Lightweight flange type cast steel pump head for large flow

Abstract

The utility model discloses a light-weight flange type cast steel pump head for large flow. The light-weight flange type cast steel pump head comprises a pump head body. The pump head body is installed on the diaphragm pump. And a diaphragm is arranged between the pump head main body and the diaphragm pump. The pump head body is divided into a pipeline part, an end cover part and two connecting parts, wherein the end cover part and the two connecting parts are installed on the pipeline part. And an overflowing cavity is formed in the pipeline part. The two connecting parts are fixed to the two ends of the pipeline part respectively. And a medium inlet and a medium outlet which are communicated with the overflowing cavity are respectively formed in the two connecting parts. The pump head main body is of the integrated structure and is divided into the middle pipeline part, the end cover part and the two connecting parts, and the end cover part and the two connecting parts are installed on the pipeline part. According to the diaphragm pump, the horizontal mounting planes are arranged on the two connecting parts, so that a worker can directly place the one-way valve assembly on the mounting planes and fix the one-way valve assembly through bolts, rapid mounting of the one-way valve assembly is achieved, and the production efficiency of the diaphragm pump is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical diaphragm pump technology, specifically relating to a lightweight flanged cast steel pump head for large flow rates. Background Technology

[0002] In existing technology, diaphragm pumps divide the pump into two non-communicating parts using an elastic diaphragm, corrosion-resistant rubber, or elastic metal sheet: one for the fluid medium being transported and the other for the plunger. The reciprocating motion of the plunger is transmitted to the diaphragm via the medium on the same side, causing the diaphragm to also reciprocate, thereby achieving the intake and discharge of the fluid medium. The pump head mechanism is the cavity mechanism that enables the intake or discharge of the fluid medium.

[0003] like Figure 1 As shown, existing diaphragm pumps typically have two check valve assemblies 9 installed at the medium inlet and outlet to achieve unidirectional medium delivery. However, installing the check valve assemblies 9 requires adding pressure plates 10 on both sides of the pump head, and a connecting piece 11 fixed with bolts between the two pressure plates 10, thus forming a base for connecting and fixing the check valve assemblies 9. This type of pump head has too many parts, making the assembly process cumbersome and significantly reducing the production efficiency of the pump head. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a lightweight flanged cast steel pump head for large flow rates, thereby solving the technical problem of cumbersome installation of existing diaphragm pump heads.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A lightweight flanged cast steel pump head for high flow rates includes a pump head body. The pump head body is mounted on a diaphragm pump. A diaphragm is provided between the pump head body and the diaphragm pump. The pump head body is divided into a piping section, an end cap section mounted on the piping section, and two connecting sections.

[0007] The pipe section has a flow chamber. Two connecting parts are fixed to both ends of the pipe section. Each connecting part has a medium inlet and a medium outlet communicating with the flow chamber. The connecting parts have a horizontal mounting plane. The end cap has a recessed medium cavity; the medium cavity has a flow groove communicating with the flow chamber.

[0008] Furthermore, the pump head body is a one-piece structure.

[0009] Furthermore, the outer ring of the opening of the inner cavity of the medium is provided with a concave limiting groove.

[0010] Furthermore, the end cap is disposed on both sides of the outer wall of the pipe section. The end cap has multiple first mounting holes.

[0011] Furthermore, a second mounting hole is provided at each of the four corners of the mounting plane.

[0012] Furthermore, multiple reinforcing ribs are provided at the junction of the pipe section and the end cap section.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention features a one-piece pump head structure, divided into a central pipe section, an end cap section mounted on the pipe section, and two connecting sections. By providing horizontal mounting surfaces on the two connecting sections, operators can directly place the check valve assembly on the mounting surface and secure it with bolts, achieving rapid installation of the check valve assembly and improving the production efficiency of the diaphragm pump. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a diaphragm pump head in the prior art;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram showing the relative positions of the end cap and the connecting part in this utility model.

[0018] Reference numerals: 1. Pump head body; 2. Diaphragm; 3. Piping section; 4. End cover section; 5. Connecting section; 6. Flow chamber; 7. Medium inner cavity; 8. Limiting groove; 9. Mounting plane; 10. Check valve assembly; 11. Pressure plate; 12. Connecting piece. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figure 2 and 3As shown, a lightweight flanged cast steel pump head for high flow rates includes a pump head body 1. The pump head body 1 is mounted on a diaphragm pump. A diaphragm 2 is provided between the pump head body 1 and the diaphragm pump to prevent the liquid being pumped in the pump head body 1 from entering the diaphragm pump.

