Cylindrical filter cloth heat sealing device

Abstract

The utility model provides a heat sealing device for cylindrical filter cloth. The heat sealing device comprises a supporting seat, a pressure head and a heating assembly, a first pressing unit is arranged at the top of the supporting seat, the pressing head is arranged above the supporting seat in a liftable manner, a second pressing unit is arranged at the bottom of the pressing head, and a pressing gap is formed between the second pressing unit and the first pressing unit. The first press-fit unit and the second press-fit unit are the same in structure, each press-fit unit comprises a mounting strip, a press-fit assembly and two positioning assemblies, the press-fit assemblies are arranged on the mounting strips, and the two positioning assemblies are located at the two ends of the press-fit assemblies correspondingly. The heating assembly comprises a bearing seat, a mounting frame and a heating strip, the bearing seat is slidably arranged on the supporting seat, the mounting frame is adjustably arranged on the side wall, close to the pressing gap, of the bearing seat, and the heating strip is arranged on the mounting frame. According to the heat sealing device for the cylindrical filter cloth, the processing efficiency of the cylindrical filter cloth can be improved, and the quality of the splicing part of the cylindrical filter cloth can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of filter cloth processing equipment, in particular to a cylindrical filter cloth heat-sealing device. Background Art

[0002] Candle filter is an advanced filtering equipment. It is widely used in many industries such as petroleum, plastics, electroplating, chemicals, ceramics, pharmaceuticals and sugar making due to its high efficiency, energy saving, high degree of automation and pollution-free.

[0003] When in use, the filter element of the candle filter needs to be wrapped with a cylindrical filter cloth. When the material passes through the filter cloth and enters the filter element, the filter cloth will be squeezed to the filter element due to the squeezing of the material, and a filter cake layer will be formed on the outside of the filter cloth. Therefore, in order to ensure that the candle filter achieves a good solid-liquid separation effect, there must be no sewing joints on the cylindrical filter cloth.

[0004] Typically, those skilled in the art use heat sealers to heat-seal and press filter cloth to achieve good results at the splicing locations of cylindrical filter cloth. However, existing heat sealers have low processing efficiency and are unable to efficiently complete the processing of cylindrical filter cloth. Furthermore, the ends of the filter cloth that require heat seal and press are prone to wrinkling during the heating or pressing process, thus affecting the splicing effect. Utility Model Content

[0005] In view of this, the present invention aims to provide a cylindrical filter cloth heat-sealing device to solve the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole comprises a first end, and a second end, and a second end. The bosses comprise a through-hole, a second end, and a second end. The bosses comprise a through-hole, a second end, and a second end. The bosses comprise a through-hole, a second end, and a second end.

[0008] Furthermore, the positioning assembly includes a connecting plate and a pressing plate; the connecting plate is slidably arranged on the pressing assembly, and the sliding direction of the connecting plate is parallel to the lifting direction of the pressure head; the pressing plate is arranged at one end of the connecting plate close to the pressing gap, the pressing plate is perpendicular to the connecting plate, and a positioning gap is formed between the pressing plate and the side wall of the pressing assembly close to the pressing gap.

[0009] Furthermore, the positioning assembly also includes a limit plate and a positioning spring; the limit plate is arranged at one end of the connecting plate away from the pressing gap, the limit plate is perpendicular to the connecting plate, and an accommodating gap is formed between the limit plate and the side wall of the pressing assembly away from the pressing gap; the positioning spring is arranged inside the accommodating gap, one end of the positioning spring is abutted against the pressing assembly, and the other end is abutted against the limit plate.

[0010] Furthermore, the pressing assembly includes: a pressing strip, a movable block and a tensioning spring; the pressing strip is detachably arranged on the mounting strip, the movable block is slidably arranged on the mounting strip, the two positioning assemblies are respectively arranged on the movable block and the pressing strip, and the sliding direction of the movable block is parallel to the length direction of the first pressing unit, the tensioning spring is arranged between the pressing strip and the movable block, and one end of the tensioning spring is abutted against the movable block, and the other end is abutted against the side wall of the pressing strip.

