Raw material processing equipment for CPVC large diameter pipe production

Abstract

The present invention belongs to the technical field of CPVC pipes, and discloses a raw material processing device for the production of CPVC large-diameter pipes, including a drying shell, and also including: a hot air device, which is installed on the side of the drying shell. The present invention allows CPVC resin particles to enter the interior of the storage tank, and at the same time, a driving motor drives the transmission rod and the diversion bin, the drying net, and the stabilizing plate to rotate, so that the two parallel drying components maintain a plane, and the hot air device is used to inject air into the drying shell, and the hot air hits the drying net and passes through the gaps of the CPVC resin particles in the storage tank to penetrate the interior of the drying net. In this process, the moisture of the CPVC resin particles is taken away by the hot air, and at the same time, the hot air synchronously hits the guide plate during the movement in the drying shell, and the hot air contacts the drying nets at both ends under the guidance of the guide plate, thereby improving the drying effect of the CPVC resin particles in the storage tank, and at the same time ensuring the uniformity of the drying of the CPVC resin particles.

Description

Technical Field

[0001] The invention belongs to the technical field of CPVC pipes, in particular to raw material processing equipment for producing CPVC large-diameter pipes. Background Art

[0002] CPVC pipe (chlorinated polyvinyl chloride pipe) is a high-performance pipe material. It is a high-performance material with high softening temperature, corrosion resistance, aging resistance and combustion resistance produced by chlorination modification. It is widely used in construction, chemical industry, electric power and other fields. The existing CPVC is a new type of polymer material obtained by chlorination modification of PVC. Chlorine atoms are introduced into its molecular chain, which destroys the regularity of the molecular chain, resulting in a decrease in the crystallinity of the material and an increase in the amorphous region. This structural change affects the fluidity of CPVC during the injection molding process. Compared with materials such as PVC, its fluidity is poor. In order to improve the thermal flow of CPVC resin material injection molding, it is usually necessary to add an appropriate amount of internal lubricant and external lubricant to the raw material, which can reduce the viscosity of the melt, improve the fluidity, and improve the fluidity of CPVC. At present, CPVC resin is melted and added with additives, and then mixed, granulated and dried. However, the existing CPVC resin particles are prone to particle accumulation during the drying process, resulting in uneven drying of CPVC resin particles, which in turn affects the subsequent processing steps. Therefore, a raw material processing equipment for the production of CPVC large-diameter pipes is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a raw material processing device for CPVC large-diameter pipe production, which solves the problem of uneven drying caused by particle accumulation during the existing CPVC resin particle drying process.

[0004] To achieve the above object, the present invention provides the following technical solution: a raw material processing device for producing CPVC large-diameter pipes, comprising a drying shell, and further comprising:

[0005] A hot air device, the hot air device is installed on the side of the drying shell;

[0006] An injection assembly, the injection assembly is installed inside the drying shell;

[0007] A drying component, wherein the drying component is arranged inside the drying housing;

[0008] A transmission assembly, the transmission assembly is installed on the top of the drying assembly;

[0009] A discharge assembly, the discharge assembly being arranged on the drying shell;

[0010] The drying assembly comprises a stabilizing plate movably mounted inside the drying housing, two drying nets are fixedly mounted on the top of the stabilizing plate, a guide plate is fixedly mounted between the two drying nets, storage slots are provided in the two drying nets, the drying nets and the storage slots are in a sawtooth shape, and a diversion bin is fixedly mounted on the top of the drying nets;

[0011] The top of the storage tank is in communication with the diversion chamber;

[0012] The injection assembly comprises a material storage box fixedly mounted on the top of the drying shell, a guide box is fixedly mounted on the bottom of the material storage box, the bottom of the guide box is connected to the diversion bin through a connecting cover, and the connecting cover is made of elastic material;

[0013] A fixing frame is fixedly mounted on the top of the material storage box, a transmission rod is movably mounted on the fixing frame, and the bottom of the transmission rod is connected to the top of the diversion bin;

[0014] A transmission wheel is installed at the upper end of the transmission rod, and a motor is installed at the top of the fixed frame, and the transmission wheel, the transmission rod and the diversion bin are driven to rotate through a belt;

[0015] There are two drying components, and in an initial state, the two diversion chambers are in parallel.

