Filter pressing device for potassium nitrate production

Abstract

The utility model relates to a filter pressing device for potassium nitrate production, belongs to the technical field of potassium nitrate production, and solves the technical problem that a filtering mechanism in an existing filter pressing device is relatively complicated to disassemble and subsequently install. The device comprises a base and a plurality of filtering assemblies. The multiple filtering assemblies are arranged on the base in the first direction. The filtering assembly comprises a mounting frame, two sliding seats and two buckle assemblies. The interior of the mounting frame is used for mounting an air bag, and the mounting frame is provided with two first side faces in the second direction and a step face connected with the two first side faces. The two sliding seats are located on the two opposite sides of the mounting frame in the second direction correspondingly. The slide is configured to reciprocate in a first direction relative to the base. The two buckle assemblies are rotationally arranged on the two sliding seats correspondingly and are each of a bent structure. In the gravity direction, one parts of the two buckle assemblies are clamped between the two step faces and the two sliding seats correspondingly, so that the other parts of the two buckle assemblies abut against the two first side faces correspondingly.

Description

Technical Field

[0001] The utility model belongs to the technical field of potassium nitrate production, and particularly relates to a pressure filtration device for potassium nitrate production. Background Art

[0002] Potassium nitrate is a chemical substance with the chemical formula KNO3, which is commonly used in fields such as gunpowder, fertilizers, and food additives. In the production process of potassium nitrate, the double decomposition reaction of agricultural potassium chloride (potassium fertilizer) and ammonium nitrate (nitrate nitrogen fertilizer) is adopted to generate potassium nitrate and by-product agricultural ammonium chloride. The semi-finished product is washed after cooling crystallization. After the washing is completed, it is redissolved by crude nitrate, and then ammonium chloride needs to be removed by pressure filtration. Therefore, the pressure filtration device is an essential device for the potassium nitrate production line.

[0003] In the prior art, a chamber filter press provided by the publication number CN101780346A is used, which includes a frame, a cross beam arranged on the frame, a chamber filtration mechanism installed on the cross beam, and an oil pressure mechanism connected to the cross beam at one end of the cross beam. The feature is that the cross beam is a hollow square tube.

[0004] However, the following problems still exist in this forming plate for papermaking:

[0005] The chamber filtration mechanism is installed on the cross beam by means of screw connection. When components in the filtration mechanism (such as flexible parts like air bags that are prone to damage) are damaged, the disassembly and subsequent installation of the filtration mechanism are relatively cumbersome, increasing the downtime caused by component damage and reducing the production efficiency of potassium nitrate. Summary of the Utility Model

[0006] A pressure filtration device for potassium nitrate production provided by the utility model is used to solve the technical problem that the disassembly and subsequent installation of the filtration mechanism in the pressure filtration device for potassium nitrate production in the prior art are relatively cumbersome.

[0007] The utility model is realized by the following technical solutions: A pressure filtration device for potassium nitrate production includes:

[0008] A base;

[0009] A plurality of filtration components arranged on the base along a first direction;

[0010] Among them, the filtration component includes:

[0011] An installation frame for installing an air bag inside. In a second direction, the installation frame has two opposite first side surfaces, and in the gravity direction, the installation frame has two step surfaces facing the base;

[0012] Two sliding seats located on opposite sides of the installation frame in the second direction, and the sliding seats are configured to reciprocate along the first direction relative to the base;

[0013] The two snap-fit ​​components are rotatably disposed on the two slides, and both are bent structures. Along the direction of gravity, a portion of the two snap-fit ​​components is clamped between the two step surfaces and the two slides, so that the other portions of the two snap-fit ​​components are respectively in contact with the two first side surfaces, and the first direction, the second direction and the direction of gravity are perpendicular to each other.

[0014] Optionally, in order to better implement the utility model, the first side surface has a first groove;

[0015] The buckle assembly includes a main body and a first boss. The main body has a bend, which is rotatably mounted on a slide. The main body has a first surface for abutting against a first side surface. The first boss protrudes from the first surface. When the first surface abuts against the first side surface, the first boss is embedded in the first groove.

