Double-acting wax grain forming machine

Abstract

The utility model relates to the technical field of wax grain forming machines, and provides a double-acting wax grain forming machine which is characterized by comprising a wax melting groove and a wax dripping pipe sleeve, a group of wax liquid via holes are formed in the bottom of the wax melting groove, and all the wax liquid via holes are arranged in the length direction of the wax melting groove; the wax dripping pipe sleeve is rotationally arranged on the periphery of the wax melting groove, material distribution hole sets are formed in the wax dripping pipe sleeve, all the material distribution hole sets are arranged in the circumferential direction of the wax dripping pipe sleeve, and all the material distribution holes of the same material distribution hole set are arranged in the axial direction of the wax dripping pipe sleeve. By means of the technical scheme, the problems that in the related technology, wax dripping is conducted on the multiple material distribution holes of the wax dripping pipe sleeve at the same time, multiple pieces of wax liquid arranged in the radial direction of the wax dripping pipe sleeve are likely to adhere together after being dripped to the rotating cooling roller, and the granulation effect can be affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wax particle forming machines, in particular to a double-action wax particle forming machine. Background Art

[0002] Wax pellet forming machine is a kind of mechanical equipment specially used to process paraffin raw materials into particles of specific particle size, which is widely used in the production process of paraffin products. The wax dripping tube sleeve and cooling drum are commonly used parts of wax pellet forming machine. There are many feeding holes on the wax dripping tube sleeve, and multiple feeding holes will drip wax at the same time. Multiple wax droplets arranged radially along the wax dripping tube sleeve are easy to adhere to each other after falling on the rotating cooling drum, which will affect the granulation effect. Utility Model Content

[0003] The utility model provides a double-action wax pellet forming machine, which solves the problem in the related art that multiple distribution holes of a wax dripping tube sleeve drip wax simultaneously, and multiple wax droplets radially arranged along the wax dripping tube sleeve are easily adhered together after landing on a rotating cooling drum, thus affecting the pelletizing effect.

[0004] The technical solution of the utility model is as follows: a double-action wax particle forming machine, the key is: including,

[0005] A wax melting tank, wherein a group of wax liquid through holes are opened at the bottom of the wax melting tank, and all the wax liquid through holes are arranged along the length direction of the wax melting tank;

[0006] A wax dripping tube sleeve, the wax dripping tube sleeve is rotatably arranged on the periphery of the wax melting tank, a distribution hole group is opened on the wax dripping tube sleeve, all the distribution hole groups are arranged along the circumferential direction of the wax dripping tube sleeve, and all the distribution holes of the same distribution hole group are arranged along the axial direction of the wax dripping tube sleeve.

[0007] Also includes,

[0008] Sealing head, the two ends of the wax dripping tube sleeve are rotatably arranged on the sealing head at the corresponding end;

[0009] A positioning sleeve, the positioning sleeve is located inside the wax dripping tube sleeve, the positioning sleeve is mounted between the sealing heads at both ends, and the bottom of the wax melting groove passes through the positioning sleeve and extends between the positioning sleeve and the wax dripping tube sleeve;

[0010] A heating component is arranged inside the positioning sleeve and is used to heat the wax liquid in the wax melting tank.

[0011] It also includes a wax inlet pipeline, and contact seals are formed between the two ends of the positioning sleeve and the sealing head, and between the two ends of the wax dripping tube sleeve and the sealing head. A mounting hole for passing the wax inlet pipeline and the heating component is opened on the sealing head, and the wax inlet pipeline is used to feed the wax melting tank.

[0012] Also includes,

[0013] An air outlet pipe, the inlet end of which is communicated with the interior of the positioning sleeve, and the outlet end of which is located outside the sealing head;

[0014] An air outlet valve is arranged at the outlet end of the air outlet pipe.

[0015] The wax inlet pipeline is erected above the wax melting tank, and a group of wax outlet holes are opened at the bottom of the wax inlet pipeline, and all the wax outlet holes are arranged along the length direction of the wax inlet pipeline.

