Check valve and pumping device for low moisture content ferrite powder

Abstract

The utility model discloses a check valve and a pumping device for low-water content ferrite powder, which relates to the field of magnet production technology and can solve the problem of easy damage of the check valves before and after the pumping device in the prior art. A check valve for low-water content ferrite powder in an embodiment of the utility model comprises: a valve seat assembly, a gate body arranged in the valve seat assembly and slidably connected thereto, and a driving assembly connected to the gate body and used to drive it to reciprocate along the vertical feeding direction, wherein: a feed inlet and a discharge port are respectively arranged on opposite sides of the valve seat assembly, the gate body is located between the feed inlet and the discharge port, and a feed port is arranged on the gate body.

Description

Technical Field

[0001] The utility model relates to the technical field of magnet production, in particular to a check valve and a pumping device for low-water-content ferrite powder. Background Art

[0002] In the magnet production process, ferrite powder needs to be fed into the die cavity of the die casting mold. The feeding path of ferrite powder is: stirring and equalizing device, pumping device, die casting mold, and because the ferrite powder of a single die casting of the die casting mold is fixed, in order to avoid material backflow and pressure cutoff, shut-off valves are usually set at the feeding end and the discharging end of the pumping device, which are usually implemented by one-way valves.

[0003] The moisture content of ferrite powder in traditional magnet production is usually between 32% and 38%, which is relatively high. However, ferrite powder with high moisture content will displace more water during the die-casting process. At the same time, ferrite powder with high moisture content will also affect the density of the product after die-casting and affect the product quality. In order to improve the die-casting efficiency and product quality, ferrite powder with low moisture content is used. However, ferrite powder with low moisture content has insufficient water lubricity, which requires the pumping device to increase the pumping pressure, which makes the one-way valve between the pumping device and the mixing and equalizing device easy to be damaged.

[0004] During the operation of the die-casting mold, since its mold cavity is connected to the pumping device, the die-casting pressure of the die-casting mold will be transmitted to the pumping device through the feeding pipe. In order to further improve the processing efficiency, the pressure of the die-casting mold will generally be increased. Therefore, the path pressure between the pumping device and the die-casting mold will change from the traditional lower pressure state to a high pressure state, causing the one-way valve between the die-casting mold and the pumping device to be more easily damaged.

[0005] Therefore, in the feeding scenario of low-moisture-content ferrite powder, the problem that the one-way valves before and after the pumping device are easily damaged after being pressurized is a more urgent technical problem in this field. Utility Model Content

[0006] The purpose of the present application is to provide a check valve and a pumping device for low-water-content ferrite powder, which are used to solve the problem that the one-way valves before and after the pumping device in the prior art are easily damaged.

[0007] In order to solve the above technical problems, the utility model adopts the following solutions:

[0008] On the one hand, the present application provides a check valve for low-moisture-content ferrite powder, comprising:

[0009] A valve seat assembly, a gate body disposed in the valve seat assembly and slidably connected thereto, and a drive assembly connected to the gate body and used to drive it to reciprocate in a vertical feeding direction, wherein:

[0010] A feed inlet and a discharge port are respectively arranged on opposite sides of the valve seat assembly, a gate body is located between the feed inlet and the discharge port, and a feed port is arranged on the gate body.

[0011] Optionally, it also includes a sealing plate assembly disposed in the valve seat assembly and located on both sides of the gate body;

[0012] A coaxial material transfer channel is provided in the sealing plate assembly;

[0013] The feed port and the discharge port are both coaxially arranged with the feed passage, and the axis of the feed port is parallel to the axis of the feed passage.

[0014] Optionally, the sealing plate assembly includes a feed sealing pad, a feed sealing plate, a discharge sealing plate and a discharge sealing pad which are sequentially arranged along the material discharge direction;

[0015] The gate body is arranged between the feed sealing plate and the discharge sealing plate and is slidably connected thereto.

