Pump cavity structure for conveying solid particles and multistage pump

Abstract

The invention discloses a pump cavity structure for conveying solid particles and a multi-stage pump, and relates to the technical field of multi-stage pumps. Comprising a pump cavity mounting part, and a sand and stone stopping part is mounted on the pump cavity mounting part and used for isolating excessive sand and stones; a flow dividing control piece is mounted on the pump cavity mounting piece; the flow dividing control piece is used for dividing excessive sand and stones; a water diversion limiting piece is mounted on the pump cavity mounting piece; the water diversion limiting piece is used for measuring the water outlet quality; by the adoption of the flow dividing control piece, flow dividing can be automatically controlled when the diameter of gravel particles in inflow water exceeds the standard; the problems that according to an existing pump cavity structure and a multistage pump used for conveying solid particles, drainage and drainage of waste water containing large-particle gravel cannot be conveniently and automatically controlled, and auxiliary bubble removal during water diversion adding cannot be conveniently and automatically controlled are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of multi-stage pump, in particular to a pump cavity structure for conveying solid particles and a multi-stage pump. BACKGROUND

[0002] The multi-stage pump is a centrifugal pump which realizes fluid step-by-step pressurization by connecting multiple impellers in series. The core value of the multi-stage pump is to break through the lift limit of the single-stage pump. The multi-stage pump is widely used in mine drainage and other work, which can significantly improve the drainage efficiency. The current pump cavity structure for conveying solid particles and the multi-stage pump are not convenient for optimizing the multi-stage impeller structure form. Long-term conveying of large particles impurities can cause serious wear in the pump cavity. It is also easy to block the impeller. It is not convenient to automatically control the drainage and discharge of wastewater containing large particles of sand and stone. At the same time, the traditional multi-stage pump is not convenient to limit the amount of added water. When the water quantity is not up to standard, directly starting the multi-stage pump motor can cause pumping failure. At the same time, it is not convenient to automatically control the auxiliary defoaming when adding water. The impeller and other structures in the pump cavity can affect the addition of water, causing hollowing. The amount of water added is not up to standard, which can cause the multi-stage pump to idle and other problems.

[0003] Therefore, we propose a pump cavity structure for conveying solid particles and a multi-stage pump. SUMMARY

[0004] The purpose of the present application is to provide a pump cavity structure for conveying solid particles and a multi-stage pump to solve the problem of the current pump cavity structure for conveying solid particles and the multi-stage pump which is not convenient for automatically controlling the drainage and discharge of wastewater containing large particles of sand and stone, and is not convenient for automatically controlling the auxiliary defoaming when adding water.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a pump cavity structure for conveying solid particles, comprising a pump cavity mounting member, a sand and stone stop member is installed on the pump cavity mounting member, and the sand and stone stop member is used to isolate oversize sand and stone; a shunt control member is installed on the pump cavity mounting member; the shunt control member is used to shunt oversize sand and stone; a water introduction limiting member is installed on the pump cavity mounting member; the water introduction limiting member is used to determine the quality of the outflow; a water introduction defoaming member is installed on the pump cavity mounting member; the pump cavity mounting member comprises a pump cavity shell and a shunt ring, and a row of shunt rings is fixedly installed inside the pump cavity shell; two supporting legs are arranged at the bottom of the pump cavity shell.

[0006] Preferably, the pump cavity mounting member further comprises a pump cavity end cover and a water inlet pipe, and the pump cavity shell is fixedly installed with a pump cavity end cover at each end through bolts; the pump cavity shell is fixedly installed with a water inlet pipe, and a flange is arranged on the water inlet pipe; bearings are arranged on the two pump cavity end covers, respectively.

[0007] Preferably, the sand and stone stopper includes: a stop frame, a blocking switch, an isolation frame, an isolation net and a cavity fixing frame, the stop frame is fixedly installed inside the pump chamber shell; the stop frame is provided with four through slots; four blocking switches are fixedly installed on the back of the stop frame; an isolation frame is slidably inserted on the stop frame; four isolation nets are fixedly installed on the isolation frame; the four isolation nets respectively pass through the four through slots provided on the stop frame; the cavity fixing frame is fixedly sleeved in the pump chamber shell; the cavity fixing frame is provided with three through slots; the isolation frame is squeezed and fitted with the blocking switch.

