A pump impeller casting structure

Abstract

The application relates to the technical field of impeller casting, in particular to a pump impeller casting structure, which comprises a lower die structure, an upper die structure and a self-cleaning mechanism, the lower die structure is fixed on a lower die base of a pump impeller casting device, the upper die structure is fixed on an upper die base of the pump impeller casting device, the upper die base is driven up and down through a first hydraulic mechanism on the pump impeller casting device, and a mounting bracket is fixedly installed at a rear position of the pump impeller casting device; the self-cleaning mechanism is composed of a mounting frame, a cleaning base, a vibration motor and an electromagnet, the cleaning base is in contact with die cavities on the lower die structure and the upper die structure, vibration is generated through the operation of the vibration motor, thereby separating iron alloy waste residues adhered to the side walls of the die cavities from the side walls of the die cavities, the cleaning base is magnetized through the electromagnet, thereby sucking up the waste residues separated from the side walls of the die cavities, and the automatic cleaning effect on the die cavities is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of impeller casting, in particular to a pump impeller casting structure. BACKGROUND

[0002] The pump impeller is the core component of the pump, which transmits the energy input by the prime mover to the liquid to make the liquid obtain kinetic energy and pressure energy.

[0003] The existing patent file with the announcement number CN112404409A discloses a high-pressure water pump impeller forming system, which includes a mounting base plate, support columns, a positioning mechanism and a cleaning mechanism. The mounting base plate is uniformly provided with support columns at the corners of the lower end, and the upper end of the mounting base plate is provided with a positioning mechanism. The mounting base plate on the side of the positioning mechanism is provided with a cleaning mechanism. The positioning mechanism includes a positioning frame, a positioning sliding block, a positioning spring, a positioning L-shaped frame, a positioning base, a positioning sliding seat, a lifting sliding rod, a lifting screw, a lifting motor, a casting cavity, a casting port and a positioning unit. The upper end of the mounting base plate is provided with a positioning frame, and the corners of the positioning frame are uniformly provided with positioning sliding blocks through sliding fit. The positioning sliding blocks are connected with the positioning frame through the positioning spring. The positioning base is installed in the positioning frame, and the positioning sliding blocks are abutted on the positioning base through the elastic force of the positioning spring. The mounting base plates on both sides of the positioning frame are provided with positioning L-shaped frames, and the lifting sliding rods are uniformly installed between the positioning L-shaped frames and the mounting base plates. The positioning sliding seat is installed on the lifting sliding rod through sliding fit. The positioning sliding seat is provided with an exhaust port for facilitating gas exhaust,

[0004] However, the cleaning mechanism in the above-mentioned scheme only drives the rotation of the scraping sliding block through the rotating cylinder to scrape the residual casting liquid in the casting port, and the small powder after scraping is cleaned by the cleaning brush on the rotating cylinder. However, this method can only separate the foreign matter adhered to the side wall of the mold cavity from the mold cavity, and cannot clean the foreign matter in the mold cavity from the mold cavity, thereby causing the above-mentioned scheme to have a large defect in actual application. Therefore, the present application provides a pump impeller casting structure to solve the above-mentioned problems. SUMMARY

[0005] The present application aims to provide a pump impeller casting structure to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a pump impeller casting structure, comprising:

[0007] A lower mold structure is fixed on the lower mold base of the pump impeller casting device.

[0008] An upper die structure is fixed on an upper die seat of the pump impeller casting equipment, and the upper die seat is driven up and down by a first hydraulic mechanism on the pump impeller casting equipment;

[0009] A self-cleaning mechanism is fixedly installed at a rear side position of the pump impeller casting equipment, a hydraulic mechanism mounting seat is fixedly installed at a rear side end of the mounting bracket, a second hydraulic mechanism is fixedly installed on the hydraulic mechanism mounting seat, a guide rod is fixedly installed between front and rear frame bodies of the mounting bracket, an X-axis moving seat is movably installed on the guide rod, a Y-axis drive structure is fixedly installed at a front end surface of the X-axis moving seat, a Y-axis moving seat is installed on the Y-axis drive structure, a self-cleaning mechanism mounting rack is fixedly installed at a front end surface of the Y-axis moving seat, and the self-cleaning mechanism is installed on the self-cleaning mechanism mounting rack.

[0010] The self-cleaning mechanism comprises a mounting frame, a cleaning seat, a vibration motor and an electromagnet.