[0011] Furthermore, a guide groove is provided on the top surface of the support seat, and the bearing seat is slidably arranged inside the guide groove; an operating rod is provided on the side wall of the bearing seat, and the free end of the operating rod extends to the outside of the guide groove. A reset spring is sleeved on the operating rod, and one end of the reset spring is abutted against the side wall of the bearing seat, and the other end is abutted against the inner wall of the guide groove.

[0012] Furthermore, the cylindrical filter cloth heat sealing device also includes a locking assembly, which includes: a locking seat, a locking pin and a locking spring; the locking seat is arranged on the side wall of the support seat, and the locking pin is slidably arranged on the locking seat, the sliding direction of the locking pin is perpendicular to the axial direction of the operating rod, and a locking groove for accommodating the locking pin is provided on the side wall of the operating rod; a shift rod is provided on the side wall of the locking pin, and two baffles parallel to each other are also provided on the locking seat, both of the baffles are provided with pin holes for accommodating the locking pin, and the shift rod is located between the two baffles; the locking spring is sleeved on the locking pin, and one end of the locking spring is abutted against the side wall of the shift rod, and the other end is abutted against the baffle away from the operating rod.

[0013] Furthermore, a first oblong hole is provided on the bearing seat, the length direction of the first oblong hole is parallel to the lifting direction of the pressure head, and a connecting bolt is provided inside the first oblong hole; a second oblong hole for accommodating the connecting bolt is provided on the mounting frame, and the length direction of the second oblong hole is parallel to the length direction of the first pressing unit.

[0014] Furthermore, a first connecting seat and a second connecting seat are provided on the top surface of the support seat, the first connecting seat is hinged to one end of the first pressing unit, and the top surface of the second connecting seat is provided with a receiving groove for accommodating the other end of the first pressing unit.

[0015] Furthermore, a guide column is provided on the top surface of the support seat, and a guide hole for accommodating the guide column is provided on the bottom surface of the pressure head.

[0016] Furthermore, the cylindrical filter cloth heat sealing device also includes a base, the support seat is arranged on the top surface of the base, a guide rod is also provided on the base, and a driving component for driving the pressure head to perform a lifting action is provided on the guide rod.

[0017] Compared with the prior art, the cylindrical filter cloth heat sealing device described in the present invention has the following advantages:

[0018] (1) The utility model discloses a cylindrical filter cloth heat-sealing device, wherein a first pressing unit and a second pressing unit of the same structure are provided on the pressing head and the supporting seat. When in use, the positioning components on the first pressing unit and the second pressing unit can respectively press and fix the corners of the filter cloth at both ends, so that the two ends of the filter cloth that need to be hot-melt pressed are reliably fixed inside the pressing gap, avoiding wrinkles, curling or deviation of the filter cloth. The pressing head can then be driven to descend, so that the two ends of the filter cloth are in contact with the heating strip, ensuring that they reach the hot-melt pressing temperature, and the heating strip is withdrawn from the pressing gap by sliding the supporting seat, so that the pressing head can apply pressure to the two ends of the filter cloth after heating, thereby quickly completing the processing of the cylindrical filter cloth and improving the processing efficiency.

[0019] (2) The present invention discloses a cylindrical filter cloth heat-sealing device, wherein the pressing assembly includes a slidable movable block and a fixed bar, and a tension spring is provided between the fixed bar and the movable block. Since the tension spring exerts a force to separate the movable block and the fixed bar, when the corners of the filter cloth are pressed and fixed by the positioning assembly, the filter cloth enters a taut state, thereby further improving the hot-melt pressing quality of the spliced ​​parts of the cylindrical filter cloth.

