Discharging device for quartz sand acid leaching process

Abstract

The utility model discloses a blanking device for a quartz sand acid leaching process. The blanking device comprises a polytetrafluoroethylene ball valve, the blanking control block is fixedly connected with the tetrafluoro ball valve, a through hole matched with a valve hole of the tetrafluoro ball valve is vertically formed in the blanking control block, and a groove orthogonal to the through hole is transversely formed in the blanking control block; and the inserting plate is slidably connected into the groove and used for controlling opening and closing of the through hole, the end, connected with the groove, of the inserting plate is an arc-shaped end, and the upper side face and the lower side face of the inserting plate are each provided with a fluororubber layer in interference fit with the discharging control block in a lining mode. The discharging control block and the inserting plate which are in sliding connection are arranged at the outlet end of the tetrafluoro ball valve, material discharging control can be achieved through the inserting plate, the opening and closing frequency of the tetrafluoro ball valve is effectively reduced, the service life of the tetrafluoro ball valve is prolonged, and the production cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of quartz sand processing equipment, and in particular to a feeding device for the acid leaching process of quartz sand. Background Technology

[0002] High-purity silica sand is a key material in high-end fields such as semiconductor chips, optical fiber communication, and photovoltaic energy, and its purity directly affects product performance. Natural silica sand often contains impurities such as iron, aluminum, and titanium. Physical methods (such as magnetic separation and flotation) are insufficient to remove impurities at grain boundaries, microcracks, and within crystals. Therefore, acid leaching is necessary for deep purification. Currently, the acid leaching process commonly uses a double-cone rotary dryer. During feeding, a cast steel PTFE-lined ball valve is typically used to release the silica sand and mixed acid solution together into a container, which is then connected to a suction filter to continuously remove the acid solution and feed the silica sand.

[0003] When using a double cone rotary dryer for acid leaching, and feeding quartz sand and mixed acid solution through a cast steel PTFE-lined ball valve, the double cone rotary dryer typically produces 2000 kg of quartz sand per batch, while the accompanying flotation machine typically produces around 400 kg. In this situation, the cast steel PTFE-lined ball valve needs to be opened and closed at least five times. Furthermore, the material and mixture are often unevenly distributed during feeding, and the vacuum filtration speed is frequently slower than the feeding speed. This results in the cast steel PTFE-lined ball valve needing to be opened and closed more than ten times during the feeding process. This frequent opening and closing of the PTFE ball valve causes the fine quartz sand particles embedded in it to easily wear down the PTFE portion. Generally, after about thirty days of use, the basic sealing performance of the cast steel PTFE-lined ball valve will fail, leading to acid leakage during production and rendering it unusable, significantly reducing its service life.

[0004] Based on this, this application provides a feeding device for the acid leaching process of quartz sand that can improve the service life of cast steel PTFE-lined ball valves. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a feeding device for the acid leaching process of quartz sand, comprising:

[0006] PTFE ball valve;

[0007] The material feeding control block is fixedly connected to the PTFE ball valve. The material feeding control block has a vertical through hole that matches the valve hole of the PTFE ball valve, and a horizontal groove that is orthogonal to the through hole.

[0008] The insert plate is slidably connected in the groove to control the opening and closing of the through hole, and the end of the insert plate connected to the groove is an arc end. The upper and lower sides of the insert plate are lined with a fluororubber layer that is interference fit with the feeding control block.

[0009] In some embodiments, the feeding control block includes a base plate and a pressure plate fixedly connected, both the base plate and the pressure plate are lined with a fluororubber layer, the through holes include a first through hole provided on the base plate and a second through hole provided on the pressure plate, and the base plate and / or the pressure plate are provided with bosses that match the insert plate and can form a groove.

[0010] In some embodiments, the end of the insert plate away from the curved end has an insert plate opening.

[0011] In some embodiments, the PTFE ball valve is fixedly connected to the feed control block by bolts and nuts.

[0012] In some embodiments, the base plate and the pressure plate are fixedly connected by bolts and nuts.

[0013] In some embodiments, the thickness of the fluororubber layer on the insert plate is 3-5 mm.

