Valve body assembly with water sealing effect and water pump thereof

Abstract

The utility model relates to the field of pump bodies, in particular to a valve body assembly with a water sealing effect and a water pump thereof, the valve body assembly comprises a top cover, a valve plate and a valve seat which are sequentially assembled from top to bottom, the valve plate is assembled on the surface of the valve seat and covers the upper end face of an inner surrounding water outlet waterway and the input end of an independent water outlet waterway, and meanwhile the valve plate further covers the lower portion of a water sealing cavity; water flow enters the peripheral water inlet waterway from the first water inlet and enters the water sealing cavity through the communicating notch at the same time, the water flow entering the water sealing cavity provides pressure and presses the upper surface of the valve plate downwards, and when the water pump is in a non-working state, one part of the water flow enters the peripheral water inlet waterway, and the other part of the water flow enters the water sealing cavity through the communicating notch. Water flow in the water sealing cavity exerts downward pressure on the valve plate, so that the valve plate is tightly attached to the input ends of the inner water outlet waterway and the independent water outlet waterway, and effective sealing is formed. Along with the increase of the external hydrostatic pressure, the pressure borne by the valve plate is further enhanced, so that the leakage stopping effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump body field especially valve body assembly with water sealing effect and water pump. BACKGROUND

[0002] The diaphragm water pump is an industrial product widely used in daily life in the market, such as coffee machine, water dispenser, water purifier, floor / carpet cleaning machine and the like, and has various types and styles, because it is small in size, excellent in performance and low in cost, and gradually has the tendency to replace the electromagnetic water pump.

[0003] The current market has a large deficiency in the structure of such micro diaphragm water pumps: poor positive leakage prevention ability, when the positive leakage prevention requirement is high in some applications, it needs to be used with a one-way valve to meet the leakage prevention requirement, so that the cost advantage is reduced; and the use of the one-way valve also increases the assembly cost.

[0004] When the diaphragm water pump is in a non-working state, the sealing one-way valve arranged in the water inlet pipe only relies on the elastic force of the coil spring to block the sealing rubber head of the water inlet pipe and isolate the communication between the water inlet pipe and the first sealing cavity, when the static water pressure of the water supply equipment connected to the water inlet pipe of the diaphragm water pump becomes larger, and easily breaks through the sealing one-way valve, resulting in the problem of invalidation of the sealing one-way valve, so the overall leakage prevention effect is not good. SUMMARY

[0005] To solve the above problems, the utility model provides a valve body assembly with water sealing effect and water pump, with the increase of the external static water pressure, the water amount entering the water sealing cavity through the communication gap increases, further enhancing the pressure on the valve piece, making it more closely adhere to the corresponding position, thereby greatly improving the leakage prevention effect.

[0006] To achieve the above object, the utility model discloses technical scheme is: a valve body assembly with water sealing effect, including by top to bottom in proper order and fit top cover, valve sheet, valve seat, wherein top cover is provided with first water inlet, water sealing cavity, first water outlet, and the water sealing cavity is provided with the intercommunication gap between first water inlet, the bottom of valve seat is provided with the peripheral water inlet waterway and the inner peripheral water outlet waterway that intercommunication valve seat upper and lower surfaces, and the inner peripheral water outlet waterway is provided with independent water outlet waterway, wherein valve sheet is fitted on the surface of valve seat and covers the upper end surface of inner peripheral water outlet waterway and the input end of independent water outlet waterway, and valve sheet also covers below water sealing cavity, wherein the output end of independent water outlet waterway is in communication with the first water outlet of top cover, and water flow enters peripheral water inlet waterway from first water inlet and enters water sealing cavity through intercommunication gap, and the water flow in water sealing cavity interior provides pressure and presses down valve sheet upper surface.

[0007] Further, the inner peripheral water outlet waterway is provided with a water passing block, the water passing block is provided with an inclined water inlet channel, the valve seat is also provided with an inclined water outlet channel in communication with the inclined water inlet channel, and the inclined water inlet channel and the inclined water outlet channel form a V-shaped independent water outlet waterway.

