Filter press chain adjusting device
By designing a filter press chain adjustment device, using limit hooks, tension hooks, and calipers to measure the chain tension and vertical lifting distance, the error problem of manually adjusting chain tension is solved, thus improving the safety and practicality of the chain and equipment.
Patent Information
- Application Number
- CN202520388828.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-07
AI Technical Summary
The adjustment of chain tension in existing filter presses relies on manual experience, resulting in insufficient accuracy and significant human perception errors, which affect the safety and sealing of the chain and equipment.
A filter press chain adjustment device was designed, including a limit hook, a tension hook, calipers, and a tension gauge. The chain tension is calculated by measuring the chain tension and vertical lifting distance, and the measurement accuracy is improved by using an electronic controller and a pressure sensor.
It enables precise measurement of chain tension, protects the safety of the chain and filter press equipment, avoids no-load or overload of the drive equipment, and improves overall safety and practicality.
Smart Images
Figure CN223930782U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of filter press technology, and specifically to a filter press chain adjustment device. Background Technology
[0002] A filter press is a mechanical device that uses pressure to separate liquids, and it is a commonly used solid-liquid separation device. It includes a basic frame, thrust plates at both ends of a main beam, and a pressing head. The automatic pull plates (or filter plates) in the middle of the main beam are the material storage components. The material is stored in the space between adjacent pull plates. After the liquid is separated, all the pull plates are pulled apart to release the dry material. In the automatic pull plate mechanism of the filter press, the pull plate chain is the main working component. Because it needs to drive the pull plate trolley in frequent reciprocating motion, after a period of operation, the tensioned pull plate chain will gradually loosen, affecting the normal operation of the pull plate trolley. Sometimes, the loose chain may even collide with the chain box, not only wearing down the chain box but also damaging the chain links. Furthermore, when the chain is too tense, it may affect the sealing gap between the pull plates and easily cause the chain to break. Therefore, it is often necessary to manually readjust the chain tension periodically to maintain the appropriate tension. This method of manually pressing down on the chain to feel whether it is tensioned is not accurate enough, requires human experience, and has a large margin of error in human perception. Utility Model Content
[0003] This utility model provides a filter press chain adjustment device for detecting the tension of the chain on the filter press, improving the accuracy of chain installation, and protecting the safety of the chain.
[0004] A filter press chain adjustment device includes a housing. A limiting hook and a tension hook for adjusting the chain extend from a waist-shaped hole on the top surface of the housing. The limiting hook is located on the right side of the tension hook. A handle is provided on one side of the limiting hook, and a limiting pin is provided on the side of the limiting hook opposite the handle. The limiting pin is used to engage with a limiting hole on a locking device, which is detachably connected to the housing. A slider is provided on the base of the tension hook, and the slider is used to slide with a slide rail located inside the housing. A tension gauge is provided on the left side of the base. The device also includes a caliper located between the line connecting the limiting hook and the tension hook and perpendicular to the top surface of the housing. The caliper's scale is fitted inside the housing, and the back of the caliper has teeth for meshing with a first gear. The central shaft of the first gear extends out of the top surface of the housing and is connected to a handwheel.
[0005] Optionally, the chassis also includes a horizontally recessed limiting groove embedded in the top surface of the chassis, the limiting groove being used to match the gap of the tension gauge.
[0006] Optionally, a pressure sensor is provided at the top of the caliper, and the pressure sensor is connected to the electronic controller, which is located on the top surface of the chassis.
[0007] Optionally, the positioning device consists of two positioning plates perpendicular to each other, one of which has multiple limiting holes, and the other positioning plate is used to connect to the chassis.
[0008] Optionally, the caliper is a micrometer.
[0009] Optionally, a horizontal drive device is provided on the right side of the pull hook to control the pull hook to move closer to the limit hook.
[0010] The beneficial effects of this utility model are:
[0011] The filter press chain adjustment device provided by this utility model uses a tension hook and a limit hook to measure the tension value of the chain in its actual installation state. At the same time, a vertically set caliper is used to measure the maximum distance the chain can be lifted in the vertical direction. The chain tension is calculated by measuring the measured tension and the lifting distance. This solves the problem of large errors in estimating chain tension by manual experience in the prior art. The precise measurement not only protects the chain, but also helps to protect the safety of other equipment in the filter press, while avoiding no-load or overload of the drive equipment, thereby improving the safety and practicality of the entire filter press. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural schematic diagram of the filter press chain adjustment device provided in this application;
[0013] Figure 2 This is a schematic diagram of the caliper lifting mechanism provided in the embodiments of this application.
[0014] In the picture:
[0015] 1: Chassis; 11: Limiting groove; 2: Limiting hook; 3: Pulling hook; 4: Pull gauge; 5: Caliper; 6: Scale sleeve; 7: First gear; 8: Handwheel. Detailed Implementation
[0016] The technical solutions in the embodiments of the application will now be clearly and completely described with reference to the accompanying drawings. Furthermore, the phrases "in one embodiment" or "in one embodiment" appearing throughout this specification do not necessarily refer to the same embodiment. Moreover, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0017] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.
