Chemical pump for conveying solid particles

Abstract

The chemical pump for conveying the solid particles comprises a shaft seat, a pump shaft is integrally connected to the middle of the interior of the shaft seat, a connecting disc is integrally arranged on the front surface of the shaft seat, a wheel sleeve is attached to the front surface of the connecting disc, an output pipe sleeve is integrally arranged on the upper surface of the wheel sleeve, and the output pipe sleeve communicates with the interior of the wheel sleeve; a first spiral flow guide groove is formed in the inner wall of the output pipe sleeve, the front end of the wheel sleeve is connected with an end cover through a bolt, an input pipe sleeve is integrally arranged in the middle of the front surface of the end cover, and a second spiral flow guide groove is formed in the inner wall of the input pipe sleeve. The first spiral flow guide groove in the inner wall of the output pipe sleeve and the second spiral flow guide groove in the inner wall of the input pipe sleeve can guide the flowing direction of fluid, so that the fluid flows in the pump more smoothly, the screw pitch of the first spiral flow guide groove is gradually reduced from bottom to top, and the screw pitch of the second spiral flow guide groove is gradually reduced from front to back; the fluid conveying efficiency is improved, and deposition of solid particles in the pipe is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical pumps, and specifically relates to a chemical pump for transporting solid particles. Background Art

[0002] During the chemical production process, it is often necessary to transport fluids containing solid particles. Existing chemical pumps are prone to precipitation and blockage in the pump body when transporting such media. This not only affects the normal working efficiency of the pump but also may lead to increased wear of the pump body components and shorten the service life of the pump.

[0003] The Chinese Utility Model Patent CN215762271U discloses a chemical pump capable of transporting fluids containing solid particles. A mechanical seal structure is composed of a dynamic ring and a static ring made of pressureless sintered silicon carbide material, making this structure have high hardness, good sealing performance, strong wear and corrosion resistance, and can be applicable to the transportation tasks of various fluid media, with a relatively wide application range. A shaft sleeve is sleeved on the pump shaft, and then the dynamic ring and the static ring are sleeved on the shaft sleeve to avoid direct contact between the two and the pump shaft, causing wear problems of the pump shaft. During later maintenance, compared with the pump shaft, only the more easily detachable shaft sleeve needs to be replaced, which is conducive to reducing the equipment cost and labor cost in later maintenance.

[0004] Due to the continuous friction and collision between solid particles and pump body components, leakage points are likely to occur, resulting in the leakage of chemical materials. This is a very dangerous situation in chemical production, which may trigger safety accidents and cause environmental pollution. In addition, some existing chemical pumps have poor adaptability to particles when dealing with fluids with a high solid particle content and cannot effectively transport solid particles with different particle sizes and concentrations. Summary of the Invention

[0005] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] To solve the problems raised in the above background art, the present invention adopts the following technical solutions.

[0007] A chemical pump for transporting solid particles, comprising a shaft seat. A pump shaft is integrally connected in the center of the shaft seat. A connecting disc is integrally provided on the front surface of the shaft seat. The connecting disc, the shaft seat and the pump shaft form a whole. A groove is centrally opened on the connecting disc, and a sealing ring is placed in the groove. A wheel sleeve is attached to the front surface of the connecting disc. A plurality of connecting holes are circumferentially opened on both the wheel sleeve and the connecting disc. Bolts are arranged in the connecting holes to connect the wheel sleeve and the connecting disc into a whole. When the wheel sleeve is attached to the connecting disc, the outer surface of the wheel sleeve presses on the sealing ring. The pump shaft extends into the wheel sleeve, and an impeller is fixedly sleeved at the front end of the wheel sleeve. An output pipe sleeve is integrally provided on the upper surface of the wheel sleeve, and the output pipe sleeve is internally connected to the inside of the wheel sleeve. The inner wall of the output pipe sleeve is provided with a first spiral flow guiding groove. The front end of the wheel sleeve is connected to an end cover by bolts. A central input pipe sleeve is integrally provided on the front surface of the end cover, and a second spiral flow guiding groove is opened on the inner wall of the input pipe sleeve.