[0008] Preferably, the sand and stone stopper further includes: an anti-accidental touch spring, wherein the anti-accidental touch spring is fixedly mounted on the isolation frame; and the other end of the anti-accidental touch spring is fixedly mounted on the cavity fixing frame.

[0009] Preferably, the diverter control component includes: a diverter pipe, a control shaft, a stop plate, an upper electromagnet, a lower electromagnet and a discharge pipe, the diverter pipe is fixedly mounted on the pump chamber housing; the diverter pipe is located on the front side of the isolation net; a control shaft is slidably inserted on the diverter pipe; a stop plate is fixedly mounted on the bottom of the control shaft; the stop plate is a sloped structure; the stop plate is attached to the inner side of the pump chamber housing; an upper electromagnet is fixedly mounted on the top of the control shaft; a lower electromagnet is fixedly mounted on the diverter pipe; a spring is sleeved on the control shaft, and the spring on the control shaft is connected between the upper electromagnet and the diverter pipe; a discharge pipe is fixedly mounted on the side of the diverter pipe, and a flange is provided on the discharge pipe; the upper electromagnet, the lower electromagnet and the shielding switch are connected in series with a power supply.

[0010] Preferably, the water diversion limiting component includes: a water diversion mounting pipe and a water diversion pipe, the water diversion mounting pipe is fixedly mounted on the pump chamber shell; a flange is provided on the water diversion mounting pipe; a water diversion pipe is fixedly mounted on the water diversion mounting pipe; the water diversion pipe is a right-angle bend structure; an electromagnetic valve is provided on the water diversion pipe; the water diversion pipe is connected to the water diversion mounting pipe.

[0011] Preferably, the water diversion limiting component also includes: a float, a stop cylinder and a water diversion switch, the float is sleeved on the water diversion mounting pipe; the float is a cylindrical structure; the stop cylinder is fixedly sleeved inside the water diversion mounting pipe; the float is sleeved on the stop cylinder; the float is a hollow structure; the water diversion switch is fixedly installed on the bottom of the stop cylinder; the top of the float is attached to the water diversion switch.

[0012] Preferably, the water diversion and defoaming component includes: a drive motor and a one-way bearing, the drive motor is fixedly mounted on the front end cover of the pump chamber; a one-way bearing is fixedly mounted on the output shaft of the drive motor; the one-way bearing is used to prevent jamming; the drive motor and the solenoid valve on the water diversion pipe are electrically connected to the power switch.

[0013] Preferably, the water guide defoaming piece further comprises an internal gear fixedly installed on the outer ring of the one-way bearing.

[0014] A multi-stage pump comprising the pump cavity structure for conveying solid particles and further comprising a rotor shaft rotatably installed on two pump cavity end covers; the rotor shaft is provided with a pulley at the end; the pulley at the end of the rotor shaft is connected to a motor through a belt; the motor connected to the pulley at the end of the rotor shaft is connected in series with a water guide switch; the rotor shaft is located inside the pump cavity shell; a half-open impeller is fixedly installed on the rotor shaft and attached to a stop frame; a row of closed impellers is fixedly installed on the rotor shaft, and each closed impeller corresponds to a row of shunt rings; an external gear is fixedly installed on the rotor shaft; a row of meshing teeth is arranged on the inner side of the external gear; the external gear is engaged with an internal gear; the rotor shaft passes through the stop frame, the isolation frame, the anti-misoperation spring and the cavity fixing frame.

[0015] Compared with the prior art, the present application has the following advantages: The present application adopts a row of closed impellers cooperating with the half-open impeller at the end to ensure the advantages of high lift of the multi-stage pump, prevent the risk of wear caused by large particle solid impurities, improve the actual protection effect, and reduce the wear risk inside the pump cavity shell; the shunt control member can automatically control the shunting when the diameter of the sand and stone particles exceeds the standard in the presence of water inflow, can maintain pumping by the half-open impeller, can automatically control the shunt pipe to be closed after the large particle sand and stone is washed away, can continue to work with high lift by the row of closed impellers, and can avoid stopping pumping directly to cause the need to add water for pumping again.

[0016] The water guide limiting member can be used to assist in controlling the amount of water added for pumping, avoid the problem of difficulty in pumping due to insufficient water added for pumping, play a role in limiting the operation specification of the staff, ensure smooth pumping, and the water guide limiting member can be used for pumping detection, and the motor connected to the pulley at the end of the rotor shaft is automatically controlled to be closed once the closed impeller is stuck or cannot continue to pump due to insufficient water added for pumping, to avoid continuous idling.

