Centrifugal grinding pump

Abstract

The utility model discloses a centrifugal grinding pump, which relates to the technical field of pump bodies, and comprises a pump body with an inlet and an outlet, a cutting device and a grinding device which are arranged in the pump body, and a built-in channel which is arranged in the pump body and is used for transitionally conveying liquid at the inlet to the cutting device, the pump body is provided with an adjusting assembly, and the adjusting assembly is used for adjusting the size of the built-in channel. Through the arrangement of the built-in channel, the size of the built-in channel is adjustable, and the amount of liquid conveyed to the cutting device in unit time can be controlled, so that the size of the built-in channel can be selected according to the type of the liquid when the pump body conveys the corresponding type of liquid; and the cutting device can fully and completely cut impurities in the liquid, and the cutting effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of pump bodies, in particular to a centrifugal grinding pump. Background Art

[0002] When using a centrifugal pump to transport sewage or wastewater, there are many impurities in the sewage or wastewater, which may cause problems such as slow transportation or blockage. These impurities include fiber materials, rags, cloth, textiles, plastic bags or other solid components, which may easily get stuck in the area inside the pump, which may cause the pump efficiency, especially the hydraulic efficiency, to decrease until the pump impeller is completely blocked.

[0003] The current solution to this problem is to design a centrifugal grinding pump, which is provided with a rotating pulverizing assembly, also called a grinder, at the pump inlet for grinding the components in the medium. Typically, the pulverizing assembly is configured with a cutting device that rotates in or at the pump inlet for breaking up or pulverizing the solid components in the medium. For example, a patent document with authorization announcement number CN202155217U discloses a grinding pump, which includes a machine base, a pump cover, a stator assembly, a rotor assembly, a main shaft, and a sleeve. The machine base is provided with a working cavity for installing and accommodating the stator assembly and the rotor assembly, the stator assembly is installed on the pump cover, the rotor assembly is arranged on the main shaft at one end of the working cavity, the sleeve is sleeved on the main shaft, the machine base is provided with a gap adjustment mechanism, the gap adjustment mechanism includes a housing, a ball screw, a nut, a bearing seat, a nut seat, and a servo motor, the housing is fixed on the outer wall of the machine base, one end of the ball screw is connected to the output shaft of the servo motor, and the other end is installed on the bearing seat, the bearing seat is installed inside the housing, the nut is screwed on the ball screw, one end of the nut seat is fixed to the nut, and the other end is fixed to the sleeve.

[0004] However, in the prior art, the grinding pump generally uses a cutting device to cut and crush the impurities entering from the pump inlet, and then uses a grinder to grind the cut impurities, and finally discharges them through the pump outlet. In this process, since the aperture size at the pump inlet is constant, the amount of liquid that can pass through per unit time is constant. When the liquid contains more impurities, the amount of impurities transported to the cutting device per unit time is more, and the cutting device cannot fully and completely cut the impurities, resulting in a poor cutting effect.

[0005] Therefore, we propose a centrifugal grinding pump to solve the problems in the prior art. Utility Model Content

[0006] The purpose of the present utility model is to propose a centrifugal grinding pump to solve the problems in the prior art. Through the setting of the adjusting component, the amount of liquid flowing into the pump body per unit time can be controlled, so that the cutting device inside the pump body can act on the corresponding amount of liquid, thereby realizing the full and complete cutting treatment of impurities in the liquid.

[0007] To solve the above problems, the present utility model provides the following technical solutions:

[0008] A centrifugal grinding pump includes a pump body having an inlet and an outlet, a cutting device and a grinding device disposed inside the pump body, and also includes a built-in channel disposed inside the pump body and used for transporting the liquid at the inlet to the cutting device in a transitional manner. An adjusting component is provided on the pump body, and the adjusting component is used to adjust the size of the built-in channel.

[0009] As a further solution of the present utility model: Two baffles with adjustable spacing are arranged along the depth direction of the pump body inside the pump body, and the two baffles are arranged oppositely and form a shape like an eight-character with the spacing gradually decreasing from the outside to the inside. The area between the two baffles constitutes the built-in channel.

[0010] As a further solution of the present utility model: One end of the baffle close to the inlet is hinged to the inner wall of the pump body, and the rotation axis of the baffle is perpendicular to the axis of the inlet. The adjusting component includes an adjusting rod movably and sealingly arranged on the pump body, and one end of the adjusting rod extends into the pump body and is movably connected to the baffle.

[0011] As a further solution of the present utility model: A scale mark is arranged along the length direction at one end of the adjusting rod located outside the pump body.

[0012] As a further solution of the present utility model: A chute is opened along the length direction of the baffle, and a slider is slidably installed on the chute. One end of the adjusting rod located inside the pump body is hinged to the slider.