[0016] Optionally, in order to better implement the present invention, the side surface of the first boss away from the body is a curved surface, and the center of curvature of the curved surface is located on the side of the first boss close to the body.

[0017] Optionally, in order to better implement the present invention, the buckle assembly further includes an elastic member, the body has a second surface perpendicular to the first surface, and the elastic member is arranged on the second surface and is used to abut against the step surface.

[0018] Optionally, in order to better implement the utility model, the buckle assembly further includes:

[0019] The handle is arranged on the body along the second direction and located at one end of both sides of the installation frame.

[0020] Optionally, in order to better implement the utility model, the filter assembly further includes:

[0021] The hanging ring and the mounting frame have a second side surface away from the step surface along the gravity direction, and the hanging ring is arranged on the second side surface.

[0022] Optionally, in order to better implement the utility model, the base includes:

[0023] Two brackets are arranged along a first direction;

[0024] Two guide rails, both ends of which are respectively arranged on two brackets, the two guide rails are arranged along the second direction, and two slide seats in the filter assembly are respectively slidably arranged on the two guide rails;

[0025] The driving member is arranged on any one of the brackets, and is configured to cooperate with another bracket to compress the multiple filter components along a first direction.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] A pressure filtration device for potassium nitrate production provided by the present utility model includes a base and a plurality of filtration components. The plurality of filtration components are arranged on the base along a first direction. Among them, the filtration component includes a mounting frame, two sliding seats, and two buckle components. The mounting frame is used for installing an airbag inside. In a second direction, the mounting frame has two first side faces arranged oppositely. In the direction of gravity, the mounting frame has two step faces facing the base. The two sliding seats are respectively located on opposite sides of the mounting frame in the second direction. The sliding seat is configured to reciprocate relative to the base along the first direction. The two buckle components are respectively rotatably arranged on the two sliding seats and are both bent structures. Along the direction of gravity, a part of the two buckle components is respectively clamped between the two step faces and the two sliding seats, so that the other parts of the two buckle components are respectively abutted against the two first side faces. The first direction, the second direction, and the direction of gravity are perpendicular to each other pairwise.

[0028] With the above structure, the filtration component in the pressure filtration device for potassium nitrate production provided by the present utility model can be quickly disassembled and assembled. Specifically, when it is necessary to remove the mounting frame to replace and repair parts such as the airbag, an external force can be applied to the mounting frame by a traveling crane, so that the gravity of the mounting frame is no longer applied to a part of the buckle component, thereby causing the other part of the buckle component to no longer abut against the mounting frame, and further enabling the mounting frame to be taken out from the base.

[0029] When it is necessary to install the mounting frame, first, arrange the two sliding seats along the second direction, and rotate the other parts of the buckle components in a direction away from each other to facilitate the insertion of the mounting frame into the gap between the two buckle components in the second direction. Subsequently, the step faces of the mounting frame are respectively abutted against a part of the two buckle components, so that the other parts of the two buckle components rotate in a direction close to each other to abut against the two first side faces, so that the mounting frame drives the buckle component to lock itself by its own gravity.

[0030] In summary, the filtration component in the pressure filtration device for potassium nitrate production provided by the present utility model can be quickly disassembled and assembled. Thereby reducing the downtime caused by component damage and improving the production efficiency of potassium nitrate. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic structural diagram of a pressure filtration device for potassium nitrate production provided by an embodiment of the present utility model;

[0033] Figure 2 is Figure 1 the A-A cross-sectional view in

[0034] Figure 3 is Figure 2 the B-B cross-sectional view in

[0035] Figure 4 is the cross-sectional view of the filtering component provided by the embodiment of the present utility model;

[0036] Figure 5 is the structural schematic diagram of the installation frame provided by the embodiment of the present utility model;

[0037] Figure 6 is the structural schematic diagram of the buckle component provided by the embodiment of the present utility model;

