Pump head structure of ore pulp pump

Abstract

A pump head structure of an ore pulp pump comprises a pump head body, a liquid suction valve and a liquid drainage valve, the liquid suction valve and the liquid drainage valve are installed on a liquid suction opening and a liquid drainage opening in the pump head body respectively, the liquid suction valve and the liquid drainage valve are of the same structure and are each composed of a valve seat and a valve element, an annular groove is formed in the periphery of each valve seat, and a plurality of liquid spraying holes are evenly distributed in the radial direction. The inner end of the liquid spraying hole is communicated with the sealing surface of the valve seat, and the outer end is communicated with the annular groove; a first through hole and a second through hole are formed in the pump head body, the first through hole is located in one side of a liquid suction port in the lower portion of the pump head body, the inner end of the first through hole is communicated with an annular groove in a valve seat of a liquid suction valve, and the second through hole is located in one side of a liquid discharge port in the upper portion of the pump head body. The inner end of the second through hole communicates with an annular groove in a valve seat of the drain valve, and the outer end of the first through hole and the outer end of the second through hole are both connected with a high-pressure water source. According to the utility model, the defects in the prior art are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry pumps, in particular to a pump head structure of a slurry pump. Background Art

[0002] Slurry pumps are used to transport tailings from gold, lead, zinc, iron and other mines. They transport liquids containing various tailings and carry wood slag (sawdust), leaves and other debris. Figure 4 ) During operation, after the valve core and the valve seat are opened, the above-mentioned debris is easy to adhere to the sealing surface of the valve core and the valve seat. When the valve core and the valve seat are closed, the sealing surface is easy to be separated by the debris attached thereon, causing the valve core and the valve seat to be unable to be completely closed, so that the slurry pump cannot work normally, frequent maintenance is required, the labor intensity is high, and the work efficiency is low. Utility Model Content

[0003] The utility model provides a pump head structure of a slurry pump to overcome the shortcomings of the prior art.

[0004] The technical scheme adopted by the utility model is: a pump head structure of a slurry pump, comprising a pump head body, a suction valve, and a discharge valve, wherein the suction valve and the discharge valve are respectively mounted on the suction port and the discharge port in the pump head body, the suction valve and the discharge valve have the same structure and are both composed of a valve seat and a valve core, an annular groove is arranged on the outer periphery of the valve seat, a plurality of spray holes are evenly distributed radially, and the inner ends of the spray holes are connected with the sealing surface of the valve seat, and the outer ends are connected with the annular groove; a first through hole and a second through hole are arranged on the pump head body, the first through hole is located at one side of the suction port at the lower part of the pump head body, the inner end of the first through hole is connected with the annular groove on the valve seat of the suction valve, the second through hole is located at one side of the discharge port at the upper part of the pump head body, the inner end of the second through hole is connected with the annular groove on the valve seat of the discharge valve, and the outer ends of the first through hole and the second through hole are both connected with a high-pressure water source.

[0005] Four liquid spray holes are provided, and the diameter of the liquid spray holes is 3-5 mm.

[0006] The diameters of the first through hole and the second through hole are both 8-12 mm.

[0007] One-way valves are provided at the outer ends of the first through hole and the second through hole, and the one-way valves are respectively connected to high-pressure water sources.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The utility model forms a high-pressure water channel by arranging a water spray structure on the existing valve seat and the pump head body. When the slurry pump is working, the high-pressure water enters the pump head body to wash away the debris attached to the valve seat and the valve core sealing surface, ensuring that the valve core and the valve seat are completely closed, overcoming the problem that the valve seat and the valve core sealing surface cannot be completely closed due to the clamping of debris, reducing the maintenance frequency, reducing the labor intensity, improving the working efficiency of the slurry pump, and extending the service life of the valve seat and the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the structure of the liquid inlet valve and the liquid discharge valve;

[0012] Figure 3 It is a schematic diagram of the valve seat structure;

[0013] Figure 4 It is a schematic diagram of the pump head structure of an existing slurry pump. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-3 The utility model is described in detail with specific implementation modes.

