Feed valve box for corrosion-resistant diaphragm pump
By using pipe processing parts to replace traditional castings, and designing split valve covers and fastening guides, the problems of easy corrosion and short service life of the traditional feed valve box are solved, achieving higher corrosion resistance and service life, and reducing the cost of Maintenance difficulty and production costs.
Patent Information
- Application Number
- CN202421817691.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The valve box of the traditional feed valve box is a casting, with large size, high weight, easy to cause casting defects, and easy to corrode in an acidic environment, resulting in short service life and difficult maintenance, which affects the continuous operation and profitability of the equipment.
Use cylindrical pipe processing parts instead of traditional castings, design split valve covers and fastening guides, use rectifying holes and sealing rings to improve sealing and medium flow consistency, and reduce eddy currents and cavitation.
It reduces production costs, reduces quality defects, improves the corrosion resistance and service life of the valve box, reduces maintenance difficulty, and improves the continuous operation rate and profitability of the equipment.
Smart Images
Figure CN222376688U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of corrosion-resistant diaphragm pumps, and in particular relates to a feed valve box for a corrosion-resistant diaphragm pump. Background Art
[0002] Corrosion-resistant diaphragm pumps generally use stainless steel or titanium alloy as corrosion-resistant materials for the flow-through parts of diaphragm pumps. Since diaphragm pumps are large equipment, the valve box of the traditional feed valve box is a casting, which has the characteristics of large size, high weight, and easy casting defects. Corrosion-resistant diaphragm pumps operate in an acidic environment. The valves in the valve box are vulnerable parts, with high replacement frequency, service life, and maintenance difficulty. They are directly related to the continuous operation rate of the user's equipment, which in turn affects the user's profitability. Utility Model Content
[0003] The utility model aims at the above-mentioned problems, makes up for the deficiencies of the prior art, and provides a feed valve box for a corrosion-resistant diaphragm pump; the utility model can reduce production costs, reduce quality defects, increase service life, and reduce maintenance difficulty.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions.
[0005] The utility model provides a feed valve box for a corrosion-resistant diaphragm pump, characterized in that it comprises a valve cover, a valve box body, a valve cone and a valve seat, the valve box body is a cylindrical pipe processing part, the valve cover is embedded in the upper part of the valve box body, a plurality of rectifying holes are evenly distributed on the valve cover in the circumferential direction, the bottom of the valve cover is connected with a fastening conduit, the valve cone is a cone valve, which is inserted into the inner side of the fastening conduit, a valve nut is connected to the middle and lower part of the valve cone, a valve spring is sleeved on the outer side of the fastening conduit, two ends of the valve spring are respectively in contact with the valve cover and the valve nut, the valve seat is arranged at the lower end of the inner part of the valve box body and fits with the valve box body, the lower side surface of the valve cone can be clamped on the inclined surface of the upper part of the valve seat through an inclined surface structure, a valve rubber is arranged between the valve nut and the lower end of the valve cone, the valve rubber is compressed by the valve nut and the valve cone, the outer diameter of the valve rubber is larger than the outer diameter of the bottom of the valve cone, and the lower side surface of the valve rubber can also be clamped on the inclined surface of the upper part of the valve seat through an inclined surface structure.
[0006] Furthermore, a plurality of circular holes with the same diameter are evenly arranged above the fastening conduit.
[0007] Furthermore, a small O-type sealing ring and a large O-type sealing ring are arranged between the valve seat and the valve box.
[0008] Furthermore, a feed sealing ring is provided at the lower part of the valve box body.
[0009] Furthermore, a diaphragm chamber sealing ring is arranged on the upper part of the valve box body.
[0010] Furthermore, a plurality of bolt holes are provided on the upper outer side of the valve box body for processing and hoisting.
[0011] Furthermore, the valve cover is connected to the fastening conduit via valve bolts.
[0012] Furthermore, there are at least six rectifying holes and the diameters of the rectifying holes are the same.
[0013] The beneficial effects of the utility model.
