Vacuum belt filter for preparing tungsten trioxide

Abstract

The invention discloses a vacuum belt filter for preparing tungsten trioxide, and relates to the field of vacuum belt filters, the vacuum belt filter comprises an annular porous rubber belt and filter cloth attached to the upper surface of the upper end of the annular porous rubber belt, and the inner side of the annular porous rubber belt is provided with a conveyor; a plurality of water absorption devices are arranged on the conveyor in the conveying direction. The vacuum belt filter for preparing tungsten trioxide has the beneficial effects that a conventional sliding sealing connection mode commonly adopted by the porous rubber belt and the water absorption box is improved into a static sealing connection mode, the sealing effect of the porous rubber belt and the water absorption box is greatly enhanced, the static sealing service life is long, the sealing performance is reliable and lasting, and the service life is long. The requirement for further improving the working vacuum degree of the vacuum belt filter is effectively met, the situation that the operation cost is greatly increased due to air leakage is avoided, and cost is reduced and benefit is increased for enterprises after the redundant content of WO3 in APT is reduced subsequently.

Description

Technical Field

[0001] The invention relates to the field of vacuum belt filters, in particular to a vacuum belt filter for preparing tungsten trioxide. Background Art

[0002] As an important intermediate product of tungsten metallurgy, ammonium paratungstate is the main trade product in the international tungsten market and is widely used in the manufacture of metal tungsten powder, vacuum materials, alloy molds and mechanical equipment.

[0003] The tungsten content of APT-0 grade products is required to be 88.5%-89.2%, but the tungsten content in APT greater than 88.5% is not priced. Within the standard range, the higher the tungsten content, the more valuable metal loss and waste will be caused. Therefore, companies always try to reduce the WO content in APT while meeting the tungsten content requirements of APT-0 grade products. 3 excess content.

[0004] Commonly, the production workshops of enterprises often increase the working vacuum degree of the vacuum belt filter, for example, adjust the original setting from -0.25MPa to -0.35MPa, and by increasing the vacuum degree, reduce the free moisture in the wet APT, and then reduce the microwave drying temperature, and then reduce the WO in the APT. 3 content, avoiding WO caused by excessively high drying temperature 3 By increasing the vacuum degree of the vacuum belt filter, the WO in APT 3 The average content dropped from 89.17% at -0.25MPa to 89.04% at -0.35MPa, a decrease of 0.13%. Based on an annual output of 7,000 tons of APT and a price of 180,000 yuan per ton, the company can increase its efficiency by more than one million yuan each year, with obvious economic benefits.

[0005] However, the above-mentioned "increased efficiency of more than one million for the company every year" is only a theoretical cost reduction. In reality, the cost is not that much. In fact, the APT production cost has increased instead of decreased, because increasing the working vacuum degree of the vacuum belt filter will inevitably increase its operating cost. Especially when the sliding sealing effect of the vacuum disc and the rubber belt is poor, slightly increasing the working vacuum degree of the vacuum belt filter will greatly increase its operating cost.

[0006] The conventional structure of a vacuum belt filter is shown in the patent publication number CN221999117U. The vacuum disc is fixed, the rubber belt and the upper surface of the vacuum disc are slidably sealed, a plurality of through holes are arranged on the rubber belt, a filter cloth is attached to the upper surface of the rubber belt, the slurry to be filtered is evenly distributed on the upper surface of the filter cloth, the vacuum disc is connected to a vacuum pump, and the inside of the vacuum disc is evacuated to allow water in the slurry to pass through the through holes on the filter cloth and the rubber belt and fall into the vacuum disc. This is the basic working principle of a vacuum belt filter.

