CN219953642U

CN219953642U - Small gear pump

Info

Publication number: CN219953642U
Application number: CN202321198487.XU
Authority: CN
Inventors: 李勤
Original assignee: Sichuan Changzhuang Technology Co ltd
Current assignee: Sichuan Changzhuang Technology Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-11-03
Anticipated expiration: 2033-05-18

Abstract

The utility model relates to the technical field of gear pumps, and discloses a small gear pump which comprises a base, wherein a shell is fixedly arranged on the outer surface of the top of the base, the outer surface of the left side of the shell is fixedly communicated with a water inlet pipe, the outer surface of the right side of the shell is fixedly communicated with a water outlet pipe, the outer surface of the water outlet pipe is fixedly communicated with a connecting pipe, the outer surface of the connecting plate is fixedly connected with a spring, and the other end of the spring is fixedly connected with a blocking block. This small-size gear pump, through spring cooperation putty, reached can seal the outlet pipe when the gear pump stop work, avoid the liquid backward flow, improved the effect of the practicality of gear pump, solved current small-size gear pump when using, can't satisfy the liquid to the output and prevent the backward flow, when leading to small-size gear pump stop work, backward flow liquid is too much, and then influences the problem of the practicality of small-size gear pump.

Description

Small gear pump

Technical Field

The utility model relates to the technical field of gear pumps, in particular to a small gear pump.

Background

The gear pump is a common pump, which is a rotary pump for conveying liquid or pressurizing the liquid by means of the working volume change and movement formed between a pump cylinder and a meshing gear, and the small gear pump has the advantages of simple structure, reliable work, strong pollution resistance, good self-priming performance and the like, and is a hydraulic element widely applied to engineering machinery.

When the existing small gear pump is used, backflow cannot be prevented from being conducted on output liquid, so that when the small gear pump stops working, the backflow liquid is excessive, and the practicability of the small gear pump is affected, and therefore the small gear pump is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a small gear pump, which solves the problems that when the prior small gear pump mentioned in the background art is used, the backflow of the output liquid cannot be prevented, so that the backflow liquid is excessive when the small gear pump stops working, and the practicability of the small gear pump is affected.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a small-size gear pump, includes the base, the top surface fixed mounting of base has the casing, the left side surface fixed intercommunication inlet tube of casing, the right side surface fixed intercommunication of casing has the outlet pipe, the surface fixed intercommunication of outlet pipe has the connecting pipe, the equal fixedly connected with connecting plate of top internal surface and bottom internal surface of connecting pipe, the surface fixed connection of connecting plate has the spring, the other end fixedly connected with sprue of spring.

Preferably, the internal surface of casing rotates and is connected with first pivot and second pivot, the top external surface fixedly connected with mounting bracket of base, the top external surface fixed mounting of mounting bracket has the motor, the output and the first pivot fixed connection of motor, the external surface fixed cover of first pivot is equipped with the driving gear, the external surface fixed cover of second pivot is equipped with driven gear, driving gear and driven gear mutually movable engagement.

Preferably, the top surface of the tooth of the driving gear and the top surface of the tooth of the driven gear are fixedly connected with two mounting plates, the opposite outer surfaces of the two mounting plates are rotationally connected with rollers, the inner surface of the shell is provided with a sliding groove, and the rollers are in sliding connection with the inner surface of the sliding groove.

Preferably, the outer surface of the connecting plate is fixedly connected with a supporting rod, the blocking block is movably inserted into the outer surface of the supporting rod, and the spring is sleeved on the outer surface of the supporting rod.

By adopting the technical scheme, through setting up the bracing piece, avoid the spring slope for the spring can stably take place deformation.

Preferably, the inside of the chute and the outer surface of the mounting plate are both provided with sealing gaskets, and the surfaces of the sealing gaskets are concave.

By adopting the technical scheme, the sealing performance between the roller and the chute and the mounting plate is improved through the concave sealing gasket.

Preferably, the blocking piece is conical, the leftmost diameter of the blocking piece is smaller than the rightmost diameter, and a sealing ring is arranged on the outer surface of the blocking piece.

By adopting the technical scheme, the water outlet pipe is conveniently plugged by the plugging block.

