Vertical disc filter

Abstract

The utility model provides a vertical disc type filter which comprises a support, a pressure-resistant cylinder is fixedly arranged on the support through a spring shock absorber, a filter disc group comprising at least one round filter disc is fixedly arranged in the pressure-resistant cylinder, a hollow cavity is formed in the center of the filter disc group, a hollow shaft is arranged in the hollow cavity, and the filter disc group comprises a plurality of round filter discs. The lower end of the hollow shaft is communicated with the hollow cavity, the upper end of the hollow shaft penetrates through the upper part of the pressure-resistant cylinder and is connected with a filtrate outlet, the hollow shaft below the filtrate outlet is connected with two vibration motors through a transmission plate, and a gas inlet is formed in the upper part of the pressure-resistant cylinder; a suspension liquid inlet and a residual liquid outlet are formed in the side wall of the lower portion of the pressure-resistant cylinder body, a filter cake discharging port is formed in the lower portion of the pressure-resistant cylinder body, and the device has the advantages of being compact in structure, small in occupied area, good in filtering effect, capable of discharging filter cakes in time and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering equipment, in particular to a vertical disc filter. Background Art

[0002] In industrial production, horizontal disc filter is an important filtering equipment, mainly used for dehydration of various suspended substances, especially in the pharmaceutical, food, biotechnology, petroleum and chemical industries. However, the commonly used horizontal disc filter has problems such as large footprint, high energy consumption and long filter cake discharge time. Summary of the invention

[0003] The problem to be solved by the utility model is to provide a vertical disc filter which has compact structure, small floor space, good filtering effect and can discharge filter cakes in time.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a vertical disc filter, including a bracket, a pressure-resistant cylinder is fixedly arranged on the bracket through a spring shock absorber, a filter disc group including at least one circular filter disc is fixedly arranged in the pressure-resistant cylinder, a hollow cavity is formed at the center of the filter disc group, a hollow shaft is arranged in the hollow cavity, the lower end of the hollow shaft is connected to the hollow cavity, the upper end of the hollow shaft passes through the upper part of the pressure-resistant cylinder and is connected to the filtrate outlet, two vibration motors are connected to the hollow shaft below the filtrate outlet through a transmission plate, a gas inlet is arranged above the pressure-resistant cylinder, a suspension inlet and a residual liquid outlet are arranged on the lower side wall of the pressure-resistant cylinder, and a filter cake discharge port is arranged below the pressure-resistant cylinder.

[0005] Furthermore, the filter disc assembly includes a plurality of support rings for fixing the circular filter discs, a sealing disc arranged under the lowest support ring, a connector arranged on the highest support ring, and a rod-shaped rod for fixing the support rings, the sealing disc and the connector in series.

[0006] Furthermore, the circular filter disc includes a toothed hub ring, a filter disc bottom plate fixedly arranged around the toothed hub ring, a support net fixedly arranged on the filter disc bottom plate and a filter cloth arranged on the support net, a gap for the filtered liquid to pass through is arranged between the filter disc bottom plate and the support net, a groove is arranged on the outer edge of the filter disc bottom plate, the outer edge of the filter cloth is fixed in the groove by a wire hoop, and a first positioning hole matching the rod-shaped rod is arranged on the toothed hub ring.

[0007] Furthermore, the filter disc bottom plate and the support net are provided with a downward slope in the outward extending direction of the toothed hub ring.

[0008] Furthermore, the support ring includes a support ring body, the support ring body is provided with a tooth structure matching the toothed hub ring, the support ring body is provided with a second positioning hole matching the rod-shaped rod, the hollow cavity is formed by stacking a plurality of the support ring bodies, and a gap two for the passage of filtered liquid is provided on the contact surface of two adjacent support ring bodies, and the gap one, gap two and the hollow cavity are connected.

[0009] Furthermore, a threaded hole corresponding to the rod-shaped rod is provided on one side of the connector that contacts the support ring, and the other side of the connector is fixedly connected to the pressure-resistant cylinder via a flange.