[0020] (3) The present invention describes a cylindrical filter cloth heat-sealing device, which is provided with a first oblong hole on the bearing seat and a second oblong hole on the mounting frame. Before use, the staff can adjust the position of the heating strip according to the actual situation of the cylindrical filter cloth to be processed, thereby meeting various processing requirements. In addition, the device is provided with a reset spring on the operating rod and a locking assembly on the support seat. When the staff moves the heating strip to the inside of the pressing gap by sliding the bearing seat, the reset spring will enter a compressed state, and the locking pin in the locking assembly will be inserted into the locking groove on the operating rod, thereby locking the bearing seat. After completing the heating work of the filter cloth, the staff can drive the locking pin out of the locking groove. At this time, the elastic force in the reset spring can drive the heating strip to quickly withdraw from the pressing gap, thereby improving the operating convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic structural diagram of a cylindrical filter cloth heat-sealing device according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic structural diagram of the support base, bearing base and operating rod according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the bottom structure of the pressure head according to an embodiment of the present utility model;

[0025] Figure 4 This is an exploded view of the first pressing unit according to an embodiment of the present utility model;

[0026] Figure 5 This is an exploded view of the heating assembly described in an embodiment of the present utility model.

[0027] Description of reference numerals:

[0028] 1-support seat; 11-guide groove; 12-first connecting seat; 13-second connecting seat; 131-accommodating groove; 14-guide column; 2-pressure head; 21-guide hole; 3-mounting strip; 41-pressing strip; 42-movable block; 43-tensioning spring; 51-connecting plate; 52-pressing plate; 53-limiting plate; 54-positioning spring; 61-bearing seat; 611-first oblong hole; 62-mounting frame; 621-second oblong hole; 63-heating strip; 64-operating rod; 641-locking groove; 65-reset spring; 71-locking seat; 711-baffle; 72-locking pin; 721-dial rod; 73-locking spring; 81-base; 82-guide rod; 9-drive assembly. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] A cylindrical filter cloth heat sealing device, the structure of which can be Figure 1-Figure 5For illustration purposes only. In this embodiment, the cylindrical filter cloth heat-sealing device comprises: a support base 1, a pressure head 2, and a heating assembly, with the pressure head 2 being arranged to rise and fall above the support base 1. During use, the heating assembly heats both ends of the filter cloth, causing them to melt. The support base 1 and pressure head 2 cooperate to press the two ends of the filter cloth together, bonding the melted ends together to form a cylindrical filter cloth that meets the requirements of candle filters.

[0034] In the prior art, the ends of the filter cloth are poorly fixed during hot-melt pressing, and are prone to wrinkling, curling, and offsetting, which affects the processing effect of the spliced ​​parts of the cylindrical filter cloth. To address this problem, this embodiment provides a first pressing unit at the top of the support base 1, and a second pressing unit at the bottom of the pressure head 2, which is aligned with the first pressing unit. The first pressing unit and the second pressing unit have the same structure, each including: a mounting bar 3, a pressing assembly, and two positioning assemblies. The pressing assembly is arranged on the mounting bar 3, and the two positioning assemblies are located at both ends of the pressing assembly. When assembly is completed, a feed channel is formed between the first pressing unit and the support base 1, and a pressing gap is formed between the second pressing unit and the first pressing unit. When in use, the staff can first pass the first end of the filter cloth through the feed channel and fold it upwards, so that the two corners of the first end of the filter cloth are pressed and fixed with the help of the two positioning components on the first pressing unit. Then, the second end of the filter cloth is moved under the pressure head 2, and the two corners of the second end of the filter cloth are pressed and fixed with the two positioning components on the second pressing unit, so that both ends of the filter cloth are well fixed. Next, the pressure head 2 is driven to descend so that the two ends of the filter cloth are close to each other, and the two ends of the filter cloth are heated by the heating component. When the two ends of the filter cloth reach the hot melt temperature, the heating component is driven to leave the pressing gap and the pressure head 2 is further lowered, so that the two ends of the filter cloth are pressed together with the pressure applied by the pressure head 2, so that the filter cloth forms a cylindrical structure.

