Screening device for PVC (polyvinyl chloride) processing aid

Abstract

The utility model discloses a screening device for PVC (Polyvinyl Chloride) processing aids, which relates to the related technical field of screening machines for PVC aid processing and comprises a box body, a cross beam is transversely and movably arranged in the box body, and an L-shaped supporting rod is movably inserted in the center of the cross beam in a penetrating manner. The auxiliary is poured into the feeding hopper, the rotating column is driven by the motor to rotate, the rotating column is matched with the material storage groove to intermittently discharge the auxiliary, and therefore insufficient screening caused by excessive auxiliary on the screen is prevented, the quality of the auxiliary is improved to a certain degree, after screening is completed, the push plate is pushed upwards through the handle, and the auxiliary is discharged. And the screened PVC processing aids are taken out, meanwhile, the baffle is driven to ascend, and the screen cloth is driven to stretch outwards, so that unqualified aids on the screen cloth enter the collecting box through the discharging channel to be collected, subsequent use of the screen cloth is facilitated, meanwhile, the screened aids in the box body are taken out through the open groove, and the screening efficiency is improved. And the screening process is in a relatively closed space, so that the effect of preventing dust raising is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening machines for PVC additive processing, in particular to a screening device for PVC processing additives. Background Art

[0002] Polyvinyl chloride, abbreviated as PVC in English, is a polymer formed by the polymerization of vinyl chloride monomer in the presence of initiators such as peroxides and azo compounds, or under the action of light and heat according to the free radical polymerization mechanism; pure PVC resin is easy to decompose during processing, has poor fluidity, low impact strength, and poor weather resistance. Therefore, various auxiliary materials need to be added during the processing to improve its performance, such as lubricants, heat stabilizers, impact modifiers, processing aids, etc. In the production of PVC additive raw materials, since some particles are large, and even gravel and crushed stone are contained in the materials, the materials need to be screened to select the materials that can be used.

[0003] When the existing screening device is used, the additive is inverted on the screen at one time. Too much additive may affect the normal operation of the screen.

[0004] The existing patent (Announcement No.: CN212916511U) discloses a multifunctional screening machine for PVC additive processing, which is equipped with a folding dust cover, and the folding dust cover is fixedly connected to the stainless steel screen through a fixed frame, and the folding dust cover can be stretched through a folding dust plate. When the staff needs to feed the material, they can pull the folding dust cover to the right through the door handle. When it is pulled to the maximum width, the material can be fed through the stainless steel screen. After completion, the folding dust cover is pulled to the left. When the stainless steel screen is completely sealed, it can start working. The functions of the folding dust cover are more diversified; and the folding dust cover can be stretched through the door handle. When the staff starts to feed the material, they pull the door handle to the right to make the folding dust plate move to the right along the inner wall of the fixed frame. When it is pulled to the maximum width, the material can be fed through the stainless steel screen. After the feeding is completed, the folding dust cover is pulled to the left through the door handle. When the left end of the folding dust cover is completely attached to the inner wall position of the left end of the fixed frame, the folding dust cover is completely flat, and the stainless steel screen is completely closed. This makes the functions of the folding dust cover more diversified.

[0005] However, the above technical solution still has certain defects. When the screening machine is in use, the additive needs to be inverted on the screen at one time. When too much additive is accumulated on the screen, the screen bears a large gravity, causing the screen to deform, which may affect the normal operation of the screening machine to a certain extent. After the additive is screened, it is directly discharged through the discharge port, which will still cause dust, thereby affecting the health of the staff, and the additive that fails to be screened cannot be directly discharged, which may affect the next operation of the screening machine. Therefore, a screening device for PVC processing additives is proposed. Utility Model Content

[0006] Based on this, the purpose of the utility model is to provide a screening device for PVC processing aids to solve the technical problems raised in the above background.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screening device for PVC processing aids, comprising a box body, a crossbeam is movably arranged inside the box body, an L-shaped support rod is movably inserted at the center of the crossbeam, two groups of vibration motors are symmetrically fixedly installed on the lower surface of the crossbeam, two groups of fixing plates are fixedly installed on the inner wall of the box body below the crossbeam, a spring is fixedly installed between the top end of the fixing plate and the bottom end of the crossbeam, two groups of screens are rotatably connected to the upper surface of the crossbeam, a connecting rod is rotatably connected to the top end of the L-shaped support rod, and one end of the connecting rod is rotatably connected to the lower surface of the screen;

[0008] The rear surface of the box body is provided with a groove, and a push plate is movably connected in the groove, both side surfaces of the top end of the push plate are fixedly connected with fixing rods, one end of the fixing rod is fixedly connected with a baffle, and the baffle is movably arranged inside the two sides of the screen, and the surface of the push plate close to the L-shaped support rod is fixedly connected with a support rod, and the support rod is located below the L-shaped support rod.