[0017] The water guide defoaming piece can automatically control the rotation of the rotor shaft and the closed impeller when injecting water, prevent a large number of air bubbles from being generated when the closed impeller is stationary, assist in avoiding the inconvenience of water injection, especially for multi-stage pumps, avoid the influence of the number of closed impellers on the water injection effect, and avoid the staff forgetting to manually rotate the rotor shaft. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the pump cavity structure for conveying solid particles and the overall structure of the multi-stage pump. Figure 2 A cross-sectional view of a pump cavity structure and a multi-stage pump structure for conveying solid particles according to the present invention; Figure 3 A partial cross-sectional view of a pump cavity structure and a multi-stage pump for conveying solid particles according to the present invention; Figure 4 This is a schematic diagram of the pump chamber mounting structure of the present invention; Figure 5 This is a schematic structural diagram of a sand and stone stopper according to the present invention; Figure 6 This is a schematic structural diagram of a sand and stone stopper according to the present invention; Figure 7 For the present invention Figure 3 A magnified view of the structure of the middle B region; Figure 8 For the present invention Figure 2 A magnified view of the structure of the middle C region; Figure 9 For the present invention Figure 3 A magnified view of the structure of the middle D region; Figure 10 This is a schematic structural diagram of the water diversion and defoaming component of the present invention; Figure 11 This is a schematic diagram of the installation position of the external gear of the present invention.

[0019] In the figure: 1. Pump chamber mounting member; 101. Pump chamber housing; 1011. Diverter ring; 102. Pump chamber end cover; 103. Water inlet pipe; 2. Sand and stone stopper; 201. Stop frame; 2011. Blocking switch; 202. Isolation frame; 2021. Isolation net; 203. Cavity fixing frame; 204. Anti-accidental touch spring; 3. Diverter control member; 301. Diverter pipe; 302. Control shaft; 3021. Stop plate; 30 3. Upper electromagnet; 304. Lower electromagnet; 305. Discharge pipe; 4. Water diversion limiting component; 401. Water diversion mounting pipe; 402. Water diversion pipe; 403. Float; 404. Stop cylinder; 405. Water diversion switch; 5. Water diversion defoaming component; 501. Drive motor; 502. One-way bearing; 503. Internal gear; 601. Rotor shaft; 602. Semi-open impeller; 603. Closed impeller; 604. External gear. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 11 As shown: The application provides a technical scheme: a pump cavity structure for conveying solid particles, comprising a pump cavity mounting 1, a sand and stone stopper 2 installed on the pump cavity mounting 1, the sand and stone stopper 2 being used for isolating excessive sand and stone; a shunt control member 3 installed on the pump cavity mounting 1; the shunt control member 3 being used for shunting excessive sand and stone; a water diversion limiting member 4 installed on the pump cavity mounting 1; the water diversion limiting member 4 being used for determining water quality; a water diversion defoaming member 5 installed on the pump cavity mounting 1; the pump cavity mounting 1 comprising a pump cavity shell 101 and a shunt ring 1011, a row of shunt rings 1011 being fixedly installed inside the pump cavity shell 101; two supporting legs being arranged at the bottom of the pump cavity shell 101.