[0008] Further, the inclined water inlet channel and the inclined water outlet channel have an included angle A, and the included angle A is 45°≦A<180°.

[0009] Further, the utility model also includes an elastic member, one end of the elastic member is tightly attached to the inner wall of the water sealing cavity, and the other end is tightly pressed against the surface of the valve sheet.

[0010] Further, the bottom of the top cover is provided with a plurality of reinforcing protrusions, and the reinforcing protrusions are tightly pressed against the upper surface of the valve sheet.

[0011] Further, the valve sheet includes a fixed peripheral member, an internal water sealing sheet, and an arc-shaped elastic sheet for connecting the fixed peripheral sheet and the internal water sealing sheet, the lower surface of the internal water sealing sheet is provided with a waterproof protrusion, and the waterproof protrusion is interference-fitted at the input end of the independent water outlet waterway under the action of the elastic member.

[0012] Further, the upper surface of the internal water sealing sheet is provided with a positioning protrusion, one end of the elastic member is sleeved on the positioning protrusion, and the other end is tightly attached to the inner wall of the water sealing cavity.

[0013] Further, the water sealing cavity is also provided with a limiting sleeve, the positioning protrusion moves to the limiting sleeve under the action of water flow and is limited.

[0014] Further, the application also provides a water pump, comprising the valve body assembly with the water sealing effect, a water valve for controlling the water flow direction, a suction and discharge assembly for sucking and discharging the water to be delivered, and the valve body assembly is buckled to the water valve; the water valve comprises a valve body and a plurality of water inlet valves and a plurality of water outlet valves arranged on the valve body, each water inlet valve and the valve body form a water inlet channel for the water to be delivered to flow along the peripheral water inlet waterway into the suction and discharge assembly; the water outlet valve and the valve body form a water outlet channel for the water to be delivered to flow along the suction and discharge assembly to the inner peripheral water outlet waterway.

[0015] The water pump has the advantages that when the water pump is in a non-working state, water flows into the first water inlet, part of the water flows into the peripheral water inlet waterway, and the other part of the water flows into the water sealing cavity through the communication gap. The water flow in the water sealing cavity exerts a downward pressure on the valve disc, so that the valve disc is tightly attached to the input end of the inner peripheral water outlet waterway and the independent water outlet waterway, thereby forming an effective seal. With the increase of the external static water pressure, the amount of water flowing into the water sealing cavity through the communication gap increases, thereby further enhancing the pressure on the valve disc, so that the valve disc is more tightly attached to the corresponding position, thereby greatly improving the leakproof effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a water pump structure schematic diagram with a valve body assembly with a water sealing effect.

[0017] Figure 2 is a sectional view structure schematic diagram of the water pump.

[0018] Figure 3 is a structure schematic diagram of the top cover.

[0019] Figure 4 is a structure schematic diagram of the valve seat.

[0020] Figure 5 is another view structure schematic diagram of the valve seat.

[0021] Figure 6 is a structure schematic diagram of the valve disc.

[0022] Figure 7 is another view structure schematic diagram of the valve disc.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] The top cover 1, the first water inlet 11, the reinforcing protrusion 12, the water sealing cavity 13, the communication gap 131, the limiting sleeve 132, the first water outlet 14, the valve seat 2, the peripheral water inlet channel 21, the inner peripheral water outlet channel 22, the second water inlet 23, the water passing block 24, the obliquely arranged water inlet channel 25, the obliquely arranged water outlet channel 26, the anti-leakage groove 27, the water valve 3, the pumping and draining assembly 4, the valve disc 5, the fixed peripheral part 51, the arc-shaped elastic sheet 52, the internal water sealing sheet 53, the positioning protrusion 531, the waterproof protrusion 532, the anti-leakage protrusion 54, the elastic part 6. DETAILED DESCRIPTION

