Pump head of a cutting-type guided sewage pump

Abstract

The present invention discloses a pump head of a cutting-type guide sewage pump, which can prevent sewage from clogging the pump head and improve the head at the same time. The key points of its technical solution are that it includes a pump chamber, a sewage flow channel and a discharge port. The pump chamber, the sewage flow channel and the discharge port are connected in sequence. One side of the sewage flow channel is tangentially connected to the pump chamber, and an arc-shaped transition section is provided between the other side of the sewage flow channel and the pump chamber. A guide dispersion block is provided on the arc-shaped transition section, and a guide flow channel and a dispersion flow channel are formed between the guide dispersion block and the cavity wall of the pump chamber. The present invention is applicable to the technical field of sewage pumps.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage pumps, and in particular relates to a pump head of a cutting-type guide sewage pump. Background Art

[0002] Cutting guide sewage pumps are mainly used in sewage treatment to transport sewage and waste. The pump head of a traditional sewage pump has an unreasonable structure between the pump chamber and the sewage flow channel and is prone to clogging. Although the open pump head is not easy to clog, it has a low head, so it needs to be improved. Summary of the invention

[0003] The object of the present invention is to provide a pump head of a cutting-type guided sewage pump, which can prevent dirt from clogging the pump head and improve the head at the same time.

[0004] The object of the present invention is achieved in this way: a pump head of a cutting-type guide sewage pump includes a pump chamber, a sewage flow channel and a discharge port, the pump chamber, the sewage flow channel and the discharge port are connected in sequence, one side of the sewage flow channel is tangentially connected to the pump chamber, and an arc-shaped transition section is provided between the other side of the sewage flow channel and the pump chamber, characterized in that a guide dispersion block is provided on the arc-shaped transition section, and a guide flow channel and a dispersion flow channel are formed between the guide dispersion block and the cavity wall of the pump chamber.

[0005] The present invention is further configured as follows: a groove-shaped flow channel is further provided on the inner wall of the pump chamber, and the groove-shaped flow channel is located in the dispersion flow channel.

[0006] The present invention is further configured such that: an arc-shaped matching surface is provided on one side of the guide and dispersion block facing the center of the pump chamber.

[0007] The present invention is further configured such that the height of the guide and dispersion block gradually decreases from an end connected to the arc-shaped transition section to an end not connected to the arc-shaped transition section.

[0008] The present invention is further configured such that the thickness of the guide dispersion block gradually decreases from the end connected to the arc-shaped transition section to the end not connected to the arc-shaped transition section.

[0009] By adopting the above technical solution, when sewage and dirt enter the sewage discharge channel from the pump cavity, the guide dispersion block and the grooved channel cooperate with each other, so that the dirt can be guided back and forth and smoothly enter the sewage discharge channel, thereby preventing the pump body from being blocked and increasing the head. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0011] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0012] Figure 3 The present invention Figure 2 AA structural diagram;

[0013] The reference numerals in the figure are: 1, pump chamber; 2, sewage flow channel; 3, discharge port; 4, guide dispersion block; 5, guide flow channel; 6, dispersion flow channel; 7, groove flow channel; 8, arc-shaped mating surface. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-3 :

[0015] A pump head of a cutting-type guide sewage pump comprises a pump chamber 1, a sewage flow channel 2 and a discharge port 3, wherein the pump chamber 1, the sewage flow channel 2 and the discharge port 3 are connected in sequence, one side of the sewage flow channel 2 is tangentially connected to the pump chamber 1, and an arcuate transition section is provided between the other side of the sewage flow channel 2 and the pump chamber 1, and the characteristic is that a guide dispersion block 4 is provided on the arcuate transition section, and a guide flow channel 5 and a dispersion flow channel 6 are formed between the guide dispersion block 4 and the cavity wall of the pump chamber 1.