[0008] Preferably, a protective sleeve is arranged in the wheel sleeve. A flange is integrally provided at the edge of the outer surface of the protective sleeve, and the flange is attached to the eaves at the front surface of the wheel sleeve and is fixed by extrusion of the end cover. A plurality of bolt holes are circumferentially opened on the eaves of the wheel sleeve, the flange of the protective sleeve and the end cover. Bolts are arranged in the bolt holes to connect the wheel sleeve, the protective sleeve and the end cover into a whole.

[0009] Preferably, a wear-resistant coating is applied on the inner surface of the protective sleeve. The wear-resistant coating is made of a ceramic composite material. A circular hole with a diameter equal to the inner diameter of the output pipe sleeve is opened on the side of the protective sleeve. When the protective sleeve is assembled in the wheel sleeve, the circular hole is aligned with the bottom of the output pipe sleeve.

[0010] Preferably, a through hole is centrally opened at the rear end of the protective sleeve. When the protective sleeve is assembled in the wheel sleeve, the pump shaft extends into the protective sleeve through the through hole, and a tapered fastening cover is threadedly connected to the end of the pump shaft.

[0011] Preferably, a cushion sleeve is threadedly connected to the pump shaft. The cushion sleeve is integrally in a frustum shape and is located behind the impeller. The diameter of the front end of the cushion sleeve is equal to the diameter of the wheel sleeve of the impeller. A shallow groove is centrally opened on the inner surface of the rear end of the wheel sleeve, and the diameter of the shallow groove is larger than that of the through hole. The rear end socket of the cushion sleeve is in the shallow groove.

[0012] Preferably, a connecting sleeve is sleeved at the tail of the shaft seat, and a motor is assembled on the rear surface of the connecting sleeve. A plurality of card slots are circumferentially and equidistantly opened on the inner surface of the connecting sleeve, and a plurality of card strips are provided on the outer surface of the tail of the shaft seat. When the shaft seat and the connecting sleeve are assembled, the card strips are fitted into the card slots.

[0013] Preferably, the pitch of the first spiral flow guiding groove gradually decreases from bottom to top, and the pitch of the second spiral flow guiding groove gradually decreases from front to back. A lubricating coating is provided on the surfaces of the first spiral flow guiding groove and the second spiral flow guiding groove. The lubricating coating is made of a polytetrafluoroethylene material.

[0014] Preferably, a premixing box is assembled on the chemical pump. The premixing box is in a gourd shape, and a first connecting pipe and a second connecting pipe are respectively connected to the upper surface of the premixing box. The first connecting pipe is sleeved with the input pipe, and the second connecting pipe is a solid particle input pipeline.

[0015] Preferably, a driver is installed on the lower surface of the larger end of the premixing box. The driving shaft of the driver penetrates through the premixing box and extends into the interior of the premixing box. A stirring blade is installed on the driving shaft of the driver. A stabilizing frame is connected to the upper part of the driving shaft through a bearing. The stabilizing frame abuts against the upper end of the inner surface of the premixing box. The second connecting pipe is installed on the upper surface of the larger end of the premixing box, and the port of the second connecting pipe is facing the stabilizing frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) In the present invention, a sealing ring is placed in the groove of the connecting disc between the connecting disc and the wheel sleeve, and the outer surface of the wheel sleeve presses on the sealing ring, ensuring the sealing of the connection between the two and preventing the leakage of the medium during the transportation of solid particles. This helps to improve the working efficiency of the chemical pump and reduce the risk of environmental pollution.

[0018] (2) In the present invention, a wear-resistant coating is applied to the inner surface of the protective sleeve, which can effectively resist the wear of solid particles on the protective sleeve and extend the service life of the protective sleeve. The protective sleeve is fixed by extrusion of the end cover, and the wheel sleeve, the protective sleeve and the end cover are connected into a whole by bolts. The structure is stable and can well protect the interior of the wheel sleeve from the wear and erosion of solid particles.

