CN217440283U - Pump head and water pump - Google Patents

Abstract

The application relates to a pump head and a water pump, which relate to the technical field of pumps and comprise a valve plate and a valve seat; the valve plate and the valve seat cover to form a fluid inlet passage; the valve seat is provided with a one-way fluid inlet valve and a fluid inlet hole; and a buffer groove is arranged on one side of the fluid inlet hole, which is far away from the valve plate. This application effectively improves the effect of the gas tightness of water pump.

Description

Pump head and water pump

Technical Field

The application relates to the technical field of water pumps, in particular to a pump head and a water pump.

Background

A pump is a machine that delivers or pressurizes a fluid. The water pump can only convey material flow taking fluid as a medium, is mainly used for conveying liquid including water, oil, acid-base liquid, emulsion, suspoemulsion, liquid metal and the like, and cannot convey solid.

In the practical application of water pump, because probably contain some other impurity foreign matters in the fluid, the pump head can be blocked up like hair to impurity foreign matters especially silk bits when the water pump is carrying, leads to the fluid transportation not smooth, and then makes the gas tightness of water pump reduce, influences life.

In view of the above-mentioned related art, the inventor believes that there is a defect that foreign matters such as silk shreds block the pump head, resulting in a decrease in air tightness of the water pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pump head and water pump, the defect that the anti foreign matter ability of intending to improve current water pump is low.

In a first aspect, the pump head provided by the present application adopts the following technical scheme: a pump head comprises a valve plate and a valve seat; the valve plate and the valve seat cover to form a fluid inlet passage; a fluid inlet hole is formed in the valve seat; and a buffer groove is arranged on one side of the fluid inlet hole, which is far away from the valve plate.

Through adopting above-mentioned technical scheme, in the practical application of fluid pump, because the fluid of carrying often is not the pure material, can adulterate some impurity foreign matter for example silk bits such as hair, the existence of dashpot, reduce the fitting surface of one-way fluid admission valve and disk seat, ensure on the one hand that the silk bits foreign matter that gets into one-way fluid admission valve can escape more easily, reduce the adhesion problem with one-way fluid admission valve, on the other hand foreign matter dashpot can ensure even if when having the foreign matter between one-way fluid admission valve and disk seat, the foreign matter can persist in the dashpot, do not influence the gas tightness, can guarantee the normal transport of fluid.

Optionally, the fluid inlet hole has a smaller diameter on a side away from the buffer tank than on a side close to the buffer tank.

Preferably, the aperture of the fluid inlet hole is gradually reduced from the side far away from the buffer tank to the side close to the buffer tank.

By adopting the technical scheme, when in conveying, some larger foreign matters can block the pump head, specifically, in order to prevent large foreign matters from entering the pump head and influencing the integral air tightness of the pump head, the aperture of one end of the fluid inlet close to the valve plate is smaller than that of the other end, so that the large foreign matters (such as blocks or sheets) are prevented from entering the pump head; furthermore, the aperture of the fluid inlet hole is gradually reduced from one side far away from the buffer groove to one side close to the buffer groove, namely the cross-sectional schematic diagram of the fluid inlet hole is in a conical shape, so that the filament scrap foreign matter can be better blocked.

Optionally, the valve seat is further provided with a limiting part, and the limiting part is located on one side of the fluid inlet hole, which is far away from the buffer groove.

Through adopting above-mentioned technical scheme, spacing portion can be fine carry on spacingly to the one-way fluid admission valve, make its fixing firmly in the mounting hole, secondly because the existence of spacing portion, make things convenient for the installation of one-way fluid admission valve more.

Optionally, the limiting part is an annular table or an arc-shaped table.

