阅读说明：本技术 一种自吸泵的泵体结构 (Pump body structure of self-priming pump ) 是由 卿圣普 李卫根 于 2019-10-21 设计创作，主要内容包括：本发明公开了一种自吸泵的泵体结构,涉及水泵技术,用于解决普通自吸泵使用噪音大的问题,包括进水腔、出水腔、叶轮腔、进水流道,进水腔、出水腔和叶轮腔在泵体内呈三角分布,进水流道依次将进水腔与叶轮腔、叶轮腔与出水腔进行连通,进水腔与出水腔之间设有隔板,隔板靠近叶轮腔一侧的表面呈圆弧状,该表面所在圆的直径与叶轮腔的外圈直径相等,隔板的圆弧状表面上且靠近出水腔的一侧开设有降噪槽口,降噪槽口使隔板与叶轮之间形成半封闭的消音空腔；本发明具有以下优点和效果：隔板与叶轮腔之间由降噪槽口所形成的消音空间能够将水中的气泡分散开来爆破,使得气泡所产生的冲击波能够相互抵消,从而达到降低自吸泵运行过程中噪音的目的。(the invention discloses a pump body structure of a self-priming pump, which relates to the water pump technology and is used for solving the problem of high noise generated by the use of a common self-priming pump, and comprises a water inlet cavity, a water outlet cavity, an impeller cavity and a water inlet flow channel, wherein the water inlet cavity, the water outlet cavity and the impeller cavity are distributed in a triangular manner in a pump body; the invention has the following advantages and effects: the silencing space formed by the noise reduction notch between the partition plate and the impeller cavity can disperse and explode the bubbles in the water, so that shock waves generated by the bubbles can be mutually offset, and the purpose of reducing noise in the operation process of the self-priming pump is achieved.)

1. The utility model provides a pump body structure of self priming pump, includes intake antrum (1), goes out water cavity (2), impeller cavity (3), water inlet flow way (4), its characterized in that: intake chamber (1), play water cavity (2) and impeller cavity (3) are triangular distribution in the pump body, intake runner (4) communicate intake chamber (1) and impeller cavity (3), impeller cavity (3) and play water cavity (2) in proper order, be equipped with baffle (5) between intake chamber (1) and play water cavity (2) and carry out the separation, baffle (5) are circular-arc near the surface of impeller cavity (3) one side, and the diameter of this surface place circle equals with the outer lane diameter of impeller cavity (3), the circular-arc of baffle (5) is on the surface and is close to one side of going out water cavity (2) and has seted up and fall notch (51) of making an uproar, fall notch (51) of making an uproar and make and form semi-enclosed amortization cavity between baffle (5) and the impeller.

2. the pump body structure of the self ~ priming pump according to claim 1, wherein the inner wall of the noise reduction notch (51) is inclined towards the side far away from the impeller cavity (3), the inclination angle between the inner wall and the horizontal plane is 15 ~ 20 degrees, and the transverse span of the inner wall of the noise reduction notch (51) facing the impeller cavity (3) is 2/5 of the thickness of the partition plate (5) at the position.

3. The pump body structure of a self-primer pump of claim 2, wherein: the noise reduction notch (51) is arranged in a concave manner towards one side far away from the impeller cavity (3) opposite to the inner wall of the impeller cavity (3).

4. The pump body structure of a self-primer pump of claim 1, wherein: baffle (5) are located the horizontal protrusion on the surface of one side in play water cavity (2) and are formed with and block strip (6), block that junction between strip (6) and baffle (5) and be the circular arc transition towards one side of impeller cavity (3), go out the position that water cavity (2) just is located between blocking strip (6) and impeller cavity (3) and still be provided with branch water strip (7), divide water strip (7) to divide into two left and right flow channel mouths with the opening between water inflow runner (4) and play water cavity (2), the both ends of dividing water strip (7) are separated from formation flow gap (8) that supply water to pass through respectively with the inner wall of impeller cavity (3) and block between strip (6), and block and enclose between strip (6), divide water strip (7) and baffle (5) and form acceleration flow channel (71).

5. The pump body structure of a self-primer pump of claim 4, wherein: the distance between the surface of the water dividing strip (7) back to one side of the partition plate (5) and the partition plate (5) is less than or equal to the length of the stop strip (6).

6. the pump body structure of the self ~ priming pump according to claim 4, wherein the distance between the water dividing strip (7) and the inner wall of the impeller cavity (3) is 1 ~ 2 mm.

