Raw material screening equipment for PVC pipe processing

Abstract

The utility model provides a raw material screening equipment for PVC pipeline processing belongs to PVC pipeline processing technical field, this raw material screening equipment for PVC pipeline processing, including the pulverization box, the bottom fixed connection of pulverization box has the pulverization cover, the circumferential surface of pulverization cover is equipped with two discharge grooves and two positioning hole, the one side end of pulverization box all is equipped with the pulverization hole, two pulverization holes all are rotatably connected with the pulverization wheel, the mesh size of V type screen is set according to the requirement of PVC pipeline raw material, the raw material particle after crushing is more uniform, is convenient for V type screen to screen, can effectively separate out the impurity and the agglomerate raw material of similar particle size, has improved the purity of raw material after screening, has guaranteed the quality stability of subsequent PVC pipeline production, has reduced the probability that pipeline appears bubble, cracking, insufficient strength etc. problem, has improved the qualified rate of product.

Description

Technical Field

[0001] This utility model belongs to the field of PVC pipe processing technology, specifically relating to a raw material screening device for PVC pipe processing. Background Technology

[0002] In the production and processing of PVC pipes, the screening of raw materials is a crucial step. The raw materials for PVC pipes are usually PVC resin powder and various additives. During storage and transportation, these raw materials may be mixed with impurities and may also clump. If these unqualified raw materials directly enter the subsequent processing steps, it will seriously affect the quality of PVC pipes, leading to problems such as bubbles, cracks, and insufficient strength, reducing the product qualification rate and increasing production costs.

[0003] Currently, most existing PVC raw material screening equipment on the market has a simple structure and mainly relies on a single screen for screening. This screening method has many problems: on the one hand, the screening efficiency is low, the raw material is easy to accumulate on the screen and cannot pass through the screen quickly, resulting in slow screening speed and failing to meet the needs of large-scale production; on the other hand, the screening effect is poor, and it is difficult to effectively separate some impurities and agglomerated raw materials with similar particle sizes, resulting in low purity of the screened raw material.

[0004] In addition, existing screening equipment is prone to screen clogging during use, requiring frequent shutdowns for cleaning. This not only affects the continuity of production but also increases the intensity of manual labor. Furthermore, traditional screening equipment usually lacks the function of pre-processing raw materials, and cannot crush some larger agglomerated raw materials, which directly affects the screening effect and efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a raw material screening device for PVC pipe processing, aiming to solve the problems of low screening efficiency, easy accumulation of raw materials on the screen, resulting in slow screening speed and inability to meet the needs of large-scale production; poor screening effect, difficulty in effectively separating some impurities and agglomerated raw materials with similar particle sizes, resulting in low purity of the screened raw materials; easy clogging of the screen, requiring frequent shutdowns for cleaning, which not only affects the continuity of production, but also increases the intensity of manual labor.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A raw material screening device for PVC pipe processing includes:

[0008] The crushing chamber has a crushing sleeve fixedly connected to its bottom end. The crushing sleeve has two discharge grooves and two positioning holes on its circumferential surface. A crushing hole is provided on one side of the crushing chamber. A crushing wheel is rotatably connected in each of the two crushing holes. A motor is fixedly connected to one side of the crushing chamber. The output end of the motor is fixedly connected to one end of one of the crushing wheels.

[0009] V-shaped screen, the V-shaped screen being slidably connected to the inner circumference of the crushing sleeve;

[0010] It also includes a screening mechanism, which is located inside the crushing sleeve and is used to screen PVC pipe raw materials.

[0011] As a preferred embodiment of this utility model, the screening mechanism includes:

[0012] A fixing ring is fixedly connected to the inner circumference of the crushing sleeve. The fixing ring is located on the lower side of the V-shaped screen, and multiple limiting rods are slidably connected inside the fixing ring.

[0013] Multiple springs are fixedly connected to the adjacent ends of the V-shaped screen and the fixing ring, and the multiple springs are respectively sleeved on the circumferential surface of multiple limiting rods;

[0014] Two positioning holes, both of which are formed on the circumferential surface of the crushing sleeve;

[0015] Two first transmission rods are rotatably connected to two positioning holes respectively;

[0016] Two cams are fixedly connected to the circumferential surface of the first transmission rod, and both cams are used to lift the bottom of the V-shaped screen.