[0007] From the working principle of the above-mentioned vacuum belt filter, it can be known that whether the sliding sealing connection structure between the rubber belt and the vacuum disk is well sealed determines whether the vacuum belt filter can normally filter out moisture in the slurry. It is well known that the sealing effect of dynamic seal is not as good as that of static seal, and the dynamic sealing structure is affected by the long-term sliding friction loss of the sealing components, and the sealing effect decreases with time. That is, the sealing effect of the connection between the rubber belt and the vacuum disk gradually decreases as the working time of the vacuum belt filter increases, and the connection between the rubber belt and the vacuum disk leaks more seriously as the vacuum degree in the vacuum disk increases. At this time, if you want to further increase the vacuum degree in the vacuum disk slightly, you will inevitably need to greatly increase the power of the vacuum pump, which will greatly increase the energy consumption of the vacuum pump and the operating cost. Therefore, it is imperative to improve the sealing form of the vacuum disk and the rubber belt and improve the durability of the seal. Summary of the invention

[0008] The main purpose of the present invention is to propose a vacuum belt filter for preparing tungsten trioxide, which aims to solve the problem that the rubber belt and the vacuum disk in the current vacuum belt filter are connected by sliding seals, the sealing effect is poor, the sealing performance is not durable, and the vacuum degree of the vacuum belt filter is further improved and the WO in APT is reduced. 3 The problem of excess content.

[0009] In order to solve the above problems, the present invention proposes a vacuum belt filter for preparing tungsten trioxide, comprising an annular porous rubber belt and a filter cloth attached to the upper surface of the upper end of the annular porous rubber belt, a conveyor is arranged on the inner side of the annular porous rubber belt, a plurality of water absorption devices are arranged on the conveyor along the conveying direction, and the water absorption device located above the conveyor moves along the moving direction of the upper end of the annular porous rubber belt under the drive of the conveyor; The water absorbing device comprises: Motor 2 is connected to the conveyor and drives the motor 2 to move through the conveyor. The central axis of the motor 2 located above the conveyor is perpendicular to the upper end surface of the annular porous rubber belt. The water absorption box is connected to the output shaft of the second motor, and the second motor drives the water absorption box to rotate around the second motor. The water absorption box is open, and the box opening at the upper end of the water absorption box located above the conveyor is close to the lower surface of the upper end of the annular porous rubber belt and moves at the same speed; The vacuum pump is connected with the interior of the water suction box through an air suction pipe. The air suction pipe is also connected with an air-water separator, and the air-water separator is installed inside the water suction box.

[0010] In one embodiment, the conveyor comprises: A mounting frame, on which at least one pair of belt rollers is rotatably mounted via a rotating shaft, a transmission belt is tightly sleeved outside the belt rollers, a mounting block is fixedly mounted on the transmission belt, a slider is fixedly mounted on the mounting block, there are multiple mounting blocks, and one mounting block is fixedly connected to the second motor of a water suction device; A slide rail is fixedly connected to the mounting frame, and the slider is slidably connected to the slide rail; The conductive rod is fixedly connected to the mounting frame, and the water absorption device also includes a power receiving rod, and the power receiving rod is in sliding contact with the conductive rod to draw electricity; Motor 1 is mounted on the mounting frame and is connected to the rotating shaft; The displacement sensor is used to detect the position of the mounting block when it is moved by the transmission belt.

[0011] In one embodiment, the water absorption box and the output shaft of the second motor are fixedly connected via a swivel seat, and the rotation center line of the water absorption box driven by the second motor does not contact the water absorption box.

[0012] In one embodiment, the motor 2 is connected to the conveyor through a lifting device. The lifting device located above the conveyor can drive the motor 2 to move upward along the central axis of the motor 2 so that the box opening at the upper end of the water absorption box is close to the lower surface of the upper end of the annular porous rubber belt.

[0013] In one embodiment, a slide cylinder is coaxially tightly sleeved outside the motor, and the slide cylinder is slidably connected to the lifting device. The lifting device is located inside the slide cylinder, and a slewing ring is coaxially rotatably installed outside the slide cylinder. The slewing ring is fixedly connected to the lower end of the diagonal support rod, and the upper end of the diagonal support rod is fixedly connected to the water absorption box.

[0014] In one embodiment, a mounting plate is provided at the lower end of the water absorption box, a linear motor is installed on the mounting plate, the linear motor is connected to the water absorption box, and the water absorption box is driven to move on the mounting plate by the linear motor, and the moving direction is perpendicular to the central axis of the motor 2; The mounting plate is fixedly connected to the output shaft or the swivel seat of the second motor, and the upper end of the diagonal support rod is fixedly connected to the mounting plate.

[0015] In one embodiment, the mounting plate on one of the water absorbing devices is spaced apart from the swivel seat on another adjacent water absorbing device.