7. The pump body structure of a self-primer pump of claim 1, wherein: and a reverse water valve mounting port (9) communicated with the outside is formed at one end of the water inlet flow channel (4) connected with the water inlet cavity (1).

8. The pump body structure of a self-primer pump of claim 1, wherein: a water outlet (21) and a water injection port (10) with threads on the inner wall are formed in one side of the water outlet cavity (2) far away from the impeller cavity (3).

Technical Field

the invention relates to the technical field of water pumps, in particular to a pump body structure of a self-sucking pump.

Background

The pump is a machine for conveying fluid or pressurizing fluid, and mainly transfers the mechanical energy of the prime mover to the liquid to increase the energy of the fluid, thereby achieving the purpose of conveying the liquid. The pump can be divided into a displacement pump, a power pump and other types of pumps according to the working principle, wherein the power pump derives the types of a self-priming pump, a submersible pump and the like according to the application scene.

The pump body structure of current self priming pump is shown in fig. 1, its inside intake antrum 1 that contains, go out water cavity 2, impeller cavity 3 to and be used for intake antrum 1, impeller cavity 3 and the water inlet flow channel 4 that goes out water cavity 2 and communicate in proper order, be equipped with baffle 5 between intake antrum 1 and the play water cavity 2 and carry out the separation, in order to keep the pumping pressure of impeller as far as possible, can let baffle 5 press close to the impeller simultaneously, so water can concentrate on that point that baffle 5 is close to the impeller on by baffle 5 after the impeller drives impact of baffle 5. In the process of pumping water by the water pump, air is inevitably pumped into the pump body, bubbles in the water are broken after colliding with the partition plate 5, and collision points are concentrated, so that the bubbles and the point of the partition plate 5 collide one by one continuously, shock waves generated by the continuous breakage of the bubbles at the point are all diffused outwards from the same central point, which means that detonation sounds generated by gas vibration during breakage are accumulated, and the noise in the starting process of the water pump is very high.

Disclosure of Invention

the invention aims to provide a pump body structure of a self-sucking pump, which can disperse bubbles in water and reduce detonation accumulation in a rupture process of the bubbles, so that the purpose of reducing the use noise of the self-sucking pump is achieved.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a pump body structure of self priming pump, includes intake antrum, play water cavity, impeller cavity, the runner of intaking, intake antrum, play water cavity and impeller cavity are the triangular distribution in the pump body, the runner of intaking communicates intake antrum and impeller cavity, impeller cavity and play water cavity in proper order, it carries out the separation to be equipped with the baffle between intake antrum and the play water cavity, the surface that the baffle is close to impeller cavity one side is circular-arcly, and the diameter of this surface place circle equals with the outer lane diameter of impeller cavity, the circular-arc of baffle is on the surface and is close to one side of going out the water cavity and has seted up the notch of making an uproar, the notch of making an uproar of making an upr.

By adopting the scheme, the distance among the three chambers can be reduced by the triangular distribution of the water inlet cavity, the water outlet cavity and the impeller cavity in the pump body, so that the three chambers are as compact as possible, the space utilization rate in the pump body can be improved, the volume of the pump body is reduced as much as possible, the length of a water inlet flow passage is shortened as much as possible, and the pumping efficiency of water is improved; the distance between the partition plate and the impeller can be increased in the silencing space, and after the air-water mixture enters the silencing space, bubbles in water can be dispersed in the silencing space, so that when the bubbles are broken due to collision with the inner wall of the noise reduction notch, the bubbles are dispersed and broken at the same time, shock waves generated when a single bubble is broken meet shock waves of adjacent bubbles in the outward diffusion process, and the shock waves generated when the bubbles in the same row are broken are mutually offset, so that the purpose of reducing noise is achieved; and because the bubble is broken on the inner wall of the notch of making an uproar that falls, distance between bubble and the impeller can be bigger than ordinary self priming pump so, and the shock wave of each bubble transmits the impeller after offsetting each other again simultaneously, and its impact force that receives will be far less than the impact force that its impeller received when ordinary self priming pump starts, and the cavitation of impeller is impaired also can be a little so, consequently sets up the life who still is favorable to the extension impeller like this.

the impeller is further provided with a noise reduction notch, wherein the inner wall of the noise reduction notch inclines towards one side far away from the impeller cavity, the inclination angle between the inner wall and the horizontal plane is 15 ~ 20 degrees, and the transverse span of the noise reduction notch, which is opposite to the inner wall of the impeller cavity, is 2/5 of the thickness of the partition plate at the position.