[0025] Referring to Figures 1-7 The utility model relates to a valve body assembly with water sealing effect, which comprises a top cover 1, a valve disc 5 and a valve seat 2 arranged in sequence from top to bottom, wherein the top cover 1 is provided with a first water inlet 11, a water sealing cavity 13 and a first water outlet 14, and a communication gap 131 is arranged between the water sealing cavity 13 and the first water inlet 11; the bottom of the valve seat 2 is provided with a peripheral water inlet channel 21 and an inner peripheral water outlet channel 22 communicating with the upper and lower surfaces of the valve seat 2, and an independent water outlet channel is arranged in the inner peripheral water outlet channel 22; the valve disc 5 is arranged on the surface of the valve seat 2 and covers the upper end surface of the inner peripheral water outlet channel 22 and the input end of the independent water outlet channel, and the valve disc 5 also covers below the water sealing cavity 13; the output end of the independent water outlet channel communicates with the first water outlet 14 of the top cover 1; water flows from the first water inlet 11 into the peripheral water inlet channel 21 and enters the water sealing cavity 13 through the communication gap 131, and the water flowing into the water sealing cavity 13 provides pressure and presses the upper surface of the valve disc 5.

[0026] Further, the surface of the valve seat 2 is provided with a second water inlet 23 communicating with the peripheral water inlet channel 21.

[0027] Further, a water passing block 24 is arranged in the inner peripheral water outlet channel 22, wherein the water passing block 24 is provided with an obliquely arranged water inlet channel 25, and the valve seat 2 is also provided with an obliquely arranged water outlet channel 26 communicating with the obliquely arranged water inlet channel 25, and a V-shaped independent water outlet channel is formed between the two.

[0028] The V-shaped structure enables the water flow to smoothly turn and accelerate when passing through the independent water outlet channel, reducing the resistance caused by the sharp change of water flow direction. This design helps to reduce energy loss during water outlet and improve water outlet efficiency. In addition, the V-shaped channel design enables the water flow to maintain a relatively stable flow rate and direction during flow, avoiding the phenomenon of vortex and turbulent flow caused by turbulent water flow. This not only helps to reduce noise and vibration, but also makes the water outlet more stable and smooth.

[0029] Further, the water inlet channel 25 is obliquely arranged and connected with the water outlet channel 26, and an included angle A between the water inlet channel 25 and the water outlet channel 26 is 45°≦A<180°. The design of the oblique arrangement of the water inlet channel 25 and the water outlet channel 26 can effectively reduce the resistance of water flow in the channel by adjusting the included angle A (in the range of 45°≦A<180°, and 90° is preferred in the embodiment). Compared with the traditional U-shaped water path, the oblique design makes the water flow more smoothly when turning, reduces the energy loss and turbulence phenomenon caused by the sharp change of the water flow direction. Moreover, this design not only considers the reduction of fluid resistance, but also realizes the overall optimization of the water flow path. By arranging the water inlet channel and the water outlet channel at a certain angle, it can ensure that the water flow can flow faster to the predetermined outlet direction when passing through the independent water outlet path, and improve the flow efficiency of the water flow and the performance of the pump.

[0030] Further, the elastic member 6 is further included, one end of the elastic member 6 is tightly attached to the inner wall of the water sealing cavity 13, and the other end is tightly pressed on the surface of the valve plate 5.

[0031] Further, the lower surface of the valve plate 5 is integrally provided with a plurality of leak-proof protrusions 54, and the surface of the valve seat 2 is provided with a plurality of leak-proof grooves 27 corresponding to the leak-proof protrusions 54, and the leak-proof protrusions 54 are clamped in the leak-proof grooves 27. The clamping structure of the leak-proof protrusions 54 and the leak-proof grooves 27 makes the contact between the valve plate 5 and the valve seat 2 more closely, effectively reducing the leakage problem caused by too large gap. The physical clamping effect provides additional sealing protection for the valve body assembly. At the same time, after the leak-proof protrusions 54 are clamped into the leak-proof grooves 27, the stability of the valve plate 5 on the valve seat 2 can be increased, preventing the valve plate 5 from shifting or loosening under the condition of water flow impact or vibration. This stability is crucial to maintain the long-term sealing effect of the valve body assembly.