[0017] Two support plates, both of which are fixedly connected to the circumferential surface of the crushing sleeve;

[0018] A spiral conveyor blade, which is rotatably connected to the inner circumferential wall of two support plates;

[0019] A protective cover is fixedly connected to the bottom end of one of the support plates. A second transmission rod is rotatably connected inside the protective cover. The V-shaped screen is slidably connected to the circumferential surface of the second transmission rod. The first transmission rod is rotatably connected inside the protective cover. A bevel gear is fixedly connected to the circumferential surface of the spiral transmission blade and one of the first transmission rods respectively.

[0020] A cleaning brush, which is fixedly connected to the circumferential surface of the second transmission rod;

[0021] A transmission assembly is located on one side of the crushing chamber and is used to drive two first transmission rods to rotate synchronously.

[0022] As a preferred embodiment of this utility model, the transmission assembly includes:

[0023] Two second pulleys are fixedly connected to the circumferential surfaces of the two first transmission rods, respectively.

[0024] The second belt is meshed with the circumferential surfaces of the two second pulleys;

[0025] Two first pulleys are respectively fixedly connected to the circumferential surface of one of the crushing wheels and one of the first transmission rods;

[0026] A first belt is connected to the circumferential surface of two first pulleys.

[0027] In a preferred embodiment of this utility model, transmission gears are fixedly connected to the circumferential surfaces of both crushing wheels, and the two transmission gears mesh with each other.

[0028] As a preferred embodiment of this utility model, a conical sleeve is fixedly connected to the inner circumference of the crushing sleeve, and three support seats are fixedly connected to the bottom end of the crushing sleeve.

[0029] In a preferred embodiment of this utility model, the two discharge troughs and the two discharge ports of the V-shaped screen are interconnected.

[0030] As a preferred embodiment of this utility model, two plastic sleeves are fixedly connected to the circumferential surface of the crushing box, and a cover plate is movably hinged to the top of the crushing box via a hinge shaft.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] 1. In this solution, the equipment adopts a V-shaped screen. Its V-shaped structure utilizes gravity to automatically concentrate the raw materials towards the center of the screen, increasing the contact area and contact time between the materials and the screen. Simultaneously, the cams and springs in the screening mechanism work together to cause the V-shaped screen to vibrate up and down. This vibration causes the raw materials to move continuously on the screen, accelerating the screening process, preventing material accumulation, and improving screening efficiency to meet the needs of large-scale production. Before screening, the equipment includes a crushing stage. Two meshing crushing wheels break up the raw materials, dissolving any lumps. The crushed material then enters the V-shaped screen for further screening. The screen aperture size is set according to the requirements of the PVC pipe raw materials. The crushed material particles are more uniform, facilitating screening by the V-shaped screen. This effectively separates impurities and lumps of similar particle size, improving the purity of the screened material and ensuring the quality stability of subsequent PVC pipe production. This reduces the probability of problems such as bubbles, cracks, and insufficient strength in the pipes, thus increasing the product qualification rate.

[0033] 2. In this solution, a cleaning brush is installed in the screening mechanism. The cleaning brush is fixedly connected to the circumferential surface of the second transmission rod. The second transmission rod is driven to rotate by the first transmission rod, so that the cleaning brush cleans the surface of the V-shaped screen. The cleaning brush can remove particles stuck in the mesh of the V-shaped screen in time, reduce screen blockage, avoid frequent shutdowns for cleaning, ensure the continuity of production, and reduce the intensity of manual labor.

[0034] 3. In this solution, the equipment integrates a crushing device consisting of a crushing box, crushing wheel, and motor. Before the raw material enters the screening stage, it is crushed. The crushing device can break larger agglomerated raw materials into smaller particles, making the raw materials more suitable for screening. This avoids the impact of larger agglomerated materials on the screening effect and efficiency, optimizes the screening process, and improves the smoothness of the entire production process. Attached Figure Description

[0035] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0036] Figure 1 This is a perspective view of the present utility model;

[0037] Figure 2 This is a first-person exploded perspective view of the present invention;

[0038] Figure 3 This is a first-view sectional perspective view of the present invention;

[0039] Figure 4 In this utility model Figure 3A magnified view of part A.

