CN214464718U - Filtering isolation type double-membrane diaphragm pump - Google Patents

Abstract

The utility model provides a filter isolation type double-membrane diaphragm pump, which comprises a plunger mechanism, wherein the plunger mechanism is connected with one end of a diaphragm cavity, and the diaphragm cavity is connected with a slurry inlet pipeline and a slurry discharge pipeline through a three-way pipe; the communicating sections of the slurry inlet pipeline, the slurry discharge pipeline and the diaphragm cavity are provided with vertically arranged upper and lower straight-through gravity isolation pipelines, and the gravity isolation pipelines are transversely and fixedly provided with filter diaphragms; a diaphragm cavity is arranged above the gravity isolation pipeline; and a diaphragm is arranged in the diaphragm cavity. The utility model discloses two membrane diaphragm pumps, simple structure realizes easily, is showing and has promoted the diaphragm life-span, and the suction increases, and it is effective to filter, reduces cost of maintenance, for user dimension guarantor subtracts the burden, is fit for promoting.

Description

Filtering isolation type double-membrane diaphragm pump

Technical Field

The utility model belongs to the technical field of the piston direct actuation is used for carrying the volume pump body of ore pulp class fluid, concretely relates to filter isolation formula double membrane diaphragm pump.

Background

At present, a diaphragm pump disclosed in the specification of fig. 1 with the publication number CN1666023A is taken as an example in the design of a diaphragm pump for conveying abrasive media with particles, such as ore pulp. The diaphragm pump is connected to a drive unit through a plunger, and a working fluid is continuously pumped and conveyed in a certain frequency through the pumping reciprocating motion of the plunger under the pumping acting force, so that a certain amount of slurry is pumped and discharged by using the negative pressure formed in a diaphragm chamber. The problems existing in the use process of the diaphragm pump are that: because the conveying is carried out by abrasive fluid media such as ore pulp and the like, after the rubber diaphragm is used for a long time, the rubber diaphragm arranged in the diaphragm cavity is easy to generate friction loss, once the rubber diaphragm is abraded, part of ore pulp media can enter a hydraulic cylinder of the plunger mechanism under the action of large-pressure pumping and discharging, and the abrasion of a plunger in the plunger mechanism is further caused; at this time, the rubber diaphragm and the plunger mechanism are replaced, which seriously affects the service life of the device, and also causes the maintenance cost to rise, thus bringing great economic burden to users. In view of this, the following improvement is proposed.

Disclosure of Invention

The utility model provides a technical problem: the utility model provides a filter isolation formula double membrane diaphragm pump adopts and adds the gravity isolation pipeline between diaphragm chamber and pump drainage pipeline, adds the structural improvement of band hole formula filter diaphragm in the gravity isolation pipeline, solves pump drainage ore pulp class diaphragm pump diaphragm and damages under the prior art easily to and the ore pulp spills into the pneumatic cylinder after the diaphragm damages, and the interlinkage arouses the technical problem that plunger mechanism damaged.

The utility model adopts the technical proposal that: the filter isolation type double-membrane diaphragm pump comprises a plunger mechanism, wherein the plunger mechanism is connected with one end of a diaphragm cavity, and the diaphragm cavity is connected with a slurry inlet pipeline and a slurry discharge pipeline through a three-way pipe; the method is characterized in that: the communicating sections of the slurry inlet pipeline, the slurry discharge pipeline and the diaphragm cavity are provided with vertically arranged upper and lower straight-through gravity isolation pipelines, and the gravity isolation pipelines are transversely and fixedly provided with filter diaphragms; a diaphragm cavity is arranged above the gravity isolation pipeline; and a diaphragm is arranged in the diaphragm cavity.

In the above technical solution, further: the filtering diaphragm is a circular rubber diaphragm or a filter screen type diaphragm provided with a filtering through hole; the installation height of the filter membrane is higher than that of the slurry inlet pipeline.

In the above technical solution, further: the longitudinal section of the circular rubber diaphragm is of a wave-shaped structure, and a flange sealing ring is arranged at the outer side end of the circular rubber diaphragm.

In the above technical solution, further: the inner diameter of the gravity isolation pipeline is equal to the inner diameters of the three-way pipe, the slurry inlet pipeline and the slurry discharge pipeline.