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

1. this small-size gear pump, through spring cooperation putty, reached can seal the outlet pipe when the gear pump stop work, avoid the liquid backward flow, improved the effect of the practicality of gear pump, solved current small-size gear pump when using, can't satisfy the liquid to the output and prevent the backward flow, when leading to small-size gear pump stop work, backward flow liquid is too much, and then influences the problem of the practicality of small-size gear pump.

2. This small-size gear pump through setting up gyro wheel and sealed pad, has reached the friction that can reduce between gear and the casing, avoids when the gear rotates because of the too big long-time effect that forms the gap with the casing of frictional force between.

Drawings

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

FIG. 2 is a schematic elevational cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

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

In the figure: 1. a base; 2. a housing; 3. a first rotating shaft; 4. a mounting frame; 5. a motor; 6. a second rotating shaft; 7. a drive gear; 8. a driven gear; 9. a water inlet pipe; 10. a water outlet pipe; 11. a connecting pipe; 12. a connecting plate; 13. a spring; 14. blocking; 15. a mounting plate; 16. a roller; 17. a chute; 18. and (5) supporting the rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Example 1:

referring to fig. 1-3, a small gear pump comprises a base 1, a shell 2 is fixedly arranged on the outer surface of the top of the base 1, a first rotating shaft 3 and a second rotating shaft 6 are rotatably connected to the inner surface of the shell 2, a mounting frame 4 is fixedly connected to the outer surface of the top of the base 1, a motor 5 is fixedly arranged on the outer surface of the top of the mounting frame 4, the output end of the motor 5 is fixedly connected with the first rotating shaft 3, a driving gear 7 is sleeved on the outer surface of the first rotating shaft 3, the motor 5 drives the first rotating shaft 3 to drive the driving gear 7 to rotate anticlockwise, a driven gear 8 is sleeved on the outer surface of the second rotating shaft 6, the driving gear 7 is meshed with the driven gear 8 in an inter-movable manner, the driving gear 7 drives the driven gear 8 to rotate clockwise, the left outer surface of the shell 2 is fixedly communicated with a water inlet pipe 9, the right outer surface of the shell 2 is fixedly communicated with a water outlet pipe 10, the outer surface of the water outlet pipe 10 is fixedly communicated with a connecting pipe 11, the water inlet pipe 9 and the connecting pipe 11 are connected with an external liquid supply pipeline and a conveying pipeline, along with the rotation of a driving gear 7 and a driven gear 8, the transmission liquid is output from the water outlet pipe 10, the inner surface of the top and the inner surface of the bottom of the connecting pipe 11 are fixedly connected with a connecting plate 12, the outer surface of the connecting plate 12 is fixedly connected with a spring 13, the other end of the spring 13 is fixedly connected with a blocking block 14, along with the output of the liquid, the pressure of the liquid is increased, the spring 13 is compressed by the pressure of the liquid, the blocking block 14 is separated from the water outlet pipe 10, the water outlet pipe 10 is communicated with the connecting pipe 11, the liquid enters the conveying pipeline from the connecting pipe 11, when the gear pump stops working, the liquid is stopped to be pressurized, under the restoring force of the spring 13, the blocking block 14 blocks the water outlet pipe 10, thereby preventing the liquid from flowing back.

Working principle: when the utility model is used, the water inlet pipe 9 and the connecting pipe 11 are respectively connected with an external liquid supply pipeline and a conveying pipeline, the motor 5 drives the first rotating shaft 3 to drive the first rotating shaft 3 to anticlockwise rotate, so that the driven gear 8 is driven to clockwise rotate, conveyed liquid enters from the water inlet pipe 9, the water inlet end of the water inlet pipe 9 is positioned between the driving gear 7 and the driven gear 8 and fills the space, the conveyed liquid is output from the water outlet pipe 10 along with the rotation of the driving gear 7 and the driven gear 8, the pressure of the liquid is increased along with the output of the liquid, the spring 13 is compressed, the blocking block 14 is separated from the water outlet pipe 10, the water outlet pipe 10 is further communicated with the connecting pipe 11, the liquid enters into the conveying pipeline from the connecting pipe 11, when the gear pump stops working, the liquid is stopped from being pressurized, the blocking block 14 blocks the water outlet pipe 10 under the restoring force of the spring 13, and the liquid is prevented from flowing back.