[0010] Furthermore, the rod-shaped rod comprises a rod body, one side of the rod body is provided with a conical thread head matching the threaded hole, and the other side of the rod body is provided with an internal threaded hole.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] 1. The vertical disc filter of the utility model is provided with a filter disc group formed by stacking a plurality of circular filter discs and a support ring inside a pressure-resistant cylinder, and a hollow shaft is provided in a hollow cavity formed by stacking the support rings. After the suspension fills the entire pressure-resistant cylinder through the suspension inlet, compressed gas is introduced into the gas inlet. Under the action of pressure, the suspension is filtered by the filter disc group and enters the hollow cavity and then enters the hollow shaft and is discharged at the filtrate outlet. The whole equipment adopts a vertical structure, the equipment structure is compact, and the floor space is small. In addition, the filter disc group structure provided achieves a good filtering effect by stacking a plurality of circular filter discs.

[0013] 2. After the vertical disc filter of the utility model completes the filtration, the vibration motor is turned on, the disc group vibrates, and at the same time, the filter cake on the circular filter disc is reversely swept by introducing low-pressure gas through the filtrate channel at the gas inlet, so that the filter cake cracks and falls into the bottom of the pressure-resistant cylinder and leaves at the filter cake outlet, so that the filter cake can be discharged in time, thereby improving the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the top view of the structure of a vertical disc filter of the utility model.

[0015] Figure 2 yes Figure 1 Schematic diagram of the structure of the AA section.

[0016] Figure 3 The utility model is a side view structural schematic diagram of a circular filter disc of a vertical disc filter.

[0017] Figure 4The utility model is a schematic diagram of the structure of a circular filter disc of a vertical disc filter and a schematic diagram of the flow direction of compressed gas during filtering.

[0018] Figure 5 The utility model is a schematic diagram of the gas flow direction when the filter cake is discharged after filtering by a circular filter disc of a vertical disc filter.

[0019] Figure 6 The utility model is a structural schematic diagram of a support ring of a vertical disc filter.

[0020] Figure 7 yes Figure 6 Schematic diagram of the structure of the BB section.

[0021] Figure 8 The utility model is a schematic diagram of the partial assembly structure of a circular filter disc and a support ring of a vertical disc filter.

[0022] Fig. 9 The utility model is a structural schematic diagram of a rod-shaped rod of a vertical disc filter.

[0023] Fig.10 The utility model is a schematic diagram of the filtrate flow direction of a filter disc group of a vertical disc filter.

[0024] In the figure: 1- bracket; 2- spring shock absorber; 3- pressure-resistant cylinder; 4- round filter disc; 5- filter disc group; 6- hollow cavity; 7- hollow shaft; 8- filtrate outlet; 9- transmission plate; 10- vibration motor; 11- gas inlet; 12- suspension inlet; 13- residual liquid outlet; 14- filter cake outlet; 15- support ring; 16- blocking disc; 17- connector; 18- rod-shaped rod; 19- toothed hub ring; 20- filter disc bottom plate; 21- support net; 22- filter cloth; 23- gap one; 24- groove; 25- wire hoop; 26- first positioning hole; 27- support ring body; 28- tooth structure; 29- second positioning hole; 30- gap two; 31- flange; 32- rod body; 33- conical thread head; 34- internal thread hole. DETAILED DESCRIPTION

[0025] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-Figure 10As shown, a vertical disc filter comprises a bracket 1, on which a pressure-resistant cylinder 3 is fixedly arranged through a spring shock absorber 2, a filter disc group 5 including at least one circular filter disc 4 is fixedly arranged in the pressure-resistant cylinder 3, a hollow cavity 6 is formed at the center of the filter disc group 5, a hollow shaft 7 is arranged in the hollow cavity 6, the lower end of the hollow shaft 7 is connected to the hollow cavity 6, the upper end of the hollow shaft 7 passes through the upper part of the pressure-resistant cylinder 3 and is connected to a filtrate outlet 8, and two vibration motors 10 are connected to the hollow shaft 7 below the filtrate outlet 8 through a transmission plate 9, and the two vibration motors 10 are at a certain angle The degree of setting can make the filter disc group 5 vibrate in both horizontal and vertical directions, which is convenient for the filter cake to crack and discharge. A gas inlet 11 is arranged above the pressure-resistant cylinder 3, and the gas inlet 11 is used to introduce compressed air. A suspension inlet 12 and a residual liquid outlet 13 are arranged on the lower side wall of the pressure-resistant cylinder 3. A filter cake discharge port 14 is arranged below the pressure-resistant cylinder 3, and a discharge valve is installed at the filter cake discharge port 14. When filtering, the discharge valve is closed, and when discharging the filter cake, the discharge valve is opened. The bracket 1 and the pressure-resistant cylinder 3 are connected by a spring shock absorber 2, which plays a shock-absorbing and buffering role when vibrating to remove the filter cake.