[0009] As a preferred technical solution of a screening device for PVC processing aids of the utility model, a feed hopper connected to the box is fixedly connected to the top of the box, a motor located at the top of the box is fixedly installed on one side of the feed hopper, a rotating column connected to the output end of the motor is rotatably provided in the feed hopper, and a material storage groove is provided on the curved outer wall of the rotating column.

[0010] As a preferred technical solution of a screening device for PVC processing aids of the utility model, a first receiving groove is provided at the contact position between the box and the baffle, and a discharge channel connected to the inner and outer walls of the box is provided at the bottom end of the first receiving groove.

[0011] As a preferred technical solution of a screening device for PVC processing aids of the utility model, a handle is fixedly mounted on the rear surface of the push plate, and a second receiving groove is provided at the position where the groove contacts the push plate.

[0012] As a preferred technical solution of a screening device for PVC processing aids of the utility model, collecting boxes are movably mounted on both side surfaces of the box body, and the top of the collecting box is flush with the bottom of the discharge channel.

[0013] As a preferred technical solution for a screening device for PVC processing aids of the utility model, two sets of limit frames are obliquely and fixedly connected to the upper end of the beam and close to the front and rear surfaces. The front and rear surfaces of the screen are provided with spring beads engaged with the limit frames, and matching grooves are provided on the inner wall of the limit frame at the contact position with the spring beads.

[0014] As a preferred technical solution of a screening device for PVC processing aids of the utility model, a detachable mounting plate is fixedly installed on the rear surface of the box body by bolts, and a collecting frame is movably installed on the bottom end of the inner wall of the box body, and the size of the collecting frame is smaller than the size of the slot.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] The utility model pours the additive into the feed hopper, drives the rotating column to rotate through the motor, and the rotating column cooperates with the storage tank to intermittently discharge the additive, thereby preventing excessive additives on the screen from causing insufficient screening, and improving the quality of the additives to a certain extent. After the screening is completed, the push plate is pushed upward by the handle to take out the screened PVC processing additives, and at the same time drives the baffle plate to rise and the screen to open outward, so that the unqualified additives on the screen enter the collection box through the discharge channel for collection, so as to facilitate the subsequent use of the screen, and at the same time, the screened additives in the box are taken out through the slot, so that the screening process is in a relatively closed space, which has the effect of preventing dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the rotating column of the utility model;

[0021] Figure 5 For the utility model Figure 2 Schematic diagram of the local structure at A;

[0022] Figure 6 This is a schematic diagram of the first state of the internal structure of the utility model;

[0023] Figure 7 It is a schematic diagram of the second state of the internal structure of the utility model.

[0024] In the figure: 100, box body; 110, feed hopper; 111, rotating column; 112, storage trough; 113, motor; 114, detachable mounting plate; 115, collecting box; 120, push plate; 121, handle; 122, push rod; 123, fixing rod; 124, baffle; 130, crossbeam; 131, L-shaped support rod; 132, vibration motor; 133, spring; 134, fixing plate; 135, connecting rod; 136, screen; 137, limit frame; 138, spring card bead. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0026] The following describes an embodiment of the utility model based on its overall structure.