[0019] (3) In the present invention, a fastening cover and a cushion sleeve are provided on the pump shaft to completely wrap the pump shaft, which helps to protect the pump shaft from the interference of solid particles. At the same time, the setting of the cushion sleeve plays a certain buffering and positioning role. The cushion sleeve is located behind the impeller, the diameter of its front end is equal to the diameter of the wheel sleeve of the impeller, and the rear end socket is in the shallow groove on the inner surface of the rear end of the wheel sleeve, which can reduce the impact force of the impeller on the wheel sleeve during operation.

[0020] (4) The first spiral guide groove on the inner wall of the output pipe sleeve and the second spiral guide groove on the inner wall of the input pipe sleeve in the present invention can guide the flow direction of the fluid, making the fluid flow more smoothly in the pump. The pitch of the first spiral guide groove gradually decreases from bottom to top, and the pitch of the second spiral guide groove gradually decreases from front to back. This design is beneficial to reasonably guide the flow according to the flow requirements of the fluid at different positions, improve the fluid transportation efficiency, and reduce the deposition of solid particles in the pipe. A lubricating coating made of polytetrafluoroethylene material is provided on the surfaces of the first spiral guide groove and the second spiral guide groove, which can reduce the friction between solid particles and the wall surface of the guide groove and further improve the smoothness of fluid transportation.

[0021] (5) The premixing box in the present invention has a gourd-shaped structure and is provided with stirring blades inside. The driver drives the stirring blades to rotate, which can pre-stir the solid particles entering the premixing box, enabling better mixing of the solid particles and the fluid, preventing the solid particles from depositing and blocking in the premixing box or subsequent pipelines, and helping to improve the conveying capacity of the chemical pump for solid particles. The premixing box is connected to the input pipe sleeve through the first connecting pipe. The second connecting pipe is the input pipeline for solid particles, facilitating the input of solid particles and fluid. Moreover, the setting of the stabilizing frame helps to support the drive shaft of the driver and ensure the stability of the stirring blade during operation. Description of the Drawings

[0022] Figure 1 It is a three-dimensional structure diagram of the chemical pump in the present invention.

[0023] Figure 2 It is a sectional view of the chemical pump in the present invention.

[0024] Figure 3 It is a front sectional view of the chemical pump in the present invention.

[0025] Figure 4 It is of the present invention Figure 2 Local enlarged view at A.

[0026] Figure 5 It is an exploded view of the chemical pump in the present invention.

[0027] Figure 6 It is an exploded sectional view of the chemical pump in the present invention Figure 1 .

[0028] Figure 7 It is an exploded sectional view of the chemical pump in the present invention Figure 2 .

[0029] Figure 8 It is a front exploded sectional view of the chemical pump in the present invention.

[0030] Figure 9 It is a structure diagram of the pre-stirring device in the present invention.

[0031] The corresponding relationship between the reference numerals and the component names in the drawings is as follows:

[0032] 100, motor; 101, connecting sleeve; 1011, card slot; 102, shaft seat; 1021, card strip; 1022, sealing ring; 103, pump shaft; 1031, cushion sleeve; 1032, impeller; 1033, fastening cover; 104, wheel sleeve; 1041, output pipe sleeve; 10411, first spiral flow guiding groove; 105, protective sleeve; 106, end cover; 1061, input pipe sleeve; 10611, second spiral flow guiding groove; 107, premixing box; 1071, first connecting pipe; 1072, second connecting pipe; 108, driver; 1081, stirring blade; 1882, stabilizing frame. Detailed implementation manners

[0033] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0034] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0035] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other. The present invention provides the following embodiments.