[0011] Preferably, the mounting frame is a square frame structure, an upper first-level installation groove and an upper second-level installation groove are formed in an upper side edge of the mounting frame, a lower first-level installation groove, a lower second-level installation groove and a motor installation groove are formed in a lower side edge of the mounting frame, the upper first-level installation groove, the upper second-level installation groove, the lower first-level installation groove and the lower second-level installation groove are symmetrically provided with two groups, the upper first-level installation groove and the lower first-level installation groove are correspondingly arranged, and the upper second-level installation groove and the lower second-level installation groove are correspondingly arranged.

[0012] Preferably, an upper guide rod mounting seat is fixedly installed in the upper first-level installation groove by means of bolts, a lower guide rod mounting seat is fixedly installed in the lower first-level installation groove by means of bolts, and a guide rod is fixedly installed between the upper guide rod mounting seat and the lower guide rod mounting seat by means of a positioning nut, the cleaning seat is arranged in an inner cavity of the mounting frame, a guide rod seat is fixedly welded to a side wall of the cleaning seat, and the guide rod seat is movably arranged on the guide rod.

[0013] Preferably, a lead screw seat is fixedly welded to the side wall of the cleaning seat, an upper lead screw mounting seat is fixedly installed in the upper second-level installation groove by means of bolts, a lower lead screw mounting seat is fixedly installed in the lower second-level installation groove by means of bolts, and a transmission lead screw is rotatably installed between the upper lead screw mounting seat and the lower lead screw mounting seat, and the transmission lead screw is matched with the lead screw seat.

[0014] Preferably, the motor mounting groove is arranged corresponding to the lower secondary mounting groove, a primary servo motor is fixedly installed in the motor mounting groove, a primary transmission gear is fixedly installed on the output shaft of the primary servo motor, a primary driven gear is fixedly installed on the lower side end of the transmission screw, the primary driven gear and the primary transmission gear are arranged in engagement, and the primary servo motors on both sides are in synchronous motion.

[0015] Preferably, the cleaning seat is made of ferromagnetic material, the vibration motor mounting groove and the electromagnet mounting groove are formed in the cleaning seat, the vibration motor is fixedly installed in the vibration motor mounting groove, and the shell of the vibration motor is subjected to electromagnetic shielding treatment, and the electromagnet is fixedly installed in the electromagnet mounting groove.

[0016] Preferably, the lower side dimension of the cleaning seat matches the lower mold cavity dimension on the lower mold structure, and the upper side dimension of the cleaning seat matches the upper mold cavity dimension on the upper mold structure.

[0017] Preferably, the shaft is rotatably installed on the self-cleaning mechanism mounting frame, the motor groove is formed in the self-cleaning mechanism mounting frame, the secondary servo motor is fixedly installed in the motor groove, the secondary transmission gear is fixedly installed on the output shaft of the secondary servo motor, the secondary driven gear is fixedly installed on the shaft, and the secondary driven gear is arranged in engagement with the secondary transmission gear.

[0018] Preferably, the upper side atomizing nozzle is fixedly installed on the inner side wall of the mounting frame, the lower side atomizing nozzle is fixedly installed on the inner side wall of the mounting frame, the thickness values of the upper side atomizing nozzle and the lower side atomizing nozzle are smaller than the spacing value between the cleaning seat and the inner side wall of the mounting frame, one upper side atomizing nozzle and one lower side atomizing nozzle are arranged on each side edge of the mounting frame, and the upper side atomizing nozzle and the lower side atomizing nozzle are connected with the stripping machine supply equipment through the liquid feeding hose.

[0019] Preferably, the upper side of the lower mold structure is provided with the guide column groove at the corner position, the lower side of the upper mold structure is fixedly installed with the guide column at the corner position, the guide column is embedded into the guide column groove when the lower mold structure and the upper mold structure are closed, the upper surface of the mounting frame is provided with the emptying groove at the corner position, the emptying groove is arranged corresponding to the guide column, the guide column is embedded into the emptying groove when the self-cleaning mechanism is cleaned, and the upper and lower sides of the mounting frame are arranged in close contact with the upper mold structure and the lower mold structure, respectively.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] 1. By setting the pump impeller casting structure composed of the lower mold structure, the upper mold structure and the self-cleaning mechanism, and by setting the self-cleaning mechanism composed of the mounting frame, the cleaning seat, the vibration motor and the electromagnet, the mold cavity on the lower mold structure and the upper mold structure is contacted with the cleaning seat, then the vibration motor is operated to generate vibration effect, so that the ferroalloy waste adhered to the side wall of the mold cavity is separated from the side wall of the mold cavity, and then the cleaning seat is magnetized by the electromagnet, so that the cleaning seat absorbs the waste separated from the side wall of the mold cavity, thereby completing the automatic cleaning of the mold cavity.

