Volute pump body casting with narrow runner

Abstract

The utility model relates to the technical field of volute pump bodies, in particular to a volute pump body casting with a narrow runner, which comprises a pump cover, a rotating shaft rotatably connected onto the pump cover, an impeller slidably connected onto the rotating shaft, a shaft sleeve abutted against the side wall of the impeller, the shaft sleeve slidably connected with the rotating shaft, and two threaded rings in threaded connection onto the rotating shaft. Wherein one threaded ring abuts against the shaft sleeve, a fixing plate is fixedly connected to the pump cover, a sliding sleeve is clamped to the fixing plate, a sliding rod is slidably connected into the sliding sleeve, a spring is fixedly connected between the sliding sleeve and the sliding rod, a connecting plate is fixedly connected to the end of the sliding rod, and the connecting plate abuts against the threaded ring close to the shaft sleeve. A fixing structure is mounted on the fixing plate; according to the centrifugal pump, the abutting tightness of the threaded ring to the shaft sleeve can be flexibly adjusted by installing the measuring structure, so that the shaft sleeve can abut against the impeller, the impeller rotates more stably, the performance of the centrifugal pump is better, and operation is more stable.

Description

Technical Field

[0001] The utility model relates to a volute pump body structural casting, in particular to a volute pump body casting with a narrow flow channel, and belongs to the technical field of volute pump bodies. Background Art

[0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. It works by using the centrifugal motion of the fluid caused by the rotation of the impeller. According to the impeller fluid discharge method, centrifugal pumps are roughly divided into two categories: volute pumps and guide vane pumps. The volute pump is a water pump that combines the volute design and centrifugal principle. It mainly includes a volute, impeller, shaft, sleeve, threaded ring and nut. During operation, the shaft, sleeve, threaded ring and nut jointly support and drive the impeller to rotate.

[0003] However, when rotating the threaded ring, it is difficult to accurately control whether the threaded ring is tight against the sleeve based on personal experience alone. If the threaded ring is not tight against the sleeve, it will be difficult for the sleeve to cooperate with the nut to tighten the impeller from both ends, resulting in loose installation of the impeller, which will have many effects on the performance, operating stability and service life of the pump. Utility Model Content

[0004] The purpose of the utility model is to provide a volute pump body casting with a narrow flow channel in order to solve the above-mentioned problem. By installing a measuring structure, the tightness of the threaded ring against the sleeve can be flexibly adjusted, so that the sleeve can be pressed against the impeller, making the impeller rotate more stably, thereby making the performance of the centrifugal pump better and the operation more stable.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme. A volute pump body casting with a narrow flow channel includes a pump cover, a main structure is installed on the pump cover, and the main structure includes a rotating shaft. The pump cover is rotatably connected to the rotating shaft, and an impeller is slidably connected to the rotating shaft. The side wall of the impeller is in contact with a shaft sleeve, and the shaft sleeve is slidably connected to the rotating shaft. Two threaded rings are threadedly connected to the rotating shaft, one of which is in contact with the shaft sleeve. A measuring structure is installed on the pump cover, and the measuring structure includes a fixing plate, a fixing plate is fixedly connected to the pump cover, a sliding sleeve is clamped on the fixing plate, a sliding rod is slidably connected in the sliding sleeve, a spring is fixedly connected between the sliding sleeve and the sliding rod, and a connecting plate is fixedly connected to the end of the sliding rod, and the connecting plate and the threaded ring close to the shaft sleeve are in contact with each other. A pump casing is installed on the pump cover, and a fixing structure is installed on the fixing plate.

[0006] Preferably, the diameter of the threaded ring is greater than the diameter of the sleeve, the connecting plate and the rotating shaft are perpendicular to each other, and two grooves are formed on the threaded ring.

[0007] Preferably, one end of the impeller facing away from the sleeve is abutted against a nut, and the nut is threadedly connected to the rotating shaft.