[0036] Refer to Figures 1-3 This is a structural diagram of a chemical pump for transporting solid particles in this embodiment. The chemical pump in this embodiment includes a shaft seat 102. A pump shaft 103 is integrally connected in the center of the shaft seat 102. A connection disk is integrally provided on the front surface of the shaft seat 102. The connection disk, the shaft seat 102, and the pump shaft 103 form a whole. In this embodiment, the shaft seat 102 is not only a support structure for the pump shaft 103, and its integral connection method ensures the stability of the pump shaft 103 during operation. And according to Figure 6 As shown, a cavity is provided inside the shaft seat 102, which can be filled with coolant. The coolant is conducted through the pump shaft 103 to cool the heating area to ensure that the pump shaft 103 will not be damaged due to overheating during high-speed rotation or long-term operation. And filling the cavity inside the shaft seat 102 with liquid can increase the self-weight, so that the shaft seat 102 remains stable during rotation. A wheel sleeve 104 is attached to the front surface of the connection disk. A plurality of connection holes are circumferentially provided on both the wheel sleeve 104 and the connection disk. Bolts are provided in the connection holes to connect the wheel sleeve 104 and the connection disk into a whole. The pump shaft 103 extends into the wheel sleeve 104, and an impeller 1032 is fixedly sleeved at the front end of the wheel sleeve 104. An output pipe sleeve 1041 is integrally provided on the upper surface of the wheel sleeve 104. The output pipe sleeve 1041 is communicated with the inside of the wheel sleeve 104. The output pipe sleeve 1041 serves as the outlet for particulate matter. The front end of the wheel sleeve 104 is connected to an end cover 106 by bolts. A sealing structure, such as a rubber sealing ring or a mechanical seal, may be provided at the connection between the end cover 106 and the wheel sleeve 104. An input pipe sleeve 1061 is integrally provided in the center of the front surface of the end cover 106. The input pipe sleeve 1061 serves as the inlet for particulate matter to enter the pump body; Refer to Figure 7, Further, in this embodiment, a connecting sleeve 101 is sleeved on the tail of the shaft seat 102, and a motor 100 is assembled on the rear surface of the connecting sleeve 101. A plurality of card slots 1011 are equidistantly arranged in a circumferential manner on the inner surface of the connecting sleeve 101, and a plurality of card strips 1021 are arranged on the outer surface of the tail of the shaft seat 102. When the shaft seat 102 and the connecting sleeve 101 are assembled, the card strips 1021 are fitted into the card slots 1011. In this embodiment, the connecting sleeve 101 is sleeved on the tail of the shaft seat 102, and the fitting manner of the card slots 1011 inside it and the card strips 1021 at the tail of the shaft seat 102 not only facilitates the assembly but also can transmit the torque of the motor 100 to the shaft seat 102 and the pump shaft 103.

[0037] In this embodiment, when the motor 100 is started, the output shaft of the motor 100 drives the connecting sleeve 101 to rotate. Since the connecting sleeve 101 and the shaft seat 102 are connected by the fitting manner of the card slots 1011 and the card strips 1021, the torque is transmitted to the shaft seat 102 and the pump shaft 103. The pump shaft 103 drives the impeller 1032 to rotate at a high speed within the wheel sleeve 104. When the impeller 1032 rotates, a low-pressure area is formed at its central part, that is, near the input pipe sleeve 1061. Under the action of the external pressure, the chemical fluid is sucked into the central part of the impeller 1032 through the input pipe sleeve 1061. As the impeller 1032 rotates, the fluid is driven by the blades of the impeller 1032 and is thrown towards the edge of the impeller 1032 under the centrifugal force of the impeller 1032. And in this process, the speed and pressure of the fluid are both increased. Then, the high-pressure fluid enters the inside of the wheel sleeve 104 and is conveyed to the required place through the output pipe sleeve 1041. During the whole process, the sealing performance between components such as the connecting disc, the wheel sleeve 104, and the end cover 106 ensures that the fluid flows along the predetermined path without leakage or backflow; refer to Figure 8 , Further, to ensure the sealing performance, a groove is centrally opened on the connecting disc of the shaft seat 102 in this embodiment, and a sealing ring 1022 is placed in the groove. When the wheel sleeve 104 is attached to the connecting disc, the outer surface of the wheel sleeve 104 presses on the sealing ring 1022; refer to Figure 4In this embodiment, a first spiral guide groove 10411 is provided on the inner wall of the output pipe sleeve 1041, and a second spiral guide groove 10611 is provided on the inner wall of the input pipe sleeve 1061. The pitch of the first spiral guide groove 10411 gradually decreases from bottom to top, and the pitch of the second spiral guide groove 10611 gradually decreases from front to back. In this embodiment, the first spiral guide groove 10411 and the second spiral guide groove 10611 on the inner wall of the input pipe sleeve can guide the flow direction of the fluid, so that the fluid flows more smoothly in the pump. The pitch of the guide groove 10411 gradually decreases from bottom to top, and the pitch of the second spiral guide groove 10611 gradually decreases from front to back. This design is conducive to reasonable diversion according to the flow requirements of the fluid at different positions, improving the fluid transportation efficiency, and reducing the deposition of solid particles in the pipe. The surface of the first spiral guide groove 10411 and the second spiral guide groove 10611 is provided with a lubricating coating. The lubricating coating is made of polytetrafluoroethylene material, which can reduce the friction between the solid particles and the wall of the guide groove, and further improve the smoothness of fluid transportation.