[0013] As a further solution of the present utility model: The cutting device includes stator sheets fixedly arranged on the inner wall of the pump body. An impeller is coaxially arranged on the driving shaft inside the pump body, and the stator sheets are in close contact with the blades of the impeller.

[0014] As a further solution of the present utility model: The grinding device includes a plurality of fixed teeth arranged inside the pump body, and the plurality of fixed teeth are circumferentially arrayed with the driving shaft as the center. A follower plate is fixedly sleeved on the driving shaft of the pump body. A plurality of moving teeth are fixedly arranged on the side of the follower plate facing the fixed teeth, and the plurality of moving teeth are circumferentially arrayed with the driving shaft as the center. The moving grinding ring surface formed by the plurality of moving teeth is in contact and cooperation with the static grinding ring surface formed by the plurality of fixed teeth.

[0015] As a further solution of the present utility model: The adjusting rod is movably and hermetically connected to the pump body through a sealing ring.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] 1. Through the setting of the built-in channel, the size of the built-in channel is adjustable, and the amount of liquid delivered to the cutting device per unit time can be controlled. When the pump body conveys a corresponding type of liquid, the size of the built-in channel can be selected according to the type of liquid, which facilitates the cutting device to fully cut the impurities in the liquid, and the cutting effect is good;

[0018] 2. By setting that the built-in channel is composed of two baffle plates, the position of the baffle plates can be adjusted and changed by the adjusting rod, and the adjustment is convenient. At the same time, scale marks are provided on the adjusting rod, and the staff can visually know the size of the built-in channel by using the scale marks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model with reference to the accompanying drawings.

[0020] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0021] Figure 2 is Figure 1 an enlarged structure diagram of part A in

[0022] Figure 3 is Figure 1 a partial cross-sectional structure diagram in

[0023] In the figure: 1. Pump body; 101. Inlet; 102. Outlet; 2. Baffle plate; 3. Adjusting rod; 4. Scale mark; 5. Chute; 6. Slide block; 7. Stator sheet; 8. Driving shaft; 9. Impeller; 10. Fixed tooth; 11. Follow-up plate; 12. Moving tooth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Such as Figures 1 - 3As shown in the figure, a centrifugal grinding pump includes a pump body 1. An inlet 101 and an outlet 102 are respectively arranged on the left side and the top of the pump body 1. A cutting device and a grinding device are arranged inside the pump body 1. The cutting device and the grinding device are respectively used for cutting and grinding impurities in the liquid so that the liquid can be smoothly transported. At the same time, an internal channel is arranged inside the pump body 1. The internal channel is used for transporting the liquid at the inlet 101 to the cutting device in a transitional manner. And an adjusting component is arranged on the pump body 1. The adjusting component is used for adjusting the size of the internal channel so that during the transportation of different types of liquids, the size of the internal channel can be adjusted according to the type of the liquid, and further the amount of liquid transported from the internal channel to the cutting device per unit time can be adjusted, and the cutting device can perform sufficient cutting treatment on the impurities in the liquid.

[0026] As Figure 1 shown, for the design of the internal channel mentioned above, two baffles 2 with adjustable spacing can be arranged inside the pump body 1 along its depth direction. And the two baffles 2 are arranged oppositely and form a shape like an inverted V with the spacing gradually decreasing from the outside to the inside. The area between the two baffles 2 constitutes the internal channel. The openings of the two baffles 2 arranged in an inverted V shape can be enlarged or reduced according to the type of the liquid so that the liquid can be controllably transported to the cutting device. Further, one end of the baffle 2 close to the inlet 101 is hinged on the inner wall of the pump body 1, and the rotation axis of the baffle 2 is perpendicular to the axis of the inlet 101.

[0027] For the setting of the adjusting component mentioned above, the adjusting component includes an adjusting rod 3 movably and sealingly arranged on the pump body 1. And one end of the adjusting rod 3 extends into the pump body 1 and is movably connected with the baffle 2. Specifically, the adjusting rod 3 is movably and sealingly connected with the pump body 1 through a sealing ring. Figure 1 In the

[0028] As Figure 2 shown, in order to realize the adjustment of the baffle 2 by the adjusting rod 3, a sliding groove 5 can be opened along the length direction of the baffle 2, and a sliding block 6 is slidably installed on the sliding groove 5. One end of the adjusting rod 3 located inside the pump body 1 is hinged with the sliding block 6. When the adjusting rod 3 is driven to rotate, the vertical movement of the adjusting rod 3 can drive the sliding block 6 and the baffle 2 to rotate. At the same time, the sliding block 6 will also move in the sliding groove 5.

