CN220365701U - Rubber diaphragm breaking preventing device of water diaphragm pump - Google Patents

Abstract

The utility model provides a breaking-proof rubber diaphragm device of a water diaphragm pump, which comprises a device tank body, wherein a slurry is arranged in the device tank body, a clear water inlet and a clear water outlet are embedded in the side edge of the device tank body, a slurry inlet and a slurry outlet are embedded in the bottom of the device tank body, the device is arranged between a water return pipe and a clear water pipe, when clear water entering action and slurry discharging action are not performed cooperatively, when clear water continuously presses a diaphragm, the device is automatically opened when the pressure exceeds a certain degree, the clear water pipe is communicated with the water return pipe, the pressure outside the diaphragm of an isolation tank begins to drop, when the pressure drops to a normal degree, the clear water pipe is disconnected with the water return pipe, the high-pressure environment of the water diaphragm pump is relieved, the water diaphragm pump works normally, the rubber diaphragm of the water diaphragm pump is prevented from being broken due to the fact that the high pressure is caused by the fact that the pressure of the pressure is too high, equipment is prevented from being damaged due to overpressure, and the damage to the diaphragm inside the diaphragm tank is prevented from being caused by overpressure through a pressure relief valve arranged in the breaking-proof diaphragm device.

Description

Rubber diaphragm breaking preventing device of water diaphragm pump

Technical Field

The utility model relates to the field of diaphragm devices, in particular to a breaking-proof rubber diaphragm device of a water diaphragm pump.

Background

Flotation is a process for separating mineral particles by utilizing the physical and chemical property difference of the mineral surface, is an ore separation method which is most widely used at present, is an important link when tailings are treated as an end step of an ore flotation method, and a good tailings transmission system is also an important guarantee for mineral separation production. The water diaphragm pump is novel ore pulp transmission equipment, and the equipment has the characteristics of high efficiency, electric energy conservation, less spare parts, high automation degree of equipment operation and simplicity in operation. As the heart part of the tailing conveying system, the water diaphragm pump is required to be modified and optimized, and the improvement of the whole tailing conveying system is also of vital importance.

However, the existing water diaphragm pump has some defects in the use process, the diaphragm is easy to break under the condition that the diaphragm pump is frequently used, the rubber diaphragm is used as high-price consumable, the use cost of the water diaphragm pump is high, the diaphragm of the existing water diaphragm pump is frequently damaged, and the diaphragm breaking and cutting gap penetrates through the wound. The diaphragm is broken frequently, and the diaphragm breaks after the shortest use for two days, so that the normal work for a long time cannot be completed. The diaphragm is frequently replaced, so that a large amount of manpower and financial resources are consumed, the load of the system is sometimes reduced, the economic loss is large, and the safety risk exists in the overhaul process. Therefore, we make improvements to this and propose a water diaphragm pump anti-breaking rubber diaphragm device.

Disclosure of Invention

The utility model aims at: aiming at the problems of the prior art. In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a rubber diaphragm device is prevented breaking by water diaphragm pump, includes the device jar body to and the valve body, the inside of device jar body is provided with the thick liquid, device jar body side embeds has clear water to import and export, and the bottom then embeds the thick liquid import and export, and the thick liquid with thick liquid import and export interconnect, thick liquid both sides cover one side diaphragm outward, the diaphragm surface is flowing clear water.

As a preferable technical scheme of the utility model, the clean water is distributed on two sides of the slurry and is also positioned in the tank body of the device.

As a preferable technical scheme of the utility model, the valve rod is embedded in the valve body.

As a preferable technical scheme of the utility model, a compression spring is nested on the surface of the outer rod of the valve rod, and a valve disc is fixed below the compression spring.

As a preferable technical scheme of the utility model, the head end and the tail end of the valve rod are respectively nested with a diaphragm pressing plate and a sealing gasket pressing plate, wherein a sealing gasket is arranged between the sealing gasket pressing plate and the valve disc.

As a preferable technical scheme of the utility model, an upper control chamber is arranged at the top of the valve body, a lower control chamber is arranged below the upper control chamber, and the diaphragm pressing plate is positioned in the lower control chamber.

As a preferable technical scheme of the utility model, the connecting ends between the upper control chamber and the lower control chamber are respectively provided with a diaphragm seat, and the two diaphragm seats are symmetrical.