[0018] The chain in a filter press is a crucial mechanism for controlling the opening and closing of the pull plates. Because it drives the pull plate trolley in frequent reciprocating motions, the tensioned chain gradually loosens after a period of operation, affecting the normal operation of the pull plate trolley. Sometimes, a loose chain can even collide with the chain box, causing wear and tear on the chain box and damaging the chain links. Furthermore, when the chain is too tense, it may affect the sealing gap between the pull plates and easily cause the chain to break. Therefore, manual readjustment is frequently required to maintain the chain tension at the appropriate level. However, manually pressing down on the chain to feel the tension is not accurate enough, requires human experience, and is subject to significant human perception errors. In view of this, this utility model provides a filter press chain adjustment device, which is described in detail below with reference to the accompanying drawings.
[0019] A filter press chain adjustment device includes a housing 1. A limiting hook 2 and a tension hook 3 for adjusting the chain extend from a waist-shaped hole on the top surface of the housing 1. The limiting hook 2 is located on the right side of the tension hook 3. A handle is provided on one side of the limiting hook 2, and a limiting pin is provided on the side opposite the handle. The limiting pin is used to engage with a limiting hole on a locking device, which is detachably connected to the housing 1. A slider is provided on the base of the tension hook 3, and the slider is used to slide along a slide rail located inside the housing 1. A tension gauge 4 is provided on the left side of the base. The device also includes a caliper 5 positioned between the limiting hook 2 and the tension hook 3 and perpendicular to the top surface of the housing 1. A sleeve 6 of the caliper 5 is located inside the housing 1. The back of the caliper 5 has teeth for meshing with a first gear 7. The central shaft of the first gear 7 extends out of the top surface of the housing 1 and is connected to a handwheel 8.
[0020] like Figure 1 and Figure 2 As shown, the logic used in the chain adjustment device provided by this utility model is as follows:
[0021] Insert the limit hook 2 into a link of the installed chain, pull the handle outward to lock the limit hook 2 into the locking device so that the limit hook 2 abuts against one end of the link. Then insert the tension hook 3 into any link at a preset interval. The operator pulls the tension gauge 4 by hand to move the tension hook 3 to the left. When it moves to the end of the link that is in the same position as the limit hook 2, check the tension value displayed on the tension gauge 4. This tension value is the tension between two adjacent links in the chain, that is, the tension of the chain.
[0022] Additionally, the caliper 5, located on the line connecting the limit hook 2 and the tension hook 3 and perpendicular to the top surface of the chassis 1, needs to be used separately from the tension gauge 4. For example... Figure 2 As shown (the horizontal dotted line in the figure represents the top surface of the chassis), turn the handwheel 8 on the top of the chassis 1. The handwheel 8 drives the first gear 7 to rotate. The teeth on the first gear 7 mesh with the teeth on the back of the caliper 5, causing the caliper 5 to move vertically upward or downward. The distance that the caliper 5 extends upward beyond the surface of the chassis 1 minus the distance that the chain is from the surface of the chassis 1 is the height to which the chain is raised.
[0023] Specifically, when caliper 5 is moved upwards until it completely contacts the chain (i.e., caliper 5 can no longer rise), the displacement reading on caliper 5 indicates the distance caliper 5 extends upwards beyond the surface of the chassis 1. The maximum distance the chain extends above its normal installation level indicates the chain tension in the current installation state. Clearly, the larger this value, the looser the chain; conversely, the smaller the value, the tighter the chain. It should be noted that the standard for judging chain tension using this value needs to be comprehensively set based on the entire chain length, the magnitude of the force applied to the chain, and other parameters. This embodiment does not impose specific limitations on this. When adjusting the chain tension, if the actual measured reading is equal to the standard value or within the preset range, it indicates that the tension meets the preset requirements, and chain adjustment should be stopped.
[0024] In addition, such as Figure 1 As shown, the housing 1 also includes a horizontally embedded limiting groove 11 on the top surface of the housing 1. The limiting groove 11 is used to match the gap with the tension gauge 4. The purpose of setting the limiting groove 11 is to fix the tension direction of the tension gauge 4, so that the tension direction is horizontal with the extension direction of the chain, thereby improving the accuracy of the tension measurement.
[0025] In some embodiments, a pressure sensor may be provided at the top of the caliper 5. The pressure sensor is connected to an electronic controller, which is located on the top surface of the housing 1. The function of the pressure sensor is to measure the pressure value of the chain link at the point when the caliper 5 is raised to its highest position. The magnitude of the force is used to calculate the magnitude of the force on the chain on both sides of the detection point by utilizing the rule of a right triangle. Specifically, if the detected pressure value is F, then the tension in the chain is f = F / (2 * cosθ), where θ is the angle between the extension direction of the chain and the vertical direction perpendicular to the top surface of the housing 1.