[0016] Optionally, the valve seat assembly includes a first valve seat and a second valve seat that are buckled, and a first connecting plate and a second connecting plate for fixing the first valve seat and the second valve seat;

[0017] The feed inlet and the discharge outlet are respectively arranged on the first valve seat and the second valve seat;

[0018] The first connecting plate and the second connecting plate are respectively provided with a first gate guide hole and a second gate guide hole, the gate body is arranged between the first valve seat and the second valve seat, and both ends of the gate body respectively penetrate the first gate guide hole and the second gate guide hole and are slidably connected therewith.

[0019] Optionally, one side of the first valve seat and the second valve seat is connected to the first connecting plate, and the other side is connected to the second connecting plate;

[0020] The first connecting plate and the second connecting plate are also respectively provided with a first adjusting groove and a second adjusting groove for adjusting the distance between the first valve seat and the second valve seat, and the openings of the first adjusting groove and the second adjusting groove are both arranged toward the feed port or the discharge port.

[0021] Optionally, the driving assembly includes two driving oil cylinders symmetrically arranged on both sides of the gate body, and the output ends of the two driving oil cylinders are respectively connected to two opposite end surfaces of the gate body;

[0022] The driving oil cylinders are connected to the valve seat assembly via connecting rods.

[0023] Optionally, the two driving cylinders have the same structure;

[0024] The driving oil cylinder comprises a driving cylinder body having a hydraulic oil chamber, and a piston with one end located in the hydraulic oil chamber and the other end connected to the end surface of the gate body;

[0025] The drive cylinder body is provided with an oil inlet for an external hydraulic pump station to supply oil to the hydraulic oil chamber.

[0026] Optionally, a pipeline connecting nozzle is installed on the inlet and / or outlet of the valve seat assembly.

[0027] On the other hand, the present application provides a pumping device for low-moisture content ferrite powder, including a feeding pump body, and at least two check valves for any of the above low-moisture content ferrite powders, the two check valves being respectively arranged at the feed end and the discharge end of the feeding pump body.

[0028] Optionally, it also includes a hydraulic pump station, and the power input end of the feeding pump body is connected to the hydraulic pump station;

[0029] The driving oil cylinders of the check valves are all connected to the hydraulic pump station.

[0030] Beneficial effects of the utility model:

[0031] 1. The present application sets a specially designed valve and utilizes a driving assembly to drive the reciprocating movement of the gate body. The entire feeding path can be cut off or opened by the reciprocating gate body. After the gate body cuts off the feeding path, the pressure applied by the die-casting mold during operation can also be cut off by the gate body, and the gate body has no room for movement in the feeding direction. In particular, the thickness of the gate body can be custom designed as needed, so that the entire valve has a strong pressure-bearing capacity, is not easily damaged by high pressure during the operation of the die-casting mold, and has good durability.

[0032] 2. The valve seat assembly of the present application includes a first valve seat and a second valve seat which are arranged in a buckled manner, and the distance between the first valve seat and the second valve seat can be adjusted by means of a first adjusting groove and a second adjusting groove, so that the pressure on the sealing plate assembly can be adjusted, thereby adjusting the sealing performance of the entire valve. In addition, the disassembly, assembly and maintenance of the valve are facilitated.

[0033] 3. The feeding channel in the valve of the present application is a straight line with a simple and reliable shape, which can minimize the resistance of the material in the channel and avoid the problem of excessive friction of the low-moisture ferrite powder after entering the valve, resulting in excessive feeding pressure of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the present application.

[0035] Figure 2 This is a schematic diagram of the three-dimensional structure from another viewing angle of Example 1 of the present application.

[0036] Figure 3 This is a schematic diagram of the main structure of Example 1 of the present application.

[0037] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0038] Figure 5 This is a structural diagram of Example 2 of the present application.