[0016] The guide channel 5 is directly connected to the sewage channel 2, and is used to quickly guide the sewage and dirt in the pump chamber 1 into the sewage channel 2; the dispersion channel 6 can be a single channel, located on the upper or lower side of the guide dispersion block 4, or there can be two dispersion channels 6, respectively located on the upper and lower sides of the guide dispersion block 4; if there is too much dirt in the sewage, it flows through the guide dispersion block 4, and most of the sewage and dirt are quickly guided into the sewage channel 2, which can increase the head, and a small part of the sewage and dirt is dispersed into the dispersion channel 6, so that it re-enters the pump chamber 1 for circulation, avoiding the sewage and dirt from causing blockage at the connection between the sewage channel 2 and the pump chamber 1.

[0017] A grooved flow channel 7 is also provided on the inner wall of the pump chamber 1. The grooved flow channel 7 is located in the dispersion flow channel 6 and is connected to the sewage flow channel 2. The dirt entering the dispersion flow channel 6 can re-enter the sewage flow channel 2 through the grooved flow channel 7 to ensure the discharge of sewage and dirt.

[0018] The guide and dispersion block 4 is provided with an arc-shaped mating surface 8 on one side facing the center of the pump chamber 1. After the impeller is installed, the arc-shaped mating surface 8 is matched with the impeller clearance, that is, the end of the guide and dispersion block 4 is close to the impeller, and the sewage and dirt thrown out of the impeller directly impact the end of the guide and dispersion block 4, playing a role of dispersion and guidance.

[0019] The height of the guiding and dispersing block 4 gradually decreases from the end connected to the arcuate transition section to the end not connected to the arcuate transition section, so that the upper surface or the lower surface of the guiding and dispersing block 4 is an inclined structure, and the guiding and dispersing effect is better.

[0020] The thickness of the guiding and dispersing block 4 gradually decreases from the end connected to the arc-shaped transition section to the end not connected to the arc-shaped transition section, that is, the end thickness of the guiding and dispersing block 4 is smaller, and the upper surface or lower surface of the guiding and dispersing block is an inclined surface, which makes it easier to disperse sewage and dirt.

[0021] The specific principle is: when the liquid and debris in the sewage and dirt are mixed and enter the pump chamber 1, under the action of the guide dispersion block 4, part of the debris will be separated from the liquid along the inclined surface of the guide dispersion block 4, and the liquid will be discharged along the guide channel 5 and the sewage channel 2, while the debris separated along the inclined surface will be dispersed through the channel 6 and re-enter the sewage channel 2 along the groove channel 7. The dispersion and guidance method can effectively prevent the sewage and dirt from being directly blocked at the connecting end of the sewage channel and the pump chamber. At the same time, the end of the guide dispersion block 4 away from the arc transition section is a sharp-angle structure, which can reduce the head loss of the liquid in the pump chamber. Therefore, the design of the guide dispersion block 4 inherits the high efficiency of the traditional pump head and solves the problem of easy blockage of the traditional pump head.

[0022] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pump head of a cutting-type guide sewage pump, comprising a pump chamber (1), a sewage flow channel (2) and a discharge port (3), wherein the pump chamber (1), the sewage flow channel (2) and the discharge port (3) are connected in sequence, one side of the sewage flow channel (2) is tangentially connected to the pump chamber (1), and an arc-shaped transition section is provided between the other side of the sewage flow channel (2) and the pump chamber (1), characterized in that: A guide and dispersion block (4) is provided on the arc-shaped transition section, and a guide flow channel (5) and a dispersion flow channel (6) are formed between the guide and dispersion block (4) and the cavity wall of the pump cavity (1); The inner wall of the pump chamber (1) is also provided with a groove-shaped flow channel (7), and the groove-shaped flow channel (7) is located in the dispersion flow channel (6); The guide and dispersion block (4) is provided with an arc-shaped matching surface (8) on one side facing the center of the pump chamber (1); The height of the guide and dispersion block (4) gradually decreases from the end connected to the arc-shaped transition section to the end not connected to the arc-shaped transition section; The thickness of the guide and dispersion block (4) gradually decreases from an end connected to the arc-shaped transition section to an end not connected to the arc-shaped transition section.

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