[0016] The heating component comprises:

[0017] A heating medium inlet pipe, wherein the heating medium inlet pipe is located at one side of the wax melting tank;

[0018] A heating medium discharge pipe, wherein the heating medium discharge pipe is located at the other side of the wax melting tank, the outlet end of the heating medium inlet pipe and the inlet end of the heating medium discharge pipe are located at the same end of the wax melting tank and are connected, the inlet end of the heating medium inlet pipe and the outlet end of the heating medium discharge pipe are located at the same end of the wax melting tank and pass through the same mounting hole on the sealing head.

[0019] Also includes,

[0020] a rotary drive mechanism having an output shaft;

[0021] a first driving gear, the first driving gear being arranged on the output shaft of the rotary drive mechanism;

[0022] A first driven gear, wherein the first driven gear is arranged at the periphery of the wax dripping tube sleeve, and the first driven gear is meshed with the first driving gear.

[0023] Also includes,

[0024] A frame, on which the sealing head is mounted;

[0025] A cooling drum, the cooling drum is rotatably arranged on the frame, and the cooling drum is located below the wax dripping pipe sleeve;

[0026] A scraper plate, the scraper plate is located on the side of the cooling drum that is screwed in at the lowest point;

[0027] A grain collecting box is arranged below the grain scraping plate.

[0028] It also includes a scraper plate pressure bar, both ends of the scraper plate are rotatably connected to the frame, the scraper plate is overlapped with the scraper plate pressure bar, and the scraper plate pressure bar has the freedom of movement to approach or move away from the cooling drum.

[0029] It also includes a condensing coil, which is arranged on the periphery of the cooling drum. A wax particle channel is left between the condensing coil and the cooling drum, and the wax dripping pipe sleeve is located between two adjacent condensing coils.

[0030] The working principle and beneficial effects of the utility model are as follows: a group of wax liquid through holes are provided at the bottom of the wax melting tank, and all the wax liquid through holes are arranged along the length direction of the wax melting tank; a wax dripping tube sleeve is rotatably arranged at the periphery of the wax melting tank, and a group of cloth holes are provided on the wax dripping tube sleeve, and all the cloth hole groups are arranged along the circumferential direction of the wax dripping tube sleeve, and all the cloth holes of the same cloth hole group are arranged along the axial direction of the wax dripping tube sleeve. During the rotation of the wax dripping tube sleeve, when the cloth holes on the wax dripping tube sleeve pass through the wax liquid through holes at the bottom of the wax melting tank, the wax liquid flowing out through the wax liquid through holes of the wax melting tank drips out from the cloth holes on the wax dripping tube sleeve and falls onto the rotating cooling drum, so that only one group of cloth holes arranged along the axial direction of the wax dripping tube sleeve drips wax each time, and there is no situation where multiple cloth hole groups drip wax at the same time, which can effectively prevent the wax liquid from adhering to the rotating cooling drum after dripping. The granulation effect can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0032] Figure 1 It is a schematic diagram of the internal structure of the wax dripping tube sleeve in the utility model.

[0033] Figure 2 It is a schematic diagram of the connection structure between the wax dripping tube sleeve and the sealing head in the utility model.

[0034] Figure 3 It is a front view of the wax dripping tube sleeve and the cooling drum in the utility model.

[0035] Figure 4 It is a left view of the wax dripping tube sleeve and the cooling drum in the utility model.

