Reactive Dye Cold Pad-Batch Dyeing and Finishing Process for Tubular Cotton Knitted Fabrics

Abstract

The present invention relates to the technical field of cold pad-batch dyeing, specifically to a reactive dye cold pad-batch dyeing and finishing process for tubular cotton knitted fabrics. The knitted fabric is combed and cleaned before dyeing, placed in a dyeing tank for dyeing, and then lifted and leveled by a roller device. The knitted fabric is then stacked layer by layer in a heap dyeing device with manual or mechanical assistance. Under the constant temperature action of the heap dyeing device, the temperature is set to about 30°C-45°C. In response to different external production environments, the fabrics are stacked flatly in a stacking box and relatively softly contacted by the weight of the fabrics themselves, thereby avoiding uneven dyeing and finishing. Then, a rotating component is combined with a constant temperature component to effectively avoid external temperature influencing factors and fabric edge dyeing and finishing defects during the dyeing and finishing process, thereby improving production efficiency. The constant temperature component circulates water, thereby reducing energy loss. The overall device is simple to use and operate, and is worry-free and labor-saving.

Description

Technical Field

[0001] The invention relates to the technical field of cold pad-batch dyeing, in particular to a reactive dye cold pad-batch dyeing and finishing process for tubular cotton knitted fabrics. Background Art

[0002] Reactive dyes are a type of dye. In order to avoid a large amount of water waste and cost investment during the dyeing process of tubular cotton knitted fabrics, reactive dye cold pad-batch dyeing is performed on them.

[0003] In the conventional cold pad-batch dyeing process, the knitted fabric is first subjected to dip dyeing and then rolled and allowed to stand for a period of time before being washed and dried.

[0004] However, during the rolling and static dyeing process, the pile dyeing time is different due to the influence of the external environmental temperature. In addition, during the rolling operation, the tension of the fabric is different, the pile dyeing effect is different, and the edge of the fabric is prone to different color depths, resulting in dyeing and finishing quality defects. Summary of the Invention

[0005] The object of the present invention is to provide a reactive dye cold pad-batch dyeing and finishing process for tubular cotton knitted fabrics, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a tubular cotton knitted fabric reactive dye cold pad-batch dyeing and finishing process, the tubular cotton knitted fabric reactive dye cold pad-batch dyeing and finishing process comprising the following steps:

[0007] Step 1: Comb and clean the knitted fabric before dyeing;

[0008] Step 2: Place the knitted fabric in the dyeing tank for dyeing, and then lift and level it through the roller device;

[0009] Step 3: The knitted fabrics are then stacked layer by layer in a heap dyeing device by manual or mechanical assistance;

[0010] Step 4: Under the constant temperature effect of the pile dyeing treatment device, the temperature is set to about 30℃-45℃ to cope with different external production environments, provide a good color fixing condition for the knitted fabric, and perform a circulating treatment of the constant temperature and smooth flow to reduce water waste;

[0011] Step 5: Through the rotatable characteristics of the pile dyeing device, the edges and corners of the knitted fabric can also maintain good dye contact during the pile dyeing process, thereby improving dyeing quality and efficiency;

[0012] Step 6: Wash and dry the knitted fabric after pile dyeing, then roll it up or cut it into pieces to complete the production of the knitted fabric product.

[0013] A heap dyeing treatment device is applied to the above-mentioned tubular cotton knitted fabric reactive dye cold pad heap dyeing and finishing process, and the heap dyeing treatment device includes:

[0014] The pool body has a water tank at the upper end and two bearing seats vertically symmetrically arranged on both sides of the upper end of the pool body;

[0015] A stacking box, wherein two connecting columns are horizontally symmetrically provided on both sides of the stacking box, and the two connecting columns are respectively connected to two bearing seats through bearings;

[0016] A rotating assembly, wherein the rotating assembly is movably connected to the connecting column, and the rotating assembly includes a rotating table;

[0017] A top cover, the top cover is arranged on the upper end of the stacking box through a lifting assembly, and the lifting assembly includes two lifting plates and two erection frames;

[0018] A constant temperature assembly, the constant temperature assembly comprising a plurality of partition plates, wherein the plurality of partition plates are respectively arranged in the stacking box and the top cover;

[0019] The release assembly includes a plurality of one-way cylinders, and the plurality of one-way cylinders are respectively and symmetrically arranged on both sides of the upper end of the top cover.

