baffle disc (203c) is rotatably connected with the turbulence cylinder (203) through the limiting rod (203b).

6. A decontamination submersible centrifugal pump mechanical seal flush apparatus as claimed in claim 1, wherein, One end of the flushing pipe (204) is sleeved with the bottom end of the turbulence cylinder (203), and the other end of the flushing pipe (204) is further sleeved on a sealing cover (204a), and the sealing cover (204a) covers the inlet end of the chamber where the mechanical seal is arranged in the centrifugal pump body (1).

7. A decontamination submersible centrifugal pump mechanical seal flush apparatus as claimed in claim 1, wherein, The bottom side wall of the recovery tank (301) in the recovery assembly (3) is connected with a tank frame (301a) through bolts, and the top of the recovery tank (301) is further provided with a tank cover (301b).

8. A decontamination submersible centrifugal pump mechanical seal flush apparatus as claimed in claim 7, wherein, The filter screen (303) in the recovery tank (301) is obliquely arranged at two diagonal positions of the recovery tank (301), the end of the recovery pipe (302) on the recovery tank (301) is further sleeved with a pipe cover (302a), and the pipe cover (302a) covers the outlet end of the chamber where the mechanical seal is arranged in the centrifugal pump body (1).

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