[0040] In the diagram: 1. Crushing chamber; 101. Plastic sleeve; 102. Cover plate; 103. Crushing hole; 2. Crushing sleeve; 201. Discharge chute; 202. Positioning hole; 3. Transmission assembly; 301. Transmission gear; 302. First belt; 303. First pulley; 304. Second belt; 305. Second pulley; 306. First transmission rod; 307. Support plate; 4. Motor; 5. Crushing wheel; 6. Screening mechanism; 601. V-shaped screen; 602. Spring; 603. Cam; 604. Bevel gear; 605. Protective cover; 606. Spiral conveyor blade; 607. Second transmission rod; 7. Conical sleeve; 8. Support base. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Example 1

[0043] Please see Figures 1-4 The present invention provides the following technical solution:

[0044] A raw material screening device for PVC pipe processing includes:

[0045] The crushing box 1 has a crushing sleeve 2 fixedly connected to its bottom end. The crushing sleeve 2 has two discharge grooves 201 and two positioning holes 202 on its circumferential surface. A crushing hole 103 is provided on one side end of the crushing box 1. A crushing wheel 5 is rotatably connected in each of the two crushing holes 103. A motor 4 is fixedly connected to one side end of the crushing box 1. The output end of the motor 4 is fixedly connected to one end of one of the crushing wheels 5.

[0046] V-shaped screen 601, the V-shaped screen 601 is slidably connected to the inner circumference of the crushing sleeve 2;

[0047] It also includes a screening mechanism 6, which is located inside the crushing sleeve 2 and is used to screen PVC pipe raw materials.

[0048] In a specific embodiment of this utility model, the crushing chamber 1, as one of the main supporting structures of the equipment, provides installation space and a fixed foundation for internal components such as the crushing wheel 5. The enclosed structure of the crushing chamber 1 can play a protective role during the raw material crushing process, preventing raw materials from splashing out of the equipment during crushing, ensuring a clean production environment and the safety of operators.

[0049] The crushing sleeve 2 is fixedly connected to the bottom of the crushing box 1, forming a channel for the raw material to transition from the crushing stage to the screening stage. The inner circumference of the crushing sleeve 2 provides a sliding track for the V-shaped screen 601, ensuring that the V-shaped screen 601 can slide stably inside it, thereby realizing the screening operation.

[0050] Two discharge troughs 201 are formed on the circumferential surface of the crushing sleeve 2. Their main function is to serve as discharge channels for raw materials or impurities of different specifications after screening. During the screening process, after being screened by the V-shaped screen 601, larger particles or impurities that do not meet the requirements will be intercepted above the V-shaped screen 601. When these materials accumulate to a certain amount, they can be discharged from the equipment through the discharge troughs 201, ensuring the continuous operation of the screening process and avoiding material blockage that affects screening efficiency.

[0051] Positioning holes 202 are formed on the circumferential surface of the crushing sleeve 2, mainly used for equipment installation and component positioning.

[0052] The crushing hole 103 is opened on one side of the crushing box 1, providing support and rotation space for the installation of the crushing wheel 5.

[0053] Two crushing wheels 5 are rotatably connected within the crushing hole 103 and are the core components for crushing raw materials. Driven by the motor 4, the two crushing wheels 5 rotate relative to each other. When the PVC pipe raw material enters the crushing chamber 1, the material is drawn between the two crushing wheels 5. Through the toothed structure or squeezing action on the surface of the crushing wheels 5, the clumps in the raw material are broken up, making the raw material particles more uniform. This lays a good foundation for subsequent screening operations and improves the efficiency and effect of screening.

[0054] The motor 4 is fixedly connected to one side of the crushing box 1, and its output end is fixedly connected to one end of one of the crushing wheels 5, which is the power source for the rotation of the crushing wheel 5.

[0055] The V-shaped screen 601, slidably connected to the inner circumference of the crushing sleeve 2, is a key component in the screening operation. The V-shaped structure of the V-shaped screen 601 utilizes gravity to automatically concentrate the raw material towards the center of the screen, increasing the contact area and time between the material and the screen, thus improving screening efficiency. Simultaneously, the screen aperture size of the V-shaped screen 601 is set according to the requirements of the PVC pipe raw materials, enabling the screening of the crushed material. Material meeting the particle size requirements passes through the screen apertures to enter subsequent stages, while material not meeting the requirements is intercepted on the screen, awaiting discharge through the discharge chute 201. Furthermore, the sliding connection of the V-shaped screen 601 facilitates its removal for cleaning or replacement when needed, ensuring the screening effect.