[0038] Figure 7 is Figure 3 the enlarged view at C in

[0039] In the figure:

[0040] 10 - base; 11 - bracket; 12 - guide rail; 13 - driving member; 14 - containing basin;

[0041] 20 - filtering component; 20A - accommodating cavity; 21 - installation frame; 21A - first side; 21B - step surface; 21C - second side; 21D - first groove; 21E - second groove; 211 - airbag; 211A - liquid inlet hole; 211B - liquid discharge hole; 212 - hanging ring; 22 - sliding seat; 23 - buckle component; 231 - body; 2311 - bending part; 2312 - first surface; 2313 - second surface; 232 - first boss; 233 - second boss; 234 - elastic member; 235 - handle; X - first direction; Y - second direction; Z - gravity direction. Specific embodiments

[0042] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by the present utility model.

[0043] Embodiment:

[0044] Referring to Figures 1-6This embodiment provides a pressure filtration device for potassium nitrate production, which is used to solve the technical problem that the disassembly and subsequent installation of the filtration mechanism in the existing pressure filtration device are relatively cumbersome. The pressure filtration device for potassium nitrate production includes a base 10 and a plurality of filtration components 20. The plurality of filtration components 20 are arranged on the base 10 along the first direction X. Among them, the filtration component 20 includes a mounting frame 21, two sliding seats 22 and two buckle components 23. The inside of the mounting frame 21 is used to install an airbag 211. The mounting frame 21 has two first side surfaces 21A in the second direction Y, and a stepped surface 21B connecting the two first side surfaces 21A. The two sliding seats 22 are respectively located on opposite sides of the mounting frame 21 in the second direction Y. The sliding seat 22 is configured to reciprocate relative to the base 10 along the first direction X. The two buckle components 23 are respectively rotatably arranged on the two sliding seats 22, and both are bent structures. Along the gravity direction Z, a part of the two buckle components 23 are respectively clamped between the two stepped surfaces 21B and the two sliding seats 22, so that the other parts of the two buckle components 23 are respectively abutted against the two first side surfaces 21A. The first direction X, the second direction Y and the gravity direction Z are perpendicular to each other in pairs.

[0045] It should be noted that two adjacent mounting frames 21 in the first direction X are in contact with each other, so that the mounting frame 21 and the airbag 211 jointly enclose a receiving cavity 20A for filtration. Specifically, a liquid inlet hole 211A that penetrates the airbag 211 and is not communicated with the inside of the airbag 211 is provided on the airbag 211, and the slurry enters the receiving cavity 20A through the liquid inlet hole 211A. The mounting frame 21 has a liquid outlet hole. The small acid-base solution in the slurry enters the liquid outlet hole through the gap between the adjacent mounting frames 21 in the first direction X to be collected. Ammonium chloride accumulates in the receiving cavity 20A to form a filter cake. Subsequently, the airbag 211 is inflated to further squeeze the filter cake located in the receiving cavity 20A. Then, the mounting frames 21 move away from each other along the first direction X, and the filter cake (ammonium chloride) falls into the receiving basin 14 in the base 10 along the gravity direction Z through the gap between the mounting frames 21 in the first direction X and is collected.

[0046] Optionally, the side surface of the mounting frame 21 facing the sliding seat 22 has a groove, and the first side surface 21A is the bottom wall of the groove. In this way, a part of the buckle component 23 is located in the groove and can abut against the groove wall along the first direction X to limit the movement of the mounting frame 21 relative to the buckle component 23 along the first direction X.

[0047] Through the above structure, the filtration component 20 in the pressure filtration device for potassium nitrate production provided by the present utility model can be quickly disassembled and assembled. Specifically, refer to Figure 4, when it is necessary to remove the mounting frame 21 to replace and repair parts such as the airbag 211, an external force in the N direction can be applied to the mounting frame 21 by the hoist, so that the mounting frame 21 no longer applies an external force in the gravity direction Z to a part of the buckle assembly 23, so that the other part of the buckle assembly 23 no longer abuts against the mounting frame 21, and further enables the mounting frame 21 to be removed from the base 10 along the N direction.