[0020] Preferably, a plurality of driving teeth are symmetrically provided on one side of the rotating table, and driving motors are horizontally symmetrically provided on both sides of the upper end of the pool body. The driving shafts of the driving motors are sleeved with driving gears, and one side of the driving gear is meshed with the driving teeth on one side.

[0021] Preferably, a receiving groove is provided on the upper end of the pool body near the connecting column, and guide rod limit seats are vertically and symmetrically provided on both sides of the receiving groove, which are inserted into the receiving groove and movably sleeved with two guide rods. A lifting cylinder is vertically provided at the lower end of the receiving groove, and the upper end of the lifting cylinder is connected to the lower end of the limit seat. A limiting groove is provided at the upper end of the limit seat, and one side of the limiting groove of the limit seat passes through and is inserted into the upper end of the receiving groove. A limiting block is welded on one side of the lower end of the connecting column, and the lower end of the limit block is inserted into the limiting groove.

[0022] Preferably, the two erection frames are horizontally symmetrically arranged on both sides of the top cover, and the two lifting plates are respectively and vertically arranged on the upper end of the rotating platform. Two sliding grooves are provided through the upper ends of the lifting plates. The two erection frames are respectively and horizontally penetrated through the two sliding grooves of the two lifting plates. A hydraulic cylinder is vertically provided in the center of the upper end of the lifting plate, and the lower end of the hydraulic cylinder is connected to the upper end of the erection frame.

[0023] Preferably, the side walls and top cover of the stacking box are both cavity structures, and several partition plates are respectively arranged in the cavities of the stacking box and the top cover. The two sides of several partition plates are respectively welded to the two sides of the cavity, and the partition plates in the stacking box are symmetrically provided with several water holes.

[0024] Preferably, the connecting column is a hollow cylindrical structure, and a connecting groove is provided on the connecting column and one side of the cavity. Pipe interfaces are provided on both sides of the water tank and penetrate the pool body respectively. Circulation pipes are sealed and plugged into the pipe interfaces. One side of the two circulation pipes is respectively connected to the hollow structure side of the connecting column through a sealing bearing. The circulation pipe is arranged in a U-shaped structure, and the vertical height of the lifting plate is less than the vertical length of one side of the circulation pipe.

[0025] Preferably, a number of docking ports are symmetrically provided on both sides of the upper end of the stacking box and vertically penetrate the cavity. A number of docking tubes are vertically symmetrically provided at the lower end of the top cover. The number of docking tubes are respectively inserted into the number of docking port settings. The upper ends of the docking tubes inserted into the docking ports are sleeved with sealing sleeves. Water troughs are provided between several adjacent partitions in the top cover. The number of docking tubes are connected to the water trough settings. A number of drainage grooves are horizontally provided at the upper end of the top cover, and one side of the number of drainage grooves is respectively connected to the number of water trough settings.

[0026] Preferably, several of the one-way cylinders are respectively connected to one side of the drainage groove, a drainage hole is opened through one side of the one-way cylinder, a guide cylinder is provided on the side of the one-way cylinder close to the drainage hole, and several strip grooves are symmetrically opened on four sides of the guide cylinder. The length of the strip groove accounts for two-thirds of the length of the guide cylinder, and a spring partition is provided on one side of the one-way cylinder. A piston rod is movably inserted through the center of the spring partition, and a piston is sleeved on one side of the piston rod. The piston is movably inserted into the guide cylinder, and the piston rod is sleeved with a spring between the piston and the spring partition.