[0014] Compared with existing technologies, the feeding device for the quartz sand acid leaching process provided in this application uses a feeding control block and a slide plate at the outlet end of a PTFE ball valve. The slide plate slides into a groove on the feeding control block, thereby controlling the opening and closing of the through-hole on the control block. This allows for material feeding control even when the PTFE ball valve is open, based on the matching of the slide plate and the groove. Therefore, the feeding device for the quartz sand acid leaching process provided in this application, by replacing the PTFE ball valve with a slide plate to control material feeding, effectively reduces the number of times the PTFE ball valve is opened and closed, increases the service life of the PTFE ball valve, and significantly reduces production costs. Attached Figure Description

[0015] Figure 1 This is a perspective view of a feeding device for the acid leaching process of quartz sand according to an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the structure of a feeding device for the acid leaching process of quartz sand according to an embodiment of this application.

[0017] Figure 3 This is a cross-sectional view of a feeding device for a quartz sand acid leaching process according to an embodiment of this application.

[0018] In the diagram: 1. PTFE ball valve, 2. Feed control block, 21. Base plate, 22. Pressure plate, 3. Insert plate, 41. First through hole, 42. Second through hole, 5. Groove, 6. Insert plate opening. Detailed Implementation

[0019] To facilitate understanding of the structure and operation of this utility model, the following description, in conjunction with the accompanying drawings and optimized embodiments, provides a more comprehensive and detailed account of the utility model. However, the scope of protection of this utility model is not limited to the specific embodiments described below. It should be noted that, without affecting the effectiveness of use, the structural features and component dimensions, connection methods, and device sizes in the embodiments of this utility model can be changed.

[0020] Unless otherwise defined, all technical terms used below have the same meaning as commonly understood by those skilled in the art. The terms "first," "second," and similar terms used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely for the purpose of distinguishing corresponding components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "connection" or "connected" are not limited to direct connections, but can refer to indirect connections through other intermediate connecting parts. Terms such as "above," "below," "one side," "the other side," "vertical," and "horizontal" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0021] like Figures 1-3 As shown, the present invention provides a feeding device for the acid leaching process of quartz sand, comprising:

[0022] PTFE ball valve 1;

[0023] The feeding control block 2 is fixedly connected to the PTFE ball valve 1. The feeding control block 2 has a through hole that matches the valve hole of the PTFE ball valve 1 vertically, and a groove 5 that is orthogonal to the through hole is opened horizontally on the feeding control block 2.

[0024] Insert plate 3 is slidably connected in groove 5 to control the opening and closing of through hole, and the end of insert plate 3 connected to groove 5 is arc-shaped. The upper and lower sides of insert plate 3 are lined with fluororubber layer that is interference fit with feeding control block 2.

[0025] In the above embodiments, the thickness of the fluororubber layer on the insert plate 3 is 3-5mm. It should be noted that the fluororubber layer is lined on the upper and lower sides of the insert plate 3 by high-pressure injection molding and compression molding processes. Due to the elasticity of the fluororubber layer, it has good sealing performance and corrosion resistance. Therefore, when the insert plate 3 slides in the groove 5, on the one hand, the insert plate 3 can slide freely in the groove 5, and on the other hand, it can also ensure that the material will not overflow from the groove 5.

[0026] In the above embodiments, by setting a feeding control block 2 and a slide plate 3 at the outlet end of the PTFE ball valve 1, and utilizing the sliding connection between the slide plate 3 and the groove 5 on the feeding control block 2 to control the opening and closing of the through hole on the feeding control block 2, material feeding can be controlled based on the matching of the slide plate 3 and the groove 5 when the PTFE ball valve 1 is open. Therefore, the feeding device for the quartz sand acid leaching process provided in this application, by replacing the PTFE ball valve 1 with the slide plate 3 to control the material feeding, effectively reduces the number of times the PTFE ball valve 1 is opened and closed, improves the service life of the PTFE ball valve 1, and significantly reduces production costs.

[0027] In some embodiments, the feeding control block 2 includes a base plate 21 and a pressure plate 22 fixedly connected. Both the base plate 21 and the pressure plate 22 are lined with a fluororubber layer. The through holes include a first through hole 41 provided on the base plate 21 and a second through hole 42 provided on the pressure plate 22. The base plate 21 and / or the pressure plate 22 are provided with bosses that match the insert plate 3 and can form a groove 5.