[0016] In one embodiment, the water suction boxes of two adjacent water suction devices located above the conveyor are in close contact.

[0017] In one embodiment, a sealing gasket is provided at the box opening of the water absorption box.

[0018] Beneficial effect: The vacuum belt filter for preparing tungsten trioxide in the present application improves the conventional sliding sealing connection form commonly used between the porous rubber belt and the water absorption box into a static sealing connection form, which greatly enhances the sealing effect between the porous rubber belt and the water absorption box, has a long static sealing life, and has reliable and durable sealing performance, which effectively meets the demand for further improving the working vacuum degree of the vacuum belt filter, does not cause a significant increase in operating costs due to air leakage, and subsequently reduces WO in APT. 3 After removing the excess content, it can effectively reduce costs and increase profits for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a vacuum belt filter for preparing tungsten trioxide according to the present invention; Figure 2 is a front view of the water absorbing device of the present invention; Figure 3 It is a left side view of the water absorbing device of the present invention; Figure 4 is a top view of the water absorbing device of the present invention; Figure 5 It is the internal structure diagram of the water absorbing device of the present invention.

[0021] The following are the descriptions of the reference numerals: 1. Annular porous rubber belt; 2. Filter cloth; 3. Connecting rod; 4. Mounting frame; 5. Rotating shaft; 6. Belt roller; 7. Transmission belt; 8. Motor 1; 9. Annular slide rail; 10. Annular slideway; 11. Insulating mounting rod; 12. Conductive ring; 13. Mounting block; 14. Sliding block; 15. Power receiving pole; 16. Slide cylinder; 17. Lifting device; 18. Motor 2; 19. Rotating seat; 20. Bearing; 21. Mounting plate; 22. Diagonal support rod; 23. Rotating ring; 24. Water absorption box; 25. Sealing pad; 26. Mounting groove; 27. Linear motor; 28. Vacuum pump; 29. ​​Suction pipe; 30. Air-water separator; 31. Displacement sensor; 32. Controller; 33. Control valve; a. Water absorption device 1; b. Water absorption device 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] The present invention proposes a vacuum belt filter for preparing tungsten trioxide. The vacuum belt filter for preparing tungsten trioxide improves the conventional sliding sealing connection form commonly used between the porous rubber belt and the water absorption box 24 into a static sealing connection form, which greatly enhances the sealing effect between the porous rubber belt and the water absorption box 24, has a long static sealing life, and has reliable and durable sealing performance, effectively meeting the need to further improve the working vacuum degree of the vacuum belt filter, and does not cause a significant increase in operating costs due to air leakage, and subsequently reduces WO in APT. 3After removing the excess content, it can effectively reduce costs and increase profits for enterprises.

[0027] Specifically, in one embodiment of the invention, Figure 1 As shown, the vacuum belt filter for preparing tungsten trioxide comprises an annular porous rubber belt 1 and a filter cloth 2 attached to the upper surface of the upper end of the annular porous rubber belt 1. The annular porous rubber belt 1 and the filter cloth 2 are one of the important structural components of a conventional vacuum belt filter. The structure of a conventional vacuum belt filter belongs to the prior art, such as that shown in the patent with publication number CN221999117U. Therefore, this article will not introduce other components of the vacuum belt filter except the annular porous rubber belt 1 and the filter cloth 2 (such as a slurry throwing bucket, a driving roller for driving the annular porous rubber belt 1 to rotate, a rinsing bucket, a tensioning mechanism, a deviation correction device, a scraper mechanism, a water receiving box, etc.) in detail. Figure 1 In order to conveniently demonstrate the content of the present invention, the vacuum belt filter shown in the accompanying drawings only shows the annular porous rubber belt 1 and the filter cloth 2, and other components are omitted. However, these omitted components are also indispensable components of the vacuum belt filter of the present invention. It is only because these omitted components belong to the conventional design structure of the conventional vacuum belt filter that this article and the appendix are not included in the description. Figure 1 No need for detailed introduction and demonstration.