[0016] Preferably, the injection assembly further comprises a transmission frame threadedly sleeved on the outside of the transmission rod, and both ends of the transmission frame are in contact with the inner wall of the material storage box;

[0017] The transmission rod rotates through the external thread to drive the transmission frame to move up and down along the inner wall of the material storage box.

[0018] Preferably, connecting rods are fixedly mounted at both ends of the transmission frame, a protective sleeve is fixedly mounted on the outside of the connecting rod, a connecting sleeve is movably sleeved at the lower end of the protective sleeve, a return spring for supporting the connecting sleeve downward is sleeved inside the protective sleeve, and a blocking block is fixedly mounted at the bottom of the connecting sleeve;

[0019] The connecting sleeve and the blocking block are movably sleeved on the outside of the connecting rod.

[0020] Preferably, a limiting ring is fixedly mounted on the bottom of the connecting rod, and the limiting ring is used to limit the blocking block.

[0021] Preferably, the transmission assembly comprises a sleeve fixedly connected to the bottom of the guide box, a docking ring is fixedly mounted on the outside of the sleeve, an arc-shaped rod is hingedly connected to the outside of the docking ring, one end of the arc-shaped rod is hingedly connected to the docking ring, and the other end is hingedly connected to a blocking plate;

[0022] The blocking plate is attached to the top of the diversion bin and is limited by a limiting block.

[0023] Preferably, one end of the blocking plate is in an arc shape, the sleeve is movably sleeved on the outside of the transmission rod, and the bottom of the sleeve is movably connected to the diversion chamber;

[0024] The diversion bin rotates, and the arc rod rotates with the hinged part with the docking ring as the central axis, pushing the blocking plate to block the connection between the connecting cover and the diversion bin.

[0025] Preferably, the discharge assembly comprises a guide plate fixedly mounted on the bottom of the drying shell, and the bottom of the drying shell is provided with discharge holes located on both sides of two drying nets, wherein every two holes form a group.

[0026] Preferably, the bottom of the stabilizing plate is in contact with the bottom of the inner wall of the drying shell, and a through groove communicating with the storage groove is provided on the stabilizing plate;

[0027] Each group of the discharge holes is aligned in a non-linear manner, and the drying net is rotated 90 degrees to dry the CPVC resin through the hot air device. At this time, the through grooves are in a non-connected state with the discharge holes.

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

[0029] The present invention allows CPVC resin particles to enter the interior of the storage tank. Since the storage tank is formed into multiple corners, the area of ​​the CPVC resin particles in contact with the outside world can be increased. At the same time, the driving motor drives the transmission rod and the diversion bin, the drying net, and the stabilizing plate to rotate, so that the two parallel drying components maintain a plane, and the hot air device injects air into the drying shell. The hot air hits the drying net and passes through the gaps of the CPVC resin particles in the storage tank to penetrate the interior of the drying net. In this process, the moisture of the CPVC resin particles is taken away by the hot air. At the same time, the hot air synchronously hits the guide plate during the movement in the drying shell. The hot air contacts the drying nets at both ends under the guidance of the guide plate, thereby improving the drying effect of the CPVC resin particles in the storage tank and ensuring the uniformity of the drying of the CPVC resin particles.

[0030] The present invention drives two drying components into a plane through a motor, and dries the CPVC resin in the storage tank through the hot air generated by the hot air device. After the CPVC resin is dried, the motor drives the drying net to rotate continuously. At this time, the through groove is connected with the discharge hole, and the CPVC resin in the storage tank is discharged through the discharge hole under the action of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the coordination structure of the injection assembly and the drying assembly of the present invention;

[0034] Figure 4 This is a schematic diagram of the movement plane structure of the drying network of the present invention;

[0035] Figure 5 This is a schematic diagram of the initial state structure of the drying component of the present invention;

[0036] Figure 6 This is a schematic diagram of the coordination structure of the drying component and the discharge component of the present invention;

[0037] Figure 7 This is a schematic diagram of the appearance structure of the injection assembly, the drying assembly and the transmission assembly of the present invention;

[0038] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0039] Fig. 9 It is a schematic diagram of the cross-sectional structure of the injection component and the drying component of the present invention;

[0040] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at B in the middle;

[0041] Fig.11 For the present invention Fig.10 Enlarged structural diagram at point C in the middle.