[0027] Furthermore, the filter disc group 5 includes a plurality of support rings 15 for fixing the circular filter disc 4, a sealing disc 16 arranged under the lowest support ring 15, a connector 17 arranged on the uppermost support ring 15, and a rod 18 for fixing the support ring 15, the sealing disc 16 and the connector 17 in series.

[0028] Specifically, Figure 2 and Figure 8As shown, the assembly structure of the support ring 15 and the circular filter disc 4 is as follows: a toothed hub ring 19 is provided on the circular filter disc 4, and a tooth structure 28 matching the toothed hub ring 19 is provided on the support ring 15. The tooth structure 28 on the support ring 15 is clamped with the toothed hub ring 19. A support ring 15 and a circular filter disc 4 are clamped to form an assembly group. Then, after a plurality of assembly groups are spliced, the centers of a plurality of support rings 15 form a hollow cavity 6. A sealing disk 16 is installed below the hollow cavity 6, and a connector 17 is installed above the hollow cavity 6. The other side of the connector 17 is fixedly connected to the pressure-resistant cylinder 3 through a flange 31. Since a first positioning hole 26 is provided on the toothed hub ring 19, A second positioning hole 29 is provided on the support ring 15, and a threaded hole (not shown) is provided on the connecting head 17. The first positioning hole 26, the second positioning hole 29 and the threaded hole all correspond to each other. Then, one end of the conical threaded head 33 of the rod-shaped rod 18 passes through the sealing disk 16 and alternately passes through the first positioning hole 26 and the second positioning hole 29, and is threadedly connected to the threaded hole. The lower end of the rod-shaped rod 18 is threadedly connected to the internal threaded hole 34 by a bolt, thereby fixing the various structures of the filter disk group 5 together. In addition, a plug is provided on the sealing disk 16 to facilitate the discharge of internal media during maintenance. The number of the rod-shaped rods 18 is set to 4, which can better fix the filter disk group 5.

[0029] like Figure 3-5 As shown, the circular filter disc 4 includes a toothed hub ring 19, a filter disc bottom plate 20 fixedly arranged around the toothed hub ring 19, a support net 21 fixedly arranged on the filter disc bottom plate 20 and a filter cloth 22 arranged on the support net 21, a gap 23 for the filtrate to pass through is arranged between the filter disc bottom plate 20 and the support net 21, a groove 24 is arranged on the outer edge of the filter disc bottom plate 20, the outer edge of the filter cloth 22 is fixed in the groove 24 by a wire hoop 25, and the side of the filter cloth 22 close to the toothed hub ring 19 is fixed between the tooth structure 28 of the support ring 15 and the toothed hub ring 19, so as to fix the filter cloth 22.

[0030] Specifically, Fig.10 As shown, the filtrate flow process of the suspension filtration is: the gap one 23, the gap two 30, the hollow cavity 6 and the hollow shaft 7 form a filtrate channel. After the suspension is filtered through the filter cloth 22, the filtrate enters the gap two 30 formed between the two support rings 15 through the gap one 23 between the filter disc bottom plate 20 and the support net 21, and then enters the hollow cavity 6. Since the hollow shaft 7 is arranged in the hollow cavity 6, and the lower end of the hollow shaft 7 is connected to the hollow cavity 6, the filtrate enters the hollow shaft 7 and is discharged through the filtrate outlet 8, and the filtered residue remains on the filter cloth 22.

[0031] In addition, the filter disc bottom plate 20 is made of stainless steel, which has good corrosion resistance and long service life. The support net 21 is mainly provided to support the filter cloth 22 and to provide a sufficient gap 23 for the filtrate to flow out.

[0032] Furthermore, the filter disc bottom plate 20 and the support net 21 are provided with a downward slope in the direction in which the toothed hub ring 19 extends outward, such as Figure 3 As shown, the circular filter disc 4 is arranged to be tilted outward and downward from the center, so that after the filtering is completed, the filter cake attached to the filter cloth 22 will crack and fall off, thereby facilitating the discharge of the filter cake.

