CN221074603U - Device for filtering sand at front end of displacement pump - Google Patents

Abstract

The utility model discloses a device for filtering sand at the front end of a volumetric pump, which comprises a volumetric pump body, wherein a filtering device body is arranged at the liquid inlet end of the volumetric pump body, two first filter screens are arranged in the filtering device body, a sand and stone discharge port is arranged at the bottom of the filtering device body at one side of each first filter screen, a secondary filter tank is fixed at the bottom of the filtering device body, a petroleum collecting cavity is arranged at the bottom of the secondary filter tank, a second filter screen is arranged in the secondary filter tank above the petroleum collecting cavity, and a sand and stone cleaning structure for cleaning sand grains on the upper surface of the second filter screen is arranged at one end of the interior of the secondary filter tank.

Description

Device for filtering sand at front end of displacement pump

Technical Field

The utility model relates to the technical field of pump filtration, in particular to a device for filtering sand at the front end of a volumetric pump.

Background

The positive displacement pump is a pump which makes the volume of a plurality of working cavities in the pump body periodically change by means of reciprocating motion or rotary motion of working pieces such as pistons, plungers, diaphragms, gears or blades in the pump body, and alternately sucks and discharges liquid, and has the characteristics of low revolution, high efficiency, strong self-priming capability, stable operation, preheating of part of the pump and the like.

Disclosure of utility model

The utility model aims to provide a sand filtering device at the front end of a volumetric pump, which aims to solve the problems that the device is difficult to clean filtering residues in the prior art, the filtering residues are increased, the meshes are blocked and cannot work continuously, the cleaned residues are difficult to filter resources, and the waste of the resources is easy to cause.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a device of positive displacement pump front end filtration sand, includes the positive displacement pump body, filter equipment body is installed to the feed liquor end of positive displacement pump body, the inside of filter equipment body is provided with two filter screens one, filter equipment body bottom of filter screen one side is provided with the grit discharge port, the bottom mounting of filter equipment body has the secondary filter tank, the bottom of secondary filter tank is provided with the oil collecting chamber, the internally mounted of the secondary filter tank of oil collecting chamber top has the filter screen two, the inside one end of secondary filter tank is installed and is used for cleaning the grit clearance structure of two upper surface sand grains of filter screen, install the motor that is used for driving grit clearance structure work on the outer wall of secondary filter tank one side, install grit clearance case on the secondary filter tank outer wall of motor below, the inside of grit clearance case is provided with grit and holds case and petroleum runner, the filter screen three is installed to the bottom of secondary filter tank opposite side, install the micro diaphragm pump that is used for extracting oil collecting chamber inside petroleum on the outer wall, the feed liquor end of micro diaphragm pump extends to the inside filter pump body's the extension to the inside diaphragm pump.

Preferably, the grit clearance structure is including installing the lead screw at the motor output, and the one end of lead screw extends to the inside of secondary filter tank and rotates with the inner wall of secondary filter tank one side to be connected, the screw thread department of lead screw surface one end installs the nut pair, the bottom mounting of nut pair has the clearance board, the bottom of clearance board and the mutual butt of upper surface of filter screen two.

Preferably, the outer wall of one side of the secondary filter box, which is close to the sand and stone cleaning box, is provided with a sand outlet for the cleaning plate to sweep out sand and stone, and the inner wall of one side of the secondary filter box is provided with a liquid guide port for communicating the petroleum flow passage and the petroleum collecting cavity.

Preferably, the sand and stone accommodating box is slidably mounted in the sand and stone cleaning box, a through hole is formed in the outer wall of one side, close to the sand and stone outlet, of the sand and stone accommodating box, a handle is mounted on the outer wall of the other side of the sand and stone accommodating box, and one end of the handle penetrates through the outer portion of the sand and stone cleaning box.

Preferably, the level of the liquid guide port is lower than that of the third filter screen.