[0035] Optionally, the positioning assembly may include a connecting plate 51 and a pressing plate 52. Figure 4 As shown, the connecting plate 51 is slidably mounted on the pressing assembly, and the sliding direction of the connecting plate 51 should be parallel to the lifting direction of the pressure head 2. The pressing plate 52 is positioned at one end of the connecting plate 51 near the pressing gap. The pressing plate 52 is perpendicular to the connecting plate 51, and a positioning gap is formed between the pressing plate 52 and the side wall of the pressing assembly near the pressing gap. During use, the operator can place the edge of the filter cloth into the positioning gap, then slide the connecting plate 51 to bring the pressing plate 52 close to the pressing assembly, thereby using the pressing plate 52 and the pressing assembly to compress and secure the edge of the filter cloth.

[0036] To enhance the compression effect of the positioning assembly, the positioning assembly may further include a limiting plate 53 and a positioning spring 54. The limiting plate 53 is disposed at one end of the connecting plate 51 away from the compression gap. The limiting plate 53 is perpendicular to the connecting plate 51 and forms an accommodation gap between the limiting plate 53 and the side wall of the compression assembly away from the compression gap. The positioning spring 54 is disposed within the accommodation gap, with one end of the positioning spring 54 abutting against the compression assembly and the other end abutting against the limiting plate 53. Since the compression plate 52 and the limiting plate 53 are located at both ends of the connecting plate 51, respectively, the elastic force provided by the positioning spring 54 enables the edges and corners of the filter cloth to obtain a better compression effect after entering the positioning gap, thereby enhancing the device's ability to secure the filter cloth.

[0037] Furthermore, to further enhance the device's ability to prevent wrinkles in the filter cloth, the pressing assembly may include a pressing strip 41, a movable block 42, and a tensioning spring 43. Specifically, the pressing strip 41 is detachably mounted on the mounting strip 3, and the movable block 42 is slidably mounted on the mounting strip 3. The two positioning assemblies within the same pressing unit should be mounted on the movable block 42 and the pressing strip 41, respectively, with the sliding direction of the movable block 42 parallel to the length of the first pressing unit. The tensioning spring 43 is positioned between the pressing strip 41 and the movable block 42, with one end of the tensioning spring 43 abutting against the movable block 42 and the other end abutting against the sidewall of the pressing strip 41.

[0038] Because the tension spring 43 exerts a force to separate the movable block 42 and the pressing strip 41, the filter cloth becomes taut when the two corners on the same end of the filter cloth are respectively fixed by the two positioning assemblies. In this taut state, the filter cloth will wrinkle, further improving the pressing effect at both ends of the filter cloth and thus improving the quality of the spliced ​​parts of the cylindrical filter cloth.

[0039] As an optional implementation of this embodiment, in order to ensure that the first pressing unit and the second pressing unit achieve a good alignment effect when pressing the filter cloth, a guide column 14 may be provided on the top surface of the support base 1, and a guide hole 21 for accommodating the guide column 14 may be provided on the bottom surface of the pressure head 2. When the filter cloth is pressed by this device, the top end of the guide column 14 will be inserted into the guide hole 21 due to the descent of the pressure head 2. At this time, the cooperation between the guide column 14 and the guide hole 21 can guide the subsequent descent of the pressure head 2, thereby improving the stability of the descent action of the pressure head 2 and ensuring that the first pressing unit and the second pressing unit maintain a mutually aligned posture to complete the pressing work.

[0040] In addition, in order to facilitate the separation of the cylindrical filter cloth from the device after the hot melt pressing is completed, Figure 2As shown, the top surface of the support base 1 may be provided with a first connecting base 12 and a second connecting base 13, and a receiving groove 131 may be provided on the top surface of the second connecting base 13. During assembly, the first connecting base 12 may be hingedly connected to one end of the first pressing unit via a hinge shaft, and the other end of the first pressing unit may be placed within the receiving groove 131. After processing the cylindrical filter cloth, the operator may rotate the first pressing unit about the hinge shaft to disengage the other end of the first pressing unit from the receiving groove 131, thereby facilitating the removal of the cylindrical filter cloth from the device.