[0026] In other embodiments, the aforementioned positioning device may consist of two positioning plates perpendicular to each other. One of the positioning plates has multiple limiting holes, and the other positioning plate is used to connect to the chassis 1. That is, one plate is folded into a right angle, with one side used to connect to the chassis 1 and the other side used to provide limiting holes for the limiting pins on the limiting hook 2 to be inserted.
[0027] In addition, to improve the measurement accuracy of caliper 5, caliper 5 is set as a micrometer, meaning that the measurement value can be retained to three decimal places.
[0028] In other embodiments, a horizontal drive device is provided on the right side of the tension hook 3 to control the tension hook 3 to move closer to the limiting hook 2. When the chain tension is not being monitored, the chain adjustment device provided by this invention can also be used to assist in the installation of a broken chain. Specifically, the position of the limiting hook 2 is fixed, and the limiting hook 2 is inserted into a complete link near one joint of the broken chain. The tension hook 3 is then fitted into a complete link near another broken chain joint. The horizontal drive device is controlled to move the tension hook 3 closer to the limiting hook 2, facilitating the installation of new link structures at the two joints and chain maintenance by the operator. This embodiment does not specifically limit the horizontal drive device; it can be a lead screw motor or other device capable of driving the tension hook 3 to move horizontally.
[0029] Finally, the present invention provides a filter press chain adjustment device, including a housing 1, a limiting hook 2 and a tension hook 3 for adjusting the chain extending from a waist-shaped hole on the top surface of the housing 1, the limiting hook 2 being located on the right side of the tension hook 3; a handle is provided on one side of the limiting hook 2, and a limiting pin is provided on the side of the limiting hook 2 opposite to the handle, the limiting pin being used to engage with the limiting hole on the locking device, the locking device being detachably connected to the housing 1; a slider is provided on the base of the tension hook 3, the slider being used to slide and connect with the slide rail provided in the housing 1, and a tension gauge 4 is provided on the left side of the base; it also includes a caliper 5 located between the limiting hook 2 and the tension hook 3 and perpendicular to the top surface of the housing 1, the caliper 5 having a sleeve 6 located inside the housing 1, and the back of the caliper 5 having teeth for meshing with a first gear 7, the central shaft of the first gear 7 extending out of the top surface of the housing 1 and connected to a handwheel 8. This invention solves the problem of large errors in estimating chain tension manually, thus improving the safety and practicality of the entire filter press.
[0030] It should be noted that all the above embodiments belong to the same inventive concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not exhaustive, please refer to the description in other embodiments. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to mutually.
[0031] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A filter press chain adjustment device, comprising a housing (1), characterized in that, The limiting hook (2) and tension hook (3) for adjusting the chain extend from the waist-shaped hole on the top surface of the chassis (1). The limiting hook (2) is located on the right side of the tension hook (3). A handle is provided on one side of the limiting hook (2), and a limiting pin is provided on the side of the limiting hook (2) opposite to the handle. The limiting pin is used to engage with the limiting hole on the locking device. The locking device is detachably connected to the chassis (1). The base of the tension hook (3) is provided with a slider, which is used to engage with the limiting hole on the chassis (1). The slide rail inside the chassis (1) is slidably connected, and a tension gauge (4) is provided on the left side of the base; it also includes a caliper (5) located between the line connecting the limiting hook (2) and the tension hook (3) and perpendicular to the top surface of the chassis (1), the caliper (5) has a sleeve (6) inside the chassis (1), and the back of the caliper (5) has teeth for meshing with the first gear (7), the central shaft of the first gear (7) extends out of the top surface of the chassis (1) and is connected to the handwheel (8).
2. The filter press chain adjustment device according to claim 1, characterized in that, The chassis (1) also includes a horizontally embedded limiting groove (11) on the top surface of the chassis (1), the limiting groove (11) being used to match the gap with the tension gauge (4).
3. The filter press chain adjustment device according to claim 2, characterized in that, The caliper (5) is equipped with a pressure sensor at its top, and the pressure sensor is connected to the electronic controller. The electronic controller is located on the top surface of the chassis (1).
4. The filter press chain adjustment device according to claim 3, characterized in that, The positioning device consists of two positioning plates that are perpendicular to each other. One of the positioning plates is provided with multiple limiting holes, and the other positioning plate is used to connect with the chassis (1).
5. The filter press chain adjustment device according to claim 3, characterized in that, The caliper (5) is a micrometer.
6. The filter press chain adjustment device according to claim 1, characterized in that, A horizontal drive device is provided on the right side of the pull hook (3) to control the pull hook (3) to move closer to the limit hook (2).