Preferably, the first filter screen, the second filter screen and the third filter screen are all stainless steel filter screens, and the apertures of the first filter screen, the second filter screen and the third filter screen are three millimeters to five millimeters in zero point.

Compared with the prior art, the utility model has the beneficial effects that: this device of positive displacement pump front end filter sand is through being provided with the structure of mutually supporting such as grit clearance structure, grit clearance case, to during oil filtration, the grit falls into on the filter screen II through the filtration of double-deck filter screen I, the oil that adheres to on the grit is kept stand, get into in the oil collection chamber, this can separate out the oil, reduce the waste of oil, avoid the waste of resource, also can in time clear up the grit that filters out, avoid the grit accumulation to reduce the work efficiency of positive displacement pump or lead to work stagnation because of the jam, thereby promote work efficiency, the grit clearance structure is swept the grit on the filter screen II to in the grit holds the case later, the filter screen is three to oil after the oil secondary filtration, the oil on the grit is gone into the oil runner again from the oil runner and is collected the chamber, to the secondary filtration of grit, make the oil that adheres to on the grit fully collected as far as possible, the waste of resource has been reduced again, when the oil that collects in the oil collection chamber is more, the staff micro diaphragm pump draws the oil in the oil collection chamber, with the grit in the oil collection chamber, the suction device carries out the filter device in the oil collection chamber, the flexible pump has been avoided this flexible, the problem has been solved and the filter device has not been continued to be accumulated in the normal pump volume.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic view of a front cross-sectional structure of the filter body of the present utility model;

FIG. 3 is a schematic side view of the filter device of the present utility model;

fig. 4 is an enlarged schematic view of the structure of fig. 2a according to the present utility model.

In the figure: 1. a positive displacement pump body; 2. a filter body; 3. a first filter screen; 4. a sand outlet; 5. a motor; 6. a sand and stone cleaning structure; 601. a screw rod; 602. a nut pair; 603. a cleaning plate; 7. a secondary filter box; 701. a second filter screen; 702. a petroleum collection chamber; 703. a sand outlet; 8. sand and stone cleaning box; 801. a sand-stone accommodating box; 802. a petroleum runner; 803. a third filter screen; 804. a liquid guide port; 9. a miniature diaphragm pump.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides a device of positive displacement pump front end filtering sand, including positive displacement pump body 1, filter equipment body 2 is installed to the feed liquor end of positive displacement pump body 1, filter equipment body 2's inside is provided with two filter screens one 3, filter equipment body 2 bottom of filter screen one 3 sides is provided with grit discharge port 4, filter equipment body 2's bottom fixed with secondary filter tank 7, secondary filter tank 7's bottom is provided with oil collecting chamber 702, the internally mounted of secondary filter tank 7 above oil collecting chamber 702 has filter screen two 701, the grit clearance structure 6 that is used for cleaning the sand grain of filter screen two 701 upper surface is installed to one end in secondary filter tank 7, grit clearance structure 6 is including installing the lead screw 601 at motor 5 output, the one end of lead screw 601 extends to the inside of secondary filter tank 7 and rotates with the inner wall of secondary filter tank 7 one side to be connected, nut pair 602 is installed to the screw thread department of lead screw 601 surface one end, the bottom of nut pair 602 is fixed with clearance board 603, the bottom of clearance board 603 and the upper surface of two filter screens 701 butt each other;

After the motor 5 is started, the screw rod 601 is driven to further drive the nut pair 602 to rotate, so that the cleaning plate 603 is driven to move back and forth above the second filter screen 701, and the purpose of cleaning sand and stone is achieved;

A motor 5 for driving the sand and stone cleaning structure 6 to work is arranged on the outer wall of one side of the secondary filter box 7, a sand and stone cleaning box 8 is arranged on the outer wall of the secondary filter box 7 below the motor 5, a sand outlet 703 for cleaning sand and stone to be swept out by the cleaning plate 603 is arranged on the outer wall of one side of the secondary filter box 7, and a liquid guide port 804 for communicating the petroleum flow passage 802 and the petroleum collecting cavity 702 is arranged on the inner wall of one side of the secondary filter box 7;