As a preferable technical scheme of the utility model, a diaphragm is arranged between the diaphragm seats, the diaphragm is positioned in the upper control chamber and the lower control chamber, the central sections of the upper control chamber and the lower control chamber are respectively connected with a valve cover above the valve body.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device is arranged between the water return pipe and the clear water pipe, when the clear water entering action and the slurry discharging action are not performed cooperatively, when the clear water continuously extrudes the diaphragm, the device is automatically opened when the pressure exceeds a certain degree, so that the clear water pipe is communicated with the water return pipe, the pressure outside the diaphragm of the isolation tank begins to drop, when the pressure drops to a normal degree, the device is automatically closed, the clear water pipe is disconnected from the water return pipe, the high-pressure environment of the diaphragm pump is relieved, the diaphragm pump is enabled to work normally, and the situation that the rubber diaphragm of the diaphragm pump is broken due to the high-pressure environment inside the isolation tank of the diaphragm pump is avoided.

2. The pressure relief valve arranged in the anti-breaking diaphragm device can prevent equipment failure caused by excessive water pressure and prevent the equipment from being damaged due to overpressure. When the internal pressure of the pipeline connected with the valve exceeds the preset value, the liquid in the pipeline flows out from the pressure release valve, and the internal pressure of the pipeline cannot exceed the preset value, so that the damage of the diaphragm in the diaphragm tank caused by the overpressure is avoided.

Drawings

FIG. 1 is a schematic diagram of a structure provided by the present utility model;

FIG. 2 is a schematic view of an internal structure provided by the present utility model;

fig. 3 is a schematic diagram of a separator structure according to the present utility model.

The figures indicate:

1. a device tank; 2. a clear water inlet and outlet; 3. a slurry; 4. a slurry inlet and outlet; 5. a diaphragm; 6. clear water; 7. a valve body; 8. a valve stem; 9. a compression spring; 10. a diaphragm pressing plate; 11. a valve disc; 12. a gasket pressure plate; 13. a sealing gasket; 14. an upper control room; 15. a lower control room; 16. a diaphragm seat; 17. a membrane; 18. a valve cover.

Description of the embodiments

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of some embodiments of the utility model. All other embodiments obtained by those skilled in the art without making any creative effort based on the embodiments of the present utility model are within the protection scope of the present utility model, and it should be noted that the embodiments of the present utility model and features and technical solutions of the embodiments of the present utility model may be combined with each other without collision: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example 1: referring to fig. 1-3, a rubber diaphragm device for preventing a water diaphragm pump from breaking comprises a device tank body 1 and a valve body 7, wherein a slurry 3 is arranged in the device tank body 1, a clear water inlet and outlet 2 is embedded in the side edge of the device tank body 1, a slurry inlet and outlet 4 is embedded in the bottom of the device tank body, the slurry 3 is connected with the slurry inlet and outlet 4, one side of a diaphragm 5 is covered on the two sides of the slurry 3, and clear water 6 flows on the surface of the diaphragm 5. The clean water 6 is distributed on both sides of the slurry 3 and is also positioned in the tank 1 of the device. The valve rod 8 is embedded in the valve body 7, and the valve rod 8 is in a twenty-five degree slightly inclined state. A compression spring 9 is nested on the outer rod surface of the valve rod 8, and a valve disc 11 is fixed below the compression spring 9. The head end and the tail end of the valve rod 8 are respectively nested with a diaphragm pressing plate 10 and a sealing gasket 13 pressing plate 12, wherein the sealing gasket 13 is arranged between the sealing gasket 13 pressing plate 12 and the valve disc 11. An upper control chamber 14 is arranged at the top of the valve body 7, a lower control chamber 15 is arranged below the upper control chamber 14, and the diaphragm pressing plate 10 is positioned in the lower control chamber 15. The connecting ends between the upper control chamber 14 and the lower control chamber 15 are respectively provided with a diaphragm seat 16, and the two diaphragm seats 16 are symmetrically arranged. A diaphragm 17 is arranged between the diaphragm seats 16, the diaphragm 17 is positioned in the central sections of the upper control chamber 14 and the lower control chamber 15, and a valve cover 18 is connected above the valve body 7.

Example 2: the device for preventing the rubber diaphragm 5 from being broken by the water diaphragm 5 pump is characterized in that the rubber diaphragm 5 isolates clean water 6 from ore pulp, the existence of the rubber diaphragm 5 enables water and tailing ore pulp to be completely isolated, so that water consumption is not generated in the working process of the water diaphragm 5 pump, and the device is a large characteristic of the working of the water diaphragm 5 pump.