by adopting the scheme, the inner wall of the noise reduction notch is obliquely arranged so that the caliber of the noise reduction space is slightly reduced in the process of extending from outside to inside, the noise reduction notch has the advantages that water flow can be guided to the water outlet cavity after being contacted with the inner wall of the noise reduction notch, meanwhile, the inclination angle of 15 ~ 20 degrees can ensure that bubbles can be dispersed in the noise reduction notch, the contact position between the bubbles and the inner wall of the noise reduction notch is more concentrated to a certain point when the bubbles and the inner wall of the noise reduction notch are completely parallel, the explosion point can be completely concentrated on one point when the bubbles and the inner wall of the noise reduction notch are completely parallel, therefore, the inclination angle is controlled in a reasonable range, meanwhile, the transverse span of the noise reduction notch cannot directly penetrate through the thickness of the partition plate, otherwise, the water outlet cavity and the water inlet cavity are communicated, water can possibly return to the water inlet end of the water inlet channel through the noise reduction notch under the pumping of the impeller, the water pressure of the self ~ priming pump is too low, the pumping efficiency of the self ~ priming pump is influenced, the pumping efficiency of the self ~ priming pump is set, the air inlet channel is set to be 2/5 that the partition plate is located in the partition plate, the noise reduction notch, the air inlet channel can be continuously broken, and the impact on the partition plate can be continuously generated.

The invention is further provided with: the noise reduction notch is arranged in a concave manner towards one side far away from the impeller cavity opposite to the inner wall of the impeller cavity.

Through adopting above-mentioned scheme, the indent sets up the back, and this inner wall of the notch of making an uproar can be circular-arcly, and gas, water mixture fall the notch back of making an uproar like this, and the shock wave that produces when the bubble of aquatic breaks can walk along this arc surface, at the in-process of walking, because arc surface area of contact is bigger, consequently the impact force of impact force to the baffle will correspondingly weaken, can reduce the cavitation erosion damage of this impact force to the baffle like this to the life of the extension pump body.

The invention is further provided with: the baffle is located the horizontal protrusion on the surface of play intracavity one side and is formed with and blocks the strip, it is the circular arc transition just towards one side of impeller cavity to block junction between strip and the baffle, it still is provided with the branch water strip to go out the intracavity and be located the position that blocks between strip and the impeller cavity, divide the water strip to cut into two left and right flow channel mouths with the opening between the water inflow runner and the play water cavity, divide the both ends of water strip respectively with the inner wall of impeller cavity and block and be separated from between the strip and form the flow gap that supplies water to pass through, and block and enclose between strip, branch water strip and the baffle and form the runner with higher speed.

By adopting the scheme, due to the blocking effect of the blocking strip, the water outlet direction of the water between the water distribution plate and the partition plate is crossed with the water outlet direction of the other side of the water distribution plate, so that the water is in contact with the inner wall of the water outlet cavity far away from one side of the partition plate under the guiding effect of the blocking strip and is shunted along the two sides of the inner wall of the water outlet cavity, and the water flowing towards one side of the impeller cavity can block the water in the area, so that the water between the water distribution strip and the inner wall of the water outlet cavity can generate pressurized energy storage under the action of the water continuously conveyed by the impeller, and the water in the water outlet cavity can be pumped under higher water pressure.

The invention is further provided with: the distance between the surface of one side of the water dividing strip, which is back to the partition plate, and the partition plate is less than or equal to the length of the barrier strip.

If the distance between the surface of the water dividing strip opposite to one side of the partition plate and the partition plate is smaller than the length of the barrier strip, the outlet direction of a flow gap formed between the water dividing strip and the barrier strip inclines towards one side far away from the impeller cavity, so that the water is accelerated to be taken out of the water cavity, and the water pressure is lower than that of the prior water pressure without the water dividing strips and the barrier strips, by adopting the proposal, after the distance between the surface of the water dividing strips back to the side of the partition plate and the partition plate is less than or equal to the length of the barrier strips, the water outlet direction of the flow gap formed between the water dividing strip and the barrier strip is vertical to the water outlet direction of the part enclosed between the water dividing strip and the inner wall of the water outlet cavity, thus ensuring that water can vertically impact the inner wall of the water outlet cavity to form two-side flow distribution after flowing out from the flow gap, and then the water on the other side of the partition plate is blocked, so that a pressurized energy storage area can be formed in the water outlet cavity.

the impeller is further provided with a distance of 1-2 mm between the water dividing strip and the inner wall of the impeller cavity.

