Screw type flow control device
By using a twin-screw flow control device and a manual cleaning mechanism, the problem of flow control failure caused by screw slippage was solved, ensuring the continuity and safety of water-reducing agent production, and achieving stability of flow control and improved production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-17
AI Technical Summary
Existing screw-type flow control devices are prone to slippage after prolonged use, leading to flow control failure and affecting production continuity and safety.
A twin-screw flow control device was designed, in which the control screw B serves as a backup screw, temporarily assuming the responsibility of flow control when the main screw A slips. It is also equipped with a manual cleaning mechanism to facilitate timely detection and handling of slippage problems.
This ensures the continuity and safety of the water-reducing agent production process, avoids production interruptions and safety hazards caused by slippage, and improves production efficiency and safety.
Smart Images

Figure CN223996033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flow control technology, and in particular to a screw-type flow control device. Background Technology
[0002] In the production process of water-reducing agents, accurately adding raw materials to the production equipment in precise quantities is a crucial step. To achieve this precise quantitative addition, a screw-type flow control device plays a central role.
[0003] Existing screw-type flow control devices typically rely on a single screw structure to regulate flow during normal use. However, this single-screw operation mode generally faces the risk of screw stripping after prolonged use. Once the screw structure strips, the entire control device will directly fail and be unable to continue performing flow control tasks. In this case, emergency repairs by personnel are necessary to restore the device to normal operation. This situation not only seriously affects the continuity and stability of flow control but may also cause unnecessary delays and safety hazards to the production process. Summary of the Invention
[0004] This disclosure relates to a screw-type flow control device, which consists of a control screw A and a control screw B forming a dual-screw control device. The dual-screw control device contains a spare screw, namely control screw B. If the commonly used control screw A becomes stripped due to prolonged use, control screw B can temporarily shut off the flow, preventing the failure to properly close the water-reducing agent raw material addition channel due to stripped control screw A, thus avoiding unnecessary trouble in the water-reducing agent production process. The cleaning plate and cleaning wiper slide along the cleaning guide rail by manually moving the cleaning paddle. During the sliding process, the cleaning wiper wipes the observation window at the top of the flow tube A, allowing operators to observe whether the flow control component A has been adjusted, preventing the stripping phenomenon from going unnoticed and causing unnecessary trouble due to control A failing to intercept the flow.
[0005] In a first aspect, this disclosure provides a screw-type flow control device, specifically comprising: a support member, a cleaning guide rail fixedly mounted on the top of the support member; a cleaning slide plate slidably mounted inside the cleaning guide rail; a cleaning wiper fixedly mounted on the bottom of the cleaning slide plate; a cleaning paddle fixedly mounted on the top of the cleaning slide plate; a flow tube A fixedly mounted on the upper interior of the support member; the flow tube A having a cylindrical structure; a flow tube B fixedly mounted on the lower interior of the support member; the flow tube B having a Z-shaped structure; and the highest point of the flow tube B being horizontal to the flow tube A.
[0006] In at least some embodiments,
[0007] A connector is fixedly installed at the right end of the flow tube A; a stroke guide groove A is provided on the inner circumference of the flow tube A; a flow control component A is slidably installed inside the flow tube A.
[0008] In at least some embodiments,
[0009] The flow control component A has a cylindrical structure; a stroke slider A is symmetrically fixed on the outer circumference of the flow control component A; the stroke slider A is also slidably installed inside the stroke guide groove A.
[0010] In at least some embodiments,
[0011] A control screw A is rotatably mounted on the left end of the flow tube A; the control screw A is connected to the flow control component A via threads.
[0012] In at least some embodiments,
[0013] A connector is also fixedly installed at the left end of the flow tube B; a stroke guide groove B is provided on the inner circumference of the flow tube B; a flow control component B is slidably installed inside the flow tube B.
[0014] In at least some embodiments,
[0015] The flow control component B has a cylindrical structure; a stroke slider B is symmetrically fixed on the outer circumference of the flow control component B; the stroke slider B also slides inside the stroke guide groove B.