[0028] In this embodiment, if Figure 1 As shown, when the vacuum belt filter is working, the annular porous rubber belt 1 is pressed Figure 1 The inner side of the annular porous rubber belt 1 is provided with a conveyor, and a plurality of water absorbing devices are arranged on the conveyor along the conveying direction, such as Figure 1 The water absorbing device 1 marked as a and the water absorbing device 2 marked as b, the conveying direction of the conveyor is as follows Figure 1 As shown by the middle arrow, the water absorption device located above the conveyor moves along the moving direction of the upper end of the annular porous rubber belt 1 driven by the conveyor. With this design, when the conveying speed of the conveyor is the same as the moving speed of the annular porous rubber belt 1, the water absorption device is close to the annular porous rubber belt 1 and the two move synchronously. The water absorption device and the annular porous rubber belt 1 remain relatively still, that is, the two are statically sealed and connected to achieve reliable sealing, which greatly enhances the sealing effect of the porous rubber belt and the water absorption box 24. The static seal has a long service life and reliable and long-lasting sealing performance, which effectively meets the demand for further improving the working vacuum degree of the vacuum belt filter, does not cause a significant increase in operating costs due to air leakage, and subsequently reduces WO in APT. 3 After removing the excess content, it can effectively reduce costs and increase profits for enterprises.

[0029] The water absorbing device according to various embodiments is described in detail below. Example

[0030] like Figure 1-Figure 5 As shown, the water absorption device at least includes: a motor 18, a water absorption box 24, and a vacuum pump 28. The motor 18 is connected to the conveyor, and the conveyor drives the motor 18 to move. Figure 1 As shown, the central axis of the motor 2 18 located above the conveyor is perpendicular to the upper end surface of the annular porous rubber belt 1, that is, when the upper end surface of the annular porous rubber belt 1 is horizontal, the central axis of the motor 2 18 is vertical.

[0031] In this embodiment, if Figure 1-Figure 5 As shown, the water absorption box 24 is located above the motor 18, and the water absorption box 24 is connected to the output shaft of the motor 18. The motor 18 drives the water absorption box 24 to rotate around the motor 18. The water absorption box 24 is open, as shown in FIG. Figure 1 As shown, the water absorption box 24 located above the conveyor is arranged horizontally, and the box mouth of the upper end of the water absorption box 24 located above the conveyor is close to the lower surface of the upper end of the annular porous rubber belt 1 and moves at the same speed, so that the porous rubber belt and the water absorption box 24 remain relatively still, that is, the two are statically sealed and connected, and the seal is reliable, which greatly enhances the sealing effect of the porous rubber belt and the water absorption box 24, and the static seal has a long service life, and the sealing performance is reliable and durable, which effectively meets the demand for further improving the working vacuum degree of the vacuum belt filter, and does not cause a significant increase in operating costs due to air leakage, and subsequently reduces WO in APT. 3 After removing the excess content, it can effectively reduce costs and increase profits for enterprises.

[0032] Specifically, Figure 1-Figure 5 As shown, the water absorption box 24 and the output shaft of the motor 2 18 are fixedly connected through the swivel seat 19, and the rotation center line of the motor 2 18 driving the water absorption box 24 to rotate does not contact the water absorption box 24. With this design, during the process of the conveyor driving the water absorption device to rotate, the water absorption device will not violently collide with the annular porous rubber belt 1, will not push the upper end of the annular porous rubber belt 1 upward, will not damage the annular porous rubber belt 1, and ensure the safety of the annular porous rubber belt 1 and the filter cloth 2.