[0027] A screening device for PVC processing aids, such as Figure 1-7 As shown, it includes a box body 100, a crossbeam 130 is movably arranged inside the box body 100, an L-shaped support rod 131 is movably inserted at the center of the crossbeam 130, two groups of vibration motors 132 are symmetrically fixedly installed on the lower surface of the crossbeam 130, two groups of fixing plates 134 are fixedly installed on the inner wall of the box body 100 below the crossbeam 130, a spring 133 is fixedly installed between the top of the fixing plate 134 and the bottom of the crossbeam 130, two groups of screens 136 are rotatably connected to the upper surface of the crossbeam 130, a connecting rod 135 is rotatably connected to the top of the L-shaped support rod 131, and one end of the connecting rod 135 is rotatably connected to the lower surface of the screen 136;

[0028] A groove is provided on the rear surface of the box body 100, and a push plate 120 is movably connected in the groove. Fixed rods 123 are fixedly connected to the two side surfaces of the top of the push plate 120. One end of the fixed rod 123 is fixedly connected to a baffle 124. The baffle 124 is movably arranged inside the two sides of the screen 136. A push rod 122 is fixedly connected to the surface of the push plate 120 close to the L-shaped support rod 131. The push rod 122 is located below the L-shaped support rod 131.

[0029] When the additive needs to be screened, the additive is poured into the feed hopper 110, and the motor 113 drives the rotating column 111 to rotate. The rotating column 111 cooperates with the storage slot 112 to drive the additive to be intermittently discharged, and the vibration motor 132 cooperates with the spring 133 to drive the screen 136 to shake, so as to screen the additive. After the screening is completed, the push plate 120 is pushed upward by the handle 121, and the push plate 120 cooperates with the push rod 122 to push the L-shaped support rod 131 upward, and the L-shaped support rod 131 drives the screen 136 to rotate through the connecting rod 135. At the same time, the push plate 120 cooperates with the fixed rod 123 to drive the baffle 124 to move upward and enter the first storage slot, opening the discharge channel. The unqualified additives on the screen 136 fall into the collection box 115 through the discharge channel, so that they are collected, and then the screened additives in the box 100 can be taken out through the slot.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A feed hopper 110 connected to the box body 100 is fixedly connected to the top of the box body 100, a motor 113 located at the top of the box body 100 is fixedly installed on one side of the feed hopper 110, a rotating column 111 connected to the output end of the motor 113 is rotatably provided in the feed hopper 110, and a material storage groove 112 is provided on the curved outer wall of the rotating column 111.

[0031] The auxiliary agent is poured into the feed hopper 110 , and the motor 113 drives the rotating column 111 to rotate. The rotating column 111 cooperates with the material storage tank 112 to drive the auxiliary agent to be fed intermittently.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 A first receiving groove is provided at the contact position between the box body 100 and the baffle 124 , and a discharge channel connected to the inner and outer walls of the box body 100 is provided at the bottom end of the first receiving groove.

[0033] The baffle 124 is stored and used through the first storage groove, and unqualified additives fall out through the discharge channel and enter the collection box 115.

[0034] Please refer to Figure 2 and Figure 3 A handle 121 is fixedly mounted on the rear surface of the push plate 120 , and a second receiving groove is provided at the position where the groove contacts the push plate 120 .

[0035] The push plate 120 is pushed upward by the handle 121, and the push plate 120 is stored in the second storage slot. The push plate 120 cooperates with the L-shaped support rod 131 to drive the screen 136 to rotate for use, and the push plate 120 cooperates with the fixing rod 123 to open the baffle 124 for use.

[0036] Please refer to Figure 1 , Figure 2 , Figure 3 The collecting boxes 115 are movably mounted on both side surfaces of the box body 100, and the top of the collecting boxes 115 is flush with the bottom of the discharge channel.

[0037] The baffle 124 is opened, and unqualified auxiliary agents fall into the collection box 115 through the discharge channel, and the unqualified auxiliary agents are collected by the collection box 115 .

[0038] Please refer to Figure 6 and Figure 7 Two sets of limit frames 137 are obliquely fixedly connected to the upper end of the cross beam 130 near the front and rear surfaces. The front and rear surfaces of the screen 136 are provided with spring beads 138 engaged with the limit frames 137. The inner wall of the limit frame 137 is provided with a matching groove at the contact position with the spring beads 138.

[0039] When the screen 136 is in use, the spring clamping bead 138 cooperates with the clamping slot to fix the screen 136 on the limit frame 137, so that the screen 136 can be vibrated in cooperation with the vibration motor 132.

[0040] Please refer to Figure 1 A detachable mounting plate 114 is fixedly mounted on the rear surface of the box body 100 by bolts, and a collecting frame is movably mounted on the bottom end of the inner wall of the box body 100, and the size of the collecting frame is smaller than the size of the slot.