[0048] When it is necessary to install the mounting frame 21, first arrange the two sliding seats 22 along the second direction Y, and rotate the other parts of the buckle assembly 23 in the direction away from each other along the W1 direction, so that the distance between the other parts of the two buckle assemblies 23 becomes larger along the second direction Y. To facilitate the insertion of the mounting frame 21 into the gap between the two buckle assemblies 23 in the second direction Y, and then the step surfaces 21B of the mounting frame 21 respectively abut against a part of the two buckle assemblies 23, so that the other parts of the two buckle assemblies 23 rotate in the direction close to each other along the W2 direction to abut against the two first side surfaces 21A, thereby fixing the mounting frame 21.

[0049] An optional implementation manner of this embodiment is as follows: The first side surface 21A has a first groove 21D. The buckle assembly 23 includes a body 231 and a first boss 232. The body 231 has a bending portion 2311 which is rotatably mounted on the sliding seat 22. The body 231 has a first surface 2312 for abutting against the first side surface 21A. The first boss 232 protrudes from the first surface 2312. When the first surface 2312 abuts against the first side surface 21A, the first boss 232 is embedded in the first groove 21D.

[0050] Optionally, the body 231 and the first boss 232 are integrally formed.

[0051] Specifically, when it is necessary to install the mounting frame 21, the mounting frame 21 is inserted into the gap between the two bodies 231 in the second direction Y along the gravity direction Z. Then, the step surfaces 21B of the mounting frame 21 respectively apply an external force in the gravity direction Z to the first part of the body 231, so that this part of the body 231 rotates along the W2 direction, and further enables the body to rotate along the W2 direction, so that the first surface 2312 abuts against the first side surface 21A, thereby enabling the first boss 232 to be embedded in the first groove 21D.

[0052] In this way, the first boss 232 cooperates with the first groove 21D to limit the movement of the mounting frame 21 relative to the buckle assembly 23 along the first direction X. More preferably, the first side surface 21A further has a second groove 21E, the first groove 21D and the second groove 21E are arranged along the gravity direction Z, and the buckle assembly 23 further includes a second boss 233, the second boss 233 protrudes from the first surface 2312, and when the first surface 2312 abuts against the first side surface 21A, the second boss 233 is embedded in the second groove 21E.

[0053] An optional implementation of this embodiment is as follows: the side of the first boss 232 away from the body 231 is a curved surface, and the center of curvature of the curved surface is located on the side of the first boss 232 close to the body 231 .

[0054] In this way, the risk of the first boss 232 interfering with the groove wall of the first groove 21D in the gravity direction Z when rotating along the W1 direction and the W2 direction can be reduced.

[0055] An optional implementation of this embodiment is as follows: the buckle assembly 23 also includes an elastic member 234, the body 231 has a second surface 2313 perpendicular to the first surface 2312, and the elastic member 234 is arranged on the second surface 2313 and is used to abut against the step surface 21B.

[0056] Optionally, the elastic member 234 may be a spring or a flexible nylon block.

[0057] In this way, when the installation frame 21 is lowered by driving, a buffering effect is played between the second surface 2313 and the step surface 21B.

[0058] An optional implementation of this embodiment is as follows: the buckle assembly 23 further includes a handle 235. The handle 235 is disposed on the body 231 along the second direction Y and located at one end of both sides of the installation frame 21.

[0059] In this way, when installing the frame 21, the operator can apply external force to the body 231 through the handle 235 to rotate the body along the W1 direction away from each other, so as to facilitate the installation frame 21 to be inserted into the gap between the two buckle assemblies 23 in the second direction Y.

[0060] An optional implementation of this embodiment is as follows: the filter assembly 20 further includes a hanging ring 212. The hanging ring 212 mounting frame 21 has a second side surface 21C away from the step surface 21B along the gravity direction Z, and the hanging ring 212 is arranged on the second side surface 21C.