[0041] In order to achieve heating of both ends of the filter cloth, the heating assembly in this embodiment includes: a supporting seat 61, a mounting frame 62 and a heating strip 63. Figure 1 and Figure 5 As shown, the mounting bracket 62 is adjustable and mounted on the side wall of the support base 61 near the lamination gap, and the heating strip 63 is mounted on the mounting bracket 62. During assembly, the support base 61 should be slidably mounted on the support base 1, with the sliding direction of the support base 61 perpendicular to the length of the first lamination unit. After assembly, the length of the heating strip 63 should be parallel to the length of the first lamination unit and located between the first and second lamination units.

[0042] After the ends of the filter cloth are compressed and secured, the operator can slide the support 61 toward the first pressing unit to insert the heating strip 63 into the pressing gap. As the pressing head 2 descends, the ends of the filter cloth will contact the top and bottom surfaces of the heating strip 63, respectively, thereby heating the filter cloth. When the ends of the filter cloth reach the hot melt temperature, the operator can slide the support 61 away from the first pressing unit to remove the heating strip 63 from the pressing gap, allowing the ends of the filter cloth to contact and press together as the pressing head 2 further descends.

[0043] Optionally, to facilitate flexible adjustment of the position of the heating strip 63 by the operator, the support base 61 may be provided with a first oblong hole 611 whose length is parallel to the lifting direction of the pressing head 2, and the mounting bracket 62 may be provided with a second oblong hole 621 whose length is parallel to the length of the first pressing unit. During assembly, the operator can load the connecting bolts into the first oblong hole 611 and pass the connecting bolts through the second oblong hole 621 to complete the assembly between the mounting bracket 62 and the support base 61. When the position of the heating strip 63 needs to be adjusted, the operator can drive the connecting bolts to slide along the first oblong hole 611 and / or the second oblong hole 621 to match the position of the heating strip 63 to the actual needs.

[0044] As another optional implementation of this embodiment, to improve the operating convenience of the heating assembly, a guide groove 11 can be provided on the top surface of the support base 1, and an operating rod 64 can be provided on the side wall of the support base 61. During assembly, the support base 61 should be slidably arranged within the guide groove 11, thereby constraining the sliding of the support base 61 by the guide groove 11, and the free end of the operating rod 64 will extend outside the guide groove 11, so that the operator can drive the support base 61 to move through the operating rod 64.

[0045] Secondly, a return spring 65 can be mounted on the operating rod 64. After assembly, one end of the return spring 65 abuts against the side wall of the support seat 61, and the other end abuts against the inner wall of the guide groove 11. As the support seat 61 slides toward the first pressing unit, the return spring 65 is compressed. When both ends of the filter cloth reach the hot-melt temperature, the operator can release the operating rod 64. At this time, the elastic force of the return spring 65 drives the support seat 61 to slide away from the first pressing unit, allowing the heating strip 63 to quickly exit the pressing gap.

[0046] In addition, in order to further improve the operational convenience of the device, the device may also include a locking assembly. Specifically, the locking assembly may include: a locking seat 71, a locking pin 72 and a locking spring 73. Figure 2 As shown, a locking seat 71 is disposed on the side wall of the support seat 1, and a locking pin 72 is slidably disposed on the locking seat 71. The sliding direction of the locking pin 72 is perpendicular to the axial direction of the operating rod 64. A locking groove 641 for accommodating the locking pin 72 is provided on the side wall of the operating rod 64. A detent rod 721 is provided on the side wall of the locking pin 72. The locking seat 71 is also provided with two mutually parallel baffles 711. Both baffles 711 are provided with pin holes for accommodating the locking pin 72, and the detent rod 721 is located between the two baffles 711. A locking spring 73 is sleeved on the locking pin 72, with one end of the locking spring 73 abutting against the side wall of the detent rod 721 and the other end abutting against the baffle 711 away from the operating rod 64. When the locking groove 641 is aligned with the locking pin 72 due to the bearing seat 61 sliding toward the first pressing unit, the locking pin 72 is inserted into the locking groove 641 under the action of the locking spring 73, thereby locking the bearing seat 61 and ensuring that the heating strip 63 remains within the pressing gap. When both ends of the filter cloth reach the hot melt temperature, the operator can pull the locking pin 72 using the lever 721 to withdraw the locking pin 72 from the locking groove 641, allowing the bearing seat 61 to move away from the first pressing unit under the action of the return spring, allowing the heating strip 63 to withdraw from the pressing gap.