[0022] like Figure 2 As shown, the pump head body 1 is a one-piece structure, divided into a central pipe section, two end caps 3, and two connecting parts 4 mounted on the pipe section. The pipe section has a flow chamber 5. The two connecting parts 4 are fixed to both ends of the pipe section. Each connecting part 4 has a medium inlet and a medium outlet communicating with the flow chamber 5. Two one-way valve assemblies 9 are symmetrically arranged at the medium inlet and outlet. The end caps 3 are located on both sides of the pipe section, used to connect and fix the pump head body 1 to the diaphragm pump. During operation, the pumped liquid enters from the medium inlet under the combined drive of the diaphragm pump and the diaphragm 2, passes through the flow chamber 5, and exits from the medium outlet.

[0023] like Figure 3 As shown, a recessed media cavity 6 is provided on one side of the end cap 3. A diaphragm 2 is positioned at the opening of the media cavity 6. A flow groove communicating with the flow chamber 5 is provided on the media cavity 6. During operation, the diaphragm pump drives the diaphragm 2 to perform suction and bulging operations. When the diaphragm 2 suctions inward, it draws the liquid being transported from the media inlet and drives the liquid into the media cavity. When the diaphragm 2 bulges outward, it pushes the liquid outward from the media outlet.

[0024] Furthermore, the outer ring of the opening of the medium cavity 6 is provided with a concave limiting groove 7, which can cooperate with the protrusion of the outer ring of the diaphragm 2 to achieve initial limiting and fixing of the diaphragm 2.

[0025] In this embodiment, the end cap 3 has multiple first mounting holes. These first mounting holes are evenly distributed circumferentially around the axis of the end cap 3. During assembly, corresponding bolts pass through the first mounting holes and connect to the diaphragm pump, thus fixing the pump head body 1 to the diaphragm pump.

[0026] like Figure 3 As shown, both sides of the connecting part 4 are provided with horizontal mounting surfaces 8. Second mounting holes are provided at the four corners of the mounting surfaces 8. When assembling the check valve assembly 9, the operator can directly place the check valve assembly 9 on the mounting surfaces 8. The corresponding bolts are passed through the second mounting holes, and with the cooperation of the nuts, the check valve assembly 9 can be quickly installed.

[0027] In addition, in this embodiment, multiple reinforcing ribs are provided at the junction of the pipe section and the end cap section 3.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lightweight flanged cast steel pump head for high flow rates, comprising a pump head body (1); the pump head body (1) is mounted on a diaphragm pump; a diaphragm (2) is provided between the pump head body (1) and the diaphragm pump, characterized in that: The pump head body (1) is divided into a pipe section, an end cap section (3) installed on the pipe section, and two connecting sections (4). The pipe section has a flow chamber (5); two connecting parts (4) are respectively located at both ends of the pipe section; the two connecting parts (4) are respectively provided with a medium inlet and a medium outlet communicating with the flow chamber (5); the connecting parts (4) are provided with a horizontal mounting plane (8); the end cap (3) is provided with a concave medium cavity (6); the medium cavity (6) is provided with a flow groove communicating with the flow chamber (5).

2. A lightweight flanged cast steel pump head for high flow rates according to claim 1, characterized in that: The pump head body (1) is an integral structure.

3. A lightweight flanged cast steel pump head for high flow rates according to claim 1, characterized in that: The outer ring of the opening of the medium cavity (6) is provided with a recessed limiting groove (7).

4. A lightweight flanged cast steel pump head for high flow rates according to claim 1, characterized in that: The end cap (3) is disposed on both sides of the outer wall of the pipe section; the end cap (3) is provided with a plurality of first mounting holes.

5. A lightweight flanged cast steel pump head for high flow rates according to claim 1, characterized in that: Second mounting holes are provided at each of the four corners of the mounting plane (8).

6. A lightweight flanged cast steel pump head for high flow rates according to claim 4, characterized in that: Multiple reinforcing ribs are provided at the junction of the pipe section and the end cap section (3).

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