[0027] Preferably, a plurality of synchronization rods are symmetrically provided on one side of the piston rod, and a plurality of synchronization rods are movably provided on one side of the one-way cylinder, and a plurality of synchronization rods are provided on one side of the one-way cylinder to jointly provide a contact block, and a side surface of the contact block is provided with a conical structure, and a contact bar is provided horizontally at the center of the lower end of the water tank, and both sides of the upper end of the abutment bar are inclined surfaces, and when the stacking box rotates, the contact blocks of the one-way cylinders on one side of the top cover are respectively in contact with one side of the abutment bar.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] By stacking the fabrics flatly in the stacking box and using the fabrics' own gravity for relatively soft contact, uneven dyeing and finishing can be avoided. Then, by using the rotating component in conjunction with the constant temperature component, external temperature factors affecting the dyeing and finishing process and dyeing and finishing defects on the edges of the fabrics can be effectively avoided, thereby improving production efficiency. The constant temperature component circulates water to reduce energy loss, and the overall device is easy to use and operate, saving worry and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the top cover connection structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection structure of the erection frame of the present invention;

[0033] Figure 4 This is a schematic diagram of the connection structure of the drive motor of the present invention;

[0034] Figure 5 This is a schematic diagram of the installation structure of the limit seat of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the connecting groove of the present invention;

[0036] Figure 7 It is a schematic cross-sectional view of the structure of the present invention.

[0037] In the figure: pool body 1, water tank 2, bearing seat 3, stacking box 4, top cover 5, connecting column 6, erection frame 7, rotating table 8, lifting plate 9, slide 10, hydraulic cylinder 11, driving teeth 12, driving motor 13, limit seat 14, lifting cylinder 15, partition plate 16, water hole 17, docking pipe 18, connecting groove 19, drainage groove 20, one-way cylinder 21, drainage hole 22, piston 23, piston rod 24, synchronization rod 25, contact block 26, circulation pipe 27, limit block 28, abutment strip 29. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Please see the attached Figure 1-7 , this application provides the following five preferred embodiments.

[0040] Example 1

[0041] The reactive dye cold pad-batch dyeing and finishing process for tubular cotton knitted fabric comprises the following steps:

[0042] Step 1: Comb and clean the knitted fabric before dyeing;

[0043] Step 2: Place the knitted fabric in the dyeing tank for dyeing, and then lift and level it through the roller device;

[0044] Step 3: The knitted fabrics are then stacked layer by layer in a heap dyeing device by manual or mechanical assistance;

[0045] Step 4: Under the constant temperature effect of the pile dyeing treatment device, the temperature is set to about 30℃-45℃ to cope with different external production environments, provide a good color fixing condition for the knitted fabric, and perform a circulating treatment of the constant temperature and smooth flow to reduce water waste;

[0046] Step 5: Through the rotatable characteristics of the pile dyeing device, the edges and corners of the knitted fabric can also maintain good dye contact during the pile dyeing process, thereby improving dyeing quality and efficiency;

[0047] Step 6: Wash and dry the knitted fabric after pile dyeing, then roll it up or cut it into pieces to complete the production of the knitted fabric product.

[0048] A heap dyeing treatment device is applied to the above-mentioned tubular cotton knitted fabric reactive dye cold pad heap dyeing and finishing process, and the heap dyeing treatment device includes:

[0049] A tank body 1, wherein a water tank 2 is provided at the upper end of the tank body 1, and two bearing seats 3 are vertically symmetrically provided on both sides of the upper end of the tank body 1;

[0050] A stacking box 4, wherein two connecting columns 6 are horizontally symmetrically provided on both sides of the stacking box 4, and the two connecting columns 6 are respectively connected to the two bearing seats 3 through bearings;

[0051] A rotating assembly is provided, wherein the rotating assembly is movably sleeved through a bearing to connect the connecting column 6, and the rotating assembly includes a rotating table 8, and a plurality of driving teeth 12 are symmetrically provided on one side of the rotating table 8. A driving motor 13 is horizontally symmetrically provided on both sides of the upper end of the pool body 1. The driving shaft of the driving motor 13 is sleeved with a driving gear, and one side of the driving gear is meshed with the driving teeth 12 on one side. A receiving groove is provided on one side of the upper end of the pool body 1 near the connecting column 6, and a guide rod limit seat 14 is vertically symmetrically provided on both sides of the receiving groove, which is inserted into the receiving groove and movably sleeved with two guide rods. A lifting cylinder 15 is vertically provided at the lower end of the receiving groove, and the upper end of the lifting cylinder 15 is connected to the lower end of the limit seat 14. A limiting groove is provided on the upper end of the limit seat 14, and one side of the limiting groove of the limit seat 14 passes through and is inserted into the upper end of the receiving groove. A limiting block 28 is welded on one side of the lower end of the connecting column 6, and the lower end of the limit block 28 is inserted into the limiting groove;