[0047] As another optional implementation of this embodiment, in order to facilitate the assembly between this device and other components, the cylindrical filter cloth heat sealing device may further include a base 81. Figure 1As shown, the support base 1 is arranged on the top surface of the base 81, and a guide rod 82 is also provided on the base 81. A drive assembly 9 for driving the pressure head 2 to perform a lifting action is provided on the guide rod 82. When in use, the staff can fix the device to other equipment or an operating table through the base 81.

[0048] The following describes the effects of the above scheme:

[0049] This embodiment provides a cylindrical filter cloth heat-sealing device. This device uses positioning assemblies in the first and second pressing units to compress and secure the corners of the filter cloth ends. The pressing assembly also tightens the ends of the filter cloth, preventing wrinkles, curling, or misalignment, thereby improving the quality of the cylindrical filter cloth joints. Furthermore, the device allows the heating strip to enter and exit the pressing gap by moving the support seat, improving the processing efficiency of the cylindrical filter cloth. Furthermore, the locking assembly and return spring work together to enhance operational convenience.

[0050] It should be noted that the heating strip in this embodiment can be a common electric heating device (e.g., an electric heating wire), and the drive assembly can be a common drive device (e.g., an electric telescopic rod). The device should also include components for power supply and motion control for these devices. The structure and operating principles of these devices are well known to the public and will not be detailed in this application.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cylindrical filter cloth heat sealing device, characterized in that: include: A support base (1), a pressure head (2) and a heating component; a first pressing unit is provided on the top of the support base (1), and a feed channel is formed between the first pressing unit and the support base (1); the pressure head (2) is arranged above the support base (1) in a liftable manner, and a second pressing unit is provided at the bottom of the pressure head (2), the second pressing unit is aligned with the first pressing unit, and a pressing gap is formed between the second pressing unit and the first pressing unit; The first pressing unit and the second pressing unit have the same structure, both comprising: a mounting bar (3), a pressing assembly and two positioning assemblies, wherein the pressing assembly is arranged on the mounting bar (3), and the two positioning assemblies are respectively located at both ends of the pressing assembly; the heating assembly comprises: a bearing seat (61), a mounting frame (62) and a heating strip (63), wherein the bearing seat (61) is slidably arranged on the support seat (1), and the sliding direction of the bearing seat (61) is perpendicular to the length direction of the first pressing unit, and the mounting frame (62) is position-adjustably arranged on the side wall of the bearing seat (61) near the pressing gap, and the heating strip (63) is arranged on the mounting frame (62), and the length direction of the heating strip (63) is parallel to the length direction of the first pressing unit, and the heating strip (63) is located between the first pressing unit and the second pressing unit.

2. The cylindrical filter cloth heat sealing device according to claim 1, characterized in that: The positioning assembly includes a connecting plate (51) and a pressing plate (52); the connecting plate (51) is slidably arranged on the pressing assembly, and the sliding direction of the connecting plate (51) is parallel to the lifting direction of the pressing head (2); the pressing plate (52) is arranged at one end of the connecting plate (51) close to the pressing gap, the pressing plate (52) is perpendicular to the connecting plate (51), and a positioning gap is formed between the pressing plate (52) and the side wall of the pressing assembly close to the pressing gap.

