CN216407140U - Piston fluid pump - Google Patents

Abstract

The utility model provides a piston fluid pump, which relates to the technical field of fluid machinery, wherein an output shaft of a motor body is movably connected with a connecting rod structure, one end of the connecting rod structure, which is far away from the output shaft of the motor body, is detachably connected with the piston body, the piston body is embedded in a cylinder body, one end of the cylinder body, which is far away from the motor body, is provided with a valve body, the valve body is in flange connection with the cylinder body, a water inlet valve seat and a water discharge valve seat are respectively arranged inside two ends of the valve body, a water inlet connector and a water discharge connector are fixedly bolted at two ends of the valve body, a suction valve and a discharge valve are respectively embedded inside the water inlet valve seat and the water discharge valve seat, and the suction valve and the discharge valve are respectively correspondingly attached to the water inlet valve seat and the water discharge valve seat. The product designs a novel piston fluid pump, the water displacement is large, the lift is high and can reach more than 10 meters, and the defect of low lift of a miniature centrifugal pump is overcome; meanwhile, the valve body is short, the flow pollution discharge performance is strong, and the problems of poor pollution discharge performance and easy blockage of the diaphragm type micropump are solved.

Description

Piston fluid pump

Technical Field

The utility model relates to the technical field of fluid machinery, in particular to a piston fluid pump.

Background

Fluid pumps are generally used in a large number of heat management systems, and a micro piston fluid pump as a fluid pressurization conveying device also has a wide application scene and is commonly used in the refrigeration industry. At present, the diaphragm pump and the centrifugal pump are mainly diaphragm type micro fluid pumps, and a piston in the fluid pump is driven to do reciprocating motion by the rotation of a motor to drive a connecting rod transmission device, so that air in a pump cavity is compressed and stretched, and pressure difference is formed to pump fluid in or out. In addition, the centrifugal fluid pump is a process that the motor rotates to drive the impeller to rotate, and fluid is continuously sucked and discharged under the action of centrifugal force.

However, in the prior art, the diaphragm type micropump has the problems of complex flow channel, poor pollution discharge performance and easy blockage; the sewage discharge performance of the micro centrifugal pump is superior to that of a diaphragm type micro pump, but the micro centrifugal pump has the defect of low pump lift matched with the specification.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a piston fluid pump.

In order to achieve the purpose, the utility model adopts the following technical scheme: a piston fluid pump comprises a motor body, wherein the motor body is bolted and fixed on the top surface of a motor support, the motor support is bolted and fixed on the top surface of a piston pump base, an output shaft of the motor body is movably connected with a connecting rod structure, the connecting rod structure is positioned in the motor support, one end of the connecting rod structure, which is far away from the output shaft of the motor body, is detachably connected with a piston body, the piston body is embedded in a cylinder body and is attached to the cylinder body, the inner wall of the piston body and the inner wall of the cylinder body are sealed, one end of the cylinder body, which is far away from the motor body, is provided with a valve body, the valve body is connected with the cylinder body through a flange, the joint of the cylinder body and the valve body is sealed through a cylinder body sealing ring, the inner parts of the two ends of the valve body are respectively provided with a water inlet valve seat and a water outlet seat, which are respectively and correspondingly arranged at the water inlet end and the water outlet end of the valve body, and intake valve seat and drainage valve seat all do sealing process with the valve body inner wall, the end of intaking of valve body corresponds respectively with the play water end and is provided with water supply connector and drainage joint, and water supply connector and drainage joint all with the tip bolt of valve body fixed, and water supply connector and drainage joint all do sealing process with the valve body, intake valve seat and drainage valve seat's inside has inlayed suction valve and discharge valve respectively, and suction valve and discharge valve correspond respectively and intake valve seat and drainage valve seat laminating.

Preferably, the connecting rod structure is including inlaying the initiative connecting rod of locating motor body output shaft surface, the terminal swing joint of initiative connecting rod has driven connecting rod, the junction of initiative connecting rod and driven connecting rod inlays and is equipped with the screw bearing, and driven connecting rod passes through screw bearing and initiative connecting rod swing joint. The two-stage transmission connecting rod structure rotates through the screw bearing, and the smooth reciprocating motion of the piston body is guaranteed.