[0033] In this embodiment, if Figure 1-Figure 5 As shown, the vacuum pump 28 is connected to the interior of the water suction box 24 through the suction pipe 29. Figure 5 As shown, the air suction pipe 29 is also connected to the air-water separator 30, and the air-water separator 30 is installed inside the water suction box 24. The working process is as follows Figure 1 As shown, the water absorption box 24 located above the conveyor is arranged horizontally, and the box mouth at the upper end of the water absorption box 24 located above the conveyor is close to the lower surface of the upper end of the annular porous rubber belt 1 and moves at the same speed. The porous rubber belt and the water absorption box 24 remain relatively still, that is, the two are statically sealed and connected. The water absorption box 24 located above the conveyor is driven by the conveyor to press Figure 1During the movement in the direction indicated by the middle arrow, the vacuum pump 28 is started to extract the air in the water absorption box 24. Since the box opening at the upper end of the water absorption box 24 located above the conveyor is in close contact with the lower surface of the upper end of the annular porous rubber belt 1 and moves at the same speed, the two are statically sealed and connected, so the free moisture in the wet APT on the filter cloth 2 is forced to pass through the filter cloth 2 and the annular porous rubber belt 1 downward in sequence and then enter the water absorption box 24. The setting of the air-water separator 30 allows air to enter the suction pipe 29, and the moisture remains in the water absorption box 24. After the box opening at the upper end of the water absorption box 24 is in close contact with the lower surface of the upper end of the annular porous rubber belt 1 and moves at the same speed for a distance, the free moisture in the wet APT on the filter cloth 2 located directly above the water absorption box 24 is absorbed cleanly. At the same time, the water absorption box 24 also moves to Figure 1 Next, the conveyor drives the water absorption box 24 to rotate downward and separate from the lower surface of the upper end of the annular porous rubber belt 1. The rotation direction of the water absorption box 24 is as follows: Figure 1 As shown by the arrow in the middle, during the downward rotation of the water absorption box 24, the control motor 18 drives the water absorption box 24 to rotate 180 degrees around the motor 18, so that Figure 1 The water suction device at the far right end above the middle conveyor becomes Figure 1 The water absorbing device 2 at the rightmost end below the middle conveyor is designed so that the subsequent water absorbing device 2 can smoothly rotate upward under the drive of the conveyor and realize that the box opening at the upper end of the water absorbing box 24 above the conveyor is close to the lower surface of the upper end of the annular porous rubber belt 1 and moves at the same speed. Figure 1 As shown, the water absorbing device 2 at the rightmost end below the conveyor moves to the leftmost end below the conveyor driven by the conveyor, and then the conveyor drives the water absorbing device 2 to rotate upward. Compared with the water absorbing device 1, the water absorbing device 2 will not violently collide with the annular porous rubber belt 1 when rotating upward, thereby ensuring that the water absorbing device can smoothly rotate upward under the drive of the conveyor and realize that the box mouth of the upper end of the water absorbing box 24 is close to the lower surface of the upper end of the annular porous rubber belt 1 and moves at the same speed again. The water absorbing device 2 rotates upward to Figure 1 The leftmost end above the middle conveyor, and after the box opening of the upper end of the water absorption box 24 is again moved at the same speed close to the lower surface of the upper end of the annular porous rubber belt 1, the control motor 2 18 drives the water absorption box 24 to rotate 180 degrees in the opposite direction to return to the water absorption device 1, and then the water absorption device 1 moves horizontally from left to right above the conveyor; In addition, there is wet APT on the filter cloth 2 directly above the water absorption device 1, and there is no wet APT on the filter cloth 2 directly above the water absorption device 2 at the upper left end of the conveyor, that is, after the motor 2 18 drives the water absorption box 24 of the water absorption device 2 to rotate 180 degrees in the opposite direction and return to the water absorption device 1, there is wet APT on the filter cloth 2 directly above the water absorption device 1, and then the vacuum pump 28 is started to extract the free water in the wet APT. Figure 1After the water absorption device at the rightmost end above the middle conveyor rotates downward, the water in the water absorption box 24 of the water absorption device naturally flows out from the box mouth. Therefore, in a vacuum belt filter for preparing tungsten trioxide in this embodiment, a water receiving box is also required to be arranged directly above the conveyor to receive the water poured out of the water absorption box 24.

[0034] In the water absorbing device of this embodiment, Figure 1 As shown, when the water absorption device 1 rotates downward driven by the conveyor and separates from the lower surface of the upper end of the annular porous rubber belt 1, the water absorption device 1 will not violently collide with the annular porous rubber belt 1, and will not push the upper end of the annular porous rubber belt 1 upward; when the water absorption device 2 subsequently rotates upward driven by the conveyor and contacts with the lower surface of the upper end of the annular porous rubber belt 1 again, the water absorption device 2 will not violently collide with the annular porous rubber belt 1, and will not push the upper end of the annular porous rubber belt 1 upward. Therefore, a motor 2 18 is provided to timely control the water absorption box 24 to rotate 180 degrees in forward and reverse directions as needed to switch between the water absorption device 1 and the water absorption device 2, so as to ensure that the water absorption device can smoothly contact and separate from the lower surface of the upper end of the annular porous rubber belt 1, does not push the upper end of the annular porous rubber belt 1 upward, does not damage the annular porous rubber belt 1, and ensures the safety of the annular porous rubber belt 1 and the filter cloth 2.