[0042] In the figure: 1. Drying shell; 2. Hot air equipment; 3. Discharge assembly; 31. Guide plate; 32. Discharge hole; 4. Injection assembly; 41. Storage box; 411. Return spring; 412. Protective sleeve; 413. Connecting sleeve; 42. Fixed frame; 43. Guide box; 44. Transmission rod; 45. Transmission frame; 46. Connecting cover; 47. Connecting rod; 48. Block; 49. Limiting ring; 5. Drying assembly; 51. Diversion bin; 52. Drying net; 53. Guide plate; 54. Storage tank; 55. Stabilizing plate; 6. Transmission assembly; 61. Sleeve; 62. Docking ring; 63. Arc rod; 64. Limiting block; 65. Blocking plate. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0044] like Figures 1 to 11As shown, the present invention provides a raw material processing device for producing CPVC large-diameter pipes, comprising a drying shell 1, and also comprising:

[0045] A hot air device 2, which is installed on the side of the drying shell 1;

[0046] An injection assembly 4, the injection assembly 4 is installed inside the drying shell 1;

[0047] A drying component 5, the drying component 5 is arranged inside the drying housing 1;

[0048] A transmission assembly 6, which is installed on the top of the drying assembly 5;

[0049] A discharge assembly 3, which is arranged on the drying shell 1;

[0050] The drying assembly 5 includes a stabilizing plate 55 movably mounted inside the drying housing 1. Two drying nets 52 are fixedly mounted on the top of the stabilizing plate 55. A guide plate 53 is fixedly mounted between the two drying nets 52. Storage slots 54 are provided in the two drying nets 52. The drying nets 52 and the storage slots 54 are in a sawtooth shape. A diversion bin 51 is fixedly mounted on the top of the drying nets 52.

[0051] The top of the storage tank 54 is connected to the diversion chamber 51;

[0052] The material injection assembly 4 includes a material storage box 41 fixedly mounted on the top of the drying shell 1, a guide box 43 is fixedly mounted on the bottom of the material storage box 41, and the bottom of the guide box 43 is connected to the diversion bin 51 through a connecting cover 46, and the connecting cover 46 is made of elastic material;

[0053] A fixing frame 42 is fixedly mounted on the top of the material storage box 41, and a transmission rod 44 is movably mounted on the fixing frame 42, and the bottom of the transmission rod 44 is connected to the top of the diversion bin 51;

[0054] A transmission wheel is installed at the upper end of the transmission rod 44, and a motor is installed at the top of the fixed frame 42, and the transmission wheel, the transmission rod 44 and the diversion chamber 51 are driven to rotate by a belt;

[0055] There are two drying components 5, and in an initial state, the two diversion chambers 51 are in parallel.

[0056] By placing the CPVC resin particles in the storage box 41 and respectively entering the storage slots 54, the storage slots 54 have multiple corners, so that the contact area of ​​the CPVC resin particles with the outside world can be increased. At the same time, the driving motor drives the transmission rod 44 and the diversion bin 51, the drying net 52, and the stabilizing plate 55 to rotate, so that the two parallel drying components 5 maintain a plane. During the rotation of the drying net 52, the guide box 43 and the diversion bin 51 are always connected through the connecting cover 46. The hot air device 2 is used to inject air into the drying shell 1, and the hot air hits the drying net 52 and passes through the gaps of the CPVC resin particles in the storage slots 54. In this process, the moisture of the CPVC resin particles is taken away by the hot air. At the same time, the hot air synchronously hits the guide plate 53 during the movement in the drying shell 1. The hot air contacts the drying nets 52 at both ends under the guidance of the guide plate 53, thereby improving the drying effect of the CPVC resin particles in the storage slot 54, and ensuring the uniformity of the drying of the CPVC resin particles, thereby avoiding the phenomenon of uneven humidity caused by accumulation during the drying process.

[0057] like Figure 7-Figure 11 As shown, the injection assembly 4 further includes a transmission frame 45 threadedly sleeved on the outside of the transmission rod 44, and both ends of the transmission frame 45 are in contact with the inner wall of the material storage box 41;

[0058] The transmission rod 44 rotates through the external thread to drive the transmission frame 45 to move up and down along the inner wall of the storage box 41;

[0059] Connecting rods 47 are fixedly mounted at both ends of the transmission frame 45, and a protective sleeve 412 is fixedly mounted on the outside of the connecting rod 47. A connecting sleeve 413 is movably sleeved at the lower end of the protective sleeve 412. A return spring 411 is sleeved inside the protective sleeve 412 to support the connecting sleeve 413 downward. A blocking block 48 is fixedly mounted at the bottom of the connecting sleeve 413.