[0038] See also Figure 5, a protective sleeve 105 is provided inside the wheel sleeve 104. The protective sleeve 105 plays an important protective role inside the wheel sleeve 104. A flange is integrally provided at the outer surface edge of the protective sleeve 105. The flange structure can not only be closely attached to the cornice at the front surface of the wheel sleeve 104, but also be fixed by extrusion of the end cover 106 during assembly, forming a stable connection structure. During actual production, the thickness and width of the flange are carefully designed. The thickness should ensure sufficient strength to withstand the forces from internal fluids and external extrusion, and the width should ensure that it can cover a sufficient area of the cornice of the wheel sleeve 104, thereby ensuring the reliability of sealing and connection. A plurality of bolt holes are circumferentially provided at the cornice of the wheel sleeve 104, the flange of the protective sleeve 105, and the end cover 106 to achieve uniform force distribution. Bolts are provided in the bolt holes to connect the wheel sleeve 104, the protective sleeve 105, and the end cover 106 into a whole. A wear-resistant coating is applied to the inner surface of the protective sleeve 105. The wear-resistant coating is made of a ceramic composite material. The ceramic composite material in this embodiment has many excellent properties. Ceramic particles are evenly distributed in the composite material matrix, making the coating have high hardness and high wear resistance. Its hardness may reach above HRA90, and it can effectively resist the erosion and wear of solid particles that may be carried in chemical fluids. At the same time, this ceramic composite material also has certain chemical stability and can resist the corrosion of chemical fluids. A round hole with a diameter equal to the inner diameter of the output pipe sleeve 1041 is provided on the side of the protective sleeve 105. When the protective sleeve 105 is assembled inside the wheel sleeve 104, the round hole is directly opposite to the bottom of the output pipe sleeve 1041. In this embodiment, the round hole ensures that the chemical fluid can flow smoothly when flowing from the inside of the protective sleeve 105 to the output pipe sleeve 1041. The edge of the round hole is chamfered to reduce the resistance of fluid flow and prevent the formation of eddy currents or unnecessary pressure losses at the edge of the round hole.

[0039] Refer to Figure 6 and Figure 8, a through hole is centrally provided at the rear end of the protective sleeve 105. When the protective sleeve 105 is assembled in the wheel sleeve 104, the pump shaft 103 extends into the protective sleeve 105 through the through hole. A fastening cover 1033 with a conical structure is threadedly connected to the end of the pump shaft 103. A spacer sleeve 1031 is threadedly connected to the pump shaft 103. The spacer sleeve 1031 is integrally in a frustum shape. When the pump shaft 103 rotates at a high speed, the spacer sleeve 1031 can absorb part of the vibration transmitted by the impeller 1032, reducing the impact on the pump shaft 103 and other components. Moreover, the frustum shape of the spacer sleeve 1031 enables it to bear a certain axial force in the axial direction, preventing the impeller 1032 from moving backward during operation. The spacer sleeve 1031 is located behind the impeller 1032, and the front diameter of the spacer sleeve 1031 is equal to the diameter of the wheel sleeve of the impeller 1032. In this embodiment, the pump shaft 103 is completely wrapped by the fastening cover 1033 and the spacer sleeve 1031, which helps to protect the pump shaft 103 from the interference of solid particles. At the same time, the setting of the spacer sleeve 1031 plays a certain buffering and positioning role. The spacer sleeve located behind the impeller plays a role in supporting and positioning the impeller 1032. Further, a shallow groove is centrally provided on the inner surface of the rear end of the wheel sleeve 104. The diameter of the shallow groove is larger than that of the through hole. The rear end socket of the spacer sleeve 1031 is in the shallow groove, and the inner wall of the shallow groove is polished smoothly to reduce the friction of the rear end socket of the spacer sleeve 1031 in the shallow groove. The matching method of the rear end socket of the spacer sleeve 1031 in the shallow groove not only ensures the axial positioning of the spacer sleeve 1031 but also provides a certain movement space for the spacer sleeve 1031 in the radial direction to adapt to the possible small radial displacement of the pump shaft 103 during operation, which helps to improve the stability and reliability of the entire chemical pump structure and reduce the stress concentration phenomenon caused by excessive restraint between components..