[0022] Among them, the pump chamber mounting member 1 also includes: a pump chamber end cover 102 and a water inlet pipe 103, and the pump chamber end covers 102 are fixedly installed at both ends of the pump chamber shell 101 by bolts; a water inlet pipe 103 is fixedly installed on the pump chamber shell 101, and a flange is provided on the water inlet pipe 103; bearings are respectively provided on the two pump chamber end covers 102; the sand and stone stopper 2 includes: a stop frame 201, a blocking switch 2011, an isolation frame 202, an isolation net 2021 and a cavity fixing frame 203, and the stop frame 201 is fixedly installed on the pump chamber shell 101 Internal; the stop frame 201 is provided with four through slots; four blocking switches 2011 are fixedly installed on the back of the stop frame 201; an isolation frame 202 is slidably inserted on the stop frame 201; four isolation nets 2021 are fixedly installed on the isolation frame 202; the four isolation nets 2021 pass through the four through slots provided on the stop frame 201 respectively; the cavity fixing frame 203 is fixedly sleeved in the pump chamber shell 101; the cavity fixing frame 203 is provided with three through slots; the isolation frame 202 is squeezed and fitted with the blocking switch 2011; sand and stone stopper 2 also includes: an anti-accidental touch spring 204, which is fixedly mounted on the isolation frame 202; the other end of the anti-accidental touch spring 204 is fixedly mounted on the cavity fixing frame 203; the diversion control component 3 includes: a diversion pipe 301, a control shaft 302, a stop plate 3021, an upper electromagnet 303, a lower electromagnet 304 and a discharge pipe 305, the diversion pipe 301 is fixedly mounted on the pump chamber housing 101; the diversion pipe 301 is located in front of the isolation net 2021; the control shaft 302 is slidably inserted into the diversion pipe 301 A stopper disc 3021 is fixedly mounted on the bottom of the control shaft 302; the stopper disc 3021 is a sloped structure; the stopper disc 3021 is attached to the inner side of the pump chamber housing 101; an upper electromagnet 303 is fixedly mounted on the top of the control shaft 302; a lower electromagnet 304 is fixedly mounted on the shunt pipe 301; a spring is sleeved on the control shaft 302, and the spring on the control shaft 302 is connected between the upper electromagnet 303 and the shunt pipe 301; a discharge pipe 305 is fixedly mounted on the side of the shunt pipe 301, and a flange is provided on the discharge pipe 305;The upper electromagnet 303, the lower electromagnet 304 and the shielding switch 2011 are connected in series with the power supply, and the sand stopper 2 is matched with the half-open impeller 602, which can prevent blockage by using the half-open impeller 602, and the shunt control member 3 can automatically control the shunt when the diameter of the sand and stone particles in the water exceeds the standard, which can avoid the blockage of the row of closed impellers 603 by large sand and stone and increase the wear of the pump cavity shell 101, can realize protection, can use the half-open impeller 602 which is not easy to block, and can realize the independent discharge of water containing sand and stone exceeding the standard, and can play a role in guiding and cleaning. At the same time, the structure can use the half-open impeller 602 to maintain suction, can automatically control the closing of the shunt pipe 301 after the large sand and stone is washed away by the flow, can maintain the high-lift extraction work through the row of closed impellers 603, can avoid stopping suction directly, and can avoid the need to add water again to start the pump. Once there is too large sand and stone that cannot pass through the isolation net 2021, the flowability of the isolation net 2021 becomes poor, the resistance acting on the isolation net 2021 increases, the isolation net 2021 is driven by water to move the isolation frame 202, and the anti-misoperation spring 204 is compressed. At this time, the isolation frame 202 moves backward, which can release the extrusion of the shielding switch 2011. At this time, the shielding switch 2011 controls the upper electromagnet 303 and the lower electromagnet 304 to be magnetically attracted, drives the control shaft 302 and the stop disc 3021 to move downward, and no longer shields the inside of the pump cavity shell 101. At this time, the larger sand and stone can be directly discharged from the shunt pipe 301, and does not need to pass through the pump cavity shell 101 and the closed impeller 603.

[0023] Among them, the water diversion limiting member 4 includes: a water diversion mounting pipe 401 and a water diversion pipe 402, the water diversion mounting pipe 401 is fixedly mounted on the pump chamber housing 101; a flange is provided on the water diversion mounting pipe 401; a water diversion pipe 402 is fixedly mounted on the water diversion mounting pipe 401; the water diversion pipe 402 is a right-angle bent structure; a solenoid valve is provided on the water diversion pipe 402; the water diversion pipe 402 is connected to the water diversion mounting pipe 401; the water diversion limiting member 4 also includes: a float 403, a stop cylinder 404 and a water diversion switch 405, the float 403 is sleeved on the water diversion mounting pipe 401; the float 403 is a cylindrical structure; the stop cylinder 404 is fixedly sleeved inside the water diversion mounting pipe 401; the float 403 is sleeved on the stop cylinder 404; the float 403 is a hollow structure; the water diversion switch 405 is fixedly mounted on the bottom of the stop cylinder 404; the top of the float 403 is attached to the water diversion switch 405, using The water diversion limiting member 4 can realize auxiliary control of the amount of water added for diversion, avoid the problem of insufficient water addition for diversion, which causes difficulty in pumping water later, and can play the role of limiting the operating specifications of the staff to ensure smooth pumping. At the same time, the water diversion limiting member 4 can be used to detect the passage of water pumping. Once the closed impeller 603 is stuck or the water cannot be pumped further due to insufficient diversion, it will automatically control and shut down the motor connected to the end of the rotor shaft 601 by the belt, so as to avoid continuous idling and causing damage to the motor. The structure is simple and reasonable, and the detection is direct. The buoyancy control float 403 moves upward, squeezing the water diversion switch 405. At this time, the water level completely submerges the pump chamber shell 101, and the water diversion switch 405 turns on the motor connected to the end of the rotor shaft 601 by the belt. The switch of the motor connected to the end of the rotor shaft 601 by the belt can be manually controlled to shut down to carry out the pumping work normally.