[0060] The connecting sleeve 413 and the blocking block 48 are movably sleeved on the outside of the connecting rod 47;

[0061] A limit ring 49 is fixedly mounted at the bottom of the connecting rod 47, and the limit ring 49 is used to limit the blocking block 48;

[0062] The transmission assembly 6 includes a sleeve 61 fixedly connected to the bottom of the guide box 43, a docking ring 62 is fixedly mounted on the outside of the sleeve 61, an arc rod 63 is hingedly connected to the outside of the docking ring 62, one end of the arc rod 63 is hingedly connected to the docking ring 62, and the other end is hingedly connected to a blocking plate 65;

[0063] The blocking plate 65 is attached to the top of the diversion chamber 51 and is limited by the limiting block 64;

[0064] One end of the blocking plate 65 is in an arc shape, the sleeve 61 is movably sleeved on the outside of the transmission rod 44, and the bottom of the sleeve 61 is movably connected to the diversion chamber 51;

[0065] The diversion chamber 51 rotates the arc rod 63 with the hinged portion with the docking ring 62 as the central axis, pushing the blocking plate 65 to block the connection between the connecting cover 46 and the diversion chamber 51 .

[0066] In the initial state, the two drying components 5 are in parallel, the blocking block 48 blocks the connection between the guide box 43 and the connecting cover 46, and the connecting cover 46 and the diversion bin 51 are in a connected state, and the CPVC resin particles inside the connecting cover 46 enter the diversion bin 51 and the storage tank 54. During this process, the hot air device 2 continuously blows hot air into the drying shell 1, and the transmission rod 44 and the diversion bin 51 are driven by the motor to rotate. During the rotation, the diversion bin 51 drives the blocking plate 65 to rotate synchronously, so that the arc rod 63 rotates with the hinged part with the docking ring 62 as the central axis, thereby pushing the blocking plate 65 to block the connection between the connecting cover 46 and the diversion bin 51, and the CPVC resin particles in the storage tank 54 are dried by the rotation of the drying net 52;

[0067] At the same time, during the rotation of the transmission rod 44, the transmission frame 45 moves up along the inner wall of the storage box 41 under the action of the external thread of the transmission rod 44, and synchronously drives the connecting rod 47 and the blocking block 48 to disengage the blockage of the connection between the guide box 43 and the connecting cover 46. During the process of the connecting rod 47 driving the blocking block 48 to move up, the blocking block 48 moves down along the connecting rod 47 under the action of the return spring 411 to always block the connection between the guide box 43 and the connecting cover 46 until the return spring 411 is completely reset and the bottom of the blocking block 48 contacts the limit ring 49. At this time, the connecting rod 47 can drive the blocking block 48 to move up to achieve the connection between the guide box 43 and the connecting cover 46. In this process, the blocking block 48 can be delayed to disengage from the blockage of the guide box 43 and the connecting cover 46 under the action of the return spring 411, and the CPVC resin particles inside the guide box 43 can enter the connecting cover 46 for storage.

[0068] like Figure 2 , Figure 5 and Figure 6 As shown, the discharge assembly 3 includes a guide plate 31 fixed to the bottom of the drying shell 1, and the bottom of the drying shell 1 is provided with discharge holes 32 located on both sides of two drying nets 52, wherein each two form a group;

[0069] The bottom of the stabilizing plate 55 is in contact with the bottom of the inner wall of the drying shell 1, and a through groove communicating with the storage groove 54 is formed on the stabilizing plate 55;

[0070] Each group of the discharge holes 32 is aligned in a non-linear manner, and the drying net 52 rotates 90 degrees to dry the CPVC resin through the hot air device 2. At this time, the through grooves and the discharge holes 32 are in a non-connected state.

[0071] The motor drives the two drying components 5 to form a plane, and the hot air generated by the hot air device 2 dries the CPVC resin in the storage tank 54. After the CPVC resin is dried, the motor drives the drying net 52 to rotate continuously. At this time, the through groove is connected with the discharge hole 32, and the CPVC resin in the storage tank 54 is discharged through the discharge hole 32 under the action of gravity.