By adopting the technical scheme, the annular table or the arc-shaped table can be matched with the mounting hole, the umbrella rod of the one-way fluid inlet valve is generally round, and the limiting part can be well limited by the annular table or the arc-shaped table; on the one hand, the problem that the one-way fluid inlet valve is assembled and falls off due to the fact that the redundant part is sheared to damage the umbrella column ball body in the assembling process of the one-way fluid inlet valve is avoided, and meanwhile, the one-way fluid inlet valve is prevented from being extruded and falling off under the icing condition when the one-way fluid inlet valve is used at low temperature, and the pumping difficulty is caused.

Optionally, the fluid inlet hole is provided with a plurality of fluid inlet holes, and the fluid inlet holes are uniformly distributed on the periphery of the limiting part.

Through adopting above-mentioned technical scheme, a plurality of fluid inlet holes can shunt the fluid, make it even and faster through one-way fluid admission valve.

Optionally, a fluid discharge passage is further formed between the valve plate and the valve seat cover, a one-way fluid discharge valve is arranged on the valve plate, and the one-way fluid discharge valve and the valve plate are integrally formed.

Through adopting above-mentioned technical scheme, adopt the integral type design can promote the stability of one-way fluid bleeder valve, avoid the pump head vibrations during operation, in the pump head was fallen again to discharged foreign matter through one-way fluid bleeder valve, caused the pump head airtight bad to the influence is drawn water.

Optionally, a plurality of ribs are arranged between the one-way fluid discharge valve and the valve plate.

Through adopting above-mentioned technical scheme, further guarantee the intensity of one-way fluid bleeder valve, under some special use scenes, if transport fluid handstand, because the dead weight of one-way fluid bleeder valve and the gravity of fluid can lead to one-way fluid bleeder valve to take place to warp, influence the gas tightness to lead to pumping water the difficulty.

Optionally, a water inlet hole is formed in the position, corresponding to the limiting part, of the valve plate.

Through adopting above-mentioned technical scheme, spacing portion has played the limiting displacement to one-way fluid admission valve on the one hand, and on the other hand makes in the fluid can get into the pump body through the inlet opening.

Optionally, a fixing column is further arranged on the valve seat, and a fixing groove is formed in the position, corresponding to the fixing column, of the valve plate.

By adopting the technical scheme, the fixing column and the fixing groove are inserted to achieve the connection effect between the valve block and the valve seat, so that the valve block and the valve seat form a fluid inlet passage and a fluid outlet passage which are mutually independent.

In a second aspect, the present application provides a water pump, which adopts the following technical scheme: the utility model provides a water pump, includes the pump body and above the pump head, the pump body includes that base, drive assembly close piston assembly, the base is used for installing drive assembly and closes piston assembly, the pump head is connected with piston assembly, drive assembly drive piston assembly moves.

Through adopting above-mentioned technical scheme, the base provides the mounted position for drive assembly and piston assembly, and drive assembly improves power for piston assembly in addition, thereby makes piston assembly motion produce the pressure difference and carry water through the pump head.

Optionally, the base is provided with a fixing portion, and the fixing portion is provided with one or more fixing holes.

Through adopting above-mentioned technical scheme, the water pump is when carrying out the transport of liquid such as water, and water pump itself can take place vibrations, often need fix with the steadiness, so fixed part and external fixation on through the base reach the effect that promotes stability.

Optionally, a photoelectric switch is further arranged on the base, the driving assembly comprises a motor and an eccentric wheel, the motor drives the eccentric wheel to rotate, and the photoelectric switch is used for sensing and recording the number of rotation turns of the eccentric wheel.

Through adopting above-mentioned technical scheme, photoelectric switch is used for the rotation that the induction motor drove the eccentric wheel to record eccentric wheel and motor pivoted number of turns, and then reflect the operating condition of motor and eccentric wheel.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pump head can effectively prevent larger foreign matters from entering the pump head, and the air tightness of the water pump is effectively improved;

2. even if small foreign matters enter the pump head, the buffer groove can effectively provide space for buffering, the one-way fluid inlet valve cannot be directly influenced, and the foreign matters can be flushed out and cannot be adhered to the one-way fluid inlet valve;

3. the integral type design of one-way fluid bleeder valve and valve block has effectively improved the stability of one-way fluid bleeder valve, and the connection design of many ribs has strengthened the gas tightness of water pump in special application scene (if when handstand use), guarantees that its function of drawing water is normal in addition.