The water diaphragm 5 pump is that the slurry 3 passes through the diaphragm 5, the clean water 6 enters and exits from the diaphragm 5, when the slurry is fed, the diaphragm 5 is filled with the slurry 3, the diaphragm 5 is tightly pressed on the isolation tank or the screen drum, and the clean water 6 outside the diaphragm 5 flows back to the clean water 6 box under the action of the slurry feeding pressure. When the slurry is discharged, the high-pressure clean water 6 enters between the diaphragm 5 and the tank wall, the slurry 3 in the diaphragm 5 flows into the outer pipeline under the extrusion force of the clean water 6 outside the diaphragm 5, and the 3 tanks circularly work, so that the continuous slurry supply and discharge are realized.

The reasons for the current situation are analyzed according to the working principle of the water diaphragm 5 pump and the damage degree and the damage position of the rubber diaphragm 5. During operation of the water separator 5, the tank may be insufficiently filled with slurry for some reasons, such as: the lower protective cover in the isolation tank is blocked to prevent the isolation tank from pulp feeding, thereby affecting the pulp feeding amount. The slurry inlet valve is blocked or the slurry inlet valve rod 8 is broken to cause the slurry inlet valve to malfunction, so that the slurry inlet valve can not work normally, and the slurry inlet amount is influenced. The return water valve fails to cause the blocking of return water, thereby influencing the slurry inlet quantity. Before starting up, residual air in the isolation tank is not exhausted, and the slurry inlet amount is affected. The water return regulating valve is improper in manual regulation, the water return flow is small, and the slurry inlet amount is influenced. The reason causes the insulation tank to enter thick liquid not enough, leads to receiving the influence when clear water 6 valve and pulp discharging valve collaborative work, and the not enough of thick liquid volume of advancing leads to originally discharging thick liquid time to accomplish in advance, but the opening of clear water 6 valve is still continuing, will lead to clear water 6 to continuously extrude rubber diaphragm 5 at this moment, and clear water 6 pressure in the diaphragm 5 outside can reach more than 2.5MPa at this moment, and too high clear water 6 pressure can lead to rubber diaphragm 5 excessively to stretch, finally leads to rubber diaphragm 5 damage. Thereby directly leading to a lower service life of the rubber diaphragm 5 and failing to reach the theoretical service life of the rubber diaphragm 5.

How to fundamentally solve the problem of frequent breakage of the rubber diaphragm 5 is the main direction of the present study. The reason for the damaged surface of the rubber diaphragm 5 is that the overstretching of the rubber diaphragm 5 is directly caused by the high pressure environment caused by the continuous opening of the clean water 6 valve outside the rubber diaphragm 5. Due to insufficient slurry feeding amount caused by valve faults or other reasons, the action of injecting clean water 6 and the action of discharging slurry cannot be cooperatively performed, so that a high-pressure environment is formed outside the diaphragm 5, and the diaphragm 5 is excessively stretched and finally broken. In order to radically solve the problem, through long-time exploration and innovation, in combination with the actual production process, a device for preventing the membrane 5 of the water membrane 5 pump from being broken is provided, and the device is arranged above the original structure of the water membrane 5 pump and does not damage the integral structure of the raw water membrane 5 pump. Because the direct cause of causing the excessive stretching of the water diaphragm 5 pump is an overpressure environment, the device is a pressure relief device, the working principle is that the device is arranged between a water return pipe and a clear water 6 pipe, when the action of entering the clear water 6 and the action of discharging slurry are not performed cooperatively, when the clear water 6 continuously extrudes the diaphragm 5, the device is automatically opened when the pressure exceeds a certain degree, the clear water 6 pipe is communicated with the water return pipe, the pressure outside the diaphragm 5 of the isolation tank starts to drop, when the pressure drops to a normal degree, the device is automatically closed, the clear water 6 pipe is disconnected from the water return pipe, the high-pressure environment of the water diaphragm 5 pump is relieved, the normal work of the water diaphragm 5 pump is avoided, and the situation that the high-pressure environment inside the isolation tank of the water diaphragm 5 pump causes the rupture of the rubber diaphragm 5 of the water diaphragm 5 pump is avoided. The diaphragm 5 air pressure tank belongs to one of pressure vessels, the damage of the pressure vessel caused by overpressure is serious, the inside of the pressure vessel is easy to generate high pressure, the high pressure is also a potential safety hazard, the long-term overpressure also can influence the service life of equipment, and therefore, precautions must be taken when the diaphragm 5 air pressure tank generates overpressure, and unnecessary accidents and faults are avoided. The device can not only prevent the diaphragm 5 of the water diaphragm 5 pump from being broken, but also prolong the whole service life of equipment, and also eliminate the potential safety hazard caused by overpressure of the diaphragm 5 tank.

