Filler device with filler easy to replace

Abstract

The utility model discloses a packing device easy to replace packing, which relates to the technical field of water heaters and comprises a transmission shaft, a packing chamber is arranged on the outer surface of the transmission shaft, a plurality of packing materials are filled in the packing chamber, the packing materials are sleeved on the outer surface of the transmission shaft, and packing check rings are arranged among the packing materials. The outer surface of the transmission shaft is sleeved with an inner packing gland, the outer surface of the transmission shaft is sleeved with an outer packing gland, the cross section of the inner packing gland is in an L shape, the horizontal side of the inner packing gland is located in the packing chamber, the inner packing gland and the packing chamber are matched, and the inner packing gland and the outer packing gland are tightly connected in a clamped mode through the inner packing gland and the outer packing gland. Compared with the prior art, the sealing effect can be greatly improved, the filler can be replaced without disassembling the transmission shaft, the problem that the sealing performance is reduced due to the fact that the transmission shaft is frequently disassembled is effectively solved, meanwhile, a large amount of manpower and time cost are reduced, and the production efficiency of the pump body and fluid treatment equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a filling device with which the filling is easy to replace. Background Art

[0002] In modern industry, packing devices are widely used in various pumps and fluid handling equipment, especially when high temperature, high pressure, corrosive fluids or fluids containing solid particles need to be handled. In order to ensure the sealing performance and service life of the packing, it is necessary to select appropriate packing materials and design appropriate stuffing box structures;

[0003] When replacing the packing in the existing packing device, it is usually necessary to remove the transmission shaft to replace the packing. Frequent removal of the transmission shaft may lead to a decrease in sealing performance, which may cause fluid leakage in the pump body or fluid processing equipment. At the same time, removing the transmission shaft also requires a lot of manpower and time, thereby reducing the production efficiency of the pump body and the fluid processing equipment. Utility Model Content

[0004] In view of this, and in view of the deficiencies of the prior art, the utility model provides a packing device that is easy to replace the packing, so as to solve the problem in the prior art that the transmission shaft needs to be dismantled to replace the packing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a packing device with easy-to-replace packing, comprising a transmission shaft, a packing chamber is arranged on the outer surface of the transmission shaft, a plurality of packings are filled in the packing chamber, the packings are sleeved on the outer surface of the transmission shaft, a packing retaining ring is arranged between the packings, an inner packing gland is sleeved on the outer surface of the transmission shaft, an outer packing gland is sleeved on the outer surface of the transmission shaft, the inner packing gland has an L-shaped cross-section, a horizontal side of the inner packing gland is located inside the packing chamber, and the two are matched, a convex ring is installed on the vertical side of the inner packing gland, a groove is provided on the side of the outer packing gland close to the inner packing gland, and the convex ring is matched with the groove; a fastening component is provided on one side of the outer packing gland, which is used to connect the outer packing gland and the packing chamber, a mounting groove is provided on the side of the packing chamber close to the outer packing gland, and a locking component is provided inside the mounting groove, which is used to limit the moving range of the fastening component.

[0006] Preferably, the horizontal side of the inner stuffing gland is in contact with the stuffing, which is used to reduce the gap between the stuffing and make them closer. The diameter of the vertical side of the inner stuffing gland is greater than the inner diameter of the stuffing chamber, and its vertical side is in fit with one side of the stuffing chamber, which is used to ensure the sealing between the transmission shaft and the stuffing chamber.

[0007] Preferably, the fastening assembly includes a rotating shaft, which is rotatably installed on both sides of the external packing gland, an adjustment handle is provided at one end of the rotating shaft, a limiting ring is provided at the other end of the rotating shaft, a stop rod is provided on the outer surface of the rotating shaft, and the stop rod is close to the limiting ring.

[0008] Preferably, the baffle rod and the limiting ring are both matched with the notches of the mounting groove, which are used to ensure that the baffle rod and the limiting ring can extend into the mounting groove. A limiting groove is provided inside the mounting groove, and the limiting groove is matched with the baffle rod, which is used to limit the rotation range of the baffle rod.

[0009] Preferably, the locking assembly includes a card slot, which is opened on both sides of the stuffing chamber and is connected to the installation slot. An operating cylinder is slidably arranged inside the card slot, a sleeve is arranged at one end of the operating cylinder, and the sleeve is located outside the stuffing chamber.