[0040] Refer to Figure 9, a premixing box 107 is assembled on the chemical pump. The premixing box 107 is in a gourd shape, and the upper surface of the premixing box 107 is respectively connected with a first connecting pipe 1071 and a second connecting pipe 1072. Among them, the first connecting pipe 1071 is connected with the input pipe sleeve 1061, and the second connecting pipe 1072 is a solid particle input pipeline. A driver 108 is installed on the lower surface of the larger end of the premixing box 107. The drive shaft of the driver 108 penetrates through the premixing box 107 and extends into the interior of the premixing box 107. A stirring blade 1081 is installed on the drive shaft of the driver 108. A stabilizing frame 1082 is connected to the drive shaft through a bearing. The stabilizing frame 1082 abuts against the upper end of the inner surface of the premixing box 107. The second connecting pipe 1072 is installed on the upper surface of the larger end of the premixing box 107, and the port of the second connecting pipe 1072 is facing the stabilizing frame 1082. In this embodiment, the larger end of the premixing box 107 is used to accommodate more materials for premixing operation, and the smaller end is conducive to smoothly guiding the premixed materials to the input pipe sleeve 1061. The stirring blade 1081 inside the premixing box 107 is driven by the driver 108, which can premix the solid particles entering the premixing box 107, make the solid particles better mixed with the fluid, prevent the solid particles from depositing and blocking in the premixing box 107 or the subsequent pipeline, and help improve the conveying capacity of the chemical pump for solid particles.

[0041] The above content is a further detailed description of the present invention in combination with specific embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or replacements can still be made, which should all be regarded as belonging to the protection scope determined by the claims submitted for the present invention.

Claims

1. A chemical pump for transporting solid particles, including a shaft seat (102), and a pump shaft (103) is integrally connected in the center of the shaft seat (102). It is characterized in that: A connection disk is integrally provided on the front surface of the shaft seat (102). The connection disk, the shaft seat (102), and the pump shaft (103) form a whole. A groove is centrally provided on the connection disk, and a sealing ring (1022) is placed in the groove. A wheel sleeve (104) is attached to the front surface of the connection disk. A plurality of connection holes are circumferentially provided on both the wheel sleeve (104) and the connection disk. Bolts are provided in the connection holes to connect the wheel sleeve (104) and the connection disk into a whole. When the wheel sleeve (104) is attached to the connection disk, the outer surface of the wheel sleeve (104) presses on the sealing ring (1022). The pump shaft (103) extends into the wheel sleeve (104), and an impeller (1032) is fixedly sleeved at the front end of the wheel sleeve (104). An output pipe sleeve (1041) is integrally provided on the upper surface of the wheel sleeve (104). The output pipe sleeve (1041) is internally connected to the wheel sleeve (104). A first spiral guide groove (10411) is provided on the inner wall of the output pipe sleeve (1041). The front end of the wheel sleeve (104) is connected to an end cover (106) by bolts. An input pipe sleeve (1061) is integrally provided in the center of the front surface of the end cover (106), and a second spiral guide groove (10611) is provided on the inner wall of the input pipe sleeve (1061).