When the water diaphragm 5 pump works normally, the device is in a normally closed state, quick pressure relief is needed when a high pressure condition occurs, how to quickly and safely relieve the pressure when an overpressure condition occurs in the diaphragm 5 tank is a problem which is primarily considered when designing an anti-breaking device, and in order to achieve the technical scheme adopted by the purpose, the pressure relief structure is designed to solve the current problem and prevent the overpressure condition occurring in the diaphragm 5 tank from breaking the internal rubber diaphragm 5. The core component of the anti-breaking diaphragm 5 device is a pressure-holding relief valve, and the valve has the main function of preventing equipment from being broken due to excessive pressure and preventing the equipment from being damaged due to excessive pressure. When the pressure in the pipeline connected with the valve exceeds the preset pressure set by us, the pipeline liquid flows out from the pressure release valve, and the pressure in the pipeline cannot exceed the preset value, so that the damage to the diaphragm 5 in the diaphragm 5 tank caused by overpressure is avoided.

In order to ensure the reliability of the device and the safety of long-time operation of the anti-rupture membrane 5, a gate valve is added in the device, and the pressure-holding relief valve is very large in stamping during working and can generate a small challenge on the tightness in the long-time use process. When the laminating of relief valve and front cover is sealed not tight, probably leads to liquid leakage under the effect of pressure, whether leak normally or because the reason of external force produces leakage, can all influence the normal work of valve, if the degree of revealing is very serious, lasts this kind of condition for a long time, still can destroy the leakproofness of valve. In order to enhance the reliability of the anti-breaking device, a gate valve is additionally arranged on the anti-breaking device, so that the connection and disconnection states of the anti-breaking device can be effectively controlled after the problem of the pressure relief valve is ensured, and the normal use of the water diaphragm 5 pump can not be influenced when other conditions of the anti-breaking device occur.

The key component of the anti-breaking device of the diaphragm 5 pump diaphragm 5 is a pressure-holding relief valve, which is also the core of the device, and the pressure-releasing action is mainly completed through the pressure-holding relief valve when high pressure occurs in the diaphragm 5 tank; the safety pressure releasing and holding valve is used for stabilizing the pipeline pressure before the valve, when the pressure before the valve is over-pressure, the main valve is opened for pressure release, when the pipeline pressure is reduced below a set value, the main valve is closed, the pressure value can be set through a pilot valve adjusting screw, and the pressure value can be adjusted within a certain range.

Working principle: the pilot valve locknut is loosened, the adjusting screw is rotated clockwise, the screw acts downwards, at the moment, the opening pressure of the main valve is increased, the adjusting screw is rotated anticlockwise, the opening pressure of the main valve is reduced, the pressure value of a pipeline in front of the valve can be observed through the pressure gauge, and the lockscrew is screwed after the pressure value is set. When the pressure in front of the valve is increased, the pressure in the lower cavity of the pilot valve diaphragm 17 is also increased along with the pressure, after the pressure exceeds a set value, the diaphragm 17 drives the pilot valve core to move upwards, the inverted valve is opened, water in the upper cavity of the main valve diaphragm 17 is discharged, the pressure is reduced, the main valve core is opened under the action of inlet medium pressure, the main valve starts to release pressure, the pressure in the pipeline in front of the valve is reduced along with the pressure reduction, when the pressure is reduced below the set value, the pilot valve core is closed under the action of an adjusting spring, the pressure in the upper cavity of the main valve diaphragm 17 is gradually increased, the main valve core is closed under the action of the pressure difference between the main valve diaphragm 17 and the main valve core, the pressure in front of the valve is gradually increased when the pressure is set, the main valve stops releasing pressure, the front pressure of the valve is opened at the set value, then the front pressure of the main valve is continuously increased, the main valve keeps the full-open discharge state, and the front pressure of the valve is gradually reduced until the main valve is closed.

The anti-breaking device is arranged at the position of the water diaphragm 5 transmission system and has the requirement, the purpose of the installation device is to solve the overpressure condition in operation, how to effectively control the pressure of clear water 6 outside the diaphragm 5 and effectively treat the discharged clear water 6, after the clear water 6 is pumped and pressurized by the device, one end of the device is arranged on a pipeline at the water return regulating valve, the other end of the device is connected with the pipeline at the water return regulating valve, when the overpressure occurs, clear water 6 outside the diaphragm 5 flows to a water return tank, the overpressure is effectively controlled, and clear water 6 discharged by the device is effectively collected and recycled, so that the waste of water resources is avoided.