[0016] In at least some embodiments,
[0017] A control screw B is rotatably mounted on the right end of the flow tube B; the control screw B is connected to the flow control component B via threads; the flow tube A and the flow tube B are connected by a flow connector.
[0018] This utility model provides a screw-type flow control device, which has the following beneficial effects:
[0019] 1. This utility model designs a control device equipped with a twin-screw assembly, which combines control screw A and control screw B. Control screw B serves as a backup screw, temporarily shutting off the flow rate when the main control screw A experiences slippage due to prolonged use. This effectively prevents the water-reducing agent raw material addition channel from failing to close properly due to slippage of control screw A, thus ensuring the smooth operation of the water-reducing agent production process and avoiding unnecessary production interruptions.
[0020] 2. This utility model also cleverly incorporates a manual cleaning mechanism. Users simply need to move the cleaning lever to drive the cleaning slide and its cleaning wiper blades smoothly along the cleaning guide rail. During movement, the cleaning wiper blades meticulously wipe the observation window at the top of the flow control tube A, ensuring the window is clear and unobstructed. This design allows operators to directly monitor the adjustment status of the flow control component A through the observation window, promptly identifying potential slippage issues and preventing subsequent problems caused by the flow control component A's ineffective interception, further improving production safety and efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0022] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.
[0023] In the attached diagram:
[0024] Figure 1 A schematic diagram of the overall structure of this application is shown;
[0025] Figure 2 This diagram shows the overall half-section structure of this application;
[0026] Figure 3 This invention provides a schematic diagram of the control screw A in its split-state configuration.
[0027] Figure 4 This application shows Figure 3 Enlarged structural diagram of section A;
[0028] Figure 5 A schematic diagram of the closed-state structure of the flow control element B of this application is shown;
[0029] Figure 6 A schematic diagram of the closed state structure of the flow control component A of this application is shown;
[0030] List of reference numerals
[0031] 1. Support components; 101. Clean the guide rails; 102. Clean the sliding plate; 103. Clean the wiping plate; 104. Clean the paddle shifters;
[0032] 2. Flow tube A; 201. Stroke guide groove A; 202. Flow control component A; 203. Stroke slider A; 204. Control screw A;
[0033] 3. Flow tube B; 301. Stroke guide groove B; 302. Flow control component B; 303. Stroke slider B; 304. Control screw B;
[0034] 4. Flow connectors. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0036] Please refer to Figures 1 to 6 :
[0037] Example 1:
[0038] This utility model proposes a screw-type flow control device, comprising: a support member 1, a cleaning guide rail 101 fixedly installed on the top of the support member 1; a cleaning slide plate 102 slidably installed inside the cleaning guide rail 101; a cleaning wiper 103 fixedly installed at the bottom of the cleaning slide plate 102; a cleaning paddle 104 fixedly installed at the top of the cleaning slide plate 102; a flow pipe A2 fixedly installed at the upper inside of the support member 1; the flow pipe A2 has a cylindrical structure; a flow pipe B3 fixedly installed at the lower inside of the support member 1; the flow pipe B3 has a Z-shaped structure; and the highest point of the flow pipe B3 is horizontal with the flow pipe A2.
[0039] In Example 2, based on Example 1, a connector is fixedly installed at the right end of the flow tube A2; a stroke guide groove A201 is formed on the inner circumference of the flow tube A2; a flow control component A202 is slidably installed inside the flow tube A2; the flow control component A202 has a cylindrical structure; stroke sliders A203 are symmetrically fixed on the outer circumference of the flow control component A202; the stroke sliders A203 are also slidably installed inside the stroke guide groove A201; a control screw A204 is rotatably installed at the left end of the flow tube A2; the control screw A204 is connected to the flow control component A202 through threads, and the flow control component A202 is activated by manually rotating the control screw A204. The control screw A204 rotates, causing its flow control component A202 and stroke slider A203 to move along the stroke guide groove A201. This movement of the flow control component A202 changes the size of the sealing part of the flow connector 4, thereby controlling the flow rate. By manually moving the cleaning lever 104, the cleaning slide plate 102 and cleaning wiper 103 can slide along the cleaning guide rail 101. During the sliding process, the cleaning wiper 103 can wipe the observation window on the top of the flow tube A2, allowing the operator to observe whether the flow control component A202 has been adjusted.