Preferably, the suction valve and the discharge valve are both check valves, and the suction valve and the discharge valve are both umbrella-shaped as a whole. The design of umbrella-shaped check valve can guarantee that the water body can not flow back when the piston reciprocates, so that the water body in the valve body can be continuously pressurized, the flow is guaranteed, and the lift is high enough.

Preferably, lubricating grease storage cavity has been seted up to piston body surface circumference, and lubricating grease storage cavity is used for storing lubricating grease for lubricated piston. Lubricating grease can be directly deposited in the lubricating grease storage cavity for lubrication, friction loss is reduced, piston wear efficiency is reduced, and the service life of the piston is prolonged.

Preferably, grease cotton can also be directly embedded in the lubricating grease storage cavity, and lubricating grease is supplied through the grease cotton to provide lubrication. Similarly, the grease cotton can be embedded in the grease storage cavity, lubricating grease is supplied by the grease cotton, the loss of the lubricating grease is small, and the period of secondary addition is long.

Preferably, a piston sealing ring is embedded in the surface of the piston body, and the piston body is sealed with the cylinder body through the piston sealing ring; the piston sealing ring can be single-ring for single sealing or double-ring for double sealing. The piston sealing ring is sealed, so that the sealing performance is good, and the piston sealing ring is convenient to replace after being worn; meanwhile, the sealing performance of the piston can be improved by a double-sealing mode.

Preferably, the end face of the piston body is provided with a slot, the connecting rod structure penetrates through the slot, a piston pin is embedded in one end, embedded in the slot, of the connecting rod structure, the shape of the piston pin is the same as that of the slot, and the tail end of the driven connecting rod is embedded with the piston pin. The piston pin is inserted into the slot matched with the piston pin, so that the connecting rod structure and the piston body are installed and fixed; when wearing and tearing appear, only need at piston body internal rotation connecting rod structure for piston pin and slot align, can follow the connecting rod structure surface and take off piston body.

Preferably, the space between the water inlet valve seat and the valve body and the space between the water discharge valve seat and the valve body are sealed by valve seat sealing rings; the water inlet valve seat and the valve body and the water discharge valve seat and the valve body can be fixed by ultrasonic welding. The sealing mode of the sealing ring has better detachability, and the ultrasonic welding mode has better sealing effect.

Preferably, the water inlet sealing ring is embedded between the water inlet valve seat and the water inlet connector for sealing treatment, and the water drainage sealing ring is embedded between the water drainage valve seat and the water drainage connector for sealing treatment. The sealing ring is sealed, so that the waterproof type of the valve seat and the joint is ensured, and water leakage is prevented.

Advantageous effects

1. In the prior art, a diaphragm type micropump has a complex flow channel, poor pollution discharge performance and easy blockage, and a micro centrifugal pump has the defect of low lift, aiming at the problems, the product designs a novel piston fluid pump which drives a connecting rod structure to rotate through a motor body and drives a piston body to reciprocate in a cylinder body through the transmission of the connecting rod structure, so that a volume difference is generated in the cylinder body due to the reciprocating motion, the pressure in the cylinder body is adjusted, the effect of water suction and re-drainage of the valve body is achieved, a suction valve and a discharge valve are all one-way valves, the whole pump is umbrella-shaped, the water discharge capacity is large, the flow can reach 30L/h, the lift is high and can reach more than 10 m, and the defect of low lift of the micro centrifugal pump is overcome; meanwhile, the product has the advantages of short valve body, correspondingly short flow channel, large drain hole and strong pollution discharge performance, and solves the problems of complicated flow channel, poor pollution discharge performance and easy blockage of the diaphragm type micropump. The design of the umbrella-shaped check valve can ensure that the water body does not flow back when the piston reciprocates, so that the water body in the valve body can be continuously pressurized, the flow is ensured, and the lift is ensured to be high enough.

2. According to the utility model, the lubricating grease can be directly stored in the lubricating grease storage cavity for lubrication, so that the friction loss is reduced, the piston wear efficiency is reduced, and the service life of the piston is prolonged. Similarly, the grease cotton can be embedded in the grease storage cavity, lubricating grease is supplied by the grease cotton, the loss of the lubricating grease is small, and the period of secondary addition is long.

3. According to the utility model, the piston body and the cylinder body are sealed by the piston sealing ring, so that the sealing property is good, and the piston body is convenient to replace after being worn; meanwhile, the sealing performance of the piston can be improved by a double-sealing mode.