Compared with the related art, the small gear pump provided by the utility model has the following beneficial effects: the utility model discloses reached can seal outlet pipe 10 when the gear pump stop work, avoid the liquid backward flow, improved the effect of the practicality of gear pump, solved current small-size gear pump when using, can't satisfy the liquid to the output and prevent the backward flow, when leading to small-size gear pump stop work, backward flow liquid is too much, and then influences the problem of the practicality of small-size gear pump.

Example 2:

referring to fig. 1-4 in combination, the top outer surfaces of the teeth of the driving gear 7 and the teeth of the driven gear 8 are fixedly connected with two mounting plates 15, the opposite outer surfaces of the two mounting plates 15 are rotationally connected with rollers 16, the inner surface of the shell 2 is provided with a sliding groove 17, the rollers 16 are slidably connected with the inner surface of the sliding groove 17, in the rotation process of the driving gear 7 and the driven gear 8, the rollers 16 slide in the sliding groove 17, sealing gaskets are arranged in the sliding groove 17 and on the outer surfaces of the mounting plates 15, the surfaces of the sealing gaskets are concave, and the sealing gaskets between the rollers 16 and the teeth and between the rollers 16 and the shell 2 are increased by additionally arranging the sealing gaskets between the sliding groove 17 and the rollers 16 and the mounting plates 15, so that friction between the gears and the shell 2 is reduced.

Working principle: in the process of rotating the driving gear 7 and the driven gear 8, the roller 16 slides in the chute 17, and the sealing gasket is additionally arranged in the chute 17 and between the roller 16 and the mounting plate 15, so that the sealing performance between the roller 16 and gear teeth and the sealing performance between the roller 16 and the housing 2 are improved, and the friction between the gear and the housing 2 is reduced.

Compared with the related art, the small gear pump provided by the utility model has the following beneficial effects: the friction between the gear and the shell 2 can be reduced, and the phenomenon that gaps are formed between the gear and the shell 2 for a long time due to overlarge friction force during rotation of the gear is avoided.

The above-mentioned respective means concerning the use of the apparatus are different in selection and use according to actual practice, and various parameters are referred to, and the function according to the apparatus used corresponds to the effect achieved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A small gear pump, comprising a base (1), characterized in that: the utility model discloses a water treatment device for a water heater, including base (1), casing (2) are installed to top surface fixed mounting of base (1), left side external surface fixed intercommunication inlet tube (9) of casing (2), right side external surface fixed intercommunication of casing (2) has outlet pipe (10), the external surface fixed intercommunication of outlet pipe (10) has connecting pipe (11), the equal fixedly connected with connecting plate (12) of top internal surface and bottom internal surface of connecting pipe (11), the external surface fixedly connected with spring (13) of connecting plate (12), the other end fixedly connected with sprue (14) of spring (13).

2. A compact gear pump as set forth in claim 1, wherein: the utility model discloses a motor, including casing (2), first pivot (3) and second pivot (6) are connected with in the internal surface rotation of casing (2), top surface fixedly connected with mounting bracket (4) of base (1), top surface fixed mounting of mounting bracket (4) has motor (5), the output and the first pivot (3) fixed connection of motor (5), the fixed surface cover of first pivot (3) is equipped with driving gear (7), the fixed surface cover of second pivot (6) is equipped with driven gear (8), driving gear (7) and driven gear (8) mutually movable engagement.

3. A compact gear pump as set forth in claim 2, wherein: the top surface of tooth of driving gear (7) and the tooth of driven gear (8) is two mounting panel (15) of equal fixedly connected with, and the surface rotation that two mounting panel (15) are relative is connected with gyro wheel (16), spout (17) have been seted up to the internal surface of casing (2), the internal surface sliding connection of gyro wheel (16) and spout (17).

4. A compact gear pump as set forth in claim 1, wherein: the outer surface of connecting plate (12) fixedly connected with bracing piece (18), the activity of shutoff piece (14) is inserted and is established the surface at bracing piece (18), just spring (13) cover is established the surface at bracing piece (18).

5. A miniature gear pump according to claim 3, wherein: sealing gaskets are arranged in the sliding groove (17) and on the outer surface of the mounting plate (15), and the surfaces of the sealing gaskets are concave.

6. A compact gear pump as set forth in claim 1, wherein: the blocking piece (14) is conical, the leftmost diameter of the blocking piece (14) is smaller than the rightmost diameter, and a sealing ring is arranged on the outer surface of the blocking piece (14).