2. The chemical pump for transporting solid particles according to claim 1, characterized in that: A protective sleeve (105) is provided in the wheel sleeve (104). A flange is integrally provided at the edge of the outer surface of the protective sleeve (105), and the flange fits on the eaves of the front surface of the wheel sleeve (104) and is fixed by extrusion of the end cover (106). A plurality of bolt holes are circumferentially provided on the eaves of the wheel sleeve (104), the flange of the protective sleeve (105), and the end cover (106). Bolts are provided in the bolt holes to connect the wheel sleeve (104), the protective sleeve (105), and the end cover (106) into a whole.

3. The chemical pump for conveying solid particles according to claim 2, characterized in that: A wear-resistant coating is applied on the inner surface of the protective sleeve (105). The wear-resistant coating is made of a ceramic composite material. A round hole with a diameter equal to the inner diameter of the output pipe sleeve (1041) is provided on the side of the protective sleeve (105). When the protective sleeve (105) is assembled in the wheel sleeve (104), the round hole is directly opposite to the bottom of the output pipe sleeve (1041).

4. The chemical pump for transporting solid particles according to claim 3, characterized in that: A through hole is centrally provided at the rear end of the protective sleeve (105). When the protective sleeve (105) is assembled in the wheel sleeve (104), the pump shaft (103) extends into the protective sleeve (105) through the through hole. A tapered fastening cover (1033) is threadedly connected to the end of the pump shaft (103).

5. The chemical pump for transporting solid particles according to claim 4, wherein: A pad sleeve (1031) is threadedly connected to the pump shaft (103). The pad sleeve (1031) is integrally in a frustum shape and is located behind the impeller (1032). The diameter of the front end of the pad sleeve (1031) is equal to the sleeve diameter of the impeller (1032). A shallow groove is centrally provided on the inner surface of the rear end of the wheel sleeve (104), and the diameter of the shallow groove is larger than that of the through hole. The rear end socket of the pad sleeve (1031) is in the shallow groove.

6. The chemical pump for conveying solid particles according to claim 1, characterized in that: A connecting sleeve (101) is sleeved on the tail of the shaft seat (102), and a motor (100) is assembled on the rear surface of the connecting sleeve (101). A plurality of clamping grooves (1011) are circumferentially and equidistantly formed on the inner surface of the connecting sleeve (101), and a plurality of clamping bars (1021) are arranged on the outer surface of the tail of the shaft seat (102). When the shaft seat (102) and the connecting sleeve (101) are assembled, the clamping bars (1021) are fitted into the clamping grooves (1011).

7. The chemical pump for transporting solid particles according to claim 1, characterized in that: The pitch of the first spiral diversion groove (10411) gradually decreases from bottom to top, and the pitch of the second spiral diversion groove (10611) gradually decreases from front to back. A lubricating coating is provided on the surfaces of the first spiral diversion groove (10411) and the second spiral diversion groove (10611), and the lubricating coating is made of polytetrafluoroethylene material.

8. The chemical pump for transporting solid particles according to claim 1, characterized in that: A premixing box (107) is assembled on the chemical pump. The premixing box (107) has a gourd-shaped structure, and a first connecting pipe (1071) and a second connecting pipe (1072) are respectively connected to the upper surface of the premixing box (107). The first connecting pipe (1071) is connected to the input pipe sleeve (1061), and the second connecting pipe (1072) is a solid particle input pipeline.

9. The chemical pump for conveying solid particles according to claim 8, characterized in that: A driver (108) is installed on the lower surface of the larger end of the premixing box (107). The driving shaft of the driver (108) penetrates through the premixing box (107) and extends into the interior of the premixing box (107). A stirring blade (1081) is installed on the driving shaft of the driver (108), and a stabilizing frame (1082) is connected to the driving shaft through a bearing. The stabilizing frame (1082) abuts against the upper end of the inner surface of the premixing box (107). The second connecting pipe (1072) is installed on the upper surface of the larger end of the premixing box (107), and the port of the second connecting pipe (1072) is aligned with the stabilizing frame (1082).

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