[0010] Preferably, a pressing block is slidably provided on one side of the sleeve away from the stuffing chamber, a connecting rod is provided on one side of the pressing block, the connecting rod is slidably installed inside the operating cylinder, a return spring is provided between the inner wall of the sleeve and the opposite surface of the pressing block, and the return spring is sleeved on the outer surface of the connecting rod.

[0011] Preferably, a bayonet is provided on the outer surface of the connecting rod, limiting balls are evenly arranged inside the operating cylinder, and the limiting balls are located in the bayonet, and through holes are evenly provided on the outer surface of the operating cylinder.

[0012] Preferably, the diameter of the limiting ball is slightly larger than the diameter of the through hole, which is used to ensure that one side of the limiting ball can be exposed from the inside of the through hole. The bottom of the slot is trapezoidal, which is used to limit the movement of the limiting ball.

[0013] Compared with the prior art, the utility model provides a packing device that is easy to replace the packing, and has the following beneficial effects:

[0014] The tight clamping connection between the inner packing gland and the outer packing gland can greatly improve the sealing effect. It also allows the packing to be replaced without removing the drive shaft, thereby effectively avoiding the problem of reduced sealing due to frequent removal of the drive shaft. At the same time, it also reduces a lot of manpower and time costs, thereby improving the production efficiency of the pump body and fluid handling equipment.

[0015] Through the design of the fastening components and the snap-fit ​​components, the outer packing gland and the packing chamber can be quickly fixed and disassembled, which can effectively reduce the time required for workers to replace the packing, thereby greatly shortening the downtime of the equipment, reducing production interruptions and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an exploded view of the overall structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-section structure of the transmission shaft in the utility model;

[0019] Figure 4 A schematic diagram of the structure inside the installation slot in the utility model;

[0020] Figure 5 For this utility model Figure 4 A magnified view of the structure at center A;

[0021] Figure 6 It is a schematic diagram of the cross-section structure of the packing chamber in the utility model;

[0022] Figure 7 For this utility model Figure 6 A magnified view of the structure at B in the middle;

[0023] Figure 8 It is a schematic diagram of the cutaway structure of the sleeve in the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Transmission shaft; 2. Stuffing chamber; 3. Stuffing material; 4. Stuffing retaining ring; 5. Inner stuffing gland; 6. Outer stuffing gland; 7. Adjusting handle; 8. Rotating shaft; 9. Stop rod; 10. Limiting collar; 11. Limiting groove; 12. Mounting groove; 13. Clamping groove; 14. Sleeve; 15. Operating cylinder; 16. Pressing block; 17. Connecting rod; 18. Reset spring; 19. Through hole; 20. Limiting ball; 21. Bayonet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model is further described in detail below based on the drawings and embodiments.

[0028] Example

[0029] Please refer to Figures 1 to 3As shown, in order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a packing device that is easy to replace packing, including a transmission shaft 1, a packing chamber 2 is arranged on the outer surface of the transmission shaft 1, and a plurality of packings 3 are filled in the packing chamber 2. The packings 3 are sleeved on the outer surface of the transmission shaft 1, and a packing retaining ring 4 is arranged between the packings 3. The outer surface of the transmission shaft 1 is sleeved with an inner packing gland 5, and the outer surface of the transmission shaft 1 is sleeved with an outer packing gland 6. The cross-section of the inner packing gland 5 is L-shaped, and the horizontal side of the inner packing gland 5 is located inside the packing chamber 2, and the two are adapted to each other, wherein the horizontal side of the inner packing gland 5 is in contact with the packing 3, which is used to reduce the packing 3. The gap between them is made tighter, a convex ring is installed on the vertical side of the inner stuffing gland 5, a groove is provided on the side of the outer stuffing gland 6 close to the inner stuffing gland 5, and the convex ring is matched with the groove, and the diameter value of the vertical side of the inner stuffing gland 5 is greater than the inner diameter value of the stuffing chamber 2, and its vertical side is in contact with one side of the stuffing chamber 2, which is used to ensure the sealing between the transmission shaft 1 and the stuffing chamber 2; a fastening component is provided on one side of the outer stuffing gland 6, which is used to connect the outer stuffing gland 6 and the stuffing chamber 2, and an installation groove 12 is provided on the side of the stuffing chamber 2 close to the outer stuffing gland 6, and a locking component is provided inside the installation groove 12, which is used to limit the moving range of the fastening component.