[0052] The top cover 5 is provided at the upper end of the stacking box 4 through a lifting assembly, and the lifting assembly includes two lifting plates 9 and two erection frames 7. The two erection frames 7 are horizontally symmetrically arranged on both sides of the top cover 5. The two lifting plates 9 are respectively and vertically arranged on the upper end of the rotating table 8. The upper ends of the lifting plates 9 are penetrated by two slide grooves 10. The two erection frames 7 are respectively and horizontally penetrated by the two slide grooves 10 for inserting the two lifting plates 9. A hydraulic cylinder 11 is vertically provided in the center of the upper end of the lifting plate 9, and the lower end of the hydraulic cylinder 11 is connected to the upper end of the erection frame 7;

[0053] Thermostatic assembly, the thermostatic assembly includes a number of partitions 16, and the partitions 16 are respectively arranged in the stacking box 4 and the top cover 5, the side walls of the stacking box 4 and the top cover 5 are cavity structures, the partitions 16 are respectively arranged in the cavities of the stacking box 4 and the top cover 5, the two sides of the partitions 16 are respectively welded to the two sides of the cavity, and the partitions 16 in the stacking box 4 are symmetrically provided with a number of water holes 17, the connecting column 6 is a hollow cylindrical structure, the connecting column 6 is connected to one side of the cavity and a connecting groove 19 is opened, and the two sides of the water tank 2 are respectively penetrated. The pool body 1 is provided with a pipe interface, and a circulation pipe 27 is sealed and plugged in the pipe interface. One side of the two circulation pipes 27 is respectively connected to the hollow structure of the connecting column 6 through a sealed bearing. The circulation pipe 27 is arranged in a U-shaped structure, and the vertical height of the lifting plate 9 is less than the vertical side length of the circulation pipe 27. A water trough is provided between several adjacent partitions 16 in the top cover 5, and several docking pipes 18 are connected to the water trough. Several drainage grooves 20 are horizontally opened at the upper end of the top cover 5, and one side of the several drainage grooves 20 is respectively connected to several water troughs.

[0054] The release assembly includes a plurality of one-way cylinders 21, and the plurality of one-way cylinders 21 are symmetrically arranged on both sides of the upper end of the top cover 5, and the plurality of one-way cylinders 21 are respectively connected to one side of the drainage groove 20. A drainage hole 22 is opened on one side of the one-way cylinder 21, and a guide cylinder is provided on the side of the one-way cylinder 21 near the drainage hole 22. A plurality of synchronization rods 25 are symmetrically provided on one side of the piston rod 24, and one side of the plurality of synchronization rods 25 are respectively movably arranged to pass through one side of the one-way cylinder 21.

[0055] Example 2

[0056] On the basis of Example 1, a number of docking ports are symmetrically provided on both sides of the upper end of the stacking box 4 through the cavity vertically, and a number of docking tubes 18 are vertically symmetrically provided at the lower end of the top cover 5. The several docking tubes 18 are respectively inserted into the several docking ports. The upper ends of the docking tubes 18 are sleeved with sealing sleeves, which cooperate with the part of the top cover 5 inserted into the stacking box 4 to drive the stacking box 4 to rotate and enhance the sealing effect of the connection.

[0057] Example 3

[0058] On the basis of Example 2, a number of strip grooves are symmetrically opened on the four sides of the guide cylinder, and the length of the strip grooves accounts for two-thirds of the length of the guide cylinder. A spring partition is provided on one side of the one-way cylinder 21, and a piston rod 24 is movably inserted through the center of the spring partition. A piston 23 is sleeved on one side of the piston rod 24. The piston 23 is movably inserted into the guide cylinder, and a spring is sleeved between the piston rod 24 and the spring partition. When the contact block 26 is not squeezed, the piston 23 automatically blocks the drainage hole 22, thereby improving the constant temperature heat exchange efficiency and reducing the constant temperature cost.

[0059] Example 4

[0060] On the basis of Example 3, several synchronization rods 25 pass through one side of the one-way cylinder 21 and are jointly provided with a contact block 26. One side of the contact block 26 is set as a conical structure. A contact strip 29 is horizontally provided at the center of the lower end of the water tank 2. The contact block 26 is set as an annular structure to facilitate the discharge of water from the one-way cylinder 21 and avoid obstruction.