In the above technical solution, further: the upper end of the gravity isolation pipeline is connected with the lower end of the diaphragm cavity; the lower end of the gravity isolation pipeline is connected with one end of a three-way pipe through a connecting bent pipe; the other two ends of the three-way pipe are respectively connected with a slurry discharge pipeline and a slurry inlet pipeline.

In the above technical solution, further: the diaphragm is coaxially and fixedly connected with the guide rod; a guide sleeve is coaxially sleeved outside the guide rod; the guide rod moves along the guide sleeve; the guide sleeve is coaxially and fixedly connected with the inner side wall of the cylinder body of the plunger mechanism into a whole.

In the above technical solution, further: the diaphragm is a solid round umbrella-shaped structure, and a sealing ring with a flange structure is arranged at the edge of the diaphragm of the round umbrella-shaped structure.

In the above technical solution, further: the slurry inlet pipeline is provided with a slurry inlet valve box; the slurry discharging pipeline is provided with a slurry discharging valve box; a slurry inlet check valve is vertically arranged in the slurry inlet valve box body; a slurry discharge check valve is vertically arranged in the slurry discharge valve box body; and the slurry inlet check valve and the slurry discharge check valve are alternately switched on or off.

In the above technical solution, further: the diaphragm cavity is provided with an exhaust port.

The utility model has the advantages compared with the prior art:

1. the gravity isolation pipeline 6 with gravity self-settling function is arranged below the diaphragm cavity and between the slurry inlet pipeline and the slurry outlet pipeline, and the filtering diaphragm 7 is arranged in the gravity isolation pipeline; the gravity isolation pipeline 6 forms a first heavy isolation, and the diaphragm cavity 2 arranged above the gravity isolation pipeline is a second isolation; filtering and blocking large particles, thorny and sharp ore pulp particles from entering a diaphragm cavity by utilizing the gravity of fluid; the diaphragm in the diaphragm cavity is effectively protected, the diaphragm and the plunger mechanism are prevented from being worn, the service life of key parts of the equipment is obviously prolonged, and the maintenance cost is reduced.

2. The utility model discloses pipeline pipe internal diameter is kept apart to gravity and three-way pipe, advances, arranges thick liquid pipeline diameter and equals, and the setting of pipeline is kept apart to gravity, and is less to extension pump drainage cycle influence, compact structure simultaneously.

3. The utility model discloses filter membrane 7 adopts the wave structural design, can effectively increase filter area than planar structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is an enlarged detail view of a portion of the diaphragm chamber of FIG. 1.

Fig. 3 is an enlarged detail schematic view of the gravity isolation pipe of fig. 1.

Detailed Description

Specific embodiments of the present invention will be described below with reference to fig. 1 to 3.

A filtering isolation type double-membrane diaphragm pump comprises a plunger mechanism 1. It should be noted that (as shown in fig. 1), the plunger mechanism 1 drives the plunger 1-1 to reciprocate through the driving unit, so that the working fluid performs a continuous pumping and conveying stroke at a certain frequency under a certain negative pressure pumping force, and a certain amount of slurry is pumped and discharged by the negative pressure formed in the diaphragm chamber 2.

In practical application, the filter isolation type double-membrane diaphragm pump comprises at least one set and at most five sets of oil cylinders 1-2 which comprise single-acting plungers 1-1 or double-acting pistons, connecting pipes filled with hydraulic oil are arranged in front of the oil cylinders 1-2, and the connecting pipes are connected with other pipeline structures in a flange or welding mode.

(as shown in the orientation of figure 1) the plunger cylinder body of the plunger mechanism 1 is connected with the cavity of a diaphragm cavity 2, the cavity of the diaphragm cavity 2 is preferably of a bent pipe structure, and the lower end of the diaphragm cavity 2 is connected with a slurry inlet pipeline 4 and a slurry outlet pipeline 5 through a three-way pipe 3. Through the turning structure, on one hand, the wearing of the diaphragm in the diaphragm cavity is prevented, and on the other hand, the longitudinal height of the equipment is reduced.