Through adopting above-mentioned scheme, set up the clearance between branch water strip and the impeller cavity, in fact set up the clearance between branch water strip and the impeller, and this clearance must exist, otherwise divide water strip and impeller to press close to excessively, water will all strike on dividing the water strip, that will produce the concentrated fracture of bubble and produce the superimposed problem of noise, consequently, divide and must set up the clearance between water strip and the impeller, make partly water can strike the baffle through the clearance between impeller and the branch water strip, there is the impact of dividing the water strip to share the bubble like this, the cracked bubble number on the baffle will corresponding reduction at the same moment then, in addition water itself has the effect that weakens the sound propagation, consequently, noise when can further weaken the self priming pump and start.

The invention is further provided with: and one end of the water inlet flow passage connected with the water inlet cavity is provided with a reverse water valve mounting port communicated with the outside.

by adopting the scheme, the reverse-flow valve mounting port is used for mounting the reverse-flow valve during the assembly of the self-priming pump, and because the water outlet cavity is provided with a pressurization area, when the self-priming pump stops operating, the water pressure in the water outlet cavity can be higher than the water pressure in the water inlet cavity, so that water is possibly inverted, and therefore the reverse-flow valve needs to be mounted to balance the water pressures on two sides.

The invention is further provided with: and one side of the water outlet cavity, which is far away from the impeller cavity, is provided with a water outlet and a water injection port with a thread on the inner wall.

Through adopting above-mentioned scheme, the self priming pump is air in can the self-suction, the exhaust pipe way, but the air suction can produce the damage of certain degree to the impeller like this, consequently sets up the water filling port and can conveniently toward the pump body and the interior water injection of pipeline to be favorable to protecting the pump body.

In conclusion, the invention has the following beneficial effects:

1. The silencing space formed by the noise reduction notch between the partition plate and the impeller cavity can disperse and explode bubbles in water, so that shock waves generated by the bubbles can be mutually offset, and the aim of reducing noise in the operation process of the self-priming pump is fulfilled;

2. The inner wall of the noise reduction notch is recessed inwards, so that the broken contact surface of the bubbles can be integrally prolonged, and shock waves generated after the bubbles are broken can be dispersed as much as possible, so that cavitation damage to the partition plate is reduced;

3. Stop the strip and divide the water strip can be in the regional time of play water intracavity formation pressurization energy storage, the concentration degree when reducing the bubble and breaking to noise when further reducing the self priming pump operation.

Drawings

FIG. 1 is a pump body configuration of a prior art self-priming pump;

FIG. 2 is a sectional view of the pump body structure of the self-primer pump of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a self-priming pump of the present invention with the pump body structure shown in self-priming configuration.

In the figure: 1. a water inlet cavity; 2. a water outlet cavity; 21. a water outlet; 3. an impeller cavity; 4. a water inlet flow channel; 5. a partition plate; 51. a noise reduction notch; 6. a barrier strip; 7. water dividing strips; 71. an acceleration flow channel; 8. a flow gap; 9. a check valve mounting port; 10. a water injection port.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 2, a pump body structure of self priming pump, including intake antrum 1, go out water cavity 2, impeller cavity 3 and water inlet channel 4, according to the direction that fig. 2 demonstrates, from left to right distribute in proper order along the pump body for intake antrum 1, impeller cavity 3 and play water cavity 2, impeller cavity 3, be the triangular distribution between 2 three in impeller cavity and the play water cavity, water inlet channel 4 communicates intake antrum 1 and impeller cavity 3, impeller cavity 3 and play water cavity 2 in proper order, separate through baffle 5 between intake antrum 1 and the play water cavity 2, and water inlet channel 4's middle section distributes around impeller cavity 3, the impeller can pressurize the water in water inlet channel 4 encircles this whole section of impeller cavity 3 like this.

As shown in figure 3, the surface of the partition plate 5 close to one end of the impeller cavity 3 is arc-shaped, and the diameter of the circle of the arc-shaped surface is equal to the diameter of the outer ring of the impeller cavity 3, so that the impeller can be attached to the inner wall of the impeller cavity 3 after being installed in the impeller cavity 3, and the air tightness of the impeller when pumping water flow is increased.