[0036] In the figure: 1, wax melting tank, 2, wax liquid through hole, 3, wax dripping pipe sleeve, 4, cloth hole, 5, sealing head, 6, positioning sleeve, 7, heating component, 7-1, heating medium inlet pipe, 7-2, heating medium outlet pipe, 8, wax inlet pipeline, 9, air outlet pipe, 10, air outlet valve, 11, rotary drive mechanism, 12, first driving gear, 13, first driven gear, 14, frame, 15, cooling drum, 16, scraper plate, 17, grain collecting box, 18, scraper plate pressure bar, 19, condensing coil, 20, wax outlet hole, 21, second driving gear, 22, second driven gear, 23, water inlet, 24, water outlet. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0038] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0039] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] Example, see Figure 1 , Figure 2 , Figure 3 and Figure 4, which is an embodiment of the utility model, proposes a double-action wax particle forming machine, including a wax melting tank 1, a group of wax liquid through holes 2 are opened at the bottom of the wax melting tank 1, all of the wax liquid through holes 2 are arranged along the length direction of the wax melting tank 1, and also includes a wax dripping tube sleeve 3, the wax dripping tube sleeve 3 is rotatably arranged on the periphery of the wax melting tank 1, a distribution hole group is opened on the wax dripping tube sleeve 3, all of the distribution hole groups are arranged along the circumferential direction of the wax dripping tube sleeve 3, and all the distribution holes 4 of the same distribution hole group are arranged along the axial direction of the wax dripping tube sleeve 3.

[0042] Furthermore, if Figure 2 and Figure 3 As shown, it also includes a sealing head 5, a positioning sleeve 6, and a heating component 7. The two ends of the wax dripping tube sleeve 3 are respectively rotatably arranged on the sealing heads 5 at the corresponding ends; the positioning sleeve 6 is located inside the wax dripping tube sleeve 3, and the positioning sleeve 6 is mounted between the sealing heads 5 at both ends. The bottom of the wax melting tank 1 passes through the positioning sleeve 6 and extends between the positioning sleeve 6 and the wax dripping tube sleeve 3; the heating component 7 is arranged inside the positioning sleeve 6 to heat the wax liquid in the wax melting tank 1. The sealing head 5 can support and position the positioning sleeve 6 and the wax dripping tube sleeve 3, and the positioning sleeve 6 can support and position the wax melting tank 1 and the heating component 7, which does not affect the normal rotation of the wax dripping tube sleeve 3 and facilitates the positioning and installation of each component.

[0043] Furthermore, if Figure 1 and Figure 4 As shown, it also includes a wax inlet pipe 8, and contact seals are formed between the two ends of the positioning sleeve 6 and the sealing head 5, and between the two ends of the wax dripping pipe sleeve 3 and the sealing head 5. The sealing head 5 is provided with mounting holes for passing the wax inlet pipe 8 and the heating component 7. The wax inlet pipe 8 is used to feed the wax melting tank 1. The wax melting tank 1 and the heating component 7 are sealed between the sealing head 5 and the positioning sleeve 6, which can reduce the loss of heat generated by the heating component 7. The wax inlet pipe 8 can be used to feed the wax melting tank 1 at any time without disassembling the sealing head 5, which is simpler and more convenient.

[0044] Furthermore, if Figure 2 and Figure 3 As shown, it also includes an air outlet pipe 9 and an air outlet valve 10. The inlet end of the air outlet pipe 9 is connected to the inside of the positioning sleeve 6, and the outlet end of the air outlet pipe 9 is located outside the sealing head 5. The air outlet valve 10 is arranged at the outlet end of the air outlet pipe 9. The air outlet valve 10 can be opened regularly so that the hot air inside the positioning sleeve 6 is discharged through the air outlet pipe 9 and the air outlet valve 10.

[0045] Furthermore, if Figure 1 and Figure 4 As shown, the wax inlet pipe 8 is erected above the wax melting tank 1, and a group of wax outlet holes 20 are opened at the bottom of the wax inlet pipe 8, and all the wax outlet holes 20 are arranged along the length direction of the wax inlet pipe 8. In this way, the wax liquid can have multiple dripping points in the wax melting tank 1, and the wax liquid is more evenly distributed in the wax melting tank 1, and the heating is more evenly.