[0039] Explanation of the accompanying drawings: 11-first valve seat, 111-feed port, 12-second valve seat, 121-discharge port, 13-first connecting plate, 131-first adjusting groove, 132-first gate guide hole, 14-second connecting plate, 141-second adjusting groove, 142-second gate guide hole, 15-pipeline connecting nozzle, 21-driving cylinder, 211-oil inlet, 212-hydraulic oil chamber, 22-connecting rod, 23-piston, 3-gate body, 301-feed port, 4-sealing plate assembly, 401-feed channel, 5-feeding pump body, 6-hydraulic pump station. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0041] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0044] Embodiment 1:

[0045] like Figures 1 to 4 As shown, this embodiment provides a check valve for low-water-content ferrite powder, comprising:

[0046] A valve seat assembly, a gate body 3 disposed in the valve seat assembly and slidably connected thereto, and a drive assembly connected to the gate body 3 and used to drive it to reciprocate along a vertical feeding direction, wherein:

[0047] An inlet 111 and an outlet 121 are respectively provided on opposite sides of the valve seat assembly. The gate body 3 is located between the inlet 111 and the outlet 121 . A feed port 301 is provided on the gate body 3 .

[0048] The present embodiment is provided with a specially designed valve, and a driving assembly is utilized to drive the reciprocating movement of the gate body 3, so that the entire feeding path can be cut off or opened by the reciprocating gate body 3. After the gate body 3 cuts off the feeding path, the pressure applied by the die-casting mold during operation can also be cut off by the gate body 3, and the gate body 3 has no movable space in the feeding direction. In particular, the thickness of the gate body 3 can be custom designed as needed, so that the entire valve has a strong pressure-bearing capacity, is not easily damaged by high pressure during the operation of the die-casting mold, and has good durability.

[0049] In this embodiment, the standard moisture content of the ferrite powder is 10%. Those skilled in the art can deliver ferrite powder with other moisture contents such as 9%, 12%, etc. as required.

[0050] In this embodiment, if Figure 4 As shown, it also includes a sealing plate assembly 4 disposed in the valve seat assembly and located on both sides of the gate body 3;

[0051] A coaxial material transfer channel 401 is provided in the sealing plate assembly 4;

[0052] The feed port 111 and the discharge port 121 are both coaxially arranged with the feed passage 401, and the axis of the feed port 301 is parallel to the axis of the feed passage 401. The feed port 111, the feed passage 401, and the discharge port 121 are coaxially arranged to minimize the friction of the material in the valve and avoid the problem of excessive feeding pressure due to excessive friction in the valve.

[0053] In this embodiment, the feeding channel, the feeding port 111, and the discharging port 121 are all circular, and the diameters of the feeding channel, the feeding port 111, and the discharging port 121 are the same. The technicians can define the sizes as needed, and no detailed description is given here.

[0054] Specifically, in this embodiment, the sealing plate assembly 4 includes a feed sealing pad, a feed sealing plate, a discharge sealing plate and a discharge sealing pad which are sequentially arranged along the material discharge direction;

[0055] The gate body 3 is arranged between the feed sealing plate and the discharge sealing plate and is slidably connected thereto. The feed sealing pad and the discharge sealing pad in this embodiment both have certain elasticity, and the feed sealing plate and the discharge sealing plate are both metal plates, which can improve their durability.

[0056] In this embodiment, if Figures 1 to 4 As shown, the valve seat assembly includes a first valve seat 11 and a second valve seat 12 that are buckled, and a first connecting plate 13 and a second connecting plate 14 for fixing the first valve seat 11 and the second valve seat 12;

[0057] The feed port 111 and the discharge port 121 are respectively arranged on the first valve seat 11 and the second valve seat 12;

[0058] The first connecting plate 13 and the second connecting plate 14 are respectively provided with a first gate guide hole 132 and a second gate guide hole 142, the gate body 3 is arranged between the first valve seat 11 and the second valve seat 12, and the two ends of the gate body 3 respectively pass through the first gate guide hole 132 and the second gate guide hole 142 and are slidably connected therewith.

[0059] In this embodiment, the sealing plate assembly 4 is arranged between the first valve seat 11 and the second valve seat 12, wherein a sealing plate mounting groove is provided on the side of the second valve seat 12 facing the first valve seat 11, and the discharge sealing plate and the discharge sealing gasket of the sealing plate assembly 4 are installed in the sealing plate mounting groove, and a sealing plate mounting recess is provided on the side of the first valve seat 11 facing the second valve seat 12, and the discharge sealing plate and the discharge sealing gasket of the sealing plate assembly 4 are installed in the sealing plate mounting recess. By arranging the sealing plate assembly 4, the sealing performance of the valve can be improved.

