Sealing cavity structure of delivery pump

Abstract

The utility model discloses a sealing cavity structure of a delivery pump. The sealing cavity structure comprises an upper cavity, a lower cavity and an annular lug, the utility model relates to the technical field of delivery pump sealing, the cavity structure ingeniously utilizes the primary buffer gasket ring and the secondary buffer gasket ring, effectively obstructs and buffers suspended particles in a liquid medium in the delivery pump, plays a key protection role, and simultaneously, a plurality of medium guide threads are arranged in the lower cavity, so that the delivery pump can be effectively prevented from being blocked and buffered by the primary buffer gasket ring and the secondary buffer gasket ring. The liquid medium can be guided to form an efficient eddy current effect, and the design not only ensures that particles are stably suspended in an eddy current central area, but also ingeniously promotes the particles to be far away from the wall surface of the cavity, so that the service life of the inner cavity of the delivery pump is greatly prolonged, and excellent performance optimization and innovative design thinking are shown.

Description

Technical Field

[0001] The utility model relates to the technical field of delivery pump sealing, in particular to a delivery pump sealing cavity structure. Background Art

[0002] In current slurry conveying pump designs, the internal structure of the primary sealing cavity is mostly a standard cylindrical shape. While the sealing impeller performs its work, the medium is ejected by the impeller at high pressure and directly impacts the inner wall of the sealing cavity. If the conveyed medium contains solid particles, after long-term continuous operation, these particles will cause significant wear on the inner wall of the sealing cavity due to continuous friction. This wear phenomenon not only gradually weakens the sealing efficiency of the pump body but also inevitably increases the operating costs and maintenance burden of the enterprise. For example, "Compared with the traditional structure, the sealing cavity structure of the utility model CN216922609U conveying pump has the following beneficial effects: simple structure, reasonable design, an annular groove buffer structure, liquid forms a protective film on the inner wall of the sealing cavity, reducing particle wear on the side wall; through holes are provided in the annular groove, leaked liquid circulates between the inner and outer cavities, balancing the liquid pressure, improving the sealing performance of the pump body, and reducing the production costs of the enterprise." For the above problems, there may already be technical means to solve them in the existing technology, but this case aims to provide an alternative or replacement technical solution. Utility Model Content

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sealed cavity structure of a delivery pump, comprising: an upper cavity, a lower cavity and an annular ear, wherein the annular ear is mounted on the upper cavity, a drainage assembly is mounted on the lower cavity, and a drainage buffer assembly is mounted in the upper cavity;

[0004] The drainage and buffering assembly includes: a water hole, a primary water inlet cavity, a secondary water inlet cavity, a primary buffering gasket ring and a secondary buffering gasket ring;

[0005] The annular ear is provided with the water hole, the water hole is connected to the primary water inlet cavity, the upper cavity is provided with the primary water inlet cavity, the primary water inlet cavity is connected to the secondary water inlet cavity, the upper cavity is provided with the secondary water inlet cavity, the primary buffer gasket is installed in the secondary water inlet cavity, and the secondary buffer gasket is installed in the secondary water inlet cavity;

[0006] It should be noted that, in the above description, the liquid flows from the water hole opened on the annular ear into the primary water inlet chamber in the upper cavity, and is blocked and weakened by the primary buffer ring and the secondary buffer ring provided in the secondary water inlet chamber, so that the solid particles in the medium first impact the primary buffer ring and the secondary buffer ring, thereby reducing the wear on the upper cavity and the lower cavity, and finally flows into the lower cavity;

[0007] The drainage assembly includes: a rubber coupling sealing ring, a plurality of water escape and return channels, a tapered cavity, and a plurality of medium guiding threads;

[0008] The rubber coupling sealing ring is installed on the lower cavity, and the lower cavity is respectively provided with a plurality of the water escape and return channels. The lower cavity is provided with the tapered cavity, and the tapered cavity is respectively provided with a plurality of the medium guide threads;

[0009] It should be noted that, in the above, when the medium enters through the lower cavity, the overflowed excess liquid medium will flow into the lower cavity through the water return channel, and the rubber coupling sealing ring will make the upper cavity and the lower cavity fit more tightly, and the liquid medium and particles will flow backward through the conical cavity in the lower cavity. In this process, multiple medium guide threads will cause the liquid to form a vortex, so that the particles in the medium will be concentrated in the middle of the pipe due to the action of the vortex, thereby further avoiding the friction between the particles in the liquid medium and the pipe wall, and further extending the service life of the cavity in the delivery pump.

[0010] Preferably, a silicone wear-resistant coating is provided in the secondary water inlet cavity;

[0011] Preferably, the primary buffer ring is provided with an epoxy wear-resistant coating;

[0012] Preferably, a pump body positioning key is provided on the annular ear;

[0013] Preferably, a fluorocarbon wear-resistant coating is provided on the medium guide thread. Beneficial effects

[0014] The present invention provides a sealing cavity structure for a delivery pump. Compared with the prior art, the sealing cavity structure of the delivery pump has the following beneficial effects: the cavity structure cleverly utilizes a primary buffer ring and a secondary buffer ring to effectively block and buffer particles suspended in the liquid medium inside the delivery pump, playing a key protective role. At the same time, multiple medium guide threads arranged in the lower cavity can guide the liquid medium to form an efficient vortex effect. This design not only ensures that the particles are stably suspended in the center area of the vortex, but also cleverly drives them away from the cavity wall, thereby greatly extending the service life of the cavity inside the delivery pump, demonstrating excellent performance optimization and innovative design thinking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of the sealing cavity structure of the delivery pump of the present invention.