[0046] Furthermore, if Figure 1 and Figure 4 As shown, the heating component 7 includes a heating medium inlet pipe 7-1 and a heating medium outlet pipe 7-2. The heating medium inlet pipe 7-1 is located at one side of the wax melting tank 1; the heating medium outlet pipe 7-2 is located at the other side of the wax melting tank 1. The outlet end of the heating medium inlet pipe 7-1 and the inlet end of the heating medium outlet pipe 7-2 are located at the same end of the wax melting tank 1 and are connected. The inlet end of the heating medium inlet pipe 7-1 and the outlet end of the heating medium outlet pipe 7-2 are located at the same end of the wax melting tank 1 and pass through the same mounting hole on the sealing head 5. The heating medium, such as heat transfer oil, enters the wax dripping pipe sleeve 3 through the heating medium inlet pipe 7-1, and then flows out of the wax dripping pipe sleeve 3 through the heating medium outlet pipe 7-2. During the flow, the wax liquid in the wax melting tank 1 is heated. The structure is simple and easy to use.

[0047] Furthermore, if Figure 2 and Figure 3 As shown, it also includes a rotary drive mechanism 11, a first driving gear 12, and a first driven gear 13. The rotary drive mechanism 11 has an output shaft; the first driving gear 12 is arranged on the output shaft of the rotary drive mechanism 11; the first driven gear 13 is arranged on the periphery of the wax dripping tube sleeve 3, and the first driven gear 13 is meshed with the first driving gear 12. The rotary drive mechanism 11 drives the first driving gear 12 to rotate, the first driving gear 12 drives the first driven gear 13 to rotate, and the first driven gear 13 drives the wax dripping tube sleeve 3 to rotate synchronously, and the mechanized operation saves time and effort.

[0048] Furthermore, if Figure 3 and Figure 4 As shown, it also includes a frame 14, a cooling drum 15, a particle scraping plate 16, a particle collecting box 17, and a sealing head 5 is mounted on the frame 14; the cooling drum 15 is rotatably arranged on the frame 14, and the cooling drum 15 is located below the wax dripping pipe sleeve 3; the particle scraping plate 16 is located on the side of the cooling drum 15 that is screwed in at the lowest point; and the particle collecting box 17 is arranged below the particle scraping plate 16.

[0049] like Figure 3 As shown, the left and right sealing heads 5 are respectively mounted on the left frame 14 and the right frame 14, and the wax dripping tube sleeve 3 is rotatably arranged between the left and right sealing heads 5. Figure 4As shown, taking the clockwise rotation of the cooling drum 15 as an example, the scraper plate 16 is located in front of the cooling drum 15. During the clockwise rotation of the cooling drum 15, when the wax particles on the cooling drum 15 contact the scraper plate 16, the wax particles are separated from the cooling drum 15 and fall into the particle collecting box 17 under the blocking effect of the scraper plate 16, so that the wax particles can be automatically collected. Moreover, after the wax liquid falls on the cooling drum 15, it rotates with the cooling drum 15. When it reaches the scraper plate 16, the wax particles formed after cooling are scraped off by the scraper plate 16, so that the wax liquid has a sufficiently long contact time with the cooling drum 15, which can ensure that the wax liquid is cooled into wax particles.

[0050] Furthermore, if Figure 4 As shown, the scraper plate 16 also includes a scraper plate pressure bar 18, both ends of the scraper plate 16 are rotatably connected to the frame 14, the scraper plate 16 overlaps the scraper plate pressure bar 18, and the scraper plate pressure bar 18 has the freedom of movement to approach or move away from the cooling drum 15. The upper end of the scraper plate 16 overlaps the scraper plate pressure bar 18, and the middle part of the scraper plate 16 is rotatably connected to the frame 14. By changing the distance from the scraper plate pressure bar 18 to the cooling drum 15, the inclination angle of the scraper plate 16 can be changed, thereby changing the distance between the lower end of the scraper plate 16 and the cooling drum 15. Under the premise of ensuring that the scraper plate 16 does not contact the cooling drum 15, the wax particles can be accurately scraped off to better meet the use requirements.