[0035] In this embodiment, if Figure 1 As shown, the water absorption boxes 24 of the two adjacent water absorption devices on the left and right above the conveyor are in close contact. This design allows all the wet APT on the filter cloth 2 to be acted upon by the water absorption boxes 24 without any omission, thereby ensuring the vacuum filtration effect of the wet APT.

[0036] Further, such as Figure 1-Figure 5 As shown, the box opening of the water absorption box 24 is provided with a sealing gasket 25, and the provision of the sealing gasket 25 can enhance the sealing effect of the box opening at the upper end of the water absorption box 24 located above the conveyor closely against the lower surface of the upper end of the annular porous rubber belt 1. Example

[0037] The difference between this embodiment and the first embodiment is that: Figure 1-Figure 5As shown, the motor 2 18 is connected to the conveyor through the lifting device 17. The lifting device 17 located above the conveyor can drive the motor 2 18 to move upward along the central axis of the motor 2 18 so that the box mouth of the upper end of the water absorption box 24 is close to the lower surface of the upper end of the annular porous rubber belt 1, that is, after the water absorption device is driven to the top of the conveyor, the water absorption device is not in direct contact with the lower surface of the upper end of the annular porous rubber belt 1, but it is necessary to control the lifting device 17 to lift the water absorption box 24 so that the box mouth of the upper end of the water absorption box 24 is close to the lower surface of the upper end of the annular porous rubber belt 1 to achieve a static sealing connection between the two. Compared with the first embodiment, this design structure is different from the first embodiment in which the water absorption device is driven to the top of the conveyor by the conveyor. After the water absorption device is driven to the top of the conveyor, the water absorption device is directly in contact with the annular porous rubber The design form of contact between the lower surface of the upper end of the belt 1 can, firstly, further prevent the conveyor from colliding with the annular porous rubber belt 1 during the rotation of the water absorption device, ensure that the water absorption device will not push the upper end of the annular porous rubber belt 1 upward, and ensure the absolute safety of the annular porous rubber belt 1 and the water absorption device. Secondly, it can prevent the water absorption box 24 from colliding with the adjacent water absorption boxes 24 around it during the process of the motor 2 18 driving the water absorption box 24 to rotate around the motor 2 18. Therefore, in the process of the motor 2 18 driving the water absorption box 24 to rotate around the motor 2 18, it is also necessary to control the lifting device 17 to drive the motor 2 18 to move and adjust the position of the water absorption box 24 along the central axis of the motor 2 18 to avoid the water absorption box 24 colliding with the adjacent water absorption boxes 24 around it during the rotation.

[0038] Further, such as Figure 1-Figure 5 As shown, the motor 18 is coaxially tightly sleeved with a slide 16, the slide 16 is slidably connected to the lifting device 17, the lifting device 17 is located in the slide 16, the slide 16 is coaxially rotatably installed with a slewing ring 23, the slewing ring 23 is fixedly connected to the lower end of the diagonal support rod 22, and the upper end of the diagonal support rod 22 is fixedly connected to the end of the water absorption box 24 away from the motor 18. This design can lift Figure 1-Figure 5 The connection stability between the water absorption box 24 and the output shaft of the motor 2 18 in the water absorption device is avoided Figure 1-Figure 5 The end of the middle water absorption box 24 away from the motor 2 18 swings downward to ensure the static sealing effect between the lower surface of the water absorption box 24 and the upper end of the annular porous rubber belt 1.

[0039] Further, such as Figure 5 As shown, the body of the motor 2 18 and the swivel seat 19 are rotatably connected via a bearing 20. This design can improve the installation stability of the water absorption box 24 and prevent the water absorption box 24 from driving the swivel seat 19 to shake relative to the output shaft of the motor 2 18, thereby affecting the stability of the water absorption box 24 rotating around the motor 2 18.

