Mounting structure of back pressure plate and screw stacking machine
By adopting the installation structure of the backpressure plate in the screw stacker, and fixing the backpressure plate with the first and second pressurizers is used to solve the problem of pressure differential changes and clogging caused by the movement of the backpressure plate, and the stable pressure difference and efficient dehydration of the dehydration section are achieved.
Patent Information
- Application Number
- CN202422200717.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The backpressure plate in the existing screw stacker is prone to move, resulting in a change in the pressure difference of the dehydration section, and there is a problem of blockage or high moisture content of mud cakes.
The backpressure plate is adopted to fix the backpressure plate from different directions through the first and second pressurization members to prevent it from moving or deforming during operation, and to ensure the stability of the pressure difference in the dehydration section.
Effectively prevent the backpressure plate from moving or deforming, ensure the stable pressure difference in the dehydration section, avoid blockage and high moisture content of mud cakes, and improve dehydration efficiency.
Smart Images
Figure CN223292429U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sludge treatment, in particular to an installation structure of a back pressure plate and a screw stacking machine. Background Art
[0002] The spiral stacker utilizes the screw shaft extrusion principle, relying on the sludge's own gravity and the powerful extrusion force generated by the changes in the screw shaft's diameter and pitch to squeeze and dehydrate the sludge. In the concentration stage, water can flow out through the tiny gap between the floating ring and the fixed ring. In the dewatering stage, the concentrated sludge moves continuously toward the discharge outlet along the screw shaft. Under the action of the discharge outlet back pressure plate, the internal pressure gradually increases. The continuous operation of the screw shaft pushes the water in the sludge to be strongly squeezed, and finally dehydration is achieved, and the mud cake is discharged from the discharge outlet. It has the characteristics of continuous mud discharge, water and electricity saving, and durability.
[0003] Therefore, the gap between the discharge port and the back pressure plate becomes a key factor affecting the internal pressure of the dehydration section. For example, if the gap between the two is too large, the pressure difference in the dehydration section will be small, resulting in a high moisture content in the mud cake. On the contrary, if the gap is too small, it will be difficult for the mud cake to be discharged smoothly, and there is a possibility of clogging. In the prior art, a spring is used to adjust the above gap. That is, during the operation of the screw stacker, the range of movement of the back pressure plate is determined by the amount of sludge in the dehydration section. For example, when there is too much sludge, the spring is compressed by the back pressure plate to increase the gap between the discharge port and the back pressure plate. Obviously, the movable back pressure plate cannot effectively control the internal pressure of the dehydration section, and the dehydrated mud cake still has a high moisture content. Utility Model Content
[0004] In response to the deficiencies in the prior art, the utility model provides an installation structure for a back pressure plate and a screw stacking machine to solve the technical problems that the back pressure plate is prone to movement during operation, resulting in changes in the pressure difference in the dehydration section, blockage, or high moisture content in the mud cake.
[0005] The utility model provides a mounting structure for a back pressure plate, comprising:
[0006] a housing formed with a cavity;
[0007] A back pressure plate is provided in the cavity, wherein the back pressure plate is formed with a through hole for the spiral shaft to pass through, and a positioning sleeve is provided around the through hole, wherein the back pressure plate, the through hole and the positioning sleeve are coaxially arranged;
[0008] a first pressing member movably disposed on the circumference of the positioning sleeve;
[0009] a second pressing member, movably disposed on the end surface of the positioning sleeve;
[0010] Wherein, the first pressing member and the second pressing member both have a pressing state in contact with the positioning sleeve and a releasing state separated from the positioning sleeve, and the moving direction of the first pressing member is perpendicular to the moving direction of the second pressing member and the axial direction of the positioning sleeve.
[0011] The back pressure plate and the positioning sleeve are integrally formed.
[0012] A connecting hole is provided on the circumferential surface of the positioning sleeve. In a compressed state, the first compression member passes through the connecting hole so that its two ends respectively abut against the positioning sleeve and the spiral shaft.