[0072] After discharge, the drying net 52 rotates in the opposite direction to make the two drying components 5 parallel. At this time, the blocking block 48 blocks the guide box 43, and the connecting cover 46 is connected with the diversion bin 51. The CPVC resin can enter the storage tank 54 for drying. This reciprocating process avoids the accumulation of the CPVC resin during the drying process, thereby improving the uniformity of the resin drying.

[0073] The working principle and use process of the present invention:

[0074] In the initial state, the two drying components 5 are in parallel, and the blocking block 48 blocks the connection between the guide box 43 and the connecting cover 46, while the connecting cover 46 and the diversion bin 51 are in a connected state. The CPVC resin particles inside the connecting cover 46 enter the diversion bin 51 and the storage tank 54. During this process, the hot air device 2 continuously blows hot air into the drying shell 1, and the transmission rod 44 is driven by the motor to rotate and the diversion bin 51 is driven to rotate. During the rotation process, the diversion bin 51 drives the blocking plate 65 to rotate synchronously, so that the arc rod 63 rotates with the hinged part with the docking ring 62 as the central axis, thereby pushing the blocking plate 65 to seal the connection between the connecting cover 46 and the diversion bin 51. The two drying components 5 form a plane, and the hot air device 2 is used to inject air into the drying shell 1. The hot air hits the drying net 52 and passes through the gaps of the CPVC resin particles in the storage tank 54 to penetrate the interior of the drying net 52. In this process, the moisture of the CPVC resin particles is taken away by the hot air. At the same time, the hot air hits the guide plate 53 synchronously during the movement in the drying shell 1. The hot air contacts the drying nets 52 at both ends under the guidance of the guide plate 53, thereby improving the drying effect of the CPVC resin particles in the storage tank 54, and ensuring the uniformity of the drying of the CPVC resin particles, thereby avoiding the phenomenon of uneven humidity caused by accumulation during the drying process.

[0075] At the same time, during the rotation of the transmission rod 44, the transmission frame 45 moves up along the inner wall of the storage box 41 under the action of the external thread of the transmission rod 44, and synchronously drives the connecting rod 47 and the blocking block 48 to disengage the blocking of the connection between the guide box 43 and the connecting cover 46. During the upward movement of the blocking block 48 driven by the connecting rod 47, the blocking block 48 moves down along the connecting rod 47 under the action of the return spring 411 to always block the connection between the guide box 43 and the connecting cover 46 until the return spring 411 is completely reset and the bottom of the blocking block 48 contacts the limit ring 49. At this time, the connecting rod 47 can drive the blocking block 48 to move up to achieve the connection between the guide box 43 and the connecting cover 46. In this process, the blocking block 48 can achieve delayed disengagement from the blocking of the guide box 43 and the connecting cover 46 under the action of the return spring 411, and the CPVC resin particles inside the guide box 43 can enter the connecting cover 46 for storage;

[0076] The motor drives the two drying components 5 to form a plane, and the hot air generated by the hot air device 2 dries the CPVC resin in the storage tank 54. After the CPVC resin is dried, the motor drives the drying net 52 to rotate continuously. At this time, the through groove is connected with the discharge hole 32, and the CPVC resin in the storage tank 54 is discharged through the discharge hole 32 under the action of gravity.

[0077] After discharge, the drying net 52 rotates in the opposite direction to make the two drying components 5 parallel. At this time, the blocking block 48 blocks the guide box 43, and the connecting cover 46 is connected with the diversion bin 51. The CPVC resin can enter the storage tank 54 for drying. This reciprocating process avoids the accumulation of the CPVC resin during the drying process, thereby improving the uniformity of the resin drying.

[0078] 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.