[0030] Further examples:

[0031] Please refer to Figures 4 to 8 As shown, the fastening assembly includes a rotating shaft 8, which is rotatably installed on both sides of the outer packing gland 6, an adjusting handle 7 is provided at one end of the rotating shaft 8, a limiting collar 10 is provided at the other end of the rotating shaft 8, a baffle 9 is provided on the outer surface of the rotating shaft 8, and the baffle 9 is close to the limiting collar 10, wherein the adjusting handle 7 is used to adjust the position of the limiting collar 10 and the baffle 9 to facilitate the fixation and separation between the outer packing gland 6 and the packing chamber 2, the baffle 9 and the limiting collar 10 are both adapted to the notch of the mounting groove 12, which is used to ensure that the baffle 9 and the limiting collar 10 can extend into the mounting groove 12, a limiting groove 11 is provided inside the mounting groove 12, the limiting groove 11 is adapted to the baffle 9, and is used to limit the rotation range of the baffle 9.

[0032] The clamping assembly includes a clamping groove 13, which is provided on both sides of the stuffing chamber 2, and the clamping groove 13 is connected with the mounting groove 12, so that the operating cylinder 15 can pass through the interior of the limiting collar 10, thereby achieving the effect of secondary limiting fixation, an operating cylinder 15 is slidably arranged inside the clamping groove 13, a sleeve 14 is provided at one end of the operating cylinder 15, and the sleeve 14 is located outside the stuffing chamber 2, a pressing block 16 is slidably arranged on the side of the sleeve 14 away from the stuffing chamber 2, a connecting rod 17 is provided on one side of the pressing block 16, and the connecting rod 17 is slidably installed inside the operating cylinder 15, a reset spring 18 is provided between the inner wall of the sleeve 14 and the opposite surface of the pressing block 16, the reset spring 18 is sleeved on the outer surface of the connecting rod 17, and a bayonet 21 is provided on the outer surface of the connecting rod 17, limiting balls 20 are evenly arranged inside the operating cylinder 15, and the limiting balls 20 are located in the bayonet 21, and through holes 19 are evenly provided on the outer surface of the operating cylinder 15. The diameter of the limiting ball 20 is slightly larger than the diameter of the through hole 19 , which is used to ensure that one side of the limiting ball 20 can be exposed from the inside of the through hole 19 . The bottom of the slot 13 is trapezoidal, which is used to limit the movement of the limiting ball 20 .

[0033] Everything in the above example works like this:

[0034] When the filler 3 needs to be replaced during use, the worker first manually presses the pressing block 16 with both hands to cause the pressing block 16 to slide inward along the inside of the sleeve 14. At this time, the reset spring 18 is continuously contracted by force, and the connecting rod 17 is forced to slide in the same direction along the inner wall of the operating cylinder 15. Then the bayonet 21 on the connecting rod 17 fits with the two limit balls 20, causing the two limit balls to slide from the inner side of the through hole 19 to the bayonet 21, so that the two limit balls 20 are not in contact with the inner wall of the bottom of the slot 13. Then the worker The worker pulls out the operating cylinder 15 from the slot 13, and then manually rotates the adjusting handle 7 to cause the stopper 9 to rotate along the limiting slot 11, and makes the stopper 9 correspond to the notch of the installation slot 12, and then pulls out the stopper 9 and the limiting collar 10 from the installation slot 12, so that the outer packing gland 6 is separated from the packing chamber 2, and then the outer packing gland 6 is taken out from the transmission shaft 1, and then the inner packing gland 5 is taken out from the transmission shaft 1, so that the outer packing gland 6 and the packing chamber 2 can be quickly separated. The packing 3 is fixed and disassembled between the packing and the packing chamber 2, which can effectively reduce the time required for workers to replace the packing, thereby greatly shortening the downtime of the equipment, reducing production interruptions and improving production efficiency; the packing 3 is placed inside the packing chamber 2, and after the packing is completed, the inner packing gland 5 is first sleeved on the transmission shaft 1, and then the horizontal side of the inner packing gland 5 is aligned with the inner wall of the packing chamber 2, and the horizontal side of the inner packing gland 5 is squeezed to squeeze the packing 3, so that the packing 3 is tighter, and then the outer packing gland 6 is sleeved on the transmission shaft 1, and the convex ring on the inner packing gland 5 is aligned with the groove of the outer packing gland 6 and tightly engaged, thereby achieving the replacement of the packing 3 without removing the transmission shaft 1, and using the double-layer sealing of the inner packing gland 5 and the outer packing gland 6 can greatly improve its sealing effect, thereby effectively avoiding the problem of reduced sealing due to frequent removal of the transmission shaft 1, and at the same time reducing a lot of manpower and time costs, thereby improving the production efficiency of the pump body and fluid handling equipment.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packing device with easily replaceable packing, comprising a transmission shaft (1), wherein a packing chamber (2) is arranged on the outer surface of the transmission shaft (1), wherein the packing chamber (2) is filled with a plurality of packing objects (3), wherein the packing objects (3) are sleeved on the outer surface of the transmission shaft (1), and packing retaining rings (4) are arranged between the packing objects (3), characterized in that: The outer surface of the transmission shaft (1) is sleeved with an inner packing gland (5), and the outer surface of the transmission shaft (1) is sleeved with an outer packing gland (6), the inner packing gland (5) has an L-shaped cross section, the horizontal side of the inner packing gland (5) is located inside the packing chamber (2), and the two are matched, the vertical side of the inner packing gland (5) is installed with a convex ring, and the side of the outer packing gland (6) close to the inner packing gland (5) is provided with a groove, and the convex ring is matched with the groove; A fastening assembly is provided on one side of the outer packing gland (6) for connecting the outer packing gland (6) and the packing chamber (2); a mounting groove (12) is provided on one side of the packing chamber (2) close to the outer packing gland (6); a locking assembly is provided inside the mounting groove (12) for limiting the movement range of the fastening assembly.