[0013] At least one end of the second pressing member extends out of the housing and is slidably connected to the housing. The sliding direction of the second pressing member is consistent with its moving direction.
[0014] The housing is provided with a matching slide rail and a slider, and the slider is connected to the second pressing member.
[0015] The housing is provided with a guide rod, the guide rod slides through the second pressing member, and the length direction of the guide rod and the sliding direction of the slider are consistent with the sliding direction of the second pressing member.
[0016] The cross section of the back pressure plate is circular.
[0017] The utility model also provides a screw stacking machine, comprising:
[0018] discharge outlet;
[0019] In the above-mentioned mounting structure of the back pressure plate, the back pressure plate and the discharge port are arranged at a distance.
[0020] Compared with the prior art, the utility model has the following beneficial effects: the back pressure plate is passed through the screw shaft through the hole; at the same time, the back pressure plate is fixed to the screw shaft by the first pressing member and the second pressing member to prevent the back pressure plate from being affected by the amount of sludge and changing the gap between it and the discharge port during dehydration; and the moving directions of the first pressing member and the second pressing member are perpendicular to each other, so that the back pressure plate is fixed from two directions to prevent it from moving or deforming, so as to ensure the pressure difference in the dehydration section; furthermore, during the debugging process of the back pressure plate, the position of the back pressure plate can be reasonably adjusted according to the movable first pressing member and the second pressing member to avoid blockage or high moisture content of the mud cake due to unreasonable position gap. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a structural diagram of the mounting structure of the back pressure plate in one embodiment of the present utility model;
[0022] Figure 2This is a structural schematic diagram of the mounting structure of the back pressure plate in one embodiment of the present utility model from another angle;
[0023] Figure 3 This is a structural schematic diagram of the mounting structure of the back pressure plate in one embodiment of the present invention with the housing omitted.
[0024] Description of Figure Numbers:
[0025] 1. Housing; 2. Back pressure plate; 3. Positioning sleeve; 4. First pressing member; 401. Connecting hole; 5. Second pressing member; 6. Cylinder; 7. Slide rail; 8. Slider; 9. Guide rod.
[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and beneficial effects of the present invention more clearly understood, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0028] In the embodiment of the present utility model, Figure 1-Figure 3 As shown, the mounting structure of the back pressure plate includes: a shell 1, a back pressure plate 2, a first pressing member 4 and a second pressing member 5; the shell 1 is formed with a cavity; the back pressure plate 2 is arranged in the cavity, the back pressure plate 2 is formed with a through hole for the spiral shaft to pass through, and a positioning sleeve 3 is provided around the through hole, and the back pressure plate 2, the through hole and the positioning sleeve 3 are coaxially arranged; the first pressing member 4 is movably arranged on the circumference of the positioning sleeve 3; the second pressing member 5 is movably arranged on the end face of the positioning sleeve 3; wherein, the first pressing member 4 and the second pressing member 5 both have a pressing state abutting against the positioning sleeve 3 and a releasing state separated from the positioning sleeve 3, and the moving direction of the first pressing member 4 is perpendicular to the moving direction of the second pressing member 5 and the axial direction of the positioning sleeve 3.
[0029] Specifically, in the embodiment of the present invention, the housing 1 is formed with a cavity which is through-through from top to bottom and is used to install the back pressure plate 2 therein. A through hole is formed in the middle of the back pressure plate 2 for the screw shaft to pass through; Figure 2 As shown, a motor is provided outside the housing 1 to drive the screw shaft to rotate (the speed of the screw shaft should not be too high to prevent insufficient concentration and dehydration). Figure 1 、 Figure 3 As shown, a positioning sleeve 3 is provided on one end face of the pressure plate, and the positioning sleeve 3 is wrapped around the outside of the through hole, and the back pressure plate 2, the through hole, and the positioning sleeve 3 are coaxially arranged to form a whole so that the positioning sleeve 3 can also be sleeved outside the spiral shaft.