[0040] Further, such as Figure 2As shown, a mounting plate 21 and a mounting groove 26 are provided at the lower end of the water absorption box 24, and a linear motor 27 is installed on the mounting plate 21. The linear motor 27 is located in the mounting groove 26 and is connected to the water absorption box 24. The water absorption box 24 is driven to move on the mounting plate 21 by the linear motor 27, and the moving direction is perpendicular to the central axis of the motor 18. The mounting plate 21 is fixedly connected to the output shaft or the rotating seat 19 of the motor 18, and the upper end of the diagonal support rod 22 is fixedly connected to the mounting plate 21. In this design, when the motor 18 drives the water absorption box 24 to rotate around the motor 18, the linear motor 27 can be controlled to drive the water absorption box 24 to move and adjust the position of the water absorption box 24 as needed to avoid collision between the water absorption box 24 and the adjacent water absorption boxes 24 during the rotation of the water absorption box 24.

[0041] In this embodiment, if Figure 1 As shown, the mounting plate 21 on one of the water absorbing devices is spaced apart from the rotating seat 19 on another adjacent water absorbing device. With this design, the other water absorbing device will not collide with the mounting plate 21 on one of the water absorbing devices when it rotates downward driven by the conveyor, thereby ensuring the safety of the water absorbing devices.

[0042] Specifically, Figure 1 As shown, the conveyor includes: a mounting frame 4, a slide rail, a conductive rod, a motor 8 and a displacement sensor 31. The mounting frame 4 is connected to the Figure 1 The other structural components of the vacuum belt filter not shown in the figure are connected to fix the mounting frame 4 so that the mounting frame 4 is fixed. At least one pair of belt rollers 6 are rotatably mounted on the mounting frame 4 through the rotating shaft 5. The belt rollers 6 are tightly sleeved with a transmission belt 7. The motor 8 is mounted on the mounting frame 4 and is transmission-connected to the rotating shaft 5 for driving the transmission belt 7 to rotate. A mounting block 13 is fixedly mounted on the transmission belt 7. A slider 14 is fixedly mounted on the mounting block 13. There are multiple mounting blocks 13. One mounting block 13 is fixedly connected to a motor 18 or a lifting device 17 of a water absorption device. The slide rail is fixedly connected to the mounting frame 4. The slider 14 is connected to the slide rail The two devices are connected by sliding, and the slider 14 is limited by the slide rail so that the mounting block 13 can move smoothly under the drive of the transmission belt 7. The conductive rod is insulated and fixedly connected to the mounting frame 4. The water absorption device also includes a power receiving rod 15. The power receiving rod 15 is in contact with the conductive rod for sliding to obtain electricity, so as to ensure the normal operation of the water absorption device. The displacement sensor 31 is used to detect the position of the mounting block 13 moved under the drive of the transmission belt 7, so that the controller 32 can timely control the motor 2 18, the lifting device 17, and the vacuum pump 28 to operate, so that the water absorption device can smoothly absorb the free water in the wet APT, smoothly rotate under the drive of the conveyor, and smoothly switch automatically between the water absorption device 1 and the water absorption device 2.

[0043] In this embodiment, when there is a pair of belt rollers 6, as shown in FIG. Figure 1As shown, at this time, the transmission belt 7 is annular, and correspondingly, the slide rail is also annular, forming an annular slide rail 9, and there is a pair of annular slide rails 9, which are arranged at intervals, so that an annular slideway 10 is defined between the pair of annular slide rails 9, and the annular slideway 10, the annular slide rail 9, and the annular transmission belt 7 are similar. In addition, at this time, the conductive rods are connected end to end to form a conductive ring 12, and are fixedly connected to the mounting frame 4 through the insulating mounting rod 11.

[0044] In this embodiment, if Figure 1 , Figure 2 and Figure 4 As shown, the power receiving pole 15 , the controller 32 , and the displacement sensor 31 that contacts the annular slide rail 9 to detect the position of the mounting block 13 are installed on the mounting block 13 .