[0024] Among them, the water diversion and defoaming component 5 includes: a driving motor 501 and a one-way bearing 502, the driving motor 501 is fixedly mounted on the front side of the pump chamber end cover 102; the output shaft of the driving motor 501 is fixedly mounted with a one-way bearing 502; the one-way bearing 502 is used to prevent jamming; the driving motor 501 and the solenoid valve on the water diversion pipe 402 are electrically connected to the power switch; the water diversion and defoaming component 5 also includes: an internal gear 503, the internal gear 503 is fixedly mounted on the outer ring of the one-way bearing 502; the water diversion and defoaming component 5 can be used to realize automatic control in When injecting water, the rotor shaft 601 is controlled to drive the closed impeller 603 to rotate to prevent a large number of hollow bubbles from being generated when the closed impeller 603 is stationary. This can help avoid the water injection being not smooth, especially for multi-stage pumps, to avoid a large number of closed impellers 603 affecting the water injection effect, and to avoid the problem that the actual water injection volume does not meet the standard due to a large number of hollow bubbles, resulting in the inability to quickly pump water even if the closed impeller 603 rotates. There is no need for traditional staff to manually rotate the rotor shaft 601, which is time-consuming and labor-intensive.

[0025] A multi-stage pump, comprising the above-mentioned pump chamber structure for conveying solid particles, further comprising a rotor shaft 601 rotatably mounted on two pump chamber end covers 102; a pulley is provided at the end of the rotor shaft 601; the pulley at the end of the rotor shaft 601 is connected to the motor via a belt; the motor connected by the belt at the end of the rotor shaft 601 is connected in series with a water diversion switch 405; the rotor shaft 601 is located inside the pump chamber housing 101; a semi-open impeller 602 is fixedly mounted on the rotor shaft 601, and the semi-open impeller 602 is attached to the stop frame 201; a row of closed impellers 603 are fixedly mounted on the rotor shaft 601, and a row of closed impellers The wheels 603 correspond to a row of diverter rings 1011 respectively; an external gear 604 is fixedly mounted on the rotor shaft 601; a circle of meshing teeth is provided on the inner side of the external gear 604; the external gear 604 meshes with the internal gear 503; the rotor shaft 601 passes through the stop frame 201, the isolation frame 202, the anti-accidental touch spring 204 and the cavity fixing frame 203, and adopts a row of closed impellers 603 to match the semi-open impeller 602 at the end, which ensures the advantage of high head of the multi-stage pump while preventing the risk of wear caused by large particles of solid impurities, thereby improving the actual protection effect and reducing the risk of wear inside the pump chamber shell 101.