[0061] In this way, the hook of the crane can be connected to the installation frame 21 through the lifting ring 212, so that it is convenient for the crane to lift the installation frame 21.

[0062] Optionally, the filtering component 20 further includes a cross bar. During the pressure filtration process, the cross bar is sequentially inserted into the lifting rings 212 along the first direction X to limit the relative movement of the mounting frames 21 in the gravity direction Z. Thus, during the pressure filtration process, when an external force in the N direction acts on the mounting frame 21, the external force needs to overcome the gravity of all the mounting frames 21 before it can drive the mounting frame 21 to move in the N direction.

[0063] An alternative implementation of this embodiment is as follows: There are two brackets 11 arranged along the first direction X. Both ends of the two guide rails 12 are respectively arranged on the two brackets 11, and the two guide rails 12 are arranged along the second direction Y. The two sliders 22 in the filtering component 20 are respectively slidably arranged on the two guide rails 12. The driving member 13 is arranged on any one of the brackets 11, and the driving member 13 is configured to cooperate with the other bracket 11 to clamp a plurality of filtering components 20 along the first direction X.

[0064] It can be understood that the driving member 13 can be a hydraulic cylinder. Since the above are all prior arts, they will not be elaborated here.

[0065] As described above, the above are only the specific implementation manners of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope recorded by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A pressure filtration device for potassium nitrate production, characterized in that, include: Pedestal; A plurality of filter components are arranged on the base along a first direction; Wherein, the filtering component comprises: A mounting frame, the interior of which is used to mount the airbag, wherein in the second direction, the mounting frame has two first side surfaces that are arranged opposite to each other, and in the gravity direction, the mounting frame has two step surfaces that face the base; two slides, respectively located on opposite sides of the mounting frame in the second direction, the slides being configured to reciprocate relative to the base along the first direction; The two snap-fit ​​assemblies are rotatably disposed on the two slide seats respectively and are both bent structures. Along the direction of gravity, a portion of the two snap-fit ​​assemblies is clamped between the two step surfaces and the two slide seats respectively, so that the other portion of the two snap-fit ​​assemblies abuts against the two first side surfaces respectively, and the first direction, the second direction and the direction of gravity are perpendicular to each other.

2. The pressure filtration device for potassium nitrate production according to claim 1, wherein The first side surface has a first groove; The buckle assembly includes a main body and a first boss, the main body has a bend, the bend is rotatably mounted on the slide, the main body has a first surface for abutting the first side surface, the first boss protrudes from the first surface, and when the first surface abuts the first side surface, the first boss is embedded in the first groove.

3. The pressure filtration device for potassium nitrate production according to claim 2, characterized in that, The side surface of the first boss away from the body is a curved surface, and the center of curvature of the curved surface is located on the side of the first boss close to the body.

4. The pressure filtration device for potassium nitrate production according to claim 2, characterized in that, The buckle assembly further includes an elastic member, the body has a second surface perpendicular to the first surface, and the elastic member is disposed on the second surface and is used to abut against the step surface.

5. The pressure filtration device for potassium nitrate production according to claim 2, wherein, The buckle assembly also includes: A handle is arranged on the body along the second direction and located at one end of both sides of the installation frame.

6. A pressure filtration device for potassium nitrate production according to claim 1, characterized in that, The filter assembly also includes: The mounting frame has a second side surface facing away from the step surface along the direction of gravity, and the mounting frame has a second side surface.

7. A pressure filtration device for potassium nitrate production according to any one of claims 1-6, characterized in that, The base comprises: Two brackets, arranged along the first direction; Two guide rails, both ends of which are respectively arranged on two brackets, the two guide rails are arranged along the second direction, and the two slide seats in the filter assembly are respectively slidably arranged on the two guide rails; A driving member is disposed on any of the brackets, and the driving member is configured to cooperate with another of the brackets to compress the plurality of filter assemblies along the first direction.

Images