The utility model discloses the improvement on above-mentioned structure basis lies in: and vertically arranged upper and lower straight-through gravity isolation pipelines 6 are arranged among the pulp inlet pipeline 4, the pulp discharge pipeline 5 and the cavity of the diaphragm cavity 2.

An upper straight-through type gravity isolation pipeline 6 and a lower straight-through type gravity isolation pipeline are adopted, so that the structure is compact and the size is small on the one hand; on the other hand, the natural sedimentation of the solid particles in the fluid medium is realized by virtue of the height difference. It should be understood that any gravity isolation pipe 6 structure that can achieve the gravity isolation function is suitable for this case.

The gravity isolation pipeline 6 is fixedly provided with a filter membrane 7 in a transverse mode. For fully and further prevent that the great solid particle of quality from upwards moving and be close to diaphragm chamber 2, adopt at the measure of the transversal fixed mounting filter diaphragm 7 of gravity isolation pipeline 6, through the filtering action of filter diaphragm 7, active filtration, the actual use effect is: the clear water cover that is certain liquid level height above the gravity isolation pipeline 6 filter membrane 7, filter membrane 7 prevents fully that the particulate matter from getting into filter membrane 7 top, prevents contact wear diaphragm 9 in diaphragm chamber 2.

On the basis, a diaphragm cavity 2 is arranged above the gravity isolation pipeline 6; a diaphragm 9 is arranged in the diaphragm cavity. Therefore, the particles in the slurry are filtered and blocked by the filter membrane 7 in the lower gravity isolation pipeline 6, and the particles are prevented from approaching the membrane cavity 2 and wearing the membrane 9.

In order to realize the gravity self-settling function: the installation height of the membrane cavity 2 and the filtering membrane 7 is higher than that of the pulp inlet pipeline 4, so that large particles, thorns and sharp pulp particles are prevented from being precipitated in the pipeline.

On this basis, a diaphragm 9 is arranged in the diaphragm chamber 2. The diaphragm 9 is vertically installed, the diaphragm 9 is transversely moved and deformed just opposite to the inner concave surface of the pressurizing structure 8, and the deformation movement direction of the diaphragm 9 is perpendicular to the filtering diaphragm 7. That is, the diaphragm cavity 2 and the gravity isolation pipeline 6 are connected by adopting a bent pipe to form a right-angle turning structure, thereby further preventing the problem of friction loss of the diaphragm 9. Therefore, the preferred embodiment is more reliable and has a longer life than the solution of using a straight pipe to connect the diaphragm chamber 2 and the gravity isolation pipe 6. It should be understood that the embodiment in which the diaphragm chamber 2 is connected to the gravity isolation pipe using 6 straight pipes is an equivalent alternative to this case.

In the above embodiment, further: the filtering diaphragm 7 is a circular rubber diaphragm or a filter screen type diaphragm provided with filtering through holes. Preferably, a rubber filter membrane is used. The structural improvement of adopting the filter screen type diaphragm also falls into the protection scope of the scheme.

Preferably, the outer end of the filter membrane 7 of circular rubber structure is provided with a flange seal ring 701. The sealing and reliable connection of the flange joint is realized while the installation firmness of the filtering membrane 7 with the circular rubber structure is ensured.

In the above embodiment, further: the longitudinal section of the filtering membrane 7 is of a wave-shaped structure. Adopt wave structure to increase filter area, more efficient filters, thereby prevents more fully that large granule, area thorn, sharp-pointed ore pulp granule from getting into in the top diaphragm chamber 2.

In the above embodiment, further: the inner diameter of the gravity isolation pipeline 6 is equal to the inner diameters of the three-way pipe 3, the slurry inlet pipeline 4 and the slurry discharge pipeline 5. As previously described, the effect of the gravity isolation tube 6 on the pumping effective power is reduced.

In the above embodiment, further: the upper end of the gravity isolation pipeline 6 is connected with the lower end of the diaphragm cavity 2; the lower end of the gravity isolation pipeline 6 is connected with one end of the three-way pipe 3 through a connecting bent pipe 10; the connecting bent pipe 10 is additionally arranged, so that the effect of reducing the longitudinal height of the equipment is achieved, and the work of the equipment is reduced.