[0041] When some parts inside the box 100 are damaged, the parts inside the box 100 can be repaired by removing the removable mounting plate 114 from the box 100, and the screened additives can be collected and used through the collection frame, and then the collection frame can be taken out of the box 100 through the slot.

[0042] During use, when the additive needs to be screened, the additive is poured into the feed hopper 110, and the motor 113 drives the rotating column 111 to rotate, and the rotating column 111 cooperates with the storage tank 112 to drive the additive to be intermittently fed, and the vibration motor 132 cooperates with the spring 133 to drive the screen 136 to shake, so as to screen the additive. After the screening is completed, the push plate 120 is pushed upward by the handle 121, and the push plate 120 cooperates with the push rod 122 to push the L-shaped support rod 131 upward, and the L-shaped The support rod 131 drives the screen 136 to rotate through the connecting rod 135. At the same time, the push plate 120 cooperates with the fixed rod 123 to drive the baffle 124 to move upward, enter the first receiving slot, and open the discharge channel. The unqualified additives on the screen 136 fall into the collection box 115 through the discharge channel, so that they are collected, and then the screened additives inside the box 100 can be taken out through grooving. The parts not involved in the device are the same as the prior art or can be implemented using the prior art.

[0043] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A screening device for PVC processing aids, comprising a box (100), characterized in that: A crossbeam (130) is movably arranged inside the box (100), an L-shaped support rod (131) is movably inserted at the center of the crossbeam (130), two groups of vibration motors (132) are symmetrically fixedly installed on the lower surface of the crossbeam (130), two groups of fixing plates (134) are fixedly installed on the inner wall of the box (100) below the crossbeam (130), a spring (133) is fixedly installed between the top end of the fixing plate (134) and the bottom end of the crossbeam (130), two groups of screens (136) are rotatably connected to the upper surface of the crossbeam (130), a connecting rod (135) is rotatably connected to the top end of the L-shaped support rod (131), and one end of the connecting rod (135) is rotatably connected to the lower surface of the screen (136); The rear surface of the box body (100) is provided with a groove, and a push plate (120) is movably connected in the groove. The top and side surfaces of the push plate (120) are fixedly connected with fixed rods (123). One end of the fixed rod (123) is fixedly connected with a baffle (124). The baffle (124) is movably arranged inside the two sides of the screen (136). The surface of the push plate (120) close to the L-shaped support rod (131) is fixedly connected with a support rod (122), and the support rod (122) is located below the L-shaped support rod (131).

2. A screening device for PVC processing aids according to claim 1, characterized in that: A feed hopper (110) connected to the box body (100) is fixedly connected to the top of the box body (100); a motor (113) located at the top of the box body (100) is fixedly installed on one side of the feed hopper (110); a rotating column (111) connected to the output end of the motor (113) is rotatably provided in the feed hopper (110); a material storage groove (112) is provided on the curved outer wall of the rotating column (111).

3. The screening device for PVC processing aids according to claim 1, characterized in that: A first receiving groove is provided at the contact position between the box body (100) and the baffle (124), and a discharge channel connected to the inner and outer walls of the box body (100) is provided at the bottom end of the first receiving groove.

4. A screening device for PVC processing aids according to claim 1, characterized in that: A handle (121) is fixedly mounted on the rear surface of the push plate (120), and a second receiving groove is provided at the position where the groove contacts the push plate (120).

5. The screening device for PVC processing aids according to claim 3, characterized in that: Collection boxes (115) are movably mounted on both side surfaces of the box body (100), and the top end of the collection box (115) is flush with the bottom end of the discharge channel.

6. A screening device for PVC processing aids according to claim 1, characterized in that: Two groups of limit frames (137) are obliquely fixedly connected to the upper end of the cross beam (130) and near the front and rear surfaces. The front and rear surfaces of the screen (136) are provided with spring beads (138) engaged with the limit frames (137). The inner wall of the limit frame (137) is provided with a matching groove at the contact position with the spring beads (138).

7. A screening device for PVC processing aids according to claim 1, characterized in that: A detachable mounting plate (114) is fixedly mounted on the rear surface of the box body (100) by means of bolts, and a collecting frame is movably mounted on the bottom end of the inner wall of the box body (100), and the size of the collecting frame is smaller than the size of the slot.

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