[0040] In Example 3, based on Example 2, a connector is also fixedly installed at the left end of the flow tube B3; a stroke guide groove B301 is formed on the inner circumference of the flow tube B3; a flow control component B302 is slidably installed inside the flow tube B3; the flow control component B302 has a cylindrical structure; stroke sliders B303 are symmetrically fixed on the outer circumference of the flow control component B302; the stroke sliders B303 also slide inside the stroke guide groove B301; a control screw B304 is rotatably installed at the right end of the flow tube B3; the control screw B304 is connected to the flow tube via threads. The control component B302 is connected; the flow tube A2 and the flow tube B3 are connected through the flow connector 4. If the control screw A204 slips, and the raw material addition channel is in the open state but needs to be closed, the control screw B304 can be rotated. This rotation will cause the flow control component B302 and the stroke slider B303 to move along the stroke guide groove B301, so that the flow control component B302 blocks the flow port of the flow connector 4, thereby closing the channel and avoiding unnecessary trouble caused by the raw material channel not being closed in time.
[0041] The working principle of this embodiment is as follows: In use, the control screw A204 is manually rotated, causing it to move its flow control component A202 and stroke slider A203 along the stroke guide groove A201. This movement of the flow control component A202 changes the size of the sealing portion of the flow connector 4, thereby controlling the flow rate. If the control screw A204 slips, and the raw material adding channel is currently open but needs to be closed, the control screw B304 can be rotated. This rotation causes its flow control component B302 and stroke slider B303 to move along the stroke guide groove B301, sealing the flow connector 4's opening and closing the channel. This avoids unnecessary problems caused by untimely closure of the raw material channel.
[0042] The following points should be noted in this article:
[0043] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.
[0044] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0045] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A screw-type flow control device comprising: characterized in that, Supporting piece (1), the top of supporting piece (1) is fixedly installed with cleaning guide rail (101);The inside of cleaning guide rail (101) is slidably installed with cleaning sliding plate (102);The bottom of cleaning sliding plate (102) is fixedly installed with cleaning wiper (103);The top of cleaning sliding plate (102) is fixedly installed with cleaning wiper (104); The inside of the upper end of supporting piece (1) is fixedly installed with flow pipe A (2);Flow pipe A (2) is cylindrical structure;The inside of the lower end of supporting piece (1) is fixedly installed with flow pipe B (3);Flow pipe B (3) is Z-shaped structure;The highest end of flow pipe B (3) is horizontally arranged with flow pipe A (2).
2. The screw type flow control device according to claim 1, wherein, The right end of flow pipe A (2) is fixedly installed with connector;The circumferential inner wall of flow pipe A (2) is provided with stroke guide groove A (201);The inside of flow pipe A (2) is slidably installed with flow control member A (202).
3. The screw type flow control device according to claim 2, wherein, Flow control member A (202) is cylindrical structure;The circumferential outer wall of flow control member A (202) is symmetrically fixed with stroke slider A (203);Stroke slider A (203) is also slidably installed in the inside of stroke guide groove A (201).
4. The screw type flow control device according to claim 3, wherein, The left end of flow pipe A (2) is rotatably installed with control screw A (204);Control screw A (204) is connected with flow control member A (202) through thread.
5. The screw type flow control device according to claim 4, wherein, The left end of flow pipe B (3) is also fixedly installed with connector;The circumferential inner wall of flow pipe B (3) is provided with stroke guide groove B (301);The inside of flow pipe B (3) is slidably installed with flow control member B (302).
6. The screw type flow control device according to claim 5, wherein, Flow control member B (302) is cylindrical structure;The circumferential outer wall of flow control member B (302) is symmetrically fixed with stroke slider B (303);Stroke slider B (303) is also slidably installed in the inside of stroke guide groove B (301).
7. The screw type flow control device according to claim 6, wherein, The right end of flow pipe B (3) is rotatably installed with control screw B (304);Control screw B (304) is connected with flow control member B (302) through thread;Flow pipe A (2) and flow pipe B (3) are connected through flow connector (4).