[0032] Further, the bottom of the top cover 1 is provided with a plurality of reinforcing protrusions 12, and the reinforcing protrusions 12 are tightly pressed on the upper surface of the valve plate 5. The reinforcing protrusions 12 are tightly pressed on the upper surface of the valve plate 5, further compressing the gap between the valve plate 5 and the top cover 1, reducing the potential leakage path. This close contact state helps to improve the sealing performance of the valve body assembly, especially in extreme working conditions such as high pressure or high temperature, which can better reflect its superiority.

[0033] Further, the valve piece 5 includes a fixed peripheral piece 51, an internal water sealing piece 53, and an arc-shaped elastic piece 52 connecting the fixed peripheral piece and the internal water sealing piece 53; wherein the lower surface of the internal water sealing piece 53 is provided with a waterproof protrusion 532 which is interference-fitted at the input end of the independent water outlet channel under the action of the elastic piece 6. The lower surface of the internal water sealing piece 53 is particularly provided with the waterproof protrusion 532 which, with the assistance of the elastic piece 6, ensures that the waterproof protrusion 532 can be tightly fitted at the input end of the independent water outlet channel. In the case of normal non-water outlet, due to the combined action of the pre-tightening force of the elastic piece 6 and the water pressure in the water sealing cavity 13, the valve piece 5 (including the internal waterproof protrusion 532 thereof) is tightly attached to the input end of the independent water outlet channel to form an interference fit; effectively preventing water from entering the independent water outlet channel without permission.

[0034] When in working condition, the water flow pressure increases to a certain extent, this force is enough to push open the valve piece 5. Specifically, after the water flow enters the valve body assembly from the first water inlet 11, part of the water flow directly acts on the upper surface of the valve piece 5, trying to push open the valve piece 5 by increasing the upward impact force. As the water flow pressure continues to increase, when this impact force overcomes the resistance provided by the valve piece 5 (and the elastic piece 6 behind it), the valve piece 5 will leave the valve seat 2 or the input end of the independent water outlet channel, thus allowing the water flow to smoothly enter the independent water outlet channel.

[0035] In addition, the arc-shaped elastic piece 52 plays a crucial role. It not only connects the fixed peripheral piece 51 and the internal water sealing piece 53, but also provides the necessary elastic deformation space when the valve piece 5 is impacted by the water flow. This design makes the valve piece 5 not only maintain sufficient rigidity, but also have certain flexibility and adaptability, which can better cope with water flow impact under different working conditions.

[0036] Further, the upper surface of the internal water sealing piece 53 is provided with a positioning protrusion 531, wherein one end of the elastic piece 6 is sleeved on the positioning protrusion 531 and the other end is tightly attached to the inner wall of the water sealing cavity 13. The positioning protrusion 531 serves as a fixed point on the internal water sealing piece 53, providing a clear installation reference for the elastic piece 6. When the elastic piece 6 is sleeved on the positioning protrusion 531, it can ensure the accurate position of the valve piece 5 in the water sealing cavity 13, avoiding problems such as reduced sealing performance or water flow turbulence caused by installation deviation. The elastic piece 6 provides stable support and fixation for the valve piece 5 through the tight connection of both ends with the positioning protrusion 531 and the inner wall of the water sealing cavity 13. This stable installation method helps to resist displacement or loosening of the valve piece 5 caused by water flow impact, vibration and other external factors, thereby ensuring long-term stable operation of the valve body assembly.

[0037] Further, a limiting sleeve 132 is arranged in the water sealing cavity 13, and the positioning protrusion 531 moves to the limiting sleeve 132 under the water flow and is limited thereby.

[0038] When the water flow passes through the valve body assembly, the inner water sealing piece 53 can be impacted by the water flow and move upward. The limiting sleeve 132 is arranged to limit the range of the movement, so as to ensure that the inner water sealing piece 53 does not move excessively upward under the water flow, thereby avoiding the sealing failure between the valve piece 5 and the valve seat 2 or the damage of the internal structure of the valve body assembly. Moreover, by limiting the maximum movement value of the inner water sealing piece 53, the limiting sleeve 132 enhances the stability of the valve body assembly during operation. Even under a large water flow impact, the valve piece 5 can be kept in a relatively fixed position, thereby reducing the performance fluctuation and noise caused by vibration or shaking.