[0016] Figure 2 This is a side structural schematic diagram of the sealing cavity structure of the delivery pump described in the present invention.

[0017] Figure 3 for Figure 1 A partial enlarged schematic diagram of "A".

[0018] In the figure: 1. Upper cavity; 2. Lower cavity; 3. Annular ear; 4. Water hole; 5. Primary water inlet cavity; 6. Secondary water inlet cavity; 7. Primary buffer gasket; 8. Secondary buffer gasket; 9. Rubber coupling sealing ring; 10. Water escape and return channel; 11. Conical cavity; 12. Medium guide thread. DETAILED DESCRIPTION

[0019] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0020] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control. Example

[0021] The present invention will be described in detail below with reference to the accompanying drawings. Figure 1-3 As shown, the sealed cavity structure of the delivery pump includes: an upper cavity 1, a lower cavity 2 and an annular ear 3, the annular ear 3 is installed on the upper cavity 1, the lower cavity 2 is installed with a drainage component, and the upper cavity 1 is installed with a drainage buffer component; the drainage buffer component includes: a water hole 4, a primary water inlet cavity 5, a secondary water inlet cavity 6, a primary buffer gasket 7 and a secondary buffer gasket 8; the annular ear 3 is provided with the water hole 4, the water hole 4 is connected to the primary water inlet cavity 5, the upper cavity 1 is provided with the primary water inlet cavity 5, and the primary water inlet cavity 5 is connected to the secondary water inlet cavity 6 The secondary water inlet chamber 6 is opened in the upper chamber 1, the primary buffer gasket 7 is installed in the secondary water inlet chamber 6, and the secondary buffer gasket 8 is installed in the secondary water inlet chamber 6; the drainage assembly includes: a rubber coupling sealing ring 9, a plurality of water escape and return channels 10, a tapered cavity 11 and a plurality of medium guide threads 12; the rubber coupling sealing ring 9 is installed on the lower chamber 2, and the lower chamber 2 is respectively opened with a plurality of the water escape and return channels 10, the lower chamber 2 is opened with the tapered cavity 11, and the tapered cavity 11 is respectively opened with a plurality of the medium guide threads 12.

[0022] According to the attached Figure 1-3It is concluded that the liquid flows from the water hole 4 opened on the annular ear 3 into the primary water inlet chamber 5 in the upper cavity 1, and is blocked and weakened by the primary buffer gasket ring 7 and the secondary buffer gasket ring 8 set in the secondary water inlet chamber 6, so that the solid particles in the medium preferentially impact the primary buffer gasket ring 7 and the secondary buffer gasket ring 8, reducing the wear on the upper cavity 1 and the lower cavity 2, and finally flows into the lower cavity 2; when the medium enters through the lower cavity 2, the excess liquid medium overflows and flows into the lower cavity 2 through the escape water return channel 10, and the rubber coupling sealing ring 9 makes the upper cavity 1 and the lower cavity 2 fit more tightly, and the liquid medium and particles flow backward through the tapered cavity 11 in the lower cavity 2, and in this process, multiple medium guide threads 12 will cause the liquid to form a vortex, so that the particles in the medium will be concentrated in the middle of the pipe due to the action of the vortex, thereby further avoiding the friction between the particles in the liquid medium and the pipe wall, so that the service life of the cavity in the delivery pump is further extended.

[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The sealing cavity structure of the delivery pump includes: An upper cavity (1), a lower cavity (2) and an annular ear (3), characterized in that the annular ear (3) is mounted on the upper cavity (1), a drainage assembly is mounted on the lower cavity (2), and a drainage buffer assembly is mounted in the upper cavity (1); The drainage and buffering assembly comprises: a water hole (4), a primary water inlet cavity (5), a secondary water inlet cavity (6), a primary buffering gasket ring (7), and a secondary buffering gasket ring (8); The annular ear (3) is provided with the water hole (4), the water hole (4) is connected to the primary water inlet chamber (5), the upper chamber (1) is provided with the primary water inlet chamber (5), the primary water inlet chamber (5) is connected to the secondary water inlet chamber (6), the upper chamber (1) is provided with the secondary water inlet chamber (6), the primary buffer ring (7) is installed in the secondary water inlet chamber (6), and the secondary buffer ring (8) is installed in the secondary water inlet chamber (6); The drainage assembly comprises: a rubber coupling sealing ring (9), a plurality of water escape and return channels (10), a tapered cavity (11), and a plurality of medium guide threads (12); The rubber coupling sealing ring (9) is mounted on the lower cavity (2), and the lower cavity (2) is provided with a plurality of the water escape and return channels (10). The lower cavity (2) is provided with the tapered cavity (11), and the tapered cavity (11) is provided with a plurality of the medium guide threads (12).

2. The sealing cavity structure of the delivery pump according to claim 1, characterized in that: A silicone wear-resistant coating is provided in the secondary water inlet cavity (6).

3. The sealing cavity structure of the delivery pump according to claim 2, characterized in that: The primary buffer ring (7) is provided with an epoxy wear-resistant coating.

4. The sealing cavity structure of the delivery pump according to claim 3, characterized in that: A pump body positioning key is provided on the annular ear (3).

5. The sealing cavity structure of the delivery pump according to claim 4, characterized in that: The medium guide thread (12) is provided with a fluorocarbon wear-resistant coating.

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