[0008] Preferably, the chute on the fixing plate has a trapezoidal structure, the bottom end of the sliding sleeve has a trapezoidal structure, and the sliding rod has an "L" shaped structure.

[0009] Preferably, a scale bar is provided on the sliding rod, a pointer is fixedly connected to the sliding sleeve, and the pointer is perpendicular to the scale bar.

[0010] Preferably, a first flange is fixedly connected to the pump cover, a second flange is fixedly connected to the pump housing, and the first flange and the second flange are fixedly connected by bolts.

[0011] Preferably, the fixing structure includes a clamping block, the clamping block is slidably connected to the fixing plate, a clamping groove is formed in the sliding sleeve, and the clamping block is clamped in the clamping groove.

[0012] Preferably, a pull plate is fixedly connected to the end of the clamping block, and a tension spring is fixedly connected between the pull plate and the fixing plate.

[0013] Preferably, a first mounting plate is fixedly connected to the bottom end of the pump cover, the bottom end of the first mounting plate is fixedly connected to the bottom plate, a second mounting plate is fixedly connected to the bottom plate, and a motor is mounted on the second mounting plate.

[0014] Preferably, a coupling is fixedly connected to the end of the rotating shaft facing away from the pump housing, and the coupling is fixedly connected to the output shaft of the motor.

[0015] The beneficial effects of the present utility model are as follows: a rotating shaft is rotatably connected to the pump cover, an impeller is slidably connected to the rotating shaft, a shaft sleeve abuts against the side wall of the impeller, the shaft sleeve is slidably connected to the rotating shaft, two threaded rings are threadedly connected to the rotating shaft, one of the threaded rings abuts against the shaft sleeve, a fixing plate is fixedly connected to the pump cover, a sliding sleeve is clamped on the fixing plate, a sliding rod is slidably connected in the sliding sleeve, a spring is fixedly connected between the sliding sleeve and the sliding rod, a connecting plate is fixedly connected to the end of the sliding rod, the connecting plate abuts against the threaded ring close to the shaft sleeve, a pump housing is mounted on the pump cover, and a fixing structure is mounted on the fixing plate; by installing the measuring structure, the tightness of the abutment of the threaded ring against the shaft sleeve can be flexibly adjusted, so that the shaft sleeve can tightly press the impeller, making the rotation of the impeller more stable, thereby making the performance of the centrifugal pump better and the operation more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is Figure 1 the enlarged schematic diagram of part A shown in;

[0018] Figure 3 is a schematic diagram of the connection structure between the spring and the slide of the present utility model;

[0019] Figure 4 Schematic diagram of the connection structure between the pump body and the second flange of the present utility model;

[0020] Figure 5 Schematic diagram of the connection structure between the bottom plate and the first mounting plate of the present utility model.

[0021] In the figure: 1, pump cover; 2, coupling; 3, motor; 4, main body structure; 401, rotating shaft; 402, shaft sleeve; 403, impeller; 404, threaded ring; 405, nut; 406, groove; 5, measuring structure; 501, fixing plate; 502, sliding sleeve; 503, sliding rod; 504, scale bar; 505, pointer; 506, connecting plate; 507, spring; 6, first flange; 7, second flange; 8, pump shell; 9, fixing structure; 901, clamping block; 902, clamping groove; 903, pulling plate; 904, pulling spring; 10, bottom plate; 11, first mounting plate; 12, second mounting plate. Detailed implementation manners