The other two ends of the three-way pipe 3 are respectively connected with a slurry discharge pipeline 5 and a slurry inlet pipeline 4. Generally, the slurry discharge pipe 5 is arranged above the three-way pipe 3, and the slurry inlet pipe 4 is arranged below the proximal end of the three-way pipe 3, so that the pumping is convenient.

In the above embodiment, further: a diaphragm 9 is arranged in the diaphragm cavity 2.

In the above embodiment, further: the diaphragm 9 is a solid round umbrella-shaped structure. Compared with the hollow structure in the prior art, the solid structure has higher structural strength and longer service life; the umbrella-shaped structure is more beneficial to the change of the volume of the diaphragm cavity 2.

In addition, the edge of the diaphragm 9 of the circular umbrella structure is provided with a sealing ring 901 of a flange structure. The sealing ring 901 facilitates the press-fit fixing of the diaphragm 9 on the one hand and plays a role in sealing on the other hand.

(as shown in fig. 2) the center of the diaphragm 9 is provided with a metal connecting piece which is coaxially, compositely and fixedly connected with the center of the rubber diaphragm into a whole; the center of the metal connecting piece is provided with a threaded connecting hole, and the metal connecting piece is tightly, coaxially and spirally matched with one end of the guide rod 2-1 through the threaded hole; the other end of the guide rod 2-1 is used for detecting the transverse moving position of the guide rod 2-1 along with the diaphragm 9.

The specific detection embodiment is as follows: perpendicular to the axial moving direction of the guide rod 2-1, the cylinder body of the oil cylinder 1-2 extends into the cylinder body and is provided with a sensor detection element in a sealing supporting mode. The detection end of the sensor detection element is accommodated in the cylinder body of the oil cylinder and used for detecting the transverse movement position of the guide rod 2-1 deformed along with the diaphragm 9, and then sending an electric signal to the controller to determine whether the pumping operation state is normal. The normal transverse moving stroke of the guide rod generally indicates that the pumping mechanism runs stably without damage.

In order to solve the problem of linear guide support of the guide rod 2-1: (as shown in fig. 2) a guide sleeve 2-3 is coaxially sleeved outside the guide rod 2-1; the guide rod 2-1 moves along the guide sleeve 2-3; the guide sleeve 2-3 is coaxially and fixedly connected with the inner side wall of the cylinder body of the oil cylinder of the plunger mechanism 1 into a whole. As shown in fig. 2, the guide sleeve 2-3 is fixedly connected with the cylinder body of the oil cylinder in an axial compression manner through a boss structure formed on the inner side wall of the cylinder body of the oil cylinder. The guide sleeves 2-3 are preferably cast.

In the above embodiment, further: the slurry inlet pipeline 4 is provided with a slurry inlet valve box 4-1; the slurry discharge pipeline 5 is provided with a slurry discharge valve box 5-1; a slurry inlet check valve is vertically arranged in the slurry inlet valve box 4-1; a slurry discharge check valve is vertically arranged in the slurry discharge valve box 5-1; and the slurry inlet check valve and the slurry discharge check valve are alternately switched on or off. Namely, when the slurry inlet check valve is communicated, the slurry discharge check valve is in a stop state; when the slurry discharge check valve is communicated, the slurry inlet check valve is in a stop state, so that periodic pumping and discharging operation only in one-way communication is realized.

Specifically, when upward suction force is formed in the diaphragm cavity 2 and the gravity isolation chamber 6, the slurry inlet check valve is moved upwards to be communicated, and the slurry discharge check valve is moved downwards to be stopped, so that a slurry suction stroke is formed; when the diaphragm cavity 2 and the gravity isolation chamber 6 push and extrude the discharge force downwards, the slurry inlet check valve moves downwards to be stopped, and the slurry discharge check valve moves upwards to be communicated, which is the slurry discharge stroke.

In the above embodiment, further: the diaphragm cavity is provided with an exhaust port. The exhaust port is used for explosion-proof exhaust when the pump body is started for the first time and in use.

The above description relates to pipe connection methods, which mainly include flange connection methods and welding connection methods.

