CN209875531U

CN209875531U - Anti-freezing water pump

Info

Publication number: CN209875531U
Application number: CN201920764576.3U
Authority: CN
Inventors: 刘敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2019-12-31
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a water pump prevents frostbite, including the water pump body, the casing of water pump body even has the plunger cylinder, the tip of plunger cylinder is sealed, the plunger cylinder internalization is equipped with the piston. The utility model discloses a when water pump body takes place to freeze, because the casing of water pump body even has the plunger case, can promote the piston when the water in the casing freezes the inflation, increased casing and plunger case connected portion's volume, make the water freeze the expanded volume and obtained the release, damage the water pump when can preventing that the water pump from freezing. After the water pump body is unfrozen, because the air pressure in the closed space formed by the piston and the plunger cylinder is greater than the atmospheric pressure, the piston can move back, and the normal use of the water pump body cannot be influenced. The utility model discloses a water pump body prevents frostbite and need not additionally to provide the energy, simple structure, and the cost is lower, easy maintenance. The utility model discloses be applied to water pump technical field.

Description

Anti-freezing water pump

Technical Field

The utility model belongs to the technical field of the water pump, concretely relates to water pump prevents frostbite.

Background

The existing water pump is easy to freeze in a cold environment, and the water pump is damaged due to freezing and expansion of water in the freezing process of the water pump.

Patent document with publication number CN203906312U discloses an intelligence water pump that prevents frostbite, belongs to water pump technical field. The anti-freezing pump solves the problem that water in a pump cavity needs to be drained or an elastic expansion piece is arranged to prevent a pump body from being frozen and cracked in the prior art. The intelligent anti-freezing water pump comprises a motor and a pump body with a pump cavity, wherein the pump body is also provided with a water inlet interface and a water outlet interface which are communicated with the pump cavity; the temperature sensor, the inductive switch and the motor are all electrically connected with the control circuit. The intelligent anti-freezing water pump is characterized in that a control strategy program is arranged in a control circuit, the control strategy program controls the motor to run or stop according to signals fed back by the inductive switch, the temperature sensor and the pressure sensor, the motor runs to drive the impeller to rotate, accumulated water in the pump cavity is forcibly stirred, the temperature of the accumulated water is forced to rise, and accordingly the accumulated water in the pump body is prevented from freezing.

Although the technical scheme disclosed by the patent document can improve the frost resistance of the water pump, the structure is too complex, the cost is higher, and the maintenance is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a water pump prevents frostbite damages the water pump when can preventing that the water pump from freezing, simple structure, and the cost is lower, easy maintenance.

In order to achieve the purpose, the utility model provides a water pump prevents frostbite, including the water pump body, the casing of water pump body even has the plunger type jar, the tip of plunger type jar is sealed, the plunger type jar internalization is equipped with the piston.

In a further improvement, an elastic element is arranged between the end part of the plunger cylinder and the piston.

In a further improvement, the elastic element is a spring, one end of the spring is connected to the end of the plunger cylinder, and the other end of the spring is connected to the piston.

In a further improvement, a blind hole is formed in one end, close to the end of the plunger cylinder, of the piston, and the other end of the spring is connected to the bottom end of the blind hole.

In a further improvement, a concave part is arranged on one side of the piston far away from the end part of the plunger cylinder.

In a further improvement, the concave part is in a spherical arc shape.

Further improved, the sunken part is provided with an overhaul screw.

In a further improvement, the circumferential surface of the piston is sleeved with a first sealing ring.

In a further improvement, a second sealing ring is arranged between the plunger cylinder and the shell.

In a further improvement, the peripheral surface of the plunger cylinder and the peripheral surface of the shell are coated with heat insulation materials.

In a further improvement, a limiting part is arranged at the joint of the shell and the plunger cylinder, and the limiting part is arranged on the shell.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect:

the utility model discloses a when water pump body takes place to freeze, because the casing of water pump body even has the plunger case, can promote the piston when the water in the casing freezes the inflation, increased casing and plunger case connected portion's volume, make the water freeze the expanded volume and obtained the release, damage the water pump when can preventing that the water pump from freezing. After the water pump body is unfrozen, because the air pressure in the closed space formed by the piston and the plunger cylinder is greater than the atmospheric pressure, the piston can move back, and the normal use of the water pump body cannot be influenced. The utility model discloses a water pump body prevents frostbite and need not additionally to provide the energy, simple structure, and the cost is lower, easy maintenance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators in the embodiments of the present invention, such as upper, lower, left, right, front and rear … …, are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Referring to fig. 1, the anti-freezing water pump comprises a water pump body 1, wherein a plunger cylinder 2 is connected to a shell 11 of the water pump body 1, the end part of the plunger cylinder 2 is closed, and a piston 3 is movably arranged in the plunger cylinder 2. Water pump body 1 has included casing 11 and impeller 12, and impeller 12 even has the motor, and water pump body 1's concrete structure has many types among the prior art, and this is no longer repeated. Closed space 201 has been formed between piston 3 and the plunger jar 2 tip, because closed space 201 intussuseption is filled with gas, like the air, because gas is compressible, consequently, just can push piston 3 and move toward plunger jar 2 tip when the water inflation in the casing 11 of water pump body 1, piston 3 can compress closed space 201 after moving toward plunger jar 2 tip to can increase casing 11 and plunger jar 2 connected portion's volume.