2. A packing device for easily replacing packing according to claim 1, characterized in that: The horizontal side of the inner packing gland (5) is in contact with the packing (3), and is used to reduce the gap between the packing (3) to make them closer. The diameter of the vertical side of the inner packing gland (5) is greater than the inner diameter of the packing chamber (2), and its vertical side is in contact with one side of the packing chamber (2), and is used to ensure the sealing between the transmission shaft (1) and the packing chamber (2).

3. A packing device for easily replacing packing according to claim 1, characterized in that: The fastening assembly comprises a rotating shaft (8), the rotating shaft (8) being rotatably mounted on both sides of the outer packing gland (6), an adjusting handle (7) being arranged at one end of the rotating shaft (8), a limiting collar (10) being arranged at the other end of the rotating shaft (8), a stop rod (9) being arranged on the outer surface of the rotating shaft (8), and the stop rod (9) being in close contact with the limiting collar (10).

4. A packing device for easily replacing packing according to claim 3, characterized in that: The blocking rod (9) and the limiting collar (10) are both matched with the notches of the mounting groove (12), which are used to ensure that the blocking rod (9) and the limiting collar (10) can extend into the mounting groove (12). A limiting groove (11) is provided inside the mounting groove (12), and the limiting groove (11) is matched with the blocking rod (9) and is used to limit the rotation range of the blocking rod (9).

5. A packing device for easily replacing packing according to claim 1, characterized in that: The engaging assembly comprises a card slot (13), wherein the card slot (13) is provided on both sides of the stuffing chamber (2), and the card slot (13) is connected to the mounting slot (12), an operating cylinder (15) is slidably arranged inside the card slot (13), a sleeve (14) is arranged at one end of the operating cylinder (15), and the sleeve (14) is located outside the stuffing chamber (2).

6. A packing device for easily replacing packing according to claim 5, characterized in that: A pressing block (16) is slidably provided on the side of the sleeve (14) away from the stuffing chamber (2), a connecting rod (17) is provided on one side of the pressing block (16), and the connecting rod (17) is slidably installed inside the operating cylinder (15), and a return spring (18) is provided between the inner wall of the sleeve (14) and the opposite surface of the pressing block (16), and the return spring (18) is sleeved on the outer surface of the connecting rod (17).

7. A packing device for easily replacing packing according to claim 6, characterized in that: The outer surface of the connecting rod (17) is provided with a bayonet (21), the interior of the operating cylinder (15) is evenly provided with limiting balls (20), and the limiting balls (20) are located in the bayonet (21), and the outer surface of the operating cylinder (15) is evenly provided with through holes (19).

8. A packing device for easily replacing packing according to claim 7, characterized in that: The diameter of the limiting ball (20) is slightly larger than the diameter of the through hole (19), which is used to ensure that one side of the limiting ball (20) can be exposed from the inside of the through hole (19). The bottom of the slot (13) is trapezoidal, which is used to limit the movement of the limiting ball (20).

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