[0079] 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. Raw material processing equipment for the production of CPVC large-diameter pipes, comprising a drying shell (1), characterized in that: Also includes: A hot air device (2), the hot air device (2) being installed on a side of the drying shell (1); An injection assembly (4), the injection assembly (4) being installed inside the drying shell (1); A drying component (5), the drying component (5) being arranged inside the drying housing (1); A transmission assembly (6), the transmission assembly (6) being mounted on the top of the drying assembly (5); A discharge assembly (3), the discharge assembly (3) being arranged on the drying shell (1); The drying assembly (5) comprises a stabilizing plate (55) movably mounted inside the drying housing (1); two drying nets (52) are fixedly mounted on the top of the stabilizing plate (55); a guide plate (53) is fixedly mounted between the two drying nets (52); storage slots (54) are provided inside the two drying nets (52); the drying nets (52) and the storage slots (54) are in a sawtooth shape; and a diversion bin (51) is fixedly mounted on the top of the drying nets (52); The top of the storage tank (54) is in communication with the diversion chamber (51); The injection assembly (4) comprises a material storage box (41) fixedly mounted on the top of the drying shell (1); a guide box (43) is fixedly mounted on the bottom of the material storage box (41); the bottom of the guide box (43) is connected to the diversion bin (51) via a connecting cover (46); the connecting cover (46) is made of elastic material; A fixing frame (42) is fixedly mounted on the top of the material storage box (41), a transmission rod (44) is movably mounted on the fixing frame (42), and the bottom of the transmission rod (44) is connected to the top of the diversion bin (51); A transmission wheel is installed at the upper end of the transmission rod (44), and a motor is installed at the top of the fixing frame (42), and the transmission wheel, the transmission rod (44) and the diversion bin (51) are driven to rotate by a belt; There are two drying components (5), and in an initial state, the two diversion chambers (51) are in a parallel state; The transmission assembly (6) comprises a sleeve (61) fixedly connected to the bottom of the guide box (43); a docking ring (62) is fixedly mounted on the outside of the sleeve (61); an arc-shaped rod (63) is hingedly connected to the outside of the docking ring (62); one end of the arc-shaped rod (63) is hingedly connected to the docking ring (62); and the other end is hingedly connected to a blocking plate (65); The blocking plate (65) is attached to the top of the diversion chamber (51) and is limited by a limit block (64); One end of the blocking plate (65) is in an arc shape, the sleeve (61) is movably sleeved on the outside of the transmission rod (44), and the bottom of the sleeve (61) is movably connected to the diversion chamber (51); The diversion chamber (51) rotates, and the arc-shaped rod (63) rotates with the hinged portion with the docking ring (62) as the central axis, pushing the blocking plate (65) to block the connection between the connection cover (46) and the diversion chamber (51). When the motor drives the transmission rod (44) and the diversion chamber (51) to rotate in the opposite direction, the connection cover (46) and the diversion chamber (51) can be connected.

2. The raw material processing equipment for producing CPVC large-diameter pipes according to claim 1, characterized in that: The injection assembly (4) further comprises a transmission frame (45) threadedly sleeved on the outside of the transmission rod (44), and two ends of the transmission frame (45) are in contact with the inner wall of the material storage box (41); The transmission rod (44) rotates through the external thread to drive the transmission frame (45) to move up and down along the inner wall of the material storage box (41).

3. The raw material processing equipment for producing CPVC large-diameter pipes according to claim 2, characterized in that: The transmission frame (45) has connecting rods (47) fixedly mounted on both ends thereof, a protective sleeve (412) fixedly mounted on the outside of the connecting rod (47), a connecting sleeve (413) movably sleeved on the lower end of the protective sleeve (412), a return spring (411) for supporting the connecting sleeve (413) downwards sleeved on the inside of the protective sleeve (412), and a blocking block (48) fixedly mounted on the bottom of the connecting sleeve (413); The connecting sleeve (413) and the blocking block (48) are movably sleeved on the outside of the connecting rod (47).

4. The raw material processing equipment for producing CPVC large-diameter pipes according to claim 3 is characterized by: A limiting ring (49) is fixedly mounted on the bottom of the connecting rod (47), and the limiting ring (49) is used to limit the position of the blocking block (48).

5. The raw material processing equipment for producing CPVC large-diameter pipes according to claim 4, characterized in that: The discharge assembly (3) comprises a guide plate (31) fixed to the bottom of the drying shell (1), and the bottom of the drying shell (1) is provided with discharge holes (32) located on both sides of two drying nets (52), wherein every two holes form a group.

6. The raw material processing equipment for producing CPVC large-diameter pipes according to claim 5, characterized in that: The bottom of the stabilizing plate (55) is in contact with the bottom of the inner wall of the drying shell (1), and a through groove communicating with the storage groove (54) is formed on the stabilizing plate (55); Each group of the discharge holes (32) is aligned in a non-linear manner, and the drying net (52) is rotated 90 degrees to dry the CPVC resin through the hot air device (2), at which time the through grooves and the discharge holes (32) are in a non-connected state.

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