[0056] The screening mechanism 6, located within the crushing sleeve 2, is the core mechanism for screening PVC pipe raw materials. Working in conjunction with components such as the V-shaped screen 601, the screening mechanism 6 uses specific operating methods, such as vibrating and moving the V-shaped screen 601, to continuously move the raw materials on the screen, accelerating the screening process. The screening mechanism 6 can adjust parameters such as screening intensity and frequency according to the characteristics of the raw materials and screening requirements, ensuring precise screening of the raw materials, improving the purity of the screened materials, meeting the quality requirements of PVC pipe processing, and guaranteeing the quality stability of subsequent PVC pipe production.

[0057] Please refer to the details. Figures 1-4 The screening mechanism 6 includes:

[0058] The fixing ring is fixedly connected to the inner circumference of the crushing sleeve 2. The fixing ring is located on the lower side of the V-shaped screen 601. Multiple limiting rods are slidably connected inside the fixing ring.

[0059] Multiple springs 602 are fixedly connected to the adjacent ends of the V-shaped screen 601 and the fixing ring, and multiple springs 602 are respectively sleeved on the circumferential surface of multiple limiting rods;

[0060] Two positioning holes 202 are provided on the circumferential surface of the crushing sleeve 2;

[0061] Two first transmission rods 306 are rotatably connected to two positioning holes 202 respectively;

[0062] Two cams 603 are fixedly connected to the circumferential surface of the first transmission rod 306, and both cams 603 are used to lift the bottom of the V-shaped screen 601;

[0063] Two support plates 307 are fixedly connected to the circumferential surface of the crushing sleeve 2;

[0064] The spiral conveyor blade 606 is rotatably connected to the inner circumferential wall of the two support plates 307.

[0065] A protective cover 605 is fixedly connected to the bottom end of one of the support plates 307. A second transmission rod 607 is rotatably connected inside the protective cover 605. A V-shaped screen 601 is slidably connected to the circumferential surface of the second transmission rod 607. A first transmission rod 306 is rotatably connected inside the protective cover 605. A spiral transmission blade 606 and a bevel gear 604 are fixedly connected to the circumferential surface of one of the first transmission rods 306 respectively.

[0066] A cleaning brush is fixedly connected to the circumferential surface of the second transmission rod 607;

[0067] The transmission assembly 3 is located on one side of the crushing chamber 1 and is used to drive the two first transmission rods 306 to rotate synchronously.

[0068] In this embodiment: When the transmission component 3 is working, it drives the two first transmission rods 306 to rotate synchronously within the positioning hole 202. The first transmission rods 306 drive the cam 603 to rotate. When the protruding part of the cam 603 rotates to contact the bottom of the V-shaped screen 601, it lifts the V-shaped screen 601 upward. At this time, the V-shaped screen 601 compresses the spring 602, and the spring 602 contracts under the guidance of the limiting rod. When the protruding part of the cam 603 rotates away from the bottom of the V-shaped screen 601, the spring 602 releases its elastic potential energy, pushing the V-shaped screen 601 to return to its original position downward. This process is repeated, and the V-shaped screen 601 vibrates up and down under the combined action of the cam 603 and the spring 602, efficiently screening the raw materials falling on it.

[0069] Simultaneously, one of the first drive rods 306 drives the spiral conveyor blade 606 to rotate through the meshing of the bevel gear 604, transporting the unqualified raw materials discharged from the discharge chute 201 to the designated position. Additionally, the rotation of the first drive rod 306 also drives the second drive rod 607 to rotate, which in turn drives the cleaning brush to rotate, cleaning the surface of the V-shaped screen 601 and preventing screen clogging. The protective cover 605 protects the internal transmission components, ensuring the stable and reliable operation of the entire screening mechanism 6.

[0070] Please refer to the details. Figures 1-3 The transmission assembly 3 includes:

[0071] Two second pulleys 305 are fixedly connected to the circumferential surfaces of two first transmission rods 306 respectively;

[0072] The second belt 304 is driven to mesh with the circumferential surfaces of the two second pulleys 305;

[0073] Two first pulleys 303 are fixedly connected to the circumferential surfaces of one of the crushing wheels 5 and one of the first transmission rods 306, respectively.