[0015] A slurry pump head structure includes a pump head body 1, a suction valve 3, and a discharge valve 2. The suction valve 3 and the discharge valve 2 are respectively installed on the suction port and the discharge port in the pump head body 1. The suction valve 3 and the discharge valve 2 have the same structure and are both composed of a valve seat 5 and a valve core 4. The valve seat 5 is provided with an annular groove 5-1 on its outer periphery and a plurality of liquid spray holes 5-2 evenly distributed radially, and the inner ends of the liquid spray holes 5-2 are connected to the sealing surface of the valve seat 5, and the outer ends are connected to the annular groove 5-1; the pump head body 1 is provided with a first through hole 1-1 and a second through hole 1-2, the first through hole 1-1 is located at the side of the suction port at the lower part of the pump head body 1, the inner end of the first through hole 1-1 is connected to the annular groove 5-1 on the valve seat 5 of the suction valve 3, the second through hole 1-2 is located at the side of the discharge port at the upper part of the pump head body 1, the inner end of the second through hole 1-2 is connected to the annular groove 5-1 on the valve seat 5 of the discharge valve 2, and the outer ends of the first through hole 1-1 and the second through hole 1-2 are both connected to a high-pressure water source.

[0016] Furthermore, four liquid spray holes 5-2 are provided, and the diameter of the liquid spray holes 5-2 is 3-5 mm, and the diameter of the liquid spray holes 5-2 is preferably 4 mm.

[0017] Furthermore, the diameters of the first through hole 1-1 and the second through hole 1-2 are both 8-12 mm, and the diameters of the first through hole 1-1 and the second through hole 1-2 are preferably 10 mm.

[0018] Furthermore, one-way valves 6 are provided at the outer ends of the first through hole 1 - 1 and the second through hole 1 - 2 , and the one-way valves 6 are respectively connected to high-pressure water sources.

[0019] When the utility model is specifically applied to a slurry pump, when the discharge pressure of the slurry pump during operation is reduced to half of the normal pressure (about 6MPa), the pointer of the pressure gauge will swing left and right, indicating that there are debris between the valve seat 5 and the sealing surface of the valve core 4, so that the valve seat 5 and the valve core 4 cannot be completely sealed; at this time, the high-pressure water pump is started, and high-pressure (5MPa) water enters the corresponding annular groove 5-1 on the valve seat 5 through the first through hole 1-1 and the second through hole 1-2 respectively, and is sprayed out through the inner end of the spray hole 5-2 to lift the valve core 4. At the same time, the debris attached to the valve core 4 and the sealing surface of the valve core 4 is washed away. At this time, the pointer of the pressure gauge shows that the discharge pressure reaches the normal pressure, the high-pressure water pump is turned off, and the slurry pump resumes normal operation. In this reciprocating cycle, the debris attached to the valve core 4 and the sealing surface of the valve core 4 is continuously washed away to ensure that the valve core and the valve seat are completely closed, thus overcoming the problem that the valve seat and the sealing surface of the valve core cannot be completely closed due to the clamped debris, reducing the maintenance frequency, reducing the labor intensity, improving the working efficiency of the slurry pump, and extending the service life of the valve seat and the valve core.

[0020] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A slurry pump head structure, comprising a pump head body (1), a suction valve (3), and a discharge valve (2), wherein the suction valve (3) and the discharge valve (2) are respectively mounted on a suction port and a discharge port in the pump head body (1), wherein the suction valve (3) and the discharge valve (2) have the same structure and are both composed of a valve seat (5) and a valve core (4), and wherein: The valve seat (5) is provided with an annular groove (5-1) on its outer periphery and a plurality of liquid spray holes (5-2) are evenly distributed radially, and the inner ends of the liquid spray holes (5-2) are connected to the sealing surface of the valve seat (5), and the outer ends are connected to the annular groove (5-1); the pump head body (1) is provided with a first through hole (1-1) and a second through hole (1-2), the first through hole (1-1) is located on the side of the liquid suction port at the lower part of the pump head body (1), the inner end of the first through hole (1-1) is connected to the annular groove (5-1) on the valve seat (5) of the liquid suction valve (3), the second through hole (1-2) is located on the side of the liquid discharge port at the upper part of the pump head body (1), the inner end of the second through hole (1-2) is connected to the annular groove (5-1) on the valve seat (5) of the liquid discharge valve (2), and the outer ends of the first through hole (1-1) and the second through hole (1-2) are both connected to a high-pressure water source.

2. A slurry pump head structure according to claim 1, characterized in that: Four liquid spray holes (5-2) are provided, and the diameter of the liquid spray holes (5-2) is 3-5 mm.

3. A slurry pump head structure according to claim 2, characterized in that: The diameters of the first through hole (1-1) and the second through hole (1-2) are both 8-12 millimeters.

4. A slurry pump head structure according to claim 1, 2 or 3, characterized in that: One-way valves (6) are provided at the outer ends of the first through hole (1-1) and the second through hole (1-2), and the one-way valves (6) are respectively connected to high-pressure water sources.

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