[0022] 2. By setting the upper atomizing nozzle and the lower atomizing nozzle on the inner side wall of the mounting frame, after the self-cleaning mechanism completes cleaning, the upper atomizing nozzle and the lower atomizing nozzle are used to spray the mold release agent on the lower mold structure and the upper mold structure, thereby effectively improving the processing efficiency of the equipment, and due to the blocking effect of the mounting frame, the floating of the mist state mold release agent is effectively avoided, thereby avoiding the influence on the health of the workers. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure of the present application is shown in the figure;

[0024] Figure 2 The installation position of the self-cleaning mechanism of the present application is shown in the figure;

[0025] Figure 3 The Figure 2 structure in A of the figure is enlarged;

[0026] Figure 4 The self-cleaning mechanism of the present application is shown in the figure;

[0027] Figure 5 The Figure 4 structure in B of the figure is enlarged;

[0028] Figure 6 The Figure 4 structure in C of the figure is enlarged;

[0029] Figure 7 The structure of the mounting frame of the present application is shown in the figure;

[0030] Figure 8 The Figure 7 structure in D of the figure is enlarged;

[0031] Figure 9 The installation of the cleaning seat of the present application is shown in the figure;

[0032] Figure 10 The Figure 9 structure in E of the figure is enlarged;

[0033] Figure 11 The structure of the cleaning seat of the present application is shown in the figure;

[0034] Figure 12 The lower die structure schematic diagram of the present application;

[0035] Figure 13 The upper die structure schematic diagram of the present application.

[0036] In the figure: lower die structure 1, upper die structure 2, self-cleaning mechanism 3, mounting bracket 4, hydraulic mechanism mounting seat 5, second hydraulic mechanism 6, guide rod 7, X-axis moving seat 8, Y-axis driving structure 9, Y-axis moving seat 10, self-cleaning mechanism mounting rack 11, mounting frame 12, cleaning seat 13, upper primary installation groove 14, upper secondary installation groove 15, lower primary installation groove 16, lower secondary installation groove 17, motor installation groove 18, upper guide rod mounting seat 19, lower guide rod mounting seat 20, positioning nut 21, guide rod 22, guide rod seat 23, upper lead screw mounting seat 24, lower lead screw mounting seat 25, transmission lead screw 26, lead screw seat 27, primary driven gear 28, primary servo motor 29, primary transmission gear 30, vibration motor installation groove 31, electromagnet installation groove 32, lower die cavity 33, upper die cavity 34, rotating shaft 35, secondary driven gear 36, secondary servo motor 37, secondary transmission gear 38, upper atomizing nozzle 39, lower atomizing nozzle 40, guide column groove 41, guide column 42, emptying groove 43. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0038] Please refer to Figures 1-13 The present application provides the following three preferred scheme embodiments:

[0039] Embodiment one: a pump impeller casting structure, comprising a lower mold structure 1, an upper mold structure 2 and a self-cleaning mechanism 3, the lower mold structure 1 is fixed on the lower mold base of the pump impeller casting equipment, the upper mold structure 2 is fixed on the upper mold base of the pump impeller casting equipment, the upper mold base is driven up and down by the first hydraulic mechanism on the pump impeller casting equipment, the rear side position of the pump impeller casting equipment is fixedly installed with a mounting bracket 4, the rear side end of the mounting bracket 4 is fixedly installed with a hydraulic mechanism mounting seat 5, the hydraulic mechanism mounting seat 5 is fixedly installed with a second hydraulic mechanism 6, the front and rear frame bodies of the mounting bracket 4 are fixedly installed with a guide rod 7, the guide rod 7 is movably installed with an X-axis moving seat 8, the front end face of the X-axis moving seat 8 is fixedly installed with a Y-axis driving structure 9, the Y-axis driving structure 9 is installed with a Y-axis moving seat 10, the front end face of the Y-axis moving seat 10 is fixedly installed with a self-cleaning mechanism mounting rack 11, the self-cleaning mechanism 3 is installed on the self-cleaning mechanism mounting rack 11, the self-cleaning mechanism 3 comprises an installation frame 12, a cleaning seat 13, a vibration motor and an electromagnet.