[0039] Further, the application also provides a water pump, which comprises the valve body assembly with the water sealing effect, a water valve 3 for controlling the water flow direction, and a pumping and discharging assembly 4 for sucking and discharging the water to be delivered, wherein the valve body assembly is buckled to the water valve 3; the water valve 3 comprises a valve body and a plurality of water inlet valves 3 and a plurality of water outlet valves 3 arranged on the valve body, each water inlet valve 3 and the valve body form a water inlet channel for the water to be delivered to flow along the peripheral water inlet waterway 21 into the pumping and discharging assembly 4, and the water outlet valve 3 and the valve body form a water outlet channel for the water to be delivered to flow along the pumping and discharging assembly 4 to the inner peripheral water outlet waterway 22.

[0040] In the use scenario that the water bucket is above the water pump and the water pump is below, when the water pump is in a non-working state, the water flow enters from the first water inlet 11, part of which enters the peripheral water inlet waterway 21, and the other part enters the water sealing cavity 13 through the communication gap 131. The water flow in the water sealing cavity 13 exerts a downward pressure on the valve piece 5, so that the valve piece 5 is tightly attached to the inner peripheral water outlet waterway 22 and the input end of the independent water outlet waterway, thereby forming an effective seal. With the increase of the external static water pressure, the amount of water entering the water sealing cavity 13 through the communication gap 131 increases, which further enhances the pressure on the valve piece 5, so that it is more tightly attached to the corresponding position, thereby greatly improving the leakage prevention effect. At the same time, there is still water flow in the inner peripheral water outlet waterway 22 (for example, due to the residual water flow before the system is closed or the water retained in the pipeline), which exerts an upward pressure on the lower surface of the valve piece 5. That is, the pressure between the upper and lower surfaces of the valve piece can theoretically cancel each other out, and the presence of the elastic member 6 provides an additional guarantee for the water sealing effect. One end of the elastic member 6 is tightly attached to the inner wall of the water sealing cavity 13, and the other end is tightly pressed against the surface of the valve piece 5. This design ensures that the valve piece 5 can remain tightly attached even in the presence of a small pressure difference, preventing any small leakage.

[0041] Therefore, in the non-working state, if the water flow inside the water pump tries to continue to flow out from the first water outlet 12 (i.e. in the case of water leakage), i.e. the water flow in the inner peripheral water outlet waterway 22 needs to overcome the water pressure in the sealing cavity 13, the elastic force of the elastic member 6 and the sealing resistance between the valve disc 5 and the valve seat 2, it is possible to push open the valve disc 5 and continue to flow back. Since the reverse flow process needs to overcome a large resistance, therefore the valve body assembly can effectively prevent the medium from flowing back, and achieve good check effect.

[0042] Similarly, if the water bucket is on the water pump, when the water pump is in the non-working state, the water flow enters from the first water inlet 11, part of which enters the outer peripheral water inlet waterway 21, and the other part enters the sealing cavity 13 through the communication gap 131. The water flow in the sealing cavity 13 exerts downward pressure on the valve disc 5, so that the valve disc 5 is tightly attached to the inner peripheral water outlet waterway 22 and the input end of the independent water outlet waterway, forming an effective seal. As the external static water pressure increases, the amount of water entering the sealing cavity 13 through the communication gap 131 increases, further enhancing the pressure on the valve disc 5, making it more tightly attached to the corresponding position, thereby greatly improving the leakage prevention effect. At the same time, the inner peripheral water outlet waterway 22 still has water flow (for example, due to residual water flow before the system is closed or water retained in the pipeline), which exerts upward pressure on the lower surface of the valve disc 5. That is, the pressure between the upper and lower surfaces of the valve disc may theoretically cancel each other out, and the presence of the elastic member 6 provides additional protection for the sealing effect. The elastic member 6 is tightly attached to the inner wall of the sealing cavity 13 at one end and is tightly pressed against the surface of the valve disc 5 at the other end. This design ensures that even in the presence of a small pressure difference, the valve disc 5 can remain tightly attached, preventing any small leaks.