[0028] In the above embodiments, fluororubber layers are lined on the base plate 21 and the pressure plate 22 by high-pressure injection molding and compression molding. The thickness of the fluororubber layers is 3-5mm. For example, the thickness of the fluororubber layers can be 3mm, 3.5mm, 4mm, 4.5mm and 5mm. The fluororubber layers on the base plate 21 are bonded to the PTFE portion in the PTFE ball valve 1 to achieve a sealing effect. The fluororubber layers on the pressure plate 22 and the base plate 21 are bonded to the fluororubber layers on the insert plate 3 when the through hole is closed, thereby ensuring the sealing performance of the material control block 2 when the through hole is closed.

[0029] In the above embodiment, the material feeding control block 2 is configured as a fixedly connected and detachable base plate 21 and pressure plate 22. This facilitates the machining of the groove 5 on the material feeding control block 2 and also facilitates the disassembly and maintenance of the base plate 21 and pressure plate 22 later. It should be noted that the boss is set on the lower side of the base plate 21, or on the upper side of the pressure plate 22, or simultaneously on the lower side of the base plate 21 and the upper side of the pressure plate 22. It is only necessary to ensure that the base plate 21 and pressure plate 22, after being fixedly connected, can form a groove 5 that matches the insert plate 3.

[0030] In some embodiments, the insertion plate 3 has an insertion port 6 at one end away from the arc-shaped end.

[0031] In the above embodiments, by opening a plate opening 6 at the end of the plate 3 away from the arc end, it is easier for the operator to control the plate 3 to slide in the groove 5, which improves the operating efficiency to a certain extent and reduces the operating intensity of the operator.

[0032] In some embodiments, the PTFE ball valve 1 is fixedly connected to the feeding control block 2 by bolts and nuts.

[0033] In the above embodiment, the PTFE ball valve 1 and the feeding control block 2 are fixedly connected by bolts and nuts, which not only ensures the reliability of the connection between the PTFE ball valve 1 and the feeding control block 2, but also facilitates later maintenance. It should be noted that the bolts are PPH hexagonal head bolts and the nuts are PPH hexagonal nuts. The bolts and nuts made of PPH material can meet the requirements of corrosion resistance and strength.

[0034] In some embodiments, the base plate 21 and the pressure plate 22 are fixedly connected by bolts and nuts.

[0035] In the above embodiment, the base plate 21 and the pressure plate 22 are fixedly connected by bolts and nuts, which not only ensures the reliability of the connection between the base plate 21 and the pressure plate 22, but also facilitates later maintenance. It should be noted that the bolts are PPH hexagonal head bolts and the nuts are PPH hexagonal nuts. The bolts and nuts made of PPH material can meet the requirements of corrosion resistance and strength.

[0036] The above provides a detailed description of a feeding device for the acid leaching process of quartz sand provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A discharging device for a quartz sand acid leaching process, characterized by, include: PTFE ball valve; The material feeding control block is fixedly connected to the PTFE ball valve. The material feeding control block has a vertical through hole that matches the valve hole of the PTFE ball valve, and a horizontal groove that is orthogonal to the through hole. The insert plate is slidably connected in the groove to control the opening and closing of the through hole, and the end of the insert plate connected to the groove is an arc end. The upper and lower sides of the insert plate are lined with a fluororubber layer that is interference fit with the feeding control block.

2. The feeding device for the acid leaching process of quartz sand as described in claim 1, characterized in that, The material feeding control block includes a fixedly connected base plate and a pressure plate. Both the base plate and the pressure plate are lined with a fluororubber layer. The through holes include a first through hole on the base plate and a second through hole on the pressure plate. The base plate and / or the pressure plate are provided with bosses that match the insert plate and can form a groove.

3. The discharging apparatus for the acid leaching process of quartz sand according to claim 1, characterized by The insertion plate has an insertion port at one end away from the curved end.

4. The discharging apparatus for the acid leaching process of quartz sand according to claim 1, characterized by The PTFE ball valve and the feeding control block are fixedly connected by bolts and nuts.

5. The discharging apparatus for the acid leaching process of quartz sand according to claim 2, characterized by The base plate and the pressure plate are fixedly connected by bolts and nuts.

6. The feeding device for the acid leaching process of quartz sand as described in claim 1, characterized in that, The thickness of the fluororubber layer on the insert plate is 3-5 mm.

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