[0040] The installation frame 12 is a square frame structure, an upper first-level installation slot 14 and an upper second-level installation slot 15 are formed in the upper side of the installation frame 12, a lower first-level installation slot 16, a lower second-level installation slot 17 and a motor installation slot 18 are formed in the lower side of the installation frame 12, the upper first-level installation slot 14, the upper second-level installation slot 15, the lower first-level installation slot 16, the lower second-level installation slot 17 and the motor installation slot 18 are symmetrically provided in two groups, the upper first-level installation slot 14 and the lower first-level installation slot 16 are correspondingly arranged, and the upper second-level installation slot 15 and the lower second-level installation slot 17 are correspondingly arranged.

[0041] An upper guide rod mounting seat 19 is fixedly installed in the upper first-level installation slot 14 through a bolt, a lower guide rod mounting seat 20 is fixedly installed in the lower first-level installation slot 16 through a bolt, a guide rod 22 is fixedly installed between the upper guide rod mounting seat 19 and the lower guide rod mounting seat 20 through a positioning nut 21, the cleaning seat 13 is arranged in the inner cavity of the installation frame 12, a guide rod seat 23 is fixedly welded on the side wall of the cleaning seat 13, and the guide rod seat 23 is movably arranged on the guide rod 22.

[0042] A screw rod seat 27 is fixedly welded on the side wall of the cleaning seat 13, an upper screw rod mounting seat 24 is fixedly installed in the upper second-level installation slot 15 through a bolt, a lower screw rod mounting seat 25 is fixedly installed in the lower second-level installation slot 17 through a bolt, a transmission screw rod 26 is rotatably installed between the upper screw rod mounting seat 24 and the lower screw rod mounting seat 25, and the transmission screw rod 26 is matched with the screw rod seat 27.

[0043] The motor mounting groove 18 is arranged corresponding to the lower secondary mounting groove 17, a primary servo motor 29 is fixedly installed in the motor mounting groove 18, a primary transmission gear 30 is fixedly installed on the output shaft of the primary servo motor 29, a primary driven gear 28 is fixedly installed on the lower side end of the transmission screw 26, the primary driven gear 28 and the primary transmission gear 30 are arranged in meshing, and the two sides of the primary servo motor 29 are synchronously moved.

[0044] The vibrating motor mounting groove 31 and the electromagnet mounting groove 32 are arranged on the cleaning seat 13, the vibrating motor is fixedly installed in the vibrating motor mounting groove 31, and the shell of the vibrating motor is subjected to electromagnetic shielding treatment, the electromagnet is fixedly installed in the electromagnet mounting groove 32, the cleaning seat 13 is cast from ferromagnetic material, the pump impeller casting structure is arranged by combining the lower mold structure 1, the upper mold structure 2 and the self-cleaning mechanism 3, and the self-cleaning mechanism 3 is arranged by combining the mounting frame 12, the cleaning seat 13, the vibrating motor and the electromagnet, so that the cleaning seat 13 is in contact with the mold cavity on the lower mold structure 1 and the upper mold structure 2, and then the vibrating motor is operated to generate vibration effect, so that the ferroalloy waste adhered to the side wall of the mold cavity is separated from the side wall of the mold cavity, and then the electromagnet magnetizes the cleaning seat 13, so that the cleaning seat 13 absorbs the waste separated from the side wall of the mold cavity, thereby completing the automatic cleaning of the mold cavity.

[0045] The lower side dimension of the cleaning seat 13 matches the size of the lower mold cavity 33 on the lower mold structure 1, and the upper side dimension of the cleaning seat 13 matches the size of the upper mold cavity 34 on the upper mold structure 2, so as to ensure the contact effect and further ensure the cleaning effect of the self-cleaning mechanism 3.

[0046] In the embodiment two, the shaft 35 is fixedly connected to the side wall of the mounting frame 12, the shaft 35 is rotatably installed on the self-cleaning mechanism mounting frame 11, the motor groove is arranged on the self-cleaning mechanism mounting frame 11, the secondary servo motor 37 is fixedly installed in the motor groove, the secondary transmission gear 38 is fixedly installed on the output shaft of the secondary servo motor 37, the secondary driven gear 36 is fixedly installed on the shaft 35, the secondary driven gear 36 and the secondary transmission gear 38 are arranged in meshing, the mounting frame 12 is turned over by 180 degrees by the secondary servo motor 37, so that the electromagnet is de-energized, the cleaning seat 13 is demagnetized, and the ferroalloy waste on the cleaning seat 13 falls down better.