[0051] Furthermore, if Figure 4 As shown, it also includes a condensing coil 19, which is arranged on the periphery of the cooling drum 15, and a wax particle channel is left between the condensing coil 19 and the cooling drum 15, and the wax dripping pipe sleeve 3 is located between two adjacent condensing coils 19. The condensing coil 19 is added on the periphery of the cooling drum 15, so that the wax liquid is condensed by the cooling drum 15 and the condensing coil 19 at the same time, which can better ensure that the wax liquid is cooled into wax particles.

[0052] In this embodiment, the cooling drum 15 is mounted between the left and right frames 14, the sealing head 5 is arranged above the frame 14, the wax dripping tube sleeve 3 is rotatably arranged between the left and right sealing heads 5 and is coaxially arranged with the sealing head 5, the wax dripping tube sleeve 3 is located above the cooling drum 15, the wax melting tank 1, the heating component 7 and the wax inlet pipe 8 are all arranged inside the positioning sleeve 6, the wax dripping tube sleeve 3 is rotatably arranged on the periphery of the positioning sleeve 6, a wax outlet hole 20 is opened at the bottom of the wax inlet pipe 8, a wax liquid through hole 2 is opened at the bottom of the wax melting tank 1, and a distribution hole group is opened on the wax dripping tube sleeve 3, all the distribution hole groups are arranged along the circumferential direction of the wax dripping tube sleeve 3, and all the distribution holes 4 of the same distribution hole group are arranged along the axial direction of the wax dripping tube sleeve 3.

[0053] It also includes a second driving gear 21 and a second driven gear 22. The second driven gear 22 is arranged at one end of the cooling drum 15 and is coaxially arranged therewith. The second driving gear 21 is arranged on the output shaft of the motor and meshes with the second driven gear 22. The motor drives the cooling drum 15 to rotate through the cooperation of the second driving gear 21 and the second driven gear 22. A water inlet 23 and a water outlet 24 are arranged on the end surface of one end of the cooling drum 15. The cooling medium enters the interior of the cooling drum 15 through the water inlet 23, and the heated cooling medium is discharged through the water outlet 24. This cycle is repeated to cool the wax liquid dripping onto the cooling drum 15.

[0054] When in use, the wax liquid in the wax inlet pipe 8 drips into the wax melting tank 1 through the wax outlet hole 20, and the heating component 7 heats the wax liquid in the wax melting tank 1. During the rotation of the wax dripping pipe sleeve 3, when the distribution hole 4 on the wax dripping pipe sleeve 3 passes through the wax liquid through hole 2 at the bottom of the wax melting tank 1, the wax liquid flowing out through the wax liquid through hole 2 of the wax melting tank 1 drips out from the distribution hole 4 on the wax dripping pipe sleeve 3 and falls on the rotating cooling drum 15. As the cooling drum 15 rotates, the wax liquid cools and turns into wax particles during the rotation. When the wax particles contact the scraping plate 16, the wax particles are blocked by the scraping plate 16 and fall into the particle collecting box 17. In this way, only one group of distribution holes 4 arranged along the axial direction of the wax dripping pipe sleeve 3 drips wax each time, and there is no situation where multiple distribution hole groups drip wax at the same time, which can effectively prevent the wax liquid from adhering to the rotating cooling drum 15 after dripping. The granulation effect can be improved.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Double-action wax pellet forming machine, characterized by: include, A wax melting tank (1), wherein a group of wax liquid through holes (2) are provided at the bottom of the wax melting tank (1), and all of the wax liquid through holes (2) are arranged along the length direction of the wax melting tank (1); A wax dripping tube sleeve (3), the wax dripping tube sleeve (3) being rotatably arranged on the periphery of the wax melting tank (1), a material distribution hole group being provided on the wax dripping tube sleeve (3), all the material distribution hole groups being arranged along the circumferential direction of the wax dripping tube sleeve (3), and all the material distribution holes (4) of the same material distribution hole group being arranged along the axial direction of the wax dripping tube sleeve (3).