The utility model discloses a theory of operation does: when the plunger 1-1 in the stopper mechanism 1 moves toward the right rear as oriented in fig. 1: the diaphragm 9 in the diaphragm cavity 2 changes to be in a state of being concave towards the right as shown in figure 1, at the moment, the volume of the diaphragm cavity 2 expands, the air pressure in the diaphragm cavity 2, the gravity isolating pipeline 6, the connecting bent pipe 10 and the three-way pipe 3 drops to form a suction force, the pulp inlet check valve in the pulp inlet pipeline 4 moves upwards, and the pulp inlet pipeline 4 sucks ore pulp; the pulp discharge check valve moves downwards, the discharge port of the pulp discharge pipeline 5 is blocked and plugged in a one-way mode, and the pulp flows into the three-way pipe 3 from the lower end of the pulp inlet pipeline 4; then the plunger 1-1 in the stopper mechanism 1 moves toward the left: the diaphragm 9 in the diaphragm cavity 2 deforms and protrudes towards the left side; the volume of the diaphragm cavity 2 is reduced to generate downward pushing and discharging pressure, the pulp inlet check valve in the pulp inlet pipeline 4 moves downwards, the pulp inlet check valve is blocked in a one-way mode to block a suction port of the pulp inlet pipeline 4, the pulp discharge check valve of the pulp discharge pipeline 5 moves upwards to conduct a discharge port, and pulp is discharged from the left side of the pulp discharge pipeline 5 to complete a pumping and discharging period. So as to reciprocate and continuously pump and discharge the ore pulp. Because be equipped with vertical gravity between three-way pipe 3 and the diaphragm chamber 2 and keep apart pipeline 6, and be equipped with filtering diaphragm 7 in the gravity keeps apart pipeline 6, filtering diaphragm 7 highly is higher than the height of arranging thick liquid pipeline 5, consequently, clearer thick liquid can surge above filtering diaphragm 7, and large granule, hard or barbed ore pulp is kept off by filtering diaphragm 7, does not directly enter into diaphragm chamber 2, prevents that diaphragm 9 from damaging, thereby prolong the life-span of diaphragm 9 and plunger 1-1, the extension maintenance cycle, reduce the maintenance expenditure.

From the above description it can be found that: in the utility model, a gravity isolation pipeline 6 with gravity self-settling function is arranged between the lower part of the diaphragm cavity 2 and the slurry inlet and outlet pipelines, and a filtering diaphragm 7 is arranged in the gravity isolation pipeline 6; filtering and blocking large particles, thorny and sharp ore pulp particles from entering the diaphragm cavity 2 by utilizing the gravity of the fluid; effectively protect diaphragm 9 in diaphragm chamber 2, prevent diaphragm 9 wearing and tearing, prolong equipment life and diaphragm life, reduce cost of maintenance.

The utility model discloses 1 horizontal installation of plunger mechanism, filtering diaphragm 7 and diaphragm 9 mutually perpendicular utilize the turn structure promptly the return bend to be connected to and be equivalent to the protective structure combined action of "two diaphragms", fully prevent particulate matter wearing and tearing diaphragm 9, extension diaphragm 9 life.

The utility model discloses diaphragm chamber 2 has inside sunken pressure intensifying structure 8, under the power certain circumstances, can effectively promote suction extraction suction effort.

The utility model discloses filter membrane 7 adopts the wave structural design, can effectively increase filter area than planar structure.

The utility model discloses 6 pipe internal diameters of pipeline are kept apart to gravity and three-way pipe, advance, arrange the thick liquid pipeline diameter and equal, and the setting of pipeline 6 is kept apart to gravity, compact structure, and the volume is less.

The utility model discloses the gravity is kept apart 6 and is formed first heavy isolation, the diaphragm chamber that the gravity was kept apart 6 tops and is equipped with is the second way isolation, and diaphragm chamber 2 and gravity keep apart the mounting height that 7 mounting heights of filter diaphragm in the pipeline are higher than the mounting height of advancing thick liquid pipeline 4, consequently the thick liquid can not get into diaphragm chamber 2, only the top of filter diaphragm 7 has a small amount of ore pulp or comparatively limpid clear water in the pipeline 6 is kept apart to gravity, the appearance of diaphragm 9 friction loss problem in diaphragm chamber 2 has fully effectively been avoided, the life-span of equipment key part is showing the extension.