[0074] The first belt 302 is connected to the circumferential surface of the two first pulleys 303.

[0075] In this embodiment: when the motor 4 drives the crushing wheel 5 to rotate, the first pulley 303 fixedly connected to the crushing wheel 5 rotates accordingly. Through the transmission action of the first belt 302, it drives another first pulley 303 fixed on the first transmission rod 306 to rotate, thereby causing the first transmission rod 306 to start rotating.

[0076] The second pulley 305 on the first transmission rod 306 rotates synchronously, and through the transmission of the second belt 304, it drives another second pulley 305 and the first transmission rod 306 connected to it to rotate, thereby realizing the synchronous rotation of the two first transmission rods 306.

[0077] In this way, the transmission assembly 3 transmits the power of the crushing wheel 5 to the two first transmission rods 306 of the screening mechanism 6, ensuring that the screening mechanism 6 can coordinate with the crushing link to realize the continuous crushing and screening of raw materials.

[0078] Please refer to the details. Figure 2 Both crushing wheels 5 have transmission gears 301 fixedly connected to their circumferential surfaces, and the two transmission gears 301 mesh with each other.

[0079] In this embodiment: when the motor 4 drives one of the crushing wheels 5 to rotate, it drives the other crushing wheel 5 to rotate synchronously in the opposite direction through two meshing transmission gears 301, so that the two crushing wheels 5 form opposing squeezing and shearing actions, thereby improving the crushing effect of the raw materials.

[0080] Please refer to the details. Figures 1-4 A conical sleeve 7 is fixedly connected to the inner circumference of the crushing sleeve 2, and three support seats 8 are fixedly connected to the bottom end of the crushing sleeve 2.

[0081] In this embodiment: the conical sleeve 7 guides the crushed raw material to converge towards the center of the V-shaped screen 601, avoiding the raw material remaining on the inner wall of the crushing sleeve 2; the three support seats 8 are used to support the bottom of the crushing sleeve 2.

[0082] Please refer to the details. Figures 1-3 The two discharge troughs 201 and the two discharge ports of the V-shaped screen 601 are interconnected.

[0083] In this embodiment: the unqualified raw materials after being screened by the V-shaped screen 601 enter the discharge trough 201 connected to it through its own discharge port, and are then conveyed out by the spiral conveyor blade 606 through the discharge trough 201, so as to realize the orderly discharge of unqualified raw materials.

[0084] Please refer to the details. Figures 1-4 Two plastic sleeves 101 are fixedly connected to the circumferential surface of the crushing box 1, and a cover plate 102 is movably hinged to the top of the crushing box 1 via a hinge shaft.

[0085] In this embodiment: the two plastic sleeves 101 provide convenient gripping points for operators to move or fix the equipment, and also have an anti-slip function; the cover plate 102 can be opened and closed by a hinge, which makes it easy to add raw materials into the crushing chamber 1 when it is open, and prevents dust from overflowing during the crushing process when it is closed, thus keeping the working environment clean.

[0086] The working principle and usage process of this utility model are as follows: Open the cover plate 102 at the top of the crushing chamber 1, put the PVC raw material into the crushing chamber 1, close the cover plate 102, start the motor 4, the motor 4 drives one of the crushing wheels 5 to rotate, and through two meshing transmission gears 301, the other crushing wheel 5 rotates synchronously in the opposite direction to crush the lumps in the raw material; the crushed raw material is guided by the conical sleeve 7 in the crushing sleeve 2 and converges towards the center of the V-shaped screen 601. At the same time, when the motor 4 drives the crushing wheel 5 to rotate, through the transmission component 3—that is, the first pulley 303 on the crushing wheel 5—drives the first pulley 303 on the first transmission rod 306 to rotate via the first belt 302, and the second pulley 303 on the first transmission rod 306... 05 The second belt 304 drives another second belt pulley 305 and the corresponding first transmission rod 306 to rotate synchronously, causing the cams 603 on the two first transmission rods 306 to rotate. The cams 603 periodically lift the bottom of the V-shaped screen 601, and with the help of the spring 602, the V-shaped screen 601 vibrates up and down. The V-shaped structure and vibration are used to fully screen the raw materials. During the screening process, the first transmission rod 306 drives the second transmission rod 607 to rotate, so that the cleaning brush cleans the surface of the V-shaped screen 601 to prevent the screen holes from clogging. After screening, qualified raw materials are discharged through the screen holes of the V-shaped screen 601, and unqualified raw materials enter the connected discharge trough 201 through the discharge port of the V-shaped screen 601 and are transported to the designated position by the spiral conveyor blades 606.