The sand outlet 703 can clean out sand in the filter device body 2 in time, so that the sand accumulation is avoided, the working efficiency of the volumetric pump is reduced, or the filter device body 2 is blocked, so that the working stagnation is avoided, the working efficiency is improved, the petroleum attached to the sand can be kept still and separated, the loss of the petroleum is reduced, and the waste of resources is avoided;

The inside of the sand and stone cleaning box 8 is provided with a sand and stone accommodating box 801 and a petroleum runner 802, a third filter screen 803 is arranged at the bottom end of the sand and stone accommodating box 801, the level of a liquid guide port 804 is lower than that of the third filter screen 803, the sand and stone accommodating box 801 is slidably arranged in the sand and stone cleaning box 8, a through hole is formed in the outer wall of one side, close to the sand and stone outlet 703, of the sand and stone accommodating box 801, a handle is arranged on the outer wall of the other side of the sand and stone accommodating box 801, and one end of the handle penetrates through the outside of the sand and stone cleaning box 8;

the sliding installation of the sand accommodating box 801 can enable sand to be used continuously after being dumped, sand can be cleaned flexibly, accumulation of sand in the device is reduced, the phenomenon that the device cannot work normally due to blockage is avoided, the problem of sand abrasion of a rubber rotor of the displacement pump is solved, and the service life and the working stability of the displacement pump are improved;

Stainless steel filter screens are adopted for the first filter screen 3, the second filter screen 701 and the third filter screen 803, the apertures of the first filter screen 3, the second filter screen 701 and the third filter screen 803 are three millimeters to five millimeters in zero, a micro diaphragm pump 9 for extracting oil in the oil collecting cavity 702 is arranged on the outer wall of the other side of the secondary filter box 7, the liquid inlet end of the micro diaphragm pump 9 extends to the interior of the secondary filter box 7, and the liquid outlet end of the micro diaphragm pump 9 extends to the interior of the filter device body 2;

The first filter screen 3, the second filter screen 701 and the third filter screen 803 are used for standing and separating out the petroleum attached to sand and stone, and the micro diaphragm pump 9 is used for pumping the filtered petroleum again, so that the waste of petroleum resources is reduced, and the petroleum quality is improved.

When the embodiment of the application is used, firstly, a worker installs the device at the suction end of the displacement pump, when the displacement pump starts to work, petroleum enters the filter device body 2 from a pipeline, sand and stone is filtered by the first filter screen layer 3 and falls onto the second filter screen 701 in the secondary filter box 7 through the sand and stone discharge port 4, and the petroleum attached to the sand and stone is allowed to stand and drip into the petroleum collection cavity 702, so that the sand and stone in the filter device body 2 can be cleaned in time, the sand and stone accumulation is avoided, the work efficiency of the displacement pump is reduced or the filter device body 2 is blocked, so that the work stagnation is caused, the work efficiency is improved, the petroleum attached to the sand and stone can be kept stand and separated, the loss of petroleum is reduced, the waste of resources is avoided, then the worker starts the sand and stone cleaning structure 6 to sweep the sand and stone falling onto the second filter screen 701 into the sand holding box 801, through the filtration of the filter screen III 803 at the bottom end of the sand and stone holding box 801, the petroleum attached to the sand and stone enters the petroleum runner 802 again, the sand and stone is filtered again, the petroleum attached to the sand and stone is collected and extracted as much as possible, the waste of resources is reduced again, then the petroleum in the petroleum runner 802 flows into the petroleum collecting cavity 702 along the inclined inner wall through the liquid guide port 804, when the petroleum collected in the petroleum collecting cavity 702 is more, the staff starts the micro diaphragm pump 9 to extract the petroleum in the petroleum collecting cavity 702, the petroleum in the petroleum collecting cavity 702 is extracted to the filtering device body 2 to continue to suck the petroleum, the filtered petroleum is extracted again, the petroleum yield is improved, the petroleum has the quality improving effect, when the sand and stone are more, the staff can extract the sand and stone holding box 801, and the sand and stone are used continuously, the sand and stone cleaning device has the advantages that sand and stone can be flexibly cleaned, the problem that sand and stone are accumulated in the device is solved, the phenomenon that the device is blocked to cause abnormal work is avoided, the problem of sand and stone abrasion of the rubber rotor of the displacement pump is solved, and the service life of the displacement pump and the working stability of the displacement pump are improved.