[0022] The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and through specific implementation manners. Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams and not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0023] In the accompanying drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] Please refer to Figures 1-5As shown, a volute pump casting with a narrow flow channel includes a pump cover 1, a main structure 4 is installed on the pump cover 1, and the main structure 4 includes a rotating shaft 401. The pump cover 1 is rotatably connected to the rotating shaft 401, and an impeller 403 is slidably connected to the rotating shaft 401. The side wall of the impeller 403 is in contact with a shaft sleeve 402, and the shaft sleeve 402 is slidably connected to the rotating shaft 401. Two threaded rings 404 are threadedly connected to the rotating shaft 401, and one of the threaded rings 404 is in contact with the shaft sleeve 402. A measuring structure 5 is installed on the pump cover 1, and the measuring structure 5 includes a fixing plate 501. A fixing plate 501 is fixedly connected to the cover 1, a sleeve 502 is engaged on the fixing plate 501, a sliding rod 503 is slidably connected inside the sleeve 502, a spring 507 is fixedly connected between the sleeve 502 and the sliding rod 503, a connecting plate 506 is fixedly connected to the end of the sliding rod 503, the connecting plate 506 and the threaded ring 404 close to the shaft sleeve 402 are in conflict with each other, a pump casing 8 is installed on the pump cover 1, the end of the impeller 403 facing away from the shaft sleeve 402 is in conflict with a nut 405, the nut 405 is threadedly connected to the rotating shaft 401, and a fixing structure 9 is installed on the fixing plate 501.

[0025] As a technical optimization solution of the present utility model, the diameter of the threaded ring 404 is larger than the diameter of the sleeve 402, the connecting plate 506 is perpendicular to the rotating shaft 401, and two grooves 406 are provided on the threaded ring 404; the diameter of the threaded ring 404 is larger than the diameter of the sleeve 402, so that the connecting plate 506 only contacts the threaded ring 404, thereby preventing the connecting plate 506 from interfering with the threaded ring 404 from pressing against the sleeve 402. When rotating the threaded ring 404, if the threaded ring 404 is difficult to rotate, a crowbar can be used to insert the end of the crowbar into the groove 406 on the threaded ring 404, and a hammer can be used to hit the crowbar so that the crowbar drives the threaded ring 404 to rotate, thereby making it more convenient for the operator to operate the threaded ring 404.

[0026] As a technical optimization solution of the utility model, the sliding groove on the fixed plate 501 is a trapezoidal structure, the bottom end of the sliding sleeve 502 is a trapezoidal structure, and the sliding rod 503 is an "L"-shaped structure; since the groove on the fixed plate 501 and the bottom end of the sliding sleeve 502 are both trapezoidal structures, the sliding sleeve 502 will not slip off the top of the fixed plate 501 during quick installation.

[0027] As a technical optimization solution of the utility model, a scale bar 504 is provided on the sliding rod 503, and a pointer 505 is fixedly connected to the sliding sleeve 502, and the pointer 505 and the scale bar 504 are perpendicular to each other; the tightness of the threaded ring 404 against the shaft sleeve 402 can be quickly grasped through the cooperation between the scale bar 504 and the pointer 505.

[0028] As a technical optimization solution of the utility model, a first flange 6 is fixedly connected to the pump cover 1, and a second flange 7 is fixedly connected to the pump casing 8. The first flange 6 and the second flange 7 are fixedly connected by bolts; the arrangement of the two flanges facilitates the connection between the pump cover 1 and the pump casing 8, making the connection between the two more secure.

[0029] As a technical optimization scheme of the present utility model, the fixed structure 9 includes a clamping block 901, the clamping block 901 is slidably connected to the fixed plate 501, a clamping slot 902 is provided on the sliding sleeve 502, the clamping block 901 is engaged in the clamping slot 902, a pull plate 903 is fixedly connected to the end of the clamping block 901, and a tension spring 904 is fixedly connected between the pull plate 903 and the fixed plate 501; when the sliding sleeve 502 slides into the fixed plate 501, it resists the clamping block 901 from sliding to the outside of the fixed plate 501, the clamping block 901 drives the pull plate 903 to move, and the pull plate 903 drives the tension spring 904 to extend, and when the clamping slot 902 on the sliding sleeve 502 is aligned with the clamping block 901, the tension spring 904 is reset, driving the clamping block 901 to engage in the clamping slot 902, so that the sliding sleeve 502 can no longer move, thereby making the installation of the sliding sleeve 502 more convenient and flexible, and the installation is more stable.