Drawings

Fig. 1 is an exploded view of a water pump disclosed in embodiment 1 of the present application;

fig. 2 is an exploded schematic view of a part of the structure of a water pump disclosed in embodiment 1 of the present application;

fig. 3 is a schematic cross-sectional view of a valve plate and a valve seat of a water pump disclosed in embodiment 1 of the present application;

fig. 4 is a bottom view of a valve seat of a water pump disclosed in embodiment 1 of the present application;

fig. 5 is a plan view of a water pump disclosed in embodiment 1 of the present application;

fig. 6 is a schematic view of a base of a water pump disclosed in embodiment 1 of the present application;

fig. 7 is a plan view of a water pump disclosed in embodiment 2 of the present application.

Description of reference numerals: 1. a pump head; 11. a pump cover 111, a water inlet pipe; 112. a drain pipe; 12. a valve plate; 120. a one-way fluid discharge valve; 121. ribs; 122. a water inlet hole; 13. a valve seat; 131. a fluid inlet hole; 132. mounting holes; 133. a limiting part; 134. fixing a column; 135. a water outlet hole; 14. a one-way fluid inlet valve; 141. an umbrella rod; 142. an umbrella cap; 143. a blocking portion; 100. a buffer tank; 2. a pump body; 21. a piston assembly; 211. an air bag; 212. a capsule seat; 22. a drive assembly; 221. a motor; 222. an eccentric wheel; 223. a steel needle; 224. a connecting rod; 23. a base; 231. a fixed part; 2310. a fixing hole; 232. a photoelectric switch; 3. and (5) buckling.

Detailed Description

The present application is described in further detail below with reference to fig. 1-7.

Example 1: the utility model provides a water pump, includes pump head 1 and the pump body 2, and pump head 1 and the pump body 2 are fixed through buckle 3 and screw, and the pump body 2 includes piston assembly 21, drive assembly 22 and base 23. The piston assembly 21 and the driving assembly 22 are respectively fixedly connected to the base 23, the piston assembly 21 includes an air bag 211 and a bag seat 212, the driving assembly 22 includes a motor 221, an eccentric wheel 222, a steel needle 223 and a connecting rod 224, and the connection relationship between the above components is known to those skilled in the art and will not be described herein. The motor 221 provides power to drive the air bag 211 to generate air pressure change through the eccentric wheel 222, the steel needle 223 and the connecting rod 224, so as to form a pressure difference, so that the water fluid can enter and exit the water pump, and the purpose of conveying the water and other fluids is achieved.

The pump head 1 includes a pump cover 11, a valve sheet 12, and a valve seat 13, the valve sheet 12 is disposed between the pump cover 11 and the valve seat 13, and the three cover to form a fluid inlet passage and a fluid outlet passage that are independent of each other.

Specifically, the pump cover 11 is provided with a water inlet pipe 111 and a water outlet pipe. The outer ring of the valve seat 13 is uniformly provided with three groups of five fluid inlet holes 131. The valve seat 13 is further provided with three one-way fluid inlet valves 14, and in order to facilitate the installation of the one-way fluid inlet valves 14, three mounting holes 132 are formed in the valve seat 13. The inner ring of the valve seat 13 is provided with three outlet holes 135, and a one-way fluid discharge valve 120 is disposed at a position of the valve plate 12 corresponding to the outlet holes 135.

The inlet pipe 111, the inlet opening 122, the fluid inlet hole 131, the one-way fluid inlet valve 14 form a fluid inlet passage, and the outlet opening 135, the one-way fluid outlet valve 120, the drain pipe 112 form a fluid outlet passage.