[0030] In an embodiment of the present utility model, the positioning sleeve 3 has a circumferential surface and an end surface, a first pressing member 4 is provided on the circumferential surface of the positioning sleeve 3, and a second pressing member 5 is provided on its end surface; in this way, the back pressure plate 2 can be positioned at the screw shaft using the positioning sleeve 3 through the two pressing members to prevent it from moving during operation.
[0031] Specifically, the first pressing member 4 and the second pressing member 5 are both movably arranged so that the two pressing members can form a compressed state in contact with the positioning sleeve 3 and a released state separated from the positioning sleeve 3. The two states can be switched between each other, thereby realizing a detachable connection between the back pressure plate 2, the positioning sleeve 3 and the spiral shaft, and the positions of the back pressure plate 2 and the positioning sleeve 3 can be reasonably adjusted during the debugging phase and then fixed to the spiral shaft. On the other hand, the movable directions of the two pressing members are perpendicular to each other, and the movable direction of the first pressing member 4 is perpendicular to the axial direction of the positioning sleeve 3, and the movable direction of the second pressing member 5 is parallel to the axial direction of the positioning sleeve 3. In this way, not only can the back pressure plate 2 be installed and fixed using the positioning sleeve 3 from different directions, but the movable direction of the second pressing member 5 can also be set along the discharge direction of the mud cake, so that the second pressing member 5 can provide a reverse support force along the discharge direction of the mud cake, thereby preventing the back pressure plate 2 from deforming or moving. At the same time, it does not affect the slow rotation of the back pressure plate 2 along the spiral shaft. Of course, since the second pressing member 5 is in the pressing state, the positioning sleeve 3 and the second pressing member 5 are in rotational contact, and in order to reduce the wear of the contact surface between the two, a thickening layer can be provided at the corresponding position.
[0032] In an embodiment of the present utility model, the back pressure plate 2 and the positioning sleeve 3 can be fixed to the spiral shaft by the first pressing member 4 to complete the first radial installation and fixation; and can be positioned again by the second pressing member 5 to complete the second axial installation and fixation; in this way, the back pressure plate 2 can be prevented from moving and deforming along with the moving direction of the mud cake during operation, thereby ensuring the internal pressure difference of the dehydration section and avoiding blockage or high moisture content of the mud cake.
[0033] In one embodiment, the back pressure plate 2 and the positioning sleeve 3 are integrally formed, so that the back pressure plate 2 is positioned at a corresponding position by fixing the positioning sleeve 3 .
[0034] In one embodiment, if Figure 1 、 Figure 3As shown, the circumferential surface of the positioning sleeve 3 is provided with a connecting hole 401. In the compressed state, the first pressing member 4 passes through the connecting hole 401 so that its two ends respectively abut against the positioning sleeve 3 and the spiral shaft. Specifically, in order to install the first pressing member 4 on the circumferential surface of the positioning sleeve 3, this embodiment defines the first pressing member 4 as a plurality of hexagonal countersunk bolts. A plurality of connecting holes 401 are provided on the circumferential surface of the positioning sleeve 3. The plurality of hexagonal countersunk bolts are arranged in a one-to-one correspondence with the plurality of connecting holes 401. After the hexagonal countersunk bolts are screwed into the connecting holes 401, their two ends respectively abut against the positioning sleeve 3 and the spiral shaft, or extend into the spiral shaft, thereby achieving radial installation and fixation of the positioning sleeve 3. Of course, the movable direction of the above-mentioned hexagonal countersunk bolts is set along the radial direction of the positioning sleeve 3.
[0035] In one embodiment, if Figure 1-Figure 3 As shown, at least one end of the second pressing member 5 extends outside the housing 1 and is slidably connected to the housing 1. The sliding direction of the second pressing member 5 is consistent with its movement direction. Specifically, to enable the second pressing member 5 to move along its corresponding movement direction, this embodiment provides a cylinder 6 within the housing 1. The cylinder 6 drives the first pressing member 4 to slide back and forth along the axial direction of the positioning sleeve 3, thereby allowing it to abut or separate from the end surface of the positioning sleeve 3. Furthermore, to facilitate the inspection of the position of the second pressing member 5, this embodiment defines the second pressing member 5 as two spaced-apart pressing rods, with a spiral shaft located between the two pressing rods so that the three do not affect each other during operation. Furthermore, the ends of the pressing rods extend outside the housing 1, making it easy to observe the movement direction and status of the pressing rods from outside the housing 1. Of course, to ensure that the two ends of the pressing rod are evenly stressed and can move in coordination, this embodiment provides cylinders 6 on opposite sides of the housing 1 to simultaneously drive the two ends of the pressing rods. The action of the pressing rods prevents the back pressure plate 2 from retreating.