3. The cylindrical filter cloth heat sealing device according to claim 2, characterized in that: The positioning assembly further comprises a limiting plate (53) and a positioning spring (54); the limiting plate (53) is arranged at one end of the connecting plate (51) away from the pressing gap, the limiting plate (53) is perpendicular to the connecting plate (51), and an accommodating gap is formed between the limiting plate (53) and the side wall of the pressing assembly away from the pressing gap; the positioning spring (54) is arranged inside the accommodating gap, one end of the positioning spring (54) is in contact with the pressing assembly, and the other end is in contact with the limiting plate (53).

4. The cylindrical filter cloth heat sealing device according to claim 1, characterized in that: The pressing assembly comprises: a pressing strip (41), a movable block (42) and a tensioning spring (43); the pressing strip (41) is detachably arranged on the mounting strip (3), the movable block (42) is slidably arranged on the mounting strip (3), the two positioning assemblies are respectively arranged on the movable block (42) and the pressing strip (41), and the sliding direction of the movable block (42) is parallel to the length direction of the first pressing unit, the tensioning spring (43) is arranged between the pressing strip (41) and the movable block (42), and one end of the tensioning spring (43) is in contact with the movable block (42), and the other end is in contact with the side wall of the pressing strip (41).

5. The cylindrical filter cloth heat sealing device according to claim 1, characterized in that: A guide groove (11) is provided on the top surface of the support seat (1), and the bearing seat (61) is slidably arranged inside the guide groove (11); an operating rod (64) is provided on the side wall of the bearing seat (61), and the free end of the operating rod (64) extends to the outside of the guide groove (11); a return spring (65) is sleeved on the operating rod (64), and one end of the return spring (65) is in contact with the side wall of the bearing seat (61), and the other end is in contact with the inner wall of the guide groove (11).

6. The cylindrical filter cloth heat sealing device according to claim 5, characterized in that: The cylindrical filter cloth heat-sealing device further comprises a locking assembly, which comprises: a locking seat (71), a locking pin (72) and a locking spring (73); the locking seat (71) is arranged on the side wall of the support seat (1); the locking pin (72) is slidably arranged on the locking seat (71); the sliding direction of the locking pin (72) is perpendicular to the axial direction of the operating rod (64); and a locking groove (641) for accommodating the locking pin (72) is provided on the side wall of the operating rod (64); the locking pin ( A shift rod (721) is provided on the side wall of the shift rod (72), and two mutually parallel baffles (711) are also provided on the locking seat (71), and the two baffles (711) are both provided with a pin hole for accommodating the locking pin (72), and the shift rod (721) is located between the two baffles (711); the locking spring (73) is sleeved on the locking pin (72), and one end of the locking spring (73) is abutted against the side wall of the shift rod (721), and the other end is abutted against the baffle (711) away from the operating rod (64).

7. The cylindrical filter cloth heat sealing device according to claim 1, characterized in that: The bearing seat (61) is provided with a first oblong hole (611), the length direction of the first oblong hole (611) is parallel to the lifting direction of the pressure head (2), and a connecting bolt is provided inside the first oblong hole (611); the mounting frame (62) is provided with a second oblong hole (621) for accommodating the connecting bolt, and the length direction of the second oblong hole (621) is parallel to the length direction of the first pressing unit.

8. The cylindrical filter cloth heat sealing device according to claim 1, characterized in that: A first connecting seat (12) and a second connecting seat (13) are provided on the top surface of the support seat (1); the first connecting seat (12) is hinged to one end of the first pressing unit; and a receiving groove (131) for receiving the other end of the first pressing unit is provided on the top surface of the second connecting seat (13).

9. The cylindrical filter cloth heat sealing device according to claim 1, characterized in that: A guide column (14) is provided on the top surface of the support seat (1), and a guide hole (21) for accommodating the guide column (14) is provided on the bottom surface of the pressure head (2).

10. The cylindrical filter cloth heat sealing device according to claim 1, characterized in that: The cylindrical filter cloth heat-sealing device further comprises a base (81), the support seat (1) is arranged on the top surface of the base (81), a guide rod (82) is further provided on the base (81), and a driving assembly (9) for driving the pressure head (2) to perform a lifting action is provided on the guide rod (82).

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