2. The double-action wax pellet forming machine according to claim 1, characterized in that: Also includes, A sealing head (5), wherein both ends of the wax dripping tube sleeve (3) are rotatably arranged on the sealing head (5) at the corresponding ends; A positioning sleeve (6), the positioning sleeve (6) being located inside the wax dripping tube sleeve (3), the positioning sleeve (6) being mounted between the sealing heads (5) at both ends, and the bottom of the wax melting groove (1) passing through the positioning sleeve (6) and extending to between the positioning sleeve (6) and the wax dripping tube sleeve (3); A heating component (7) is arranged inside the positioning sleeve (6) and is used to heat the wax liquid in the wax melting tank (1).

3. The double-action wax pellet forming machine according to claim 2, characterized in that: It also comprises a wax inlet pipe (8), and contact seals are formed between the two ends of the positioning sleeve (6) and the sealing head (5), and between the two ends of the wax dripping pipe sleeve (3) and the sealing head (5). The sealing head (5) is provided with a mounting hole for passing the wax inlet pipe (8) and the heating component (7). The wax inlet pipe (8) is used to feed the wax melting tank (1).

4. The double-action wax pellet forming machine according to claim 3, characterized in that: Also includes, An air outlet pipe (9), wherein the inlet end of the air outlet pipe (9) is in communication with the interior of the positioning sleeve (6), and the outlet end of the air outlet pipe (9) is located outside the sealing head (5); An air outlet valve (10), wherein the air outlet valve (10) is arranged at an outlet end of the air outlet pipe (9).

5. The double-action wax pellet forming machine according to claim 3, characterized in that: The wax inlet pipeline (8) is installed above the wax melting tank (1), and a group of wax outlet holes (20) are opened at the bottom of the wax inlet pipeline (8), and all the wax outlet holes (20) are arranged along the length direction of the wax inlet pipeline (8).

6. The double-action wax pellet forming machine according to claim 3, characterized in that: The heating component (7) comprises: A heating medium inlet pipe (7-1), wherein the heating medium inlet pipe (7-1) is located on one side of the wax melting tank (1); A heating medium discharge pipe (7-2), the heating medium discharge pipe (7-2) being located at the other side of the wax melting tank (1), the outlet end of the heating medium inlet pipe (7-1) and the inlet end of the heating medium discharge pipe (7-2) being located at the same end of the wax melting tank (1) and being in communication with each other, the inlet end of the heating medium inlet pipe (7-1) and the outlet end of the heating medium discharge pipe (7-2) being located at the same end of the wax melting tank (1) and passing through the same mounting hole on the sealing head (5).

7. The double-action wax pellet forming machine according to claim 1, characterized in that: Also includes, A rotary drive mechanism (11), wherein the rotary drive mechanism (11) has an output shaft; a first driving gear (12), the first driving gear (12) being arranged on the output shaft of the rotary drive mechanism (11); A first driven gear (13), the first driven gear (13) being arranged on the periphery of the wax dripping tube sleeve (3), the first driven gear (13) being meshed with the first driving gear (12).

8. The double-action wax pellet forming machine according to claim 2, characterized in that: Also includes, A frame (14), the sealing head (5) being mounted on the frame (14); a cooling roller (15), the cooling roller (15) being rotatably disposed on the frame (14), the cooling roller (15) being located below the wax dripping pipe sleeve (3); a scraper plate (16), the scraper plate (16) being located on a side of the cooling drum (15) that is screwed in at the lowest point; A grain collecting box (17), wherein the grain collecting box (17) is arranged below the grain scraping plate (16).

9. The double-action wax pellet forming machine according to claim 8, characterized in that: It also includes a scraper plate pressure bar (18), the two ends of the scraper plate (16) are rotatably connected to the frame (14), the scraper plate (16) and the scraper plate pressure bar (18) are overlapped, and the scraper plate pressure bar (18) has the freedom of movement to approach or move away from the cooling drum (15).

10. The double-action wax pellet forming machine according to claim 8, characterized in that: It also includes a condensing coil (19), the condensing coil (19) being arranged on the periphery of the cooling drum (15), a wax particle channel being left between the condensing coil (19) and the cooling drum (15), and the wax dripping pipe sleeve (3) being located between two adjacent condensing coils (19).

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