[0026] The working principle of this embodiment is as follows: first, the two supporting feet at the bottom of the pump chamber shell 101 are installed on the ground concrete base through bolts, and the motor is installed on the concrete base at the same time, and the pulley at the end of the rotor shaft 601 is connected to the motor through a belt. Before pumping water, first pour in the water through the water pipe 402 to ensure smooth pumping. As the water level rises, the buoyancy controls the float 403 to move up and squeeze the water diversion switch 405. At this time, the water level completely submerges the pump chamber shell 101, and the water diversion switch 405 turns on the motor connected to the end of the rotor shaft 601 through the belt. Manual control turns off the switch of the motor connected to the end of the rotor shaft 601 through the belt to carry out normal pumping work. Similarly, once in actual operation, the closed When the impeller 603 becomes stuck or cannot continue to pump water due to insufficient water diversion, the float 403 loses buoyancy and no longer squeezes the water diversion switch 405, so the motor connected to the end of the rotor shaft 601 through the belt can be controlled to cut off power to prevent continuous operation; when water is injected, the solenoid valve on the water diversion pipe 402 is controlled to open by the external switch. When water is injected normally, the drive motor 501 is also controlled to drive the internal gear 503 to rotate, meshing and driving the external gear 604 to rotate, driving a row of closed impellers 603 to rotate together, reducing the generation of bubbles. At the same time, with the one-way locking method of the internal gear 503, even if the motor connected to the end of the rotor shaft 601 through the belt is turned on later, it will not cause jamming; When pumping water, when the rotor shaft 601 is driven to rotate, the half-open impeller 602 and the closed impeller 603 are driven to rotate to achieve water pumping. Once there is too much sand and gravel that cannot pass through the isolation net 2021, the fluidity of the isolation net 2021 becomes poor, and the resistance acting on the isolation net 2021 increases. The water force pushes the isolation net 2021 to drive the isolation frame 202 to move, compressing the anti-accidental touch spring 204. At this time, the isolation frame 202 moves backward, and the squeezing of the blocking switch 2011 can be released. At this time, the blocking switch 2011 controls the upper electromagnet 303 and the lower electromagnet 304 to pass electromagnetic suction, driving the control shaft 302 and the stop plate 3021 to move downward, and no longer blocks the pump chamber shell. 101, at this time, larger sand and gravel can be discharged directly from the diversion pipe 301, without passing through the pump chamber shell 101 and the closed impeller 603. After the sand and gravel on the isolation net 2021 are subsequently diverted and discharged, the surface resistance is reduced, and the isolation frame 202 will be squeezed by the anti-accidental touch spring 204 to reset the squeezing blocking switch 2011. At this time, the upper electromagnet 303 and the lower electromagnet 304 are powered off, and the spring on the control shaft 302 can push the stop plate 3021 to reset and stop the pump chamber shell 101 for sealing. At this time, the water flow can be restored from the pump chamber shell 101 through the closed impeller 603 for pressurization, and discharged from the water diversion installation pipe 401 to perform normal multi-stage pumping work.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pump chamber structure for conveying solid particles, comprising a pump chamber mounting member (1), a sand and stone stopper (2) being mounted on the pump chamber mounting member (1), characterized in that: The sand and gravel stopper (2) is used to isolate sand and gravel exceeding the standard; a diversion control member (3) is installed on the pump chamber mounting member (1); the diversion control member (3) is used to divert sand and gravel exceeding the standard; A water diversion limiting member (4) is installed on the pump chamber mounting member (1); the water diversion limiting member (4) is used to measure the quality of the water output; A water diversion and defoaming component (5) is installed on the pump chamber mounting component (1); The pump chamber mounting member (1) comprises: a pump chamber housing (101) and diverter rings (1011); a row of diverter rings (1011) is fixedly mounted inside the pump chamber housing (101); and two supporting feet are provided at the bottom of the pump chamber housing (101).

2. A pump chamber structure for conveying solid particles according to claim 1, characterized in that: The pump chamber mounting member (1) further comprises: a pump chamber end cover (102) and a water inlet pipe (103); the pump chamber end covers (102) are fixedly mounted on both ends of the pump chamber housing (101) by bolts; the water inlet pipe (103) is fixedly mounted on the pump chamber housing (101), and a flange is provided on the water inlet pipe (103); and bearings are respectively provided on the two pump chamber end covers (102).

3. The pump chamber structure for conveying solid particles according to claim 1, characterized in that: The sand and stone stopper (2) comprises: a stop frame (201), a blocking switch (2011), an isolation frame (202), an isolation net (2021) and a cavity fixing frame (203); the stop frame (201) is fixedly mounted inside the pump cavity housing (101); the stop frame (201) is provided with four through slots; four blocking switches (2011) are fixedly mounted on the back of the stop frame (201); an isolation frame (202) is slidably plugged into the stop frame (201); four isolation nets (2021) are fixedly mounted on the isolation frame (202); the four isolation nets (2021) respectively pass through the four through slots provided on the stop frame (201); the cavity fixing frame (203) is fixedly sleeved in the pump cavity housing (101); the cavity fixing frame (203) is provided with three through slots; and the isolation frame (202) is pressed and fitted with the blocking switch (2011).

4. A pump chamber structure for conveying solid particles according to claim 3, characterized in that: The sand and stone stopper (2) further comprises: an anti-accidental touch spring (204), wherein the anti-accidental touch spring (204) is fixedly mounted on the isolation frame (202); and the other end of the anti-accidental touch spring (204) is fixedly mounted on the cavity fixing frame (203).