Preferably, the side of the piston 3 remote from the end of the plunger cylinder 2 is provided with a recess 32. The recess 32 is in the shape of a spherical arc, and it is further preferable that the recess 32 is provided with a service screw 33. The arrangement of the concave part 32 can ensure that when water freezes and expands to push the piston 3, the stress point of the piston 3 is in the middle of the piston 3, which is convenient for pushing the piston 3. Particularly, when the recess 32 has a spherical arc shape, it is easier to concentrate the force point of the piston 3 at the middle of the piston 3. After the piston 3 is used for a long time, because the piston 3 is arranged in the plunger cylinder 2, the piston 3 is inconvenient to take out due to abrasion and the like, and when parts such as the piston 3 are damaged and need to be replaced, the piston 3 can be easily taken out through the overhaul screw 33.

An elastic element 4 is arranged between the end of the plunger cylinder 2 and the piston 3. The elastic element 4 can ensure the movement and the reset of the piston 3 towards the end part of the plunger cylinder 2 if the airtight of the closed space 201 formed by the piston 3 and the plunger cylinder 2 is not good. Specifically, the elastic element 4 is a spring, one end of the spring is connected to the end of the plunger cylinder 2, and the other end of the spring is connected to the piston 3. Preferably, one end of the piston 3 close to the end of the plunger cylinder 2 is provided with a blind hole 31, and the other end of the spring is connected to the bottom end of the blind hole 31. The blind hole 31 can be with the fixed piston 3 of spring, if do not have blind hole 31, the life is longer back, and spring and piston 3 and junction fracture take place, and the position of spring will take place to remove, and the spring removes the back, and the atress of spring and the removal orbit of piston 3 can produce great angle, can influence the life of spring.

The circumferential surface of the piston 3 is sleeved with a first sealing ring 34, preferably, the circumferential surface of the end part of the piston 3 is respectively provided with one first sealing ring 34, the airtightness of the closed space 201 formed by the piston 3 and the plunger cylinder 2 can be ensured through the arrangement of the sealing rings 34, and if the airtightness is poor, the resetting effect is not good when the piston 3 is pushed to the end part of the plunger cylinder 2.

And a second sealing ring 5 is arranged between the plunger cylinder 2 and the shell 11, and the second sealing ring can improve the sealing property between the plunger cylinder 2 and the shell 11 and prevent water leakage.

The peripheral face of plunger jar 2 all coats with insulation material 6 with 11 global coats of casing, and insulation material 6 is foam cotton or foam etc. and insulation material 6 passes through screw and glue etc. and fixes on 11 and plunger jar 2 of casing.

Casing 11 and plunger jar 2 junction are equipped with spacing portion 7, spacing portion 7 is established on casing 11, it is specific, casing 11 and plunger jar 2 junction are the opening, this opening is in order to guarantee inside and plunger jar 2 intercommunication of casing 11, spacing portion 7 is the dog on the piston 3 moving path, prevent that piston 3 roll-off plunger jar 2 from getting into in the casing 11, spacing portion 7 also can be with the structure of open-ended internal diameter setting to be less than piston 3's diameter, also can block piston 3 like this, prevent piston 3 roll-off plunger jar 2. Thus, the stopper 7 may have various structures capable of stopping the piston 3 from sliding out of the plunger cylinder 2, and is not exhaustive.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The anti-freezing water pump is characterized by comprising a water pump body (1), wherein a plunger cylinder (2) is connected to a shell (11) of the water pump body (1), the end part of the plunger cylinder (2) is sealed, and a piston (3) is movably arranged in the plunger cylinder (2).

2. Anti-freeze water pump according to claim 1, characterised in that an elastic element (4) is provided between the end of the plunger cylinder (2) and the piston (3).

3. Anti-freeze water pump according to claim 2, characterized in that the elastic element (4) is a spring, one end of which is connected to the end of the plunger cylinder (2) and the other end of which is connected to the piston (3).

4. The anti-freezing water pump according to claim 3, characterized in that one end of the piston (3) close to the end of the plunger cylinder (2) is provided with a blind hole (31), and the other end of the spring is connected to the bottom end of the blind hole (31).

5. The antifreeze water pump according to claim 1, characterized in that a concave part (32) is arranged on one side of the piston (3) far away from the end part of the plunger cylinder (2), and the concave part (32) is in a spherical arc shape.

6. Antifreeze water pump according to claim 5, characterized in that the recess (32) is provided with service screws (33).

7. The antifreeze water pump according to claim 1, wherein the piston (3) is sleeved with a first sealing ring (34) on the circumferential surface.

8. Anti-freeze water pump according to claim 1, characterised in that a second sealing ring (5) is provided between the plunger cylinder (2) and the housing (11).

9. The antifreeze water pump according to claim 1, wherein the peripheral surface of the plunger cylinder (2) and the peripheral surface of the housing (11) are coated with a thermal insulation material (6).

10. The anti-freezing water pump according to claim 1, characterized in that a limiting part (7) is arranged at the joint of the housing (11) and the plunger cylinder (2), and the limiting part (7) is arranged on the housing (11).