[0014] The valve box of the utility model uses pipe processing parts to replace the traditional castings, which not only reduces the production cost, but also eliminates the hidden dangers of defects in the casting process, avoids the formation of easily corrosive parts caused by casting defects, greatly improves the corrosion resistance of the valve box, and increases the service life of the valve box; the medium flows from bottom to top, so that the flow direction of the medium in each place in the valve box is basically consistent, avoiding the vortex generated by the 90° change of the lower inlet and side outlet flow direction of the traditional feed valve box. At the same time, the rectifying holes at the valve cover reduce the possibility of vortex and cavitation when the medium flows out of the valve cover, effectively extending the service life of each flow-through part in the valve box; the valve cover and the wearing part fastening conduit adopt a split design. Compared with the traditional integrated design, when replacing spare parts, the fastening conduit can be replaced separately to reduce maintenance costs; the valve rubber contacts the valve seat before the valve cone contacts the valve seat, which plays a buffering role; the structure is simple, the valve cover and the valve box are not connected by bolts and nuts, which is convenient and labor-saving during installation and maintenance, and reduces the process of disassembling and assembling the valve cover, which greatly improves the work efficiency of the on-site staff of the diaphragm pump to install and replace the wearing parts inside the valve box. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.
[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.
[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model after installation.
[0018] Markings in the figure: 1 is the valve cover, 2 is the valve box, 3 is the valve cone, 4 is the valve seat, 5 is the rectifying hole, 6 is the fastening guide tube, 7 is the valve nut, 8 is the valve spring, 9 is the valve rubber, 10 is the round hole, 11 is the small O-type sealing ring, 12 is the large O-type sealing ring, 13 is the feed sealing ring, 14 is the diaphragm chamber sealing ring, 15 is the bolt hole, 16 is the valve bolt, 17 is the diaphragm chamber, 18 is the bracket, 19 is the foundation, 20 is the boss stud, 21 is the hexagonal nut, 22 is the feed pipe, 23 is the square flange, and 24 is the square feed side contact surface. DETAILED DESCRIPTION
[0019] As shown in the accompanying drawings, this embodiment provides a feed valve box for a corrosion-resistant diaphragm pump, including a valve cover 1, a valve box body 2, a valve cone 3, and a valve seat 4.
[0020] The valve box body 2 is a cylindrical pipe processing part, which replaces the traditional castings. It not only reduces the production cost, but also eliminates the hidden dangers of defects in the casting process, avoids the formation of easily corrosive parts caused by casting defects, greatly improves the corrosion resistance of the valve box body 2, and increases the service life of the valve box body 2.
[0021] The valve cover 1 is embedded in the upper part of the valve box 2. At least six rectifying holes 5 are evenly distributed on the valve cover 1 in the circumferential direction, and the diameters of the rectifying holes 5 are the same, which are used to pass the medium and rectify the outflow state of the medium at the outlet. The possibility of eddy current and cavitation when the medium flows out of the valve cover 1 is reduced, and the service life of each flow-passing part in the valve box is effectively extended.
[0022] The valve cover 1 and the fastening conduit 6 adopt a split design. The bottom of the valve cover 1 is connected to the fastening conduit 6 through a valve bolt 16. A plurality of circular holes 10 with the same diameter are evenly distributed above the fastening conduit 6. Compared with the traditional integrated design, when replacing spare parts, the fastening conduit 6 can be replaced separately to reduce maintenance costs.
[0023] The valve cone 3 is a cone valve, which is inserted into the inner side of the fastening conduit 6. When the valve cone 3 is working, it rises and falls under the influence of the pressure difference between the upper and lower surfaces. The fastening conduit 6 plays a guiding role when the valve cone 3 moves up and down.
[0024] A valve nut 7 is connected to the lower middle portion of the valve cone 3 , a valve spring 8 is sleeved on the outside of the fastening guide tube 6 , and both ends of the valve spring 8 are in contact with the valve cover 1 and the valve nut 7 respectively, and are compressed by the valve cover 1 and the valve nut 7 .
[0025] The valve seat 4 is arranged at the lower end of the valve housing 2 and fits with the valve housing 2 . The lower side of the valve cone 3 can be stuck on the upper inclined surface of the valve seat 4 through an inclined surface structure.
[0026] A valve rubber 9 is arranged between the valve nut 7 and the lower end of the valve cone 3. The valve rubber 9 is compressed by the valve nut 7 and the valve cone 3. The lower side of the valve rubber 9 can also be stuck on the inclined surface of the upper part of the valve seat 4 through the inclined surface structure. The outer diameter of the valve rubber 9 is larger than the outer diameter of the bottom of the valve cone 3. Before the valve cone 3 contacts the valve seat 4, the valve rubber 9 can contact the valve seat 4 before the valve cone 3 contacts the valve seat 4, thereby playing a buffering role.