4. According to the utility model, the piston pin and the piston body are combined, so that the piston body can be conveniently and rapidly mounted and dismounted, and the piston pin can be inserted through the slot matched with the piston pin to mount and fix the connecting rod structure and the piston body; when wearing and tearing appear, only need at piston body internal rotation connecting rod structure for piston pin and slot align, can follow the connecting rod structure surface and take off piston body.

5. According to the utility model, the valve seat and the valve body can be sealed by the sealing ring or fixed by ultrasonic welding, wherein the sealing ring is good in detachability in a sealing mode, and the sealing effect is good in an ultrasonic welding mode.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view in elevation of the present invention;

FIG. 3 is a schematic diagram of the manner in which the motor body drives the piston body via the connecting rod structure according to the present invention;

FIG. 4 is a schematic view of the connection between the connecting rod structure and the piston body according to the present invention;

FIG. 5 is a schematic view of the combination of the cylinder body and the valve body according to the present invention;

FIG. 6 is an exploded view of the internal structure of the valve body in the present invention;

FIG. 7 is a schematic structural diagram of another embodiment of the present invention;

fig. 8 is an isometric schematic view of another embodiment of the present invention.

Illustration of the drawings:

1. a motor body; 2. a motor support; 3. a piston pump base; 4. a connecting rod structure; 41. a driving connecting rod; 42. a driven connecting rod; 43. a screw bearing; 5. a piston pin; 6. a piston seal ring; 7. a piston body; 7a, a slot; 7b, a lubricating grease storage cavity; 8. a cylinder body; 9. a cylinder body sealing ring; 10. a water inlet joint; 11. a suction valve; 12. a water inlet sealing ring; 13. a water inlet valve seat; 14. a valve seat sealing ring; 15. a valve body; 16. a discharge valve; 17. a water discharge joint; 18. a drainage sealing ring; 19. a drain valve seat.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Specific example 1:

referring to fig. 1 to 6, a piston fluid pump includes a motor body 1, wherein the motor body 1 may be powered by dc or ac, and multiple power supply modes are selected, so that the pump has strong universality; the motor body 1 is bolted and fixed on the top surface of the motor support 2, the motor support 2 is bolted and fixed on the top surface of the piston pump base 3, the output shaft of the motor body 1 extends along a longitudinal straight line, the output shaft of the motor body 1 is movably connected with the connecting rod structure 4, the connecting rod structure 4 is positioned inside the motor support 2, one end of the connecting rod structure 4, which is far away from the output shaft of the motor body 1, is detachably connected with the piston body 7, the piston body 7 is embedded in the cylinder body 8 and is attached with the cylinder body 8, the inner walls of the piston body 7 and the cylinder body 8 are sealed, the motor body 1 drives the piston body 7 to reciprocate in the cylinder body 8 through the connecting rod structure 4, one end of the cylinder body 8, which is far away from the motor body 1, is provided with the valve body 15, the valve body 15 is in flange connection with the cylinder body 8, and the joint of the cylinder body 8 and the valve body 15 is sealed through the cylinder sealing ring 9, the inside of 15 both ends of valve body is provided with into disk seat 13 and drainage disk seat 19 respectively, and into disk seat 13 and drainage disk seat 19 correspond respectively and set up the end of intaking and going out at valve body 15, and intake disk seat 13 and drainage disk seat 19 all do the sealing treatment with 15 inner walls of valve body, the end of intaking and going out of valve body 15 correspond respectively and are provided with water supply connector 10 and drainage connector 17, and water supply connector 10 and drainage connector 17 all bolt with the tip of valve body 15 and fix, and water supply connector 10 and drainage connector 17 all do the sealing treatment with valve body 15, intake valve seat 13 and drainage disk seat 19's inside has inlayed respectively and has inhaled valve 11 and discharge valve 16, and inhaled valve 11 and discharge valve 16 correspond respectively and enter disk seat 13 and drainage disk seat 19 laminating. In the prior art, a diaphragm type micropump has a complex flow channel, poor pollution discharge performance and easy blockage, and a micro centrifugal pump has the defect of low lift, aiming at the problems, the product designs a novel piston fluid pump, the motor body 1 drives a connecting rod structure 4 to rotate, and the connecting rod structure 4 drives a piston body 7 to reciprocate in a cylinder body 8 through transmission of the connecting rod structure 4, so that a volume difference is generated in the cylinder body 8 due to reciprocating motion, the pressure in the cylinder body 8 is adjusted, the effect of water suction and re-drainage of a valve body 15 is achieved, a suction valve 11 and a discharge valve 16 are all one-way valves, the whole body is umbrella-shaped, the water discharge capacity is large, the flow can reach 30L/h, the lift is high and can reach more than 10 m, and the defect of low lift of the micro centrifugal pump is overcome; meanwhile, the valve body 15 in the product is short, the flow channel is correspondingly short, the drain hole is large, the pollution discharge performance is strong, and the problems of complicated flow channel, poor pollution discharge performance and easy blockage of the diaphragm type micropump are solved.