[0047] The inner side wall of the mounting frame 12 is fixedly installed with an upper atomizing nozzle 39 at an upper side position, and is fixedly installed with a lower atomizing nozzle 40 at a lower side position. The thickness values of the upper atomizing nozzle 39 and the lower atomizing nozzle 40 are both less than the spacing value between the cleaning seat 13 and the inner side wall of the mounting frame 12. One upper atomizing nozzle 39 and one lower atomizing nozzle 40 are arranged at each side of the mounting frame 12. The upper atomizing nozzle 39 and the lower atomizing nozzle 40 are both connected with the stripping machine supply equipment through a liquid feeding hose. The upper atomizing nozzle 39 and the lower atomizing nozzle 40 are arranged on the inner side wall of the mounting frame 12, so that after the self-cleaning mechanism 3 completes cleaning, the lower mold structure 1 and the upper mold structure 2 are sprayed with a stripping agent by the upper atomizing nozzle 39 and the lower atomizing nozzle 40, thereby effectively improving the processing efficiency of the equipment. Due to the blocking effect of the mounting frame 12, the floating of the stripping agent in mist state is effectively avoided, and the health of the workers is not affected.

[0048] The upper side of the lower mold structure 1 is provided with a guide column groove 41 at a corner position. The lower side of the upper mold structure 2 is fixedly installed with a guide column 42 at a corner position. When the lower mold structure 1 and the upper mold structure 2 are closed, the guide column 42 is embedded into the guide column groove 41. The upper surface of the mounting frame 12 is provided with an emptying groove 43 at a corner position. The emptying groove 43 is arranged corresponding to the guide column 42. When the self-cleaning mechanism 3 is cleaning, the guide column 42 is embedded into the emptying groove 43. At this time, the upper and lower sides of the mounting frame 12 are arranged corresponding to the upper mold structure 2 and the lower mold structure 1, respectively.

[0049] Although the specific embodiments of the application have been described above with the aim of enabling a person skilled in the art to have a comprehensive understanding of the application, the application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, all applications created by utilizing the concept of the application within the spirit and scope of the application as defined and determined by the appended claims are included in the protection of the application.

Claims

1. A pump impeller casting structure, characterized by: include: The lower mold structure (1) is fixed on the lower mold base of the pump impeller casting equipment; The upper mold structure (2) is fixed on the upper mold base of the pump impeller casting equipment. The upper mold base is driven up and down by the first hydraulic mechanism on the pump impeller casting equipment. The self-cleaning mechanism (3) is fixedly installed with a mounting bracket (4) at the rear side of the pump impeller casting equipment. A hydraulic mechanism mounting seat (5) is fixedly installed at the rear end of the mounting bracket (4). A second hydraulic mechanism (6) is fixedly installed on the hydraulic mechanism mounting seat (5). A guide rod (7) is fixedly installed between the front and rear frames of the mounting bracket (4). An X-axis moving seat (8) is movably installed on the guide rod (7). A Y-axis drive structure (9) is fixedly installed on the front end face of the X-axis moving seat (8). A Y-axis moving seat (10) is installed on the Y-axis drive structure (9). A self-cleaning mechanism mounting frame (11) is fixedly installed on the front end face of the Y-axis moving seat (10). The self-cleaning mechanism (3) is installed on the self-cleaning mechanism mounting frame (11). The self-cleaning mechanism (3) includes a mounting frame (12), a cleaning seat (13), a vibration motor and an electromagnet, wherein the cleaning seat (13) is disposed in the inner cavity of the mounting frame (12); The cleaning seat (13) is provided with a vibration motor mounting slot (31) and an electromagnet mounting slot (32). The vibration motor is fixedly installed in the vibration motor mounting slot (31), and the outer shell of the vibration motor is electromagnetically shielded. The electromagnet is fixedly installed in the electromagnet mounting slot (32). The cleaning seat (13) is made of ferromagnetic material.