[0029] Further, in order to visually know the size of the built-in channel, a scale mark 4 can be provided along the length direction at one end of the adjusting rod 3 outside the pump body 1. After the adjusting rod 3 is driven to rotate to the corresponding position, the staff can see the position of the baffle 2 through the scale mark 4 exposed outside the pump body 1 on the adjusting rod 3, and thus can know the size of the built-in channel.

[0030] As Figure 1 and Figure 3 shown, for the above settings of the cutting device and the grinding device, the following can be set:

[0031] (1) Cutting device: The cutting device includes a stator piece 7 fixedly arranged on the inner wall of the pump body 1. An impeller 9 is coaxially arranged on the driving shaft 8 inside the pump body 1, and the stator piece 7 is in close contact with the blades of the impeller 9.

[0032] (2) Grinding device: The grinding device includes a plurality of fixed teeth 10 arranged inside the pump body 1, and the plurality of fixed teeth 10 are circumferentially arrayed with the driving shaft 8 as the center. A follower plate 11 is fixedly sleeved on the driving shaft 8 of the pump body 1. A plurality of moving teeth 12 are fixedly arranged on one side of the follower plate 11 facing the fixed teeth 10, and the plurality of moving teeth 12 are circumferentially arrayed with the driving shaft 8 as the center. The moving grinding ring surface formed by the plurality of moving teeth 12 is in contact and cooperation with the static grinding ring surface formed by the plurality of fixed teeth 10.

[0033] It should be noted that the settings of the cutting device and the grinding device described above are not limited to the designs described in this article. Further, the cutting device and the grinding device can also be set as conventional technical means in the prior art, as long as their corresponding cutting functions and grinding functions are achieved.

[0034] The above has described a detailed description of an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equal changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A centrifugal grinding pump, characterized in that: The invention comprises a pump body (1) having an inlet (101) and an outlet (102), and a cutting device and a grinding device arranged inside the pump body (1), and also comprises a built-in channel arranged inside the pump body (1) and used for transferring liquid at the inlet (101) to the cutting device, wherein the pump body (1) is provided with an adjustment component, and the adjustment component is used for adjusting the size of the built-in channel.

2. A centrifugal grinding pump according to claim 1, characterized in that: Two baffles (2) with adjustable spacing are arranged inside the pump body (1) along its depth direction, and the two baffles (2) are arranged opposite to each other and form an eight-shaped shape with the spacing gradually decreasing from the outside to the inside, and the area between the two baffles (2) constitutes the built-in channel.

3. A centrifugal grinding pump according to claim 2, characterized in that: One end of the baffle (2) close to the inlet (101) is hingedly arranged on the inner wall of the pump body (1), and the rotation axis of the baffle (2) is perpendicular to the axis of the inlet (101). The adjustment component includes an adjustment rod (3) movably sealed and arranged on the pump body (1), and one end of the adjustment rod (3) extends into the interior of the pump body (1) and is movably connected to the baffle (2).

4. A centrifugal grinding pump according to claim 3, characterized in that: One end of the regulating rod (3) located outside the pump body (1) is provided with a scale mark (4) along its length direction.

5. A centrifugal grinding pump according to claim 4, characterized in that: The baffle (2) is provided with a slide groove (5) along its length direction, and a slider (6) is slidably mounted on the slide groove (5); one end of the adjustment rod (3) located inside the pump body (1) is hinged to the slider (6).

6. A centrifugal grinding pump according to any one of claims 1 to 5, characterized in that: The cutting device comprises a stator sheet (7) fixedly arranged on the inner wall of a pump body (1); an impeller (9) is coaxially arranged on a driving shaft (8) inside the pump body (1); and the stator sheet (7) is in close contact with the blades of the impeller (9).

7. A centrifugal grinding pump according to claim 6, characterized in that: The grinding device comprises a plurality of fixed teeth (10) arranged inside a pump body (1), and the plurality of fixed teeth (10) are arranged in a circumferential array with a drive shaft (8) as the center of a circle; a follower plate (11) is fixedly sleeved on the drive shaft (8) of the pump body (1); a plurality of movable teeth (12) are fixedly arranged on a side of the follower plate (11) facing the fixed teeth (10), and the plurality of movable teeth (12) are arranged in a circumferential array with the drive shaft (8) as the center of a circle; a movable grinding annular surface formed by the plurality of movable teeth (12) contacts and cooperates with a static grinding annular surface formed by the plurality of fixed teeth (10).

8. A centrifugal grinding pump according to any one of claims 3 to 5, characterized in that: The regulating rod (3) is movably sealed and matched with the pump body (1) via a sealing ring.

Images