The device is connected and can change in a flexible way in the position of return water pipeline, in the actual installation, can be according to the simple operation installation operability and carry out the position selection, the device is connected and is crossed the one end mounted position after the clear water 6 pump and is different, the scope of preventing breaking that brings also is different, after the end is connected behind the clear water 6 valve of intaking of diaphragm 5 jar, as shown in the figure above, this position also can play diaphragm 5 jar diaphragm 5 and prevent breaking the effect, because three diaphragm 5 jar clear water 6 valves of intaking are opened and closed in proper order, install behind the clear water 6 valve of intaking of a certain diaphragm 5 jar, its protection scope is limited to only one diaphragm 5 jar of this clear water 6 valve control. The end is connected before the membrane 5 tank enters the clean water 6 valve after passing through the clean water 6 pump, and the device can play the purpose of breaking prevention for three isolation tanks at the same time.

For practical production, the position of one end of the water inlet pipe, which is arranged at the front of the water inlet valve of the clean water 6 after the clean water 6 pump, is lower in cost and larger in action range relative to the position of the water inlet valve of the clean water 6, and the position of the water inlet pipe does not influence the maintenance and inspection of the water inlet valve of the clean water 6. In summary, one end of the water inlet pipe of the device is connected to the position in front of the water inlet clean water 6 valve after passing through the clean water 6 pump. One end of the water return pipe is installed at a position which is relatively close to one end of the water inlet pipe as much as possible according to the convenience of operation.

After the installation position is determined, the installation work is started. Calibrating the perforating positions of the backwater pipe end and the water inlet pipe end by using a laser level meter, so that the centers of the two holes are on the same straight line; the tool is used for carrying out the perforating process on the calibration position, the model of the pressure-holding relief valve used by the device is AX742X-DN150, the nominal diameter is 150mm, and the perforating size is cut according to the used nominal diameter. The installation sequence adopted in the installation process is from bottom to top, firstly, a steel pipe with the diameter of 150mm and a certain length is cut, and a flange plate with the corresponding size is welded at one end; welding the cut steel pipe with the diameter of 150mm with a flange plate; connecting the part with a water return pipe preliminary opening by welding; docking and calibrating the pressure-holding relief valve with the part; then cutting a steel pipe with a certain length phi of 150mm, welding a flange plate with the same size, and according to the position of the water inlet pipe and the position of the hole opening; the part is connected between the pressure-holding relief valve and the clean water 6 pipeline, the anti-breaking device is installed, the tightness of the connecting pipeline between the parts and at the two ends of the device is strictly checked after the installation is completed, the safety of the device after the installation is ensured, and the device is installed.

The water diaphragm pump is a positive displacement pump, and its working principle is that liquid such as water is sucked, compressed and then discharged through the reciprocating motion of a piston in a pump cylinder. In the process, the rubber diaphragm plays a key role, is positioned between the pump cylinder and the suction chamber and is used for sealing and separating the two chambers to prevent liquid such as water from leaking out; thereby realizing the breaking prevention of the rubber diaphragm.

The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail in the present specification with reference to the above embodiments, the present utility model is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present utility model; all technical solutions and modifications thereof that do not depart from the spirit and scope of the utility model are intended to be included in the scope of the appended claims.

Claims (3)

1. The utility model provides a rubber diaphragm device is prevented breaking by water diaphragm pump, includes device jar body (1) to and valve body (7), its characterized in that, the inside of device jar body (1) is provided with thick liquid (3), device jar body (1) side is embedded to have clear water import and export (2), and the bottom then has inlayed thick liquid import and export (4), and thick liquid (3) with thick liquid import and export (4) interconnect, thick liquid (3) both sides cover one side diaphragm (5) outward, diaphragm (5) surface flow clear water (6), clear water (6) distribute in thick liquid (3) both sides also are located simultaneously inside device jar body (1), valve body (7) inside embedding has valve rod (8), the embedding has compression spring (9) on the outer pole surface of valve rod (8), the below of compression spring (9) is fixed with valve disc (11), valve rod (8) head and tail both ends are nested respectively have diaphragm clamp plate (10), and sealing pad (12), wherein sealing pad (12) and sealing pad (11) are installed between valve disc (7) both sides, and sealing pad (14) are provided with control room (14) top then under the control room (14), the diaphragm pressing plate (10) is positioned in the lower control chamber (15).

2. The anti-breaking rubber diaphragm device of the water diaphragm pump according to claim 1, wherein the connecting ends between the upper control chamber (14) and the lower control chamber (15) are respectively provided with a diaphragm seat (16), and the two diaphragm seats (16) are symmetrically arranged.

3. A water diaphragm pump anti-breaking rubber diaphragm device according to claim 2, characterized in that a diaphragm (17) is arranged between the diaphragm seats (16), the diaphragm (17) is positioned in the upper control chamber (14) and the lower control chamber (15), the central sections of the two are connected with a valve cover (18) above the valve body (7).