2. A pump impeller casting construction according to claim 1, characterized in that: The mounting frame (12) is a square frame structure. The upper side of the mounting frame (12) is provided with an upper primary mounting slot (14) and an upper secondary mounting slot (15). The lower side of the mounting frame (12) is provided with a lower primary mounting slot (16), a lower secondary mounting slot (17) and a motor mounting slot (18). The upper primary mounting slot (14), the upper secondary mounting slot (15), the lower primary mounting slot (16), the lower secondary mounting slot (17) and the motor mounting slot (18) are all symmetrically arranged in two sets. The upper primary mounting slot (14) and the lower primary mounting slot (16) are arranged correspondingly, and the upper secondary mounting slot (15) and the lower secondary mounting slot (17) are arranged correspondingly.

3. A pump impeller casting construction according to claim 2, characterized in that: An upper guide rod mounting seat (19) is fixedly installed in the upper first-level mounting slot (14) by bolts, and a lower guide rod mounting seat (20) is fixedly installed in the lower first-level mounting slot (16) by bolts. A guide rod (22) is fixedly installed between the upper guide rod mounting seat (19) and the lower guide rod mounting seat (20) by a positioning nut (21). A guide rod seat (23) is fixedly welded to the side wall of the cleaning seat (13), and the guide rod seat (23) is movably mounted on the guide rod (22).

4. A pump impeller casting construction according to claim 3, characterized in that: The side wall of the cleaning seat (13) is fixedly welded with a screw rod seat (27), the upper secondary installation groove (15) is fixedly installed with an upper screw rod installation seat (24) through bolts, the lower secondary installation groove (17) is fixedly installed with a lower screw rod installation seat (25) through bolts, the upper screw rod installation seat (24) and the lower screw rod installation seat (25) are rotationally installed with a transmission screw rod (26), and the transmission screw rod (26) is matched with the screw rod seat (27).

5. A pump impeller casting construction according to claim 4, characterized in that: The motor installation groove (18) is correspondingly arranged with the lower secondary installation groove (17), the motor installation groove (18) is fixedly installed with a primary servo motor (29), the output shaft of the primary servo motor (29) is fixedly installed with a primary transmission gear (30), the lower side end of the transmission screw rod (26) is fixedly installed with a primary driven gear (28), the primary driven gear (28) and the primary transmission gear (30) are meshed, and the two sides of the primary servo motor (29) are synchronously moved.

6. A pump impeller casting construction according to claim 5, characterized in that: The lower side dimension of the cleaning seat (13) is matched with the lower mold cavity (33) dimension on the lower mold structure (1), and the upper side dimension of the cleaning seat (13) is matched with the upper mold cavity (34) dimension on the upper mold structure (2).

7. A pump impeller casting construction according to claim 6, characterized in that: The side wall of the installation frame (12) is fixedly connected with a rotating shaft (35), the rotating shaft (35) is rotationally installed on the self-cleaning mechanism mounting rack (11), the self-cleaning mechanism mounting rack (11) is provided with a motor groove, the motor groove is fixedly installed with a secondary servo motor (37), the output shaft of the secondary servo motor (37) is fixedly installed with a secondary transmission gear (38), the rotating shaft (35) is fixedly installed with a secondary driven gear (36), and the secondary driven gear (36) is meshed with the secondary transmission gear (38).

8. A pump impeller casting construction according to claim 7, characterized in that: The inner side wall of the installation frame (12) is fixedly installed with an upper atomizing nozzle (39) at an upper side position, the inner side wall of the installation frame (12) is fixedly installed with a lower atomizing nozzle (40) at a lower side position, the thickness values of the upper atomizing nozzle (39) and the lower atomizing nozzle (40) are smaller than the spacing value between the cleaning seat (13) and the inner side wall of the installation frame (12), the upper atomizing nozzle (39) and the lower atomizing nozzle (40) are provided with one on each side of the installation frame (12), and the upper atomizing nozzle (39) and the lower atomizing nozzle (40) are connected with the stripping machine supply equipment through liquid supply hoses.

9. A pump impeller casting construction according to claim 8, characterized in that: The upper side of the lower mold structure (1) is provided with a guide column groove (41) at the corner position, the lower side of the upper mold structure (2) is fixedly provided with a guide column (42) at the corner position, the guide column (42) is embedded into the guide column groove (41) when the lower mold structure (1) and the upper mold structure (2) are closed, the upper surface of the mounting frame (12) is provided with an emptying groove (43) at the corner position, the emptying groove (43) is correspondingly arranged with the guide column (42), the guide column (42) is embedded into the emptying groove (43) when the self-cleaning mechanism (3) is cleaned, and at this time, the upper and lower sides of the mounting frame (12) are respectively arranged in close contact with the upper mold structure (2) and the lower mold structure (1).

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