[0060] Specifically, in this embodiment, one side of the first valve seat 11 and the second valve seat 12 is connected to the first connecting plate 13, and the other side is connected to the second connecting plate 14;

[0061] The first connecting plate 13 and the second connecting plate 14 are also respectively provided with a first adjusting groove 131 and a second adjusting groove 141 for adjusting the distance between the first valve seat 11 and the second valve seat 12 . The openings of the first adjusting groove 131 and the second adjusting groove 141 are both arranged toward the feed port 111 or the discharge port 121 .

[0062] By providing the first adjusting groove 131 and the second adjusting groove 141, the distance between the first valve seat 11 and the second valve seat 12 can be adjusted, so that the pressure on the sealing plate assembly 4 can be adjusted, thereby adjusting the sealing performance of the valve as a whole. In addition, the disassembly, assembly and maintenance of the valve are facilitated.

[0063] Specifically, the driving assembly includes two driving cylinders symmetrically arranged on both sides of the gate body 3, and the output ends of the two driving cylinders are respectively connected to the two opposite end surfaces of the gate body 3;

[0064] The driving oil cylinders are connected to the valve seat assembly through the connecting rod 22. By providing two driving oil cylinders, the reciprocating movement of the gate plate is driven by the two driving oil cylinders, so that the driving oil cylinders and the gate plate body 3 can be connected only by force, and the two do not need to form a lock in material or shape design, which can facilitate the maintenance of the valve, especially the replacement and disassembly of the gate plate body 3.

[0065] Specifically, in this embodiment, the structures of the two driving cylinders are the same;

[0066] The driving oil cylinder comprises a driving cylinder body 21 having a hydraulic oil chamber 212, and a piston 23 with one end located in the hydraulic oil chamber 212 and the other end connected to the end surface of the gate body 3;

[0067] The drive cylinder body 21 is provided with an oil inlet 211 for the external hydraulic pump station 6 to supply oil to the hydraulic oil chamber 212. Two drive oil cylinders with the same structure and symmetrical arrangement can reduce the manufacturing cost, and the oil delivery amount of the hydraulic pump station 6 is also easy to control.

[0068] Specifically, the feed port 111 and / or the discharge port 121 of the valve seat assembly are equipped with a pipe connection nozzle 15. In this embodiment, by providing the pipe connection nozzle 15, the installation and connection of the feeding pipe can be facilitated. In this embodiment, the pipe connection nozzle 15 is only installed on the feed port 111. In some embodiments, the pipe connection nozzle 15 can also be installed on the discharge port 121. In some embodiments, the pipe connection nozzle 15 can be installed on both the feed port 111 and the discharge port 121.

[0069] Example 2

[0070] On the basis of the above-mentioned embodiment 1, Figure 5As shown, this embodiment provides a pumping device for ferrite powder with low moisture content, including a feed pump body 5, and at least two check valves for ferrite powder with low moisture content as described above, and the two check valves are respectively arranged at the feed end and the discharge end of the feed pump body 5. By arranging the check valves at the feed end and the discharge end of the feed pump body 5, when the die-casting mold is working or the feed pump body 5 is working, resulting in a sudden increase in the pressure of the entire feeding path, the check valves can be used to provide a stable channel cutoff capability to avoid frequent damage to the cutoff valves on the feeding path.

[0071] In this embodiment, a hydraulic pump station 6 is also included, and the power input end of the feed pump body 5 is connected to the hydraulic pump station 6;

[0072] The driving oil cylinders of the check valves are all connected to the hydraulic pump station 6. A plurality of oil delivery pipelines are arranged on the hydraulic pump station 6 to provide power for the feeding pump body 5 and the check valve, so as to ensure that the check valve can stably cut off the feeding channel. The feeding pump body 5 can stably feed the material, solving the problem that the ferrite powder material has a low water content and the friction force increases after feeding, and the feeding channel cutoff requires greater power. The external hydraulic pump station 6 in this embodiment is a prior art and will not be described in detail here.

[0073] The rest of the structure of this embodiment is the same as that of the above-mentioned embodiment 1 and will not be described again here.