[0045] In this embodiment, a control valve 33 is provided on the suction pipe 29, and the suction pipe 29 is controlled to be on and off by the control valve 33, which saves the trouble of frequently controlling the start and stop of the vacuum pump 28, and helps to extend the service life of the vacuum pump 28. When it is necessary to absorb the free water in the wet APT, the control valve 33 is opened, otherwise, the control valve 33 is closed. The opening and closing of the control valve 33 is automatically controlled by the controller 32 according to the position of the mounting block 13.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vacuum belt filter for preparing tungsten trioxide, comprising an annular porous rubber belt and a filter cloth attached to the upper surface of the upper end of the annular porous rubber belt, characterized in that: A conveyor is arranged on the inner side of the annular porous rubber belt, and a plurality of water absorbing devices are arranged on the conveyor along the conveying direction. The water absorbing devices located above the conveyor move along the moving direction of the upper end of the annular porous rubber belt driven by the conveyor; The water absorbing device comprises: Motor 2 is connected to the conveyor and drives the motor 2 to move through the conveyor. The central axis of the motor 2 located above the conveyor is perpendicular to the upper end surface of the annular porous rubber belt. The water absorption box is connected to the output shaft of the second motor, and the second motor drives the water absorption box to rotate around the second motor. The water absorption box is open, and the box opening at the upper end of the water absorption box located above the conveyor is close to the lower surface of the upper end of the annular porous rubber belt and moves at the same speed; The vacuum pump is connected with the interior of the water suction box through an air suction pipe. The air suction pipe is also connected with an air-water separator, and the air-water separator is installed inside the water suction box.

2. A vacuum belt filter for preparing tungsten trioxide according to claim 1, characterized in that: The conveyor comprises: A mounting frame, on which at least one pair of belt rollers is rotatably mounted via a rotating shaft, a transmission belt is tightly sleeved outside the belt rollers, a mounting block is fixedly mounted on the transmission belt, a slider is fixedly mounted on the mounting block, there are multiple mounting blocks, and one mounting block is fixedly connected to the second motor of a water suction device; A slide rail is fixedly connected to the mounting frame, and the slider is slidably connected to the slide rail; The conductive rod is fixedly connected to the mounting frame, and the water absorption device also includes a power receiving rod, and the power receiving rod is in sliding contact with the conductive rod to draw electricity; Motor 1 is mounted on the mounting frame and is connected to the rotating shaft; The displacement sensor is used to detect the position of the mounting block when it is moved by the transmission belt.

3. A vacuum belt filter for preparing tungsten trioxide as claimed in claim 1, characterized in that: The water absorption box and the output shaft of the second motor are fixedly connected via a swivel seat, and the rotation center line of the second motor driving the water absorption box to rotate does not contact the water absorption box.

4. A vacuum belt filter for preparing tungsten trioxide as claimed in claim 1 or 3, characterized in that: The second motor is connected to the conveyor through a lifting device. The lifting device located above the conveyor can drive the second motor to move upward along the central axis of the second motor so that the box opening at the upper end of the water absorption box is close to the lower surface of the upper end of the annular porous rubber belt.

5. A vacuum belt filter for preparing tungsten trioxide as claimed in claim 4, characterized in that: The motor is coaxially tightly sleeved with a slide cylinder, the slide cylinder is slidably connected to the lifting device, the lifting device is located in the slide cylinder, a slewing ring is coaxially rotatably installed outside the slide cylinder, the slewing ring is fixedly connected to the lower end of the diagonal support rod, and the upper end of the diagonal support rod is fixedly connected to the water absorption box.

6. A vacuum belt filter for preparing tungsten trioxide as claimed in claim 5, characterized in that: A mounting plate is provided at the lower end of the water absorption box, a linear motor is installed on the mounting plate, the linear motor is connected to the water absorption box, and the water absorption box is driven to move on the mounting plate by the linear motor, and the moving direction is perpendicular to the central axis of the motor 2; The mounting plate is fixedly connected to the output shaft or the swivel seat of the second motor, and the upper end of the diagonal support rod is fixedly connected to the mounting plate.

7. A vacuum belt filter for preparing tungsten trioxide as claimed in claim 6, characterized in that: The mounting plate on one of the water absorbing devices is spaced apart from the rotating seat on another adjacent water absorbing device.

8. A vacuum belt filter for preparing tungsten trioxide as claimed in claim 1, characterized in that: The water absorption boxes of two adjacent water absorption devices located above the conveyor are in close contact.

9. A vacuum belt filter for preparing tungsten trioxide as claimed in claim 1, characterized in that: The box opening of the water absorption box is provided with a sealing gasket.

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