Specifically, the suction valve 11 and the discharge valve 16 are both check valves, and the suction valve 11 and the discharge valve 16 are both formed in an umbrella shape as a whole. The design of umbrella-shaped check valve can guarantee that the water body can not flow back when the piston reciprocates, so the water body in the valve body 15 can be continuously pressurized, the flow is guaranteed, and the lift is ensured to be high enough.

Specifically, lubricating grease storage chamber 7b has been seted up to piston body 7 surface circumference, and is used for storing lubricating grease in the lubricating grease storage chamber 7b for lubricate the piston. Lubricating grease can be directly stored in the lubricating grease storage cavity 7b for lubrication, so that friction loss is reduced, the piston wear efficiency is reduced, and the service life of the piston is prolonged.

Specifically, the grease cotton can be directly embedded in the grease storage cavity 7b, and the grease cotton is used for supplying grease to provide lubrication. Similarly, grease cotton can be embedded in the position of the grease storage cavity 7b, grease is supplied by the grease cotton, the grease loss is small, and the cycle of secondary addition is long.

Specifically, a piston sealing ring 6 is embedded in the surface of a piston body 7, and the piston body 7 is sealed with a cylinder body 8 through the piston sealing ring 6; the piston sealing ring 6 can be single-ring for single sealing or double-ring for double sealing. The piston sealing ring 6 is sealed, so that the sealing performance is good, and the piston sealing ring is convenient to replace after being worn; meanwhile, the sealing performance of the piston can be improved by a double-sealing mode.

Specifically, the end face of the piston body 7 is provided with a slot 7a, the connecting rod structure 4 penetrates through the slot 7a, the piston pin 5 is embedded in one end, embedded in the slot 7a, of the connecting rod structure 4, and the shape of the piston pin 5 is the same as that of the slot 7 a. Through the combination of the piston pin 5 and the piston body 7, the piston body 7 is convenient to rapidly mount and dismount, and the piston pin 5 can be inserted through the slot 7a matched with the piston pin 5 to mount and fix the connecting rod structure 4 and the piston body 7; when wear occurs, the piston body 7 can be removed from the surface of the connecting rod arrangement 4 by simply rotating the connecting rod arrangement 4 within the piston body 7 so that the piston pin 5 and the slot 7a are aligned.

Specifically, the space between the water inlet valve seat 13 and the valve body 15 and the space between the water discharge valve seat 19 and the valve body 15 are sealed by the valve seat sealing rings 14; the water inlet valve seat 13 and the valve body 15 and the water discharge valve seat 19 and the valve body 15 can be fixed by ultrasonic welding. The sealing mode of the sealing ring has better detachability, and the ultrasonic welding mode has better sealing effect.

Specifically, a water inlet sealing ring 12 is embedded between the water inlet valve seat 13 and the water inlet connector 10 for sealing treatment, and a water drainage sealing ring 18 is embedded between the water drainage valve seat 19 and the water drainage connector 17 for sealing treatment. The sealing ring is sealed, so that the waterproof type of the valve seat and the joint is ensured, and water leakage is prevented.

Specifically, the connecting rod structure 4 includes a driving connecting rod 41 embedded on the surface of the output shaft of the motor body 1, the tail end of the driving connecting rod 41 is movably connected with a driven connecting rod 42, a screw bearing 43 is embedded at the joint of the driving connecting rod 41 and the driven connecting rod 42, the driven connecting rod 42 is movably connected with the driving connecting rod 41 through the screw bearing 43, and a piston pin 5 is embedded at the tail end of the driven connecting rod 42. The two-stage transmission connecting rod structure 4 rotates through the screw bearing 43, and the smooth reciprocating motion of the piston body 7 is ensured.