In the in-process of seting up, the notch 51 of will making an uproar just inwards caves in the setting to the inner wall of impeller cavity 3 one side, this inner wall that the notch 51 of making an uproar falls in the setting messenger of indent becomes the arc surface, install the impeller this moment in the impeller cavity 3 after, can form semi-enclosed amortization cavity in notch 51 department of making an uproar between impeller and the baffle 5, gas, water mixture gets into when the amortization space under the drive of impeller, can be along the inner wall row of the notch 51 of making an uproar that falls, produced shock wave energy after the bubble of same row breaks simultaneously offsets each other, noise when reducing the self priming pump and starting. Meanwhile, the breaking position of the bubbles is separated from the impeller by the depth distance of the sound attenuation cavity, so that shock waves generated by air collapse are transmitted to the impeller after water is weakened, the cavitation damage of the bubbles to the impeller is correspondingly weakened, and the service life of the impeller is prolonged.

As shown in figure 2, a barrier strip 6 is transversely formed in the middle of the surface of the partition plate 5 at one side in the water outlet cavity 2 in an extending manner, the length direction of the barrier strip 6 is perpendicular to the inner wall of the water outlet cavity 2 at the side opposite to the partition plate 5, the connecting part of the barrier strip 6 and the partition plate 5 is in arc transition, and the transition surface is positioned at one side of the barrier strip 6 facing the impeller cavity 3.

A water diversion strip 7 is further integrally arranged in the water outlet cavity 2 and between the impeller cavity 3 and the barrier strip 6, the length direction of the water diversion strip 7 is parallel to the partition plate 5, at the moment, the water diversion strip 7 divides a through hole between the impeller cavity 3 and the water outlet cavity 2 into a left flow passage opening and a right flow passage opening, and an area defined by the water diversion strip 7, the barrier strip 6 and the partition plate 5 is an accelerating flow passage 71. the water diversion strip 7 needs to be rounded at two ends during forming, and simultaneously, the two ends of the water diversion strip are respectively separated from the barrier strip 6 and the inner wall of the impeller cavity 3 to form a flow gap 8, the distance between the water diversion strip 7 and the inner wall of the impeller cavity 3 (see figure 3) is 1 ~ 2mm, the distance between the water diversion strip 7 and the partition plate 5 needs to be smaller than or equal to the length of the barrier strip 6, so that water can be ensured to perpendicularly collide against the inner wall of the water outlet cavity 2 after being jetted from the flow gap 8 formed between the water diversion strip 7 and the barrier strip 6, and water can be further separated from the partition plate 5 in the pressurized area to form an energy storage area, and accordingly, and water can be formed in the pressurized area.

the diameter of the impeller cavity 3 is actually the outer diameter of the impeller, so that the flow gap 8 between the water dividing strip 7 and the inner wall of the impeller cavity 3 is actually the flow gap 8 between the impeller and the water dividing strip 7 after the self ~ priming pump is assembled, the distance cannot be too large, otherwise, water can directly enter the flow channel opening close to one side of the partition plate 5 through the flow gap 8, if the flow gap 8 is too small, the water can be blocked by the water dividing strip 7 and completely enter the flow channel opening far away from one side of the partition plate 5, bubbles in the water can be completely concentrated on the end point of the water dividing strip 7 to be broken, sound waves generated when the bubbles are broken are superposed, the size of 1 ~ 2mm is obtained through experiments, the distance can enable the water to simultaneously flow through the left flow channel opening and the right flow channel opening, meanwhile, a part of bubbles in the water can be intercepted, the number of bubbles entering the silencing space is reduced, meanwhile, the end part of the water dividing strip 7 is treated, the bubbles can be dispersed along the round corner, bubbles can be broken and the generated at the round corner can be mutually offset, and the self ~ priming pump can be further reduced.

A check valve mounting port 9 communicated with the outside is formed in one end, connected with the water inlet cavity 1, of the water inlet flow channel 4, and a check valve is mounted in the check valve mounting port 9 during assembly of the self-priming pump so as to balance water pressure between the water inlet cavity 1 and the water outlet cavity 2 when the self-priming pump is closed; a water outlet 21 and a water injection port 10 with threads on the inner wall are further formed in one side, away from the impeller cavity 3, of the water outlet cavity 2, a water injection bolt is installed in the water injection port 10, the water injection port 10 is closed by the water injection bolt in a normal state, and water can be added into the pump body through the water injection port 10 when needed.