[0030] As a technical optimization solution of the utility model, the bottom end of the pump cover 1 is fixedly connected to a first mounting plate 11, the bottom end of the first mounting plate 11 is fixedly connected to a base plate 10, the base plate 10 is fixedly connected to a second mounting plate 12, and the second mounting plate 12 is installed with a motor 3; the first mounting plate 11 is installed at the bottom end of the motor 3, the second mounting plate 12 is installed at the bottom end of the pump cover 1, and then the first mounting plate 11 and the second mounting plate 12 are fixed to the base plate 10 with bolts, so as to quickly fix the entire pump body, making the centrifugal pump more stable during use and avoiding shaking.

[0031] As a technical optimization solution of the utility model, the end of the rotating shaft 401 facing away from the pump housing 8 is fixedly connected with a coupling 2, and the coupling 2 is fixedly connected to the output shaft of the motor 3; the motor 3 is connected to the rotating shaft 401 through the coupling 2, making the connection between the two more stable.

[0032] When the utility model is in use, first, the impeller 403 is sleeved on the rotating shaft 401, and the impeller 403 is pushed towards the pump cover 1 until the impeller 403 abuts against the bushing 402. Then, the nut 405 is threadedly connected to the rotating shaft 401 so that the nut 405 abuts against the impeller 403. Then, the threaded ring 404 close to the bushing 402 is rotated so that the threaded ring 404 moves towards the bushing 402. During the movement of the threaded ring 404, it abuts against the connecting plate 506 and moves, and the connecting plate 506 drives the sliding rod 503 to slide towards the inside of the sliding sleeve 502. During the movement of the sliding rod 503, the spring 507 is driven to contract. Continuously rotate the threaded ring 404, and then control the tightness of the threaded ring 404 according to the position pointed by the pointer 505 on the scale bar 504 so that the threaded ring 404 tightly abuts against the bushing 402. Then rotate the other threaded ring 404 so that the two threaded rings 404 abut against each other, so that the bushing 402 and the nut 405 cooperate to clamp the impeller 403, preventing the impeller 403 from sliding on the rotating shaft 401. By installing the measuring structure 5, the tightness of the threaded ring 404 against the bushing 402 can be flexibly adjusted, so that the bushing 402 can tightly abut against the impeller 403, making the rotation of the impeller 403 more stable, and further improving the performance of the centrifugal pump and making the operation more stable; when rotating the threaded ring 404, if the threaded ring 404 is difficult to rotate, a crowbar can be used. Insert the end of the crowbar into the groove 406 on the threaded ring 404 and use a hammer to strike the crowbar to drive the threaded ring 404 to rotate, making it more convenient for the operator to operate the threaded ring 404; then install the pump casing 8, align the pump casing 8 with the pump cover 1 so that the first flange 6 and the second flange 7 abut against each other, and then use bolts to fix the two flanges, so that the pump casing 8 is installed on the pump cover 1; when installing the measuring structure 5, the sliding sleeve 502 is quickly snapped into the fixing plate 501. Since the notch on the fixing plate 501 and the bottom end of the sliding sleeve 502 are both trapezoidal structures, the sliding sleeve 502 will not slip off from the top end of the fixing plate 501 during rapid installation. When the sliding sleeve 502 slides into the fixing plate 501, it abuts against the block 901 and moves the block 901 towards the outside of the fixing plate 501. The block 901 drives the pull plate 903 to move, and the pull plate 903 drives the tension spring 904 to extend. When the card slot 902 on the sliding sleeve 502 is aligned with the block 901, the tension spring 904 resets and drives the block 901 to snap into the card slot 902, so that the sliding sleeve 502 can no longer move, making the installation of the sliding sleeve 502 more convenient and flexible and more stable; install the first mounting plate 11 at the bottom end of the motor 3 and the second mounting plate 12 at the bottom end of the pump cover 1, and then use bolts to fix the first mounting plate 11 and the second mounting plate 12 on the bottom plate 10, so as to quickly fix the entire pump body and make the centrifugal pump more stable during use, avoiding shaking.