To sum up, this novel double-membrane diaphragm pump, simple structure realizes easily, is showing and has promoted the diaphragm life-span, and the suction increases, and it is effective to filter, reduces cost of maintenance, for the user dimension is protected and is subtracted burden, is fit for promoting.

It should be understood that although the present description is described in terms of one embodiment, this embodiment does not include only a single embodiment, but such description is merely for clarity, and those skilled in the art will recognize that the embodiments described in this embodiment can be combined as appropriate to form other embodiments as would be understood by those skilled in the art.

The above-mentioned preferred embodiments are not intended to limit the scope of the present invention, so that all equivalent changes made in the claims of the present invention are included in the claims of the present invention; the components and materials used in the above examples are commercially available unless otherwise specified.

Claims (9)

1. The filter isolation type double-membrane diaphragm pump comprises a plunger mechanism (1), wherein the plunger mechanism (1) is connected with one end of a diaphragm cavity (2), and the diaphragm cavity (2) is connected with a slurry inlet pipeline (4) and a slurry discharge pipeline (5) through a three-way pipe (3); the method is characterized in that: the communicating sections of the slurry inlet pipeline (4), the slurry discharge pipeline (5) and the diaphragm cavity (2) are provided with vertically arranged vertical straight-through gravity isolation pipelines (6), and the gravity isolation pipelines (6) are transversely and fixedly provided with filter diaphragms (7); a diaphragm cavity (2) is arranged above the gravity isolation pipeline (6); a diaphragm (9) is arranged in the diaphragm cavity (2).

2. The filter-isolation type double membrane diaphragm pump according to claim 1, wherein: the filtering diaphragm (7) is a circular rubber diaphragm or a filter screen type diaphragm provided with a filtering through hole; the installation height of the filter membrane (7) is higher than that of the slurry inlet pipeline (4).

3. The filter-isolation type double membrane diaphragm pump according to claim 2, wherein: the longitudinal section of the circular rubber diaphragm is of a wave-shaped structure, and a flange sealing ring (701) is arranged at the outer side end of the circular rubber diaphragm.

4. The filter-isolation type double membrane diaphragm pump according to claim 1, wherein: the inner diameter of the gravity isolation pipeline (6) is equal to the inner diameters of the three-way pipe (3), the slurry inlet pipeline (4) and the slurry discharge pipeline (5).

5. The filter-isolation type double membrane diaphragm pump according to claim 4, wherein: the upper end of the gravity isolation pipeline (6) is connected with the lower end of the diaphragm cavity (2); the lower end of the gravity isolation pipeline (6) is connected with one end of the three-way pipe (3) through a connecting bent pipe (10); the other two ends of the three-way pipe (3) are respectively connected with a slurry discharge pipeline (5) and a slurry inlet pipeline (4).

6. The filter-isolation type double membrane diaphragm pump according to claim 1, wherein: the diaphragm (9) is coaxially and fixedly connected with the guide rod (2-1); a guide sleeve (2-3) is coaxially sleeved on the outer side of the guide rod (2-1); the guide rod (2-1) moves along the guide sleeve (2-3); the guide sleeve (2-3) is coaxially and fixedly connected with the inner side wall of the cylinder body of the oil cylinder of the plunger mechanism (1) into a whole.

7. The filtration isolation type double membrane diaphragm pump according to claim 1 or 6, wherein: the diaphragm (9) is of a solid round umbrella-shaped structure, and a sealing ring (901) with a flange structure is arranged at the edge of the diaphragm (9) of the round umbrella-shaped structure.

8. The filter-isolation type double membrane diaphragm pump according to claim 1, wherein: the slurry inlet pipeline (4) is provided with a slurry inlet valve box (4-1); the slurry discharge pipeline (5) is provided with a slurry discharge valve box (5-1); a slurry inlet check valve is vertically arranged in the slurry inlet valve box (4-1) box body; a slurry discharge check valve is vertically arranged in the slurry discharge valve box (5-1) box body; and the slurry inlet check valve and the slurry discharge check valve are alternately switched on or off.

9. The filter-isolation type double membrane diaphragm pump according to claim 1, wherein: the diaphragm cavity (2) is provided with an exhaust port.

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