[0043] Therefore, in the non-working state, if the water flow inside the water pump tries to continue to flow out from the first water outlet 12 (i.e. in the case of water leakage), i.e. the water flow in the inner peripheral water outlet waterway 22 needs to overcome the water pressure in the sealing cavity 13, the elastic force of the elastic member 6 and the sealing resistance between the valve disc 5 and the valve seat 2, it is possible to push open the valve disc 5 and continue to flow back. Since the reverse flow process needs to overcome a large resistance, therefore the valve body assembly can effectively prevent the medium from flowing back, and achieve good check effect.

[0044] The above embodiments only describe the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by ordinary engineering technicians in the field shall fall within the protection scope determined by the claims of the present application.

Claims

1. A valve body assembly with a water sealing effect, characterized in that: It includes a top cover, a valve disc, and a valve seat which are assembled in sequence from top to bottom, wherein the top cover is provided with a first water inlet, a water sealing cavity, and a first water outlet, and a connecting gap is provided between the water sealing cavity and the first water inlet; the bottom of the valve seat is provided with an outer water inlet waterway and an inner water outlet waterway connecting the upper and lower surfaces of the valve seat, and an independent water outlet waterway is provided in the inner water outlet waterway, wherein the valve disc is assembled on the surface of the valve seat and covers the upper end surface of the inner water outlet waterway and the input end of the independent water outlet waterway, and the valve disc also covers the bottom of the water sealing cavity; wherein the output end of the independent water outlet waterway is connected with the first water outlet of the top cover; water flows into the outer water inlet waterway from the first water inlet and enters the water sealing cavity through the connecting gap at the same time, and the water flow entering the water sealing cavity provides pressure and presses down the upper surface of the valve disc.

2. The valve body assembly with water sealing effect according to claim 1, characterized in that: A water block is provided in the inner water outlet waterway, wherein an inclined water inlet channel is provided in the water block, and an inclined water outlet channel connected to the inclined water inlet channel is also provided in the valve seat, wherein a V-shaped independent water outlet waterway is formed between the two.

3. The valve body assembly with water sealing effect according to claim 2, characterized in that: There is an angle A between the oblique water inlet channel and the oblique water outlet channel, and the value range of the angle A is 45°≦A<180°.

4. The valve body assembly with water sealing effect according to claim 1, characterized in that: It also includes an elastic member, wherein one end of the elastic member is tightly attached to the inner wall of the water sealing cavity, and the other end is pressed tightly against the surface of the valve plate.

5. The valve body assembly with water sealing effect according to claim 1, characterized in that: The bottom of the top cover is provided with a plurality of circles of reinforcing protrusions, and the reinforcing protrusions are pressed onto the upper surface of the valve plate.

6. The valve body assembly with water sealing effect according to claim 1, characterized in that: The valve plate includes a fixed peripheral part, an internal water-sealing plate, and an arc-shaped elastic plate for connecting the fixed peripheral part and the internal water-sealing plate; the lower surface of the internal water-sealing plate is provided with a waterproof protrusion, which is interference-fitted at the input end of the independent water outlet waterway under the action of the elastic part.

7. The valve body assembly with water sealing effect according to claim 6, characterized in that: A positioning convex block is provided on the upper surface of the internal water sealing plate, wherein one end of the elastic member is sleeved on the positioning convex block, and the other end is tightly attached to the inner wall of the water sealing cavity.

8. The valve body assembly with water sealing effect according to claim 7, characterized in that: A circle of limiting sleeves is also provided in the water sealing cavity, wherein the positioning protrusions move to the limiting sleeves under the action of water flow and realize the limiting.

9. A water pump, characterized in that: It includes a valve body assembly with a water sealing effect as described in any one of claims 1 to 8, a water valve for controlling the direction of water flow, and a pumping assembly for sucking in and discharging the water to be transported, and the valve body assembly is snapped into the water valve; the water valve includes a valve body and a plurality of water inlet valves and a plurality of water outlet valves arranged on the valve body, each of the water inlet valves and the valve body forms an inlet channel for the water to be transported to flow along the outer water inlet waterway into the pumping assembly; the water outlet valve and the valve body form an outlet channel for the water to be transported to flow out along the pumping assembly to the inner water outlet waterway.

Images