5. The pump chamber structure for conveying solid particles according to claim 3, characterized in that: The diversion control member (3) comprises: a diversion pipe (301), a control shaft (302), a stop plate (3021), an upper electromagnet (303), a lower electromagnet (304) and a discharge pipe (305); the diversion pipe (301) is fixedly mounted on the pump chamber housing (101); the diversion pipe (301) is located in front of the isolation net (2021); the control shaft (302) is slidably plugged into the diversion pipe (301); the stop plate (3021) is fixedly mounted on the bottom of the control shaft (302); the stop plate (3021) is a sloped structure; the stop plate (3021) ) is attached to the inner side of the pump chamber shell (101); an upper electromagnet (303) is fixedly mounted on the top of the control shaft (302); a lower electromagnet (304) is fixedly mounted on the diverter tube (301); a spring is sleeved on the control shaft (302), and the spring on the control shaft (302) is connected between the upper electromagnet (303) and the diverter tube (301); a discharge pipe (305) is fixedly mounted on the side of the diverter tube (301), and a flange is provided on the discharge pipe (305); the upper electromagnet (303), the lower electromagnet (304) and the shielding switch (2011) are connected in series with a power supply.

6. The pump chamber structure for conveying solid particles according to claim 2, characterized in that: The water diversion limiting component (4) comprises: a water diversion installation pipe (401) and a water diversion pipe (402); the water diversion installation pipe (401) is fixedly installed on the pump chamber housing (101); a flange is provided on the water diversion installation pipe (401); the water diversion pipe (402) is fixedly installed on the water diversion installation pipe (401); the water diversion pipe (402) is a right-angle bending structure; a solenoid valve is provided on the water diversion pipe (402); and the water diversion pipe (402) is connected to the water diversion installation pipe (401).

7. A pump chamber structure for conveying solid particles according to claim 6, characterized in that: The water diversion limiting component (4) further comprises: a float (403), a stopper cylinder (404) and a water diversion switch (405); the float (403) is sleeved on the water diversion installation pipe (401); the float (403) is a cylindrical structure; the stopper cylinder (404) is fixedly sleeved inside the water diversion installation pipe (401); the float (403) is sleeved on the stopper cylinder (404); the float (403) is a hollow structure; the water diversion switch (405) is fixedly mounted on the bottom of the stopper cylinder (404); and the top of the float (403) is attached to the water diversion switch (405).

8. The pump chamber structure for conveying solid particles according to claim 6, characterized in that: The water diversion and defoaming component (5) comprises: a driving motor (501) and a one-way bearing (502); the driving motor (501) is fixedly mounted on the front pump chamber end cover (102); a one-way bearing (502) is fixedly mounted on the output shaft of the driving motor (501); the one-way bearing (502) is used to prevent jamming; the driving motor (501) and the solenoid valve on the water diversion pipe (402) are electrically connected to a power switch.

9. The pump chamber structure for conveying solid particles according to claim 8, characterized in that: The water diversion and defoaming component (5) further comprises an internal gear (503), wherein the internal gear (503) is fixedly mounted on the outer ring of the one-way bearing (502).

10. A multi-stage pump, comprising a pump chamber structure for conveying solid particles according to any one of claims 1 to 9, further comprising a rotor shaft (601) rotatably mounted on two pump chamber end covers (102); a pulley is provided at the end of the rotor shaft (601); the pulley at the end of the rotor shaft (601) is connected to a motor via a belt; the motor to which the end of the rotor shaft (601) is connected via a belt is connected in series with a water diversion switch (405); the rotor shaft (601) is located inside a pump chamber housing (101); a semi-open impeller (602) is fixedly mounted on the rotor shaft (601), and The semi-open impeller (602) is attached to the stop frame (201); a row of closed impellers (603) is fixedly mounted on the rotor shaft (601), and each row of closed impellers (603) corresponds to a row of diverter rings (1011); an external gear (604) is fixedly mounted on the rotor shaft (601); a circle of meshing teeth is provided on the inner side of the external gear (604); the external gear (604) is meshed with the internal gear (503); the rotor shaft (601) passes through the stop frame (201), the isolation frame (202), the anti-mistaken touch spring (204) and the cavity fixing frame (203).

Images