Specific example 2:

referring to fig. 7 to 8, in another embodiment of the present invention, the motor body 1 may further adopt a reduction motor 20, and may adopt a direct current power supply or an alternating current power supply. And the universality is stronger due to the selection of multiple power supply modes.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a piston fluid pump, includes motor body (1), motor body (1) bolt fastening is in motor support (2) top surface, motor support (2) bolt fastening is in piston pump base (3) top surface, its characterized in that: the output shaft of the motor body (1) is movably connected with a connecting rod structure (4), the connecting rod structure (4) is located inside the motor support (2), one end, far away from the output shaft of the motor body (1), of the connecting rod structure (4) is detachably connected with a piston body (7), the piston body (7) is embedded in a cylinder body (8) and is attached to the cylinder body (8), the piston body (7) and the inner wall of the cylinder body (8) are subjected to sealing treatment, one end, far away from the motor body (1), of the cylinder body (8) is provided with a valve body (15), the valve body (15) is in flange connection with the cylinder body (8), the joint of the cylinder body (8) and the valve body (15) is subjected to sealing treatment through a cylinder sealing ring (9), and the insides at two ends of the valve body (15) are respectively provided with a water inlet valve seat (13) and a water drainage valve seat (19), and intake valve seat (13) and water drainage valve seat (19) correspond respectively and set up the end of intaking and go out the water end at valve body (15), and intake valve seat (13) and water drainage valve seat (19) all do sealing treatment with valve body (15) inner wall, the end of intaking and the play water end of valve body (15) correspond respectively and are provided with water supply connector (10) and water drainage connector (17), and water supply connector (10) and water drainage connector (17) all with the tip bolt of valve body (15) fixed, and water supply connector (10) and water drainage connector (17) all do sealing treatment with valve body (15), intake valve seat (11) and discharge valve (16) have been inlayed respectively to the inside of intake valve seat (13) and water drainage valve seat (19), and intake valve (11) and discharge valve (16) correspond respectively and intake valve seat (13) and water drainage valve seat (19) laminating.

2. A piston fluid pump according to claim 1, wherein: connecting rod structure (4) are including inlaying initiative connecting rod (41) of locating motor body (1) output shaft surface, the terminal swing joint of initiative connecting rod (41) has driven connecting rod (42), the junction of initiative connecting rod (41) and driven connecting rod (42) inlays and is equipped with screw bearing (43), and driven connecting rod (42) pass through screw bearing (43) and initiative connecting rod (41) swing joint.

3. A piston fluid pump according to claim 1, wherein: the suction valve (11) and the discharge valve (16) are both one-way valves, and the suction valve (11) and the discharge valve (16) are both umbrella-shaped as a whole.

4. A piston fluid pump according to claim 1, wherein: a lubricating grease storage cavity (7b) is formed in the circumferential direction of the surface of the piston body (7) and lubricating grease is stored in the lubricating grease storage cavity;

grease cotton can be directly embedded in the lubricating grease storage cavity (7 b).

5. A piston fluid pump according to claim 1, wherein: piston body (7) surface inlays and is equipped with piston seal circle (6), and piston seal circle (6) can be single circle also can be many circles, piston body (7) are through piston seal circle (6) and cylinder body (8) sealing treatment.

6. A piston fluid pump according to claim 1, wherein: the piston is characterized in that a slot (7a) is formed in the end face of the piston body (7), the connecting rod structure (4) penetrates through the slot (7a), a piston pin (5) is embedded into one end, embedded into the slot (7a), of the connecting rod structure (4), the piston pin (5) is identical to the slot (7a) in shape, and the piston pin (5) is embedded into the tail end of the driven connecting rod (42).

7. A piston fluid pump according to claim 1, wherein: the space between the water inlet valve seat (13) and the valve body (15) and the space between the water discharge valve seat (19) and the valve body (15) are sealed by valve seat sealing rings (14); the water inlet valve seat (13) and the valve body (15) and the water discharge valve seat (19) and the valve body (15) can be fixed by ultrasonic welding.

8. A piston fluid pump according to claim 1, wherein: the water inlet sealing ring (12) is embedded between the water inlet valve seat (13) and the water inlet connector (10) for sealing treatment, and the water drainage sealing ring (18) is embedded between the water drainage valve seat (19) and the water drainage connector (17) for sealing treatment.

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