[0027] A small O-type sealing ring 11 and a large O-type sealing ring 12 are arranged between the valve seat 4 and the valve box body 2 , and the double sealing effectively improves the sealing performance of the valve seat 4 and the valve box body 2 .
[0028] A feed sealing ring 13 is provided at the lower part of the valve box body 2 for sealing between the valve box body 2 and the feed pipe 22. A diaphragm chamber sealing ring 14 is provided at the upper part of the valve box body 2 for sealing between the valve box body 2 and the diaphragm chamber 17.
[0029] A plurality of bolt holes 15 are provided on the upper outer side of the valve box body 2 for processing and hoisting, thereby improving the safety and convenience of the processing and hoisting operations.
[0030] During installation, the diaphragm chamber 17 is installed on the foundation 19 through the bracket 18, the lower end of the valve box body 2 is connected to the square flange 23 above the feed pipe 22 through the boss stud 20 and the hexagonal nut 21, and the upper end of the valve box body 2 is connected to the square feed side contact surface 24 below the diaphragm chamber 17 through the boss stud 20 and the hexagonal nut 21. The medium in the valve box flows from bottom to top, so that the flow direction of the medium in each place in the valve box is basically consistent, avoiding the vortex generated by the 90° change of the lower inlet and side outlet flow direction of the traditional feed valve box.
[0031] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the implementation mode of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.
Claims
1. A feed valve box for a corrosion-resistant diaphragm pump, characterized in that: The valve body (2) comprises a valve cover (1), a valve box (2), a valve cone (3), and a valve seat (4), wherein the valve box (2) is a cylindrical pipe processed part, the valve cover (1) is embedded in the upper part of the valve box (2), a plurality of rectifying holes (5) are evenly distributed on the valve cover (1) in a circumferential direction, the bottom of the valve cover (1) is connected to a fastening conduit (6), the valve cone (3) is a cone valve, which is inserted into the inner side of the fastening conduit (6), the lower part of the valve cone (3) is connected to a valve nut (7), the outer side of the fastening conduit (6) is provided with a valve spring (8), and the two ends of the valve spring (8) are respectively connected to the valve cover (1) and The valve nut (7) is in contact with the valve seat (4), the valve seat (4) is arranged at the lower end of the valve box (2) and is in contact with the valve box (2), the lower side surface of the valve cone (3) can be clamped on the upper inclined surface of the valve seat (4) through an inclined surface structure, a valve rubber (9) is arranged between the valve nut (7) and the lower end of the valve cone (3), the valve rubber (9) is compressed by the valve nut (7) and the valve cone (3), the outer diameter of the valve rubber (9) is larger than the outer diameter of the bottom of the valve cone (3), and the lower side surface of the valve rubber (9) can also be clamped on the upper inclined surface of the valve seat (4) through an inclined surface structure.
2. A feed valve box for a corrosion-resistant diaphragm pump according to claim 1, characterized in that: A plurality of circular holes (10) with the same diameter are evenly distributed above the fastening conduit (6).
3. The feed valve box for a corrosion-resistant diaphragm pump according to claim 1, characterized in that: A small O-type sealing ring (11) and a large O-type sealing ring (12) are provided between the valve seat (4) and the valve box body (2).
4. A feed valve box for a corrosion-resistant diaphragm pump according to claim 1, characterized in that: A feed sealing ring (13) is provided at the lower part of the valve box body (2).
5. The feed valve box for a corrosion-resistant diaphragm pump according to claim 1, characterized in that: A diaphragm chamber sealing ring (14) is provided on the upper part of the valve box body (2).
6. The feed valve box for a corrosion-resistant diaphragm pump according to claim 1, characterized in that: The upper outer portion of the valve box body (2) is provided with a plurality of bolt holes (15) for processing and hoisting.
7. The feed valve box for a corrosion-resistant diaphragm pump according to claim 1, characterized in that: The valve cover (1) is connected to the fastening conduit (6) via a valve bolt (16).
8. The feed valve box for a corrosion-resistant diaphragm pump according to claim 1, characterized in that: There are at least six rectifying holes (5), and the diameters of the rectifying holes (5) are the same.