The embodiment of the present application is improved in that the aperture of the fluid inlet hole 131 on the side close to the valve sheet 12 is made small. Specifically, the aperture of the fluid inlet hole 131 on the side close to the valve sheet 12 is smaller than the aperture on the side away from the valve sheet 12. Preferably, in the embodiment of the present application, the cross-sectional view of the fluid inlet hole 131 is a trapezoid, that is, the aperture of the fluid inlet hole 131 gradually decreases from the side away from the valve plate 12 to the side close to the valve plate 12. The purpose of design like this, at the in-process of carrying water, reduce great impurity foreign matter and pass through in the fluid admission passageway gets into the pump body 2, lead to the water pump gas tightness not good, influence the condition emergence of drawing water.

Further, the one-way fluid inlet valve 14 is an umbrella valve, and includes an umbrella shaft 141 and an umbrella cap 142, the umbrella shaft 141 is connected to the valve seat 13 through the mounting hole 132, and a buffer groove 100 is formed between the umbrella cap 142 and the valve seat 13. The existence of dashpot 100 has reduced the contact surface between umbrella valve and the valve seat 13 on the one hand, can reduce like this that the foreign matter is blocked in the contact clearance of umbrella valve and valve seat 13, and secondly the existence of dashpot 100 provides sufficient space for the impurity foreign matter, reduces the adhesion between its and umbrella valve and the valve seat 13, and the spacious dashpot 100 does benefit to in addition and dashes out the impurity foreign matter in the time of the drainage.

To facilitate the installation of the one-way fluid inlet valve 14, a limiting portion 133 is disposed on a side of the valve seat 13 close to the valve plate 12, in this embodiment, the limiting portion 133 is an arc-shaped platform, and the limiting portion 133 is disposed beside the installation hole 132. The umbrella rod 141 is further provided with the blocking portion 143, the blocking portion is spherical, and the blocking portion 143 can be well limited due to the arc shape of the limiting portion 133, so that the umbrella rod 141 cannot be easily separated from the limiting of the limiting portion 133 even at low temperature.

Further, the fluid inlet holes 131 are uniformly distributed around the limiting portion 133. This arrangement is advantageous in that the water flow passes through rapidly and uniformly. The position of the valve plate 12 corresponding to the fluid inlet hole 131 is a water inlet hole 122, and the water inlet hole 122 can be penetrated by the limiting part 133 to play a certain positioning role.

Further, in order to improve the connection strength between the valve plate 12 and the valve seat 13, two fixing posts 134 are disposed on the valve seat 13 on the same side as the limiting portion 133, and correspondingly, two fixing slots (not shown) are disposed on the valve plate 12. The fixing column 134 is in insertion fit with the fixing groove to realize the connection between the valve plate 12 and the valve seat 13.

Further, at the position of the valve plate 12 corresponding to the water outlet hole 135 on the valve seat 13, there are three one-way fluid discharge valves 120. The valve sheet 12 is integrally formed with the one-way fluid discharge valve 120, and thus is designed to improve the stability of the one-way fluid discharge valve 120. Secondly, a plurality of ribs 121 are arranged between the one-way fluid discharge valve 120 and the valve plate 12 for connection, so that the stability is further improved. The purpose of this setting is in order to make the water pumping function of water pump under the special use scene not influenced. In reality, if the water pump is used upside down to transport a fluid such as water, the one-way fluid discharge valve 120 may be deformed by the gravity of the water and the self-weight of the one-way fluid discharge valve 120, which may affect airtightness, and make it difficult to pump water. The design like this of this application, gas tightness when can effectual improvement water pump handstand draw water.

Further, a fixing portion 231 is disposed on the base 23, the fixing portion 231 is a fixing plate and is fixedly connected to the base 23, and two fixing holes 2310 are disposed on the fixing portion 231 for fixing the water pump. In practical applications, the water pump may vibrate due to the operation of the motor 221, so that the water pump needs to be fixed to prevent the vibration from causing the water pump to turn over and be damaged.