Claims (6)

1. The utility model provides a device of positive displacement pump front end filter sand which characterized in that: including positive displacement pump body (1), filter equipment body (2) are installed to the feed liquor end of positive displacement pump body (1), the inside of filter equipment body (2) is provided with two filter screens (3), filter equipment body (2) bottom of filter screen (3) one side is provided with grit discharge port (4), the bottom mounting of filter equipment body (2) has secondary filter tank (7), the bottom of secondary filter tank (7) is provided with oil collecting chamber (702), the internally mounted of secondary filter tank (7) of oil collecting chamber (702) top has filter screen two (701), the grit clearance structure (6) that are used for cleaning filter screen two (701) upper surface sand grains are installed to the one end of secondary filter tank (7), install motor (5) that are used for driving grit clearance structure (6) work on the outer wall of secondary filter tank (7) of motor (5) below, install grit clearance case (8) inside the inside of clearance case (7) is provided with oil collecting chamber (802) and grit case (803) hold in the passageway (801), oil collecting chamber (803) holds three, install miniature diaphragm pump (9) that are used for extracting the inside oil of oil collection chamber (702) on the outer wall of secondary filter tank (7) opposite side, the feed liquor end of miniature diaphragm pump (9) extends to the inside of secondary filter tank (7), the liquid outlet end of miniature diaphragm pump (9) extends to the inside of filter equipment body (2).

2. A device for filtering sand at the front end of a volumetric pump as defined in claim 1, wherein: the sand and stone cleaning structure (6) is including installing lead screw (601) at motor (5) output, and the one end of lead screw (601) extends to the inside of secondary filter tank (7) and rotates with the inner wall of secondary filter tank (7) one side to be connected, screw thread department of lead screw (601) surface one end installs nut pair (602), the bottom mounting of nut pair (602) has clearance board (603), the bottom of clearance board (603) and the upper surface mutual butt of filter screen two (701).

3. A device for filtering sand at the front end of a volumetric pump according to claim 2, characterized in that: the utility model discloses a grit cleaning box, including grit cleaning box (8), secondary filter box (7), be provided with on the outer wall of one side that is close to grit cleaning box (8) and supply cleaning plate (603) to sweep out grit export (703), be provided with on the inner wall of secondary filter box (7) one side and be used for communicating drain mouth (804) of petroleum runner (802) and petroleum collection chamber (702).

4. A device for filtering sand at the front end of a volumetric pump as defined in claim 1, wherein: the sand and stone accommodating box (801) is slidably mounted inside the sand and stone cleaning box (8), a through hole is formed in the outer wall of one side, close to the sand and stone outlet (703), of the sand and stone accommodating box (801), a handle is mounted on the outer wall of the other side of the sand and stone accommodating box (801), and one end of the handle penetrates through the outer portion of the sand and stone cleaning box (8).

5. A positive displacement pump front end sand filtering device according to claim 3, wherein: the level of the liquid guide opening (804) is lower than that of the filter screen III (803).

6. A device for filtering sand at the front end of a volumetric pump as defined in claim 1, wherein: the first filter screen (3), the second filter screen (701) and the third filter screen (803) are all stainless steel filter screens, and the apertures of the first filter screen (3), the second filter screen (701) and the third filter screen (803) are three millimeters to five millimeters in zero point.