[0036] Preferably, Figure 2 、 Figure 3 As shown, the housing 1 is provided with a matching slide rail 7 and a slider 8, and the slider 8 is connected to the second pressing member 5. In order to improve the movement stability of the second pressing member 5, this embodiment provides a slide rail 7 on the housing 1 and a slider 8 on the end of the second pressing member 5 extending out of the housing 1. The slider 8 slides on the slide rail 7 so as to follow the reciprocating movement of the second pressing member 5. Similarly, Figure 3 As shown, the housing 1 is provided with a guide rod 9, which slides through the second pressing member 5, and the length direction of the guide rod 9 and the sliding direction of the slider 8 are consistent with the sliding direction of the second pressing member 5. Of course, since the pressing rod is rod-shaped, in order to enable it to be connected to external components, a corresponding connecting base is provided at its end, which can be connected to the corresponding cylinder 6, slider 8, and guide rod 9.
[0037] like Figure 3As shown, the cross section of the back pressure plate 2 is circular.
[0038] This embodiment also provides a screw stacking machine, including a discharge port and the above-mentioned mounting structure, the discharge port and the back pressure plate 2 are spaced apart to form a channel for the mud cake to be discharged; the specific structure of the mounting structure refers to the above-mentioned embodiment. Since this air conditioner adopts all the technical solutions of the above-mentioned embodiment, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiment, which will not be repeated here.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose 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. The mounting structure of the back pressure plate is characterized by: include: a housing formed with a cavity; A back pressure plate is provided in the cavity, wherein the back pressure plate is formed with a through hole for the spiral shaft to pass through, and a positioning sleeve is provided around the through hole, wherein the back pressure plate, the through hole and the positioning sleeve are coaxially arranged; a first pressing member movably disposed on the circumference of the positioning sleeve; a second pressing member, movably disposed on the end surface of the positioning sleeve; Wherein, the first pressing member and the second pressing member both have a pressing state in contact with the positioning sleeve and a releasing state separated from the positioning sleeve, and the moving direction of the first pressing member is perpendicular to the moving direction of the second pressing member and the axial direction of the positioning sleeve.
2. The mounting structure of the back pressure plate according to claim 1, characterized in that: The back pressure plate and the positioning sleeve are integrally formed.
3. The mounting structure of the back pressure plate according to claim 1, characterized in that: A connecting hole is provided on the circumferential surface of the positioning sleeve. In a compressed state, the first compression member passes through the connecting hole so that its two ends respectively abut against the positioning sleeve and the spiral shaft.
4. The mounting structure of the back pressure plate according to any one of claims 1 to 3, characterized in that: At least one end of the second pressing member extends out of the housing and is slidably connected to the housing. The sliding direction of the second pressing member is consistent with its moving direction.
5. The mounting structure of the back pressure plate according to claim 4, characterized in that: The housing is provided with a matching slide rail and a slider, and the slider is connected to the second pressing member.
6. The mounting structure of the back pressure plate according to claim 5, characterized in that: The housing is provided with a guide rod, the guide rod slides through the second pressing member, and the length direction of the guide rod and the sliding direction of the slider are consistent with the sliding direction of the second pressing member.
7. The mounting structure of the back pressure plate according to claim 1, characterized in that: The cross section of the back pressure plate is circular.
8. The screw stacking machine is characterized by: include: discharge outlet; According to the mounting structure of the back pressure plate according to any one of claims 1 to 7, the back pressure plate and the discharge outlet are arranged at a distance.