Further, the base 23 is also provided with a photoelectric switch 232, the photoelectric switch can induce the motor to drive the eccentric wheel to rotate, the eccentric wheel is provided with three blades, and the photoelectric switch detects the rotation of the blades on the eccentric wheel and records the number of rotation turns, so that the working states of the motor and the eccentric wheel are reflected. The reason why the photoelectric switch 232 is disposed on the base 23 is that the base 23 is provided with the fixing portion 231, which is fixed to the outside, and has the highest stability, so that the occurrence of instability of the photoelectric switch 232 due to vibration of the motor 221 can be reduced, damage can be reduced, and the photoelectric switch 232 can be accurately operated.

The implementation principle of the embodiment of the application is as follows: the aperture of the inlet of the fluid inlet hole 131 is made small, namely the aperture of the side close to the valve plate 12 is smaller than the aperture of the side far away from the valve plate 12, so that large foreign impurities can be effectively prevented from entering the water pump; secondly set up dashpot 100 between one-way fluid admission valve 14 and disk seat 13, play the effect of effective buffering for the impurity foreign matter has the space to deposit, has reduced the influence to one-way fluid admission valve 14, also can let the effectual discharge of impurity foreign matter in addition, thereby guarantees normally to draw water the function.

Example 2: referring to fig. 7, the embodiment of the present application is different from embodiment 1 in that the shape of the stopper portion 133 is different, and an annular table is used as the stopper portion 133 of the present application. The annular table is more adaptive to the mounting hole 132, and can well limit and fix the one-way fluid inlet valve 14. Secondly, a plurality of water inlet holes 122 are formed on the valve plate 12 corresponding to the shapes of the fluid inlet hole 131, the mounting hole 132 and the limiting part 133 on the valve seat 13.

The implementation principle of the embodiment of the application is as follows: the description is omitted here as in embodiment 1.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A pump head, comprising a valve plate (12) and a valve seat (13); a fluid inlet passage is formed between the valve plate (12) and the valve seat (13); a fluid inlet hole (131) is formed in the valve seat (13), and a buffer groove (100) is formed in one side, far away from the valve plate (12), of the fluid inlet hole (131).

2. A pumphead as claimed in claim 1, wherein the fluid inlet port (131) has a smaller aperture on the side remote from the buffer reservoir (100) than on the side close to the buffer reservoir (100).

3. A pumphead as claimed in claim 1, wherein the valve seat (13) is further provided with a stop (133), the stop (133) being located on a side of the fluid inlet bore (131) remote from the buffer reservoir (100).

4. A pumphead as claimed in claim 3, wherein the stop (133) is an annular or arcuate land.

5. A pumphead as claimed in claim 3, wherein the fluid inlet (131) is provided in a plurality and is evenly distributed around the periphery of the stop (133).

6. A pump head as claimed in claim 1, wherein the valve plate (12) is provided with a one-way fluid discharge valve (120), and the one-way fluid discharge valve (120) is formed integrally with the valve plate (12).

7. A pump head as claimed in claim 6, wherein a plurality of ribs (121) are provided between the one-way fluid discharge valve (120) and the valve plate (12).

8. A water pump comprising a pump body (2) and a pump head (1) according to any one of claims 1 to 7, wherein the pump body (2) comprises a base (23), a driving assembly (22) and a piston assembly (21), the base (23) is used for mounting the driving assembly (22) and the piston assembly (21), the pump head (1) is connected with the piston assembly (21), and the driving assembly (22) drives the piston assembly (21) to move.

9. The water pump as claimed in claim 8, wherein the base (23) is provided with a fixing portion (231), and the fixing portion (231) is provided with one or more fixing holes (2310).

10. A water pump according to claim 8, wherein the base (23) is further provided with a photoelectric switch (232), the driving assembly (22) comprises a motor (221) and an eccentric wheel (222), the motor (221) drives the eccentric wheel (222) to rotate, and the photoelectric switch (232) is used for sensing and recording the number of rotations of the eccentric wheel (222).

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