[0061] Example 5

[0062] On the basis of the fourth embodiment, both sides of the upper end of the abutment bar 29 are arranged as inclined surfaces, and when the stacking box 4 rotates, the contact blocks 26 of several one-way cylinders 21 on one side of the top cover 5 respectively contact one side of the abutment bar 29 to reduce wear and prevent jamming.

[0063] When in use, the knitted fabric is combed and cleaned before being dipped and dyed;

[0064] Step 2: Place the knitted fabric in the dyeing tank for dyeing treatment, then lift and level it through a roller device, and then stack the knitted fabric layer by layer in the stacking dyeing device with manual or mechanical assistance. The circulating water in the water tank 2 is heated and enters the cavity of the stacking box 4 from the circulation pipe 27. Under the heat absorption effect of the multi-layer contact block 26, the heat exchange efficiency and quality of the stacking box 4 are improved. Then, it enters the top cover 5 through the docking pipe 18 to perform constant temperature treatment on the surface of the knitted fabric. After that, when the driving motor 13 drives the driving teeth 12 of the rotary table 8 to control the rotation of the rotary table 8, the top cover 5 rotates synchronously with the stacking box 4. The rotation speed is adjustable and reciprocating rotation is performed to improve the dyeing effect of the edge of the knitted fabric. When the top cover 5 needs to be opened, the two hydraulic cylinders 11 pull the top cover 5 up along the slide 10, and the limit seat 14 limits the limit block 28 of the connecting column 6 under the action of the cylinder, and the rotary The turntable 8 controls the top cover 5 to rotate to one side of the stacking box 4, so that the knitted fabric can be taken out. The operation is simple and easy to use. In the process of rotation of the stacking box 4, the contact blocks 26 of several one-way cylinders 21 are respectively squeezed and contacted with the abutment strips 29, and the drainage holes 22 are automatically opened to circulate and discharge water. The circulating water rich in heat is also heated, which saves costs and saves water waste. Under the constant temperature effect of the pile dyeing treatment device, the temperature is set to about 30℃-45℃. In response to different external production environments, a good color fixing condition is provided for the knitted fabric, and the constant temperature is circulated and processed smoothly to reduce water waste. Through the rotatable characteristics of the pile dyeing treatment device, the knitted fabric can also maintain good dye contact on the corners during the pile dyeing process, thereby improving dyeing quality and efficiency. The knitted fabric after pile dyeing is washed and dried, and then rolled or slit to complete the production of knitted fabric products.