[0087] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A raw material screening device for PVC pipe processing, characterized in that, include: A crushing box (1) is provided. A crushing sleeve (2) is fixedly connected to the bottom end of the crushing box (1). Two discharge grooves (201) and two positioning holes (202) are opened on the circumferential surface of the crushing sleeve (2). A crushing hole (103) is opened on one side end of the crushing box (1). A crushing wheel (5) is rotatably connected in both crushing holes (103). A motor (4) is fixedly connected to one side end of the crushing box (1). The output end of the motor (4) is fixedly connected to one end of one of the crushing wheels (5). V-shaped screen (601), the V-shaped screen (601) is slidably connected to the inner circumferential wall of the crushing sleeve (2); It also includes a screening mechanism (6), which is located inside the crushing sleeve (2) and is used to screen PVC pipe raw materials.

2. The raw material screening equipment for PVC pipe processing according to claim 1, characterized in that: The screening mechanism (6) includes: A fixing ring is fixedly connected to the inner circumference of the crushing sleeve (2). The fixing ring is located on the lower side of the V-shaped screen (601). Multiple limiting rods are slidably connected inside the fixing ring. Multiple springs (602) are fixedly connected to the adjacent ends of the V-shaped screen (601) and the fixing ring, and the multiple springs (602) are respectively sleeved on the circumferential surface of multiple limiting rods; Two positioning holes (202) are provided on the circumferential surface of the crushing sleeve (2); Two first transmission rods (306) are rotatably connected to two positioning holes (202) respectively; Two cams (603) are fixedly connected to the circumferential surface of the first transmission rod (306), and both cams (603) are used to lift the bottom of the V-shaped screen (601); Two support plates (307) are fixedly connected to the circumferential surface of the crushing sleeve (2); A spiral conveyor blade (606) is rotatably connected to the inner circumferential walls of two support plates (307); A protective cover (605) is fixedly connected to the bottom end of one of the support plates (307). A second transmission rod (607) is rotatably connected inside the protective cover (605). A V-shaped screen (601) is slidably connected to the circumferential surface of the second transmission rod (607). A first transmission rod (306) is rotatably connected inside the protective cover (605). A bevel gear (604) is fixedly connected to the circumferential surface of the spiral transmission blade (606) and one of the first transmission rods (306). A cleaning brush, which is fixedly connected to the circumferential surface of the second transmission rod (607); The transmission assembly (3) is located on one side of the crushing box (1) and is used to drive the two first transmission rods (306) to rotate synchronously.

3. The raw material screening equipment for PVC pipe processing according to claim 2, characterized in that: The transmission assembly (3) includes: Two second pulleys (305) are fixedly connected to the circumferential surfaces of two first transmission rods (306); The second belt (304) is driven to mesh with the circumferential surfaces of the two second pulleys (305); Two first pulleys (303) are fixedly connected to the circumferential surfaces of one of the crushing wheels (5) and one of the first transmission rods (306), respectively; A first belt (302) is connected to the circumferential surface of two first pulleys (303).

4. The raw material screening equipment for PVC pipe processing according to claim 3, characterized in that: Both of the crushing wheels (5) are fixedly connected to a transmission gear (301) on their circumferential surfaces, and the two transmission gears (301) mesh with each other.

5. The raw material screening equipment for PVC pipe processing according to claim 4, characterized in that: A conical sleeve (7) is fixedly connected to the inner circumference of the crushing sleeve (2), and three support seats (8) are fixedly connected to the bottom end of the crushing sleeve (2).

6. The raw material screening equipment for PVC pipe processing according to claim 5, characterized in that: The two discharge ports of the two discharge troughs (201) and the V-shaped screen (601) are interconnected.

7. The raw material screening equipment for PVC pipe processing according to claim 6, characterized in that: Two plastic sleeves (101) are fixedly connected to the circumferential surface of the crushing box (1), and a cover plate (102) is movably hinged to the top of the crushing box (1) via a hinge shaft.

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