[0033] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

[0034] It should be noted that in this text, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. The volute pump body casting with a narrow flow channel, including a pump cover (1), is characterized in that: The pump cover (1) is provided with a main structure (4), the main structure (4) comprising a rotating shaft (401), the pump cover (1) is rotatably connected with the rotating shaft (401), the rotating shaft (401) is slidably connected with an impeller (403), the side wall of the impeller (403) is in contact with a shaft sleeve (402), the shaft sleeve (402) is slidably connected with the rotating shaft (401), two threaded rings (404) are threadedly connected with the rotating shaft (401), one of the threaded rings (404) is in contact with the shaft sleeve (402), the pump cover (1) is provided with a measuring structure (5), the measuring structure (5) comprises a fixing plate (501), the pump cover (1) is fixedly connected with the fixing plate (501), the A sliding sleeve (502) is engaged with the fixed plate (501), a sliding rod (503) is slidably connected inside the sliding sleeve (502), a spring (507) is fixedly connected between the sliding sleeve (502) and the sliding rod (503), a connecting plate (506) is fixedly connected to the end of the sliding rod (503), the connecting plate (506) and the threaded ring (404) close to the shaft sleeve (402) are in conflict with each other, a pump housing (8) is installed on the pump cover (1), and a fixing structure (9) is installed on the fixed plate (501); a scale bar (504) is provided on the sliding rod (503), a pointer (505) is fixedly connected to the sliding sleeve (502), and the pointer (505) and the scale bar (504) are perpendicular to each other.

2. The volute pump body casting with a narrow flow channel according to claim 1, characterized in that: The diameter of the threaded ring (404) is greater than the diameter of the shaft sleeve (402), the connecting plate (506) and the rotating shaft (401) are perpendicular to each other, and two grooves (406) are formed on the threaded ring (404).

3. The volute pump body casting with a narrow flow channel according to claim 1, characterized in that: One end of the impeller (403) that is away from the shaft sleeve (402) abuts against a nut (405), and the nut (405) is threadedly connected to the rotating shaft (401).

4. The volute pump body casting with a narrow flow channel according to claim 1, characterized in that: The sliding groove on the fixed plate (501) is in a trapezoidal structure, the bottom end of the sliding sleeve (502) is in a trapezoidal structure, and the sliding rod (503) is in an "L"-shaped structure.

5. The volute pump body casting with a narrow flow channel according to claim 1, characterized in that: A first flange (6) is fixedly connected to the pump cover (1), and a second flange (7) is fixedly connected to the pump housing (8); the first flange (6) and the second flange (7) are fixedly connected by bolts.

6. The volute pump body casting with a narrow flow channel according to claim 1, characterized in that: The fixing structure (9) comprises a clamping block (901), the fixing plate (501) is slidably connected with the clamping block (901), the sliding sleeve (502) is provided with a clamping groove (902), and the clamping block (901) is clamped in the clamping groove (902).

7. The volute pump body casting with a narrow flow channel according to claim 6, characterized in that: A pulling plate (903) is fixedly connected to the end of the clamping block (901), and a tension spring (904) is fixedly connected between the pulling plate (903) and the fixed plate (501).

8. The volute pump body casting with a narrow flow channel according to claim 1, characterized in that: The bottom end of the pump cover (1) is fixedly connected to a first mounting plate (11), the bottom end of the first mounting plate (11) is fixedly connected to a base plate (10), the base plate (10) is fixedly connected to a second mounting plate (12), and the second mounting plate (12) is mounted with a motor (3).

9. The volute pump body casting with a narrow flow channel according to claim 8, characterized in that: One end of the rotating shaft (401) facing away from the pump housing (8) is fixedly connected to a coupling (2), and the coupling (2) is fixedly connected to the output shaft of the motor (3).

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