[0033] The working process of a vertical disc filter of the utility model is as follows: first, the suspension enters at the suspension inlet 12 and fills the entire pressure-resistant cylinder 3, and the compressed gas enters at the gas inlet 11. At this time, except for the filtrate outlet 8 on the pressure-resistant cylinder 3 being opened and the compressed gas continuously entering the gas inlet 11, the other inlets and outlets are all in a closed state. Figure 4 As shown, the compressed gas presses the suspension pressure onto the surface of the circular filter disc 4. After being filtered by the filter cloth 22, the filtrate flows through the gap 1 23 and the gap 2 30 under the action of the gas pressure into the hollow cavity 6, and enters the hollow shaft 7 from the bottom of the hollow cavity 6, and then is discharged from the filtrate outlet 8 above the hollow shaft 7. Because only the filtrate outlet 8 is open during filtration, the running and discharge direction of the compressed gas is in the direction of the filtrate outlet 8. Under the action of the gas pressure, the filtrate is easily discharged. After the filtration is completed, the residual liquid is discharged from the residual liquid outlet 13, the filter cake adheres to the filter cloth 22, the filtrate outlet 8 is closed, and the filter cake discharge port 14 is opened. At this time, except that the filter cake discharge port 14 is opened and the gas inlet 11 continuously enters the compressed air, the other inlets and outlets are in a closed state, and the vibration motor 10 is turned on to make the filter disc group 5 vibrate in both horizontal and vertical directions. At the same time, as shown in FIG. Figure 5 As shown, since only the filter cake discharge port 14 is open, the compressed gas flows toward the filter cake discharge port 14, and the gas flows through the filtrate channel to reversely sweep the filter cake, causing the filter cake to crack, pass over the edge of the circular filter disc 4 and fall into the bottom of the pressure-resistant cylinder 3, and the filter cake is discharged from the filter cake discharge port 14, thereby completing the filtration work.

[0034] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A vertical disc filter, characterized in that: The filter mechanism comprises a support, on which a pressure-resistant cylinder is fixedly arranged via a spring shock absorber, a filter disc group comprising at least one circular filter disc is fixedly arranged in the pressure-resistant cylinder, a hollow cavity is formed at the center of the filter disc group, a hollow shaft is arranged in the hollow cavity, the lower end of the hollow shaft is communicated with the hollow cavity, the upper end of the hollow shaft passes through the upper part of the pressure-resistant cylinder and is connected with a filtrate outlet, two vibration motors are connected to the hollow shaft below the filtrate outlet via a transmission plate, a gas inlet is arranged above the pressure-resistant cylinder, a suspension inlet and a residual liquid outlet are arranged on the lower side wall of the pressure-resistant cylinder, and a filter cake discharge port is arranged below the pressure-resistant cylinder.

2. A vertical disc filter according to claim 1, characterized in that: The filter disc assembly comprises a plurality of support rings for fixing the circular filter discs, a sealing disc arranged under the lowest support ring, a connector arranged on the highest support ring, and a rod-shaped rod for fixing the support rings, the sealing disc and the connector in series.

3. A vertical disc filter according to claim 2, characterized in that: The circular filter disc includes a toothed hub ring, a filter disc bottom plate fixedly arranged around the toothed hub ring, a support net fixedly arranged on the filter disc bottom plate and a filter cloth arranged on the support net, a gap for the filtered liquid to pass through is arranged between the filter disc bottom plate and the support net, a groove is arranged on the outer edge of the filter disc bottom plate, the outer edge of the filter cloth is fixed in the groove by a wire hoop, and a first positioning hole matching the rod-shaped rod is arranged on the toothed hub ring.

4. A vertical disc filter according to claim 3, characterized in that: The filter disc bottom plate and the support net are provided with a downward slope in the direction in which the toothed hub ring extends outward.

5. A vertical disc filter according to claim 3, characterized in that: The support ring includes a support ring body, the support ring body is provided with a tooth structure matching the toothed hub ring, the support ring body is provided with a second positioning hole matching the rod-shaped rod, the hollow cavity is formed by stacking a plurality of the support ring bodies, and a gap two for the passage of filtered liquid is provided on the contact surface of two adjacent support ring bodies, and the gap one, gap two and the hollow cavity are connected.

6. A vertical disc filter according to claim 2, characterized in that: A threaded hole corresponding to the rod-shaped rod is arranged on one side of the connector that contacts the support ring, and the other side of the connector is fixedly connected to the pressure-resistant cylinder through a flange.

7. A vertical disc filter according to claim 6, characterized in that: The rod-shaped rod comprises a rod body, one side of the rod body is provided with a conical thread head matching the threaded hole, and the other side of the rod body is provided with an internal threaded hole.

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