[0065] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The heap dyeing device is characterized in that: include: A tank body (1), wherein a water tank (2) is provided at the upper end of the tank body (1), and two bearing seats (3) are vertically symmetrically provided on both sides of the upper end of the tank body (1); A stacking box (4), wherein two connecting columns (6) are horizontally symmetrically provided on both sides of the stacking box (4), and the two connecting columns (6) are respectively connected to the two bearing seats (3) through bearings; A rotating assembly, wherein the rotating assembly is provided with a movable sleeve connecting column (6), and the rotating assembly includes a rotating table (8); A top cover (5), the top cover (5) is arranged on the upper end of the stacking box (4) through a lifting assembly, and the lifting assembly includes two lifting plates (9) and two erection frames (7); A constant temperature component, the constant temperature component comprising a plurality of partition plates (16), and the plurality of partition plates (16) are respectively arranged in the stacking box (4) and the top cover (5); A release assembly, the release assembly comprising a plurality of one-way cylinders (21), and the plurality of one-way cylinders (21) are respectively and symmetrically arranged on both sides of the upper end of the top cover (5); The side walls and the top cover (5) of the stacking box (4) are both arranged as cavity structures, and a plurality of partition plates (16) are respectively arranged in the cavities of the stacking box (4) and the top cover (5). Both sides of the plurality of partition plates (16) are respectively welded to both sides of the cavity, and the partition plates (16) in the stacking box (4) are symmetrically provided with a plurality of water holes (17); The connecting column (6) is a hollow cylindrical structure, and a connecting groove (19) is provided on one side of the connecting column (6) and the cavity. Pipe interfaces are provided on both sides of the water tank (2) and penetrate the pool body (1). Circulation pipes (27) are sealed and plugged into the pipe interfaces. One side of the two circulation pipes (27) is respectively plugged into the hollow structure side of the connecting column (6) through a sealing bearing. The circulation pipes (27) are U-shaped, and the vertical height of the lifting plate (9) is less than the vertical length of one side of the circulation pipe (27). The stacking box (4) has a plurality of docking ports symmetrically provided on both sides of the upper end thereof vertically penetrating the cavity, and a plurality of docking pipes (18) are symmetrically provided on the lower end of the top cover (5), and the plurality of docking pipes (18) are respectively inserted into the plurality of docking ports, and the upper ends of the docking pipes (18) inserted into the docking ports are sleeved with sealing sleeves, and a plurality of adjacent partition plates (16) in the top cover (5) are provided with water troughs, and the plurality of docking pipes (18) are connected to the water troughs, and a plurality of drainage grooves (20) are horizontally provided on the upper end of the top cover (5), and one side of the plurality of drainage grooves (20) is respectively connected to the plurality of water troughs; The plurality of one-way cylinders (21) are respectively connected to one side of the drainage groove (20), a drainage hole (22) is provided through one side of the one-way cylinder (21), a guide cylinder is provided near the drainage hole (22) in the one-way cylinder (21), a plurality of strip grooves are symmetrically provided on four sides of the guide cylinder, and the length of the strip grooves accounts for two-thirds of the length of the guide cylinder, a partition is provided on one side of the one-way cylinder (21), a spring partition is provided, a piston rod (24) is provided in the center of the spring partition, a piston (23) is provided on one side of the piston rod (24), and the piston (23) is provided in a sleeve manner in the guide cylinder, and the piston rod (24) is provided between the piston (23) and the spring partition and is sleeved with a spring; A plurality of synchronization rods (25) are symmetrically provided on one side of the piston rod 24. One side of the plurality of synchronization rods (25) is movably provided through one side of the one-way cylinder (21). The plurality of synchronization rods (25) are provided with a contact block (26) on one side of the one-way cylinder (21). One side of the contact block (26) is provided with a conical structure. A contact bar (29) is provided horizontally at the center of the lower end of the water tank (2). Both sides of the upper end of the contact bar (29) are inclined surfaces. When the stacking box (4) rotates, the contact blocks (26) of the plurality of one-way cylinders (21) on one side of the top cover (5) are respectively in contact with one side of the contact bar (29).

2. The heap dyeing device according to claim 1, characterized in that: A plurality of driving teeth (12) are symmetrically provided on one side of the rotating platform (8), and driving motors (13) are horizontally symmetrically provided on both sides of the upper end of the pool body (1). A driving gear is sleeved on the driving shaft of the driving motor (13), and one side of the driving gear is meshed and connected with the driving teeth (12) on one side.

3. The heap dyeing device according to claim 2, characterized in that: The upper end of the pool body (1) is provided with a receiving groove on one side close to the connecting column (6), and guide rod limit seats (14) are vertically and symmetrically provided on both sides of the receiving groove, which are inserted into the receiving groove and movably sleeved with two guide rods. A lifting cylinder (15) is vertically provided at the lower end of the receiving groove, and the upper end of the lifting cylinder (15) is connected to the lower end of the limit seat (14). A limiting groove is provided at the upper end of the limit seat (14), and one side of the limiting groove of the limit seat (14) passes through and is inserted into the upper end of the receiving groove. A limiting block (28) is welded on one side of the lower end of the connecting column (6), and the lower end of the limiting block (28) is inserted into the limiting groove.

4. The heap dyeing device according to claim 3, characterized in that: The two erection frames (7) are horizontally symmetrically arranged on both sides of the top cover (5), and the two lifting plates (9) are respectively and vertically arranged on the upper end of the rotating platform (8). Two slide grooves (10) are provided through the upper ends of the lifting plates (9). The two erection frames (7) are respectively and horizontally penetrated through the two slide grooves (10) of the two lifting plates (9) for plugging. A hydraulic cylinder (11) is vertically provided at the center of the upper end of the lifting plate (9), and the lower end of the hydraulic cylinder (11) is connected to the upper end of the erection frame (7).

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