[0074] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A check valve for low moisture content ferrite powder, characterized in that: include: A valve seat assembly, a gate body (3) disposed in the valve seat assembly and slidably connected thereto, and a drive assembly connected to the gate body (3) and used to drive it to reciprocate in a vertical feeding direction, wherein: An inlet (111) and an outlet (121) are respectively arranged on opposite sides of the valve seat assembly, the gate body (3) is located between the inlet (111) and the outlet (121), and a feed port (301) is arranged on the gate body (3).

2. The check valve for low moisture content ferrite powder according to claim 1, characterized in that: It also includes a sealing plate assembly (4) arranged in the valve seat assembly and located on both sides of the gate body (3); A coaxial material transfer channel (401) is provided in the sealing plate assembly (4); The feed port (111) and the discharge port (121) are both coaxially arranged with the feed passage (401), and the axis of the feed port (301) and the axis of the feed passage (401) are parallel to each other.

3. The check valve for low moisture content ferrite powder according to claim 2, characterized in that: The sealing plate assembly (4) comprises a feed sealing pad, a feed sealing plate, a discharge sealing plate and a discharge sealing pad which are sequentially arranged along the material discharge direction; The gate body (3) is arranged between the feed sealing plate and the discharge sealing plate and is slidably connected thereto.

4. The check valve for low moisture content ferrite powder according to claim 1, characterized in that: The valve seat assembly comprises a first valve seat (11) and a second valve seat (12) which are arranged in a buckled manner, and a first connecting plate (13) and a second connecting plate (14) which are used to fix the first valve seat (11) and the second valve seat (12); The feed port (111) and the discharge port (121) are respectively arranged on the first valve seat (11) and the second valve seat (12); A first gate guide hole (132) and a second gate guide hole (142) are respectively provided on the first connecting plate (13) and the second connecting plate (14); the gate body (3) is arranged between the first valve seat (11) and the second valve seat (12); and two ends of the gate body (3) respectively penetrate the first gate guide hole (132) and the second gate guide hole (142) and are slidably connected thereto.

5. The check valve for low-water content ferrite powder according to claim 4, characterized in that: One side of the first valve seat (11) and the second valve seat (12) is connected to the first connecting plate (13), and the other side is connected to the second connecting plate (14); The first connecting plate (13) and the second connecting plate (14) are also respectively provided with a first adjusting groove (131) and a second adjusting groove (141) for adjusting the distance between the first valve seat (11) and the second valve seat (12); the openings of the first adjusting groove (131) and the second adjusting groove (141) are both arranged toward the feed port (111) or the discharge port (121).

6. The check valve for low moisture content ferrite powder according to claim 1, characterized in that: The driving assembly comprises two driving oil cylinders symmetrically arranged on both sides of the gate body (3), and the output ends of the two driving oil cylinders are respectively connected to two opposite end surfaces of the gate body (3); The driving oil cylinders are connected to the valve seat assembly via a connecting rod (22).

7. The check valve for low-water content ferrite powder according to claim 6, characterized in that: The structures of the two driving cylinders are the same; The driving oil cylinder comprises a driving cylinder body (21) having a hydraulic oil chamber (212), and a piston (23) with one end located in the hydraulic oil chamber (212) and the other end connected to the end surface of the gate body (3); The driving cylinder body (21) is provided with an oil inlet (211) for the external hydraulic pump station (6) to supply oil to the hydraulic oil chamber (212).

8. The check valve for low moisture content ferrite powder according to any one of claims 1 to 7, characterized in that: A pipeline connection nozzle (15) is installed on the feed port (111) and / or the discharge port (121) of the valve seat assembly.

9. A pumping device for low-water content ferrite powder, characterized in that: It comprises a feeding pump body (5), and at least two check valves for the low-moisture-content ferrite powder according to any one of claims 1 to 8, wherein the two check valves are respectively arranged at the feeding end and the discharging end of the feeding pump body (5).

10. The pumping device for low-water content ferrite powder according to claim 9, characterized in that: It also includes a hydraulic pump station (6), and the power input end of the feeding pump body (5) is connected to the hydraulic pump station (6); The driving oil cylinders of the check valves are all connected to the hydraulic pump station (6).

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