Metering pump transmission device capable of adjusting internal flow

Abstract

The utility model relates to the technical field of metering pump transmission devices, and discloses a metering pump transmission device capable of adjusting internal flow, which comprises a metering pump body, a flow adjusting mechanism is arranged on the metering pump body, and brake components which are symmetrically arranged are fixedly connected in the vertical direction of the flow adjusting mechanism. An original flow adjusting mechanism is improved, a brake assembly is additionally arranged, when flow adjustment is carried out, adjustment can be carried out according to the needed flow only by pulling a flow adjusting hand wheel outwards, a spring is stretched and then rotated, the flow adjusting hand wheel is loosened, and under the acting force of the spring, the flow adjusting hand wheel returns to the original position; the flow adjusting mechanism is arranged on the brake assembly and fixed under the action of a brake block in the brake assembly, a hand wheel screwing bolt does not need to be used for fixing the flow adjusting mechanism, operation is simplified, and meanwhile the flow adjusting mechanism can be prevented from rotating due to the fact that the hand wheel screwing bolt is forgotten to be screwed, so that flow adjustment is changed, and metering accuracy is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of metering pump transmission devices, in particular to a metering pump transmission device capable of adjusting internal flow. Background Art

[0002] A metering pump is a special positive displacement pump that can meet the needs of various strict process flows and is used to accurately measure and transport liquids, especially corrosive liquids. Its flow rate can be adjusted steplessly within the range of 0-100%, and has the characteristic of maintaining a constant flow rate that is independent of the discharge pressure. The transmission device of a metering pump is its core component, which is mainly used to provide power to the pump body, so that the flow parts can move and change the volume, thereby driving the pump to inhale, discharge and meter the liquid. The transmission device is usually driven by a motor or pneumatic system, and transmits power through a shaft connected to the pump body.

[0003] At present, the publication number CN214577684U discloses a metering pump, including a housing, a pump head connected to one side of the housing, an inlet check valve assembly and an outlet check valve assembly installed on the pump head, a diaphragm assembly is arranged in the pump head, a motor is installed on the upper part of the housing, a turbine and a worm are arranged in the housing, a connecting rod that can slide forward and backward is arranged in the housing, the connecting rod is located behind the diaphragm assembly for driving its movement, the main shaft and the turbine slide along their axial direction and rotate synchronously, an inclined guide column is arranged on the main shaft, a concave cavity for the inclined guide column to be inserted is arranged on the connecting rod, the concave cavity is arranged tilted backward, the inclined guide column is slidably arranged in the concave cavity and cooperates with the concave cavity to drive the connecting rod to move forward and backward, a stroke adjustment handle that can drive the main shaft to slide left and right is arranged on the housing, and the inclined guide column can rotate in the concave cavity to drive the connecting rod to slide forward and backward. The metering pump provided by the above technology, the inclined guide column rotates to drive the connecting rod to slide forward and backward, and the stroke adjustment handle drives the main shaft to slide left and right to adjust the contact position of the inclined guide column and the connecting rod, the structure is simple, and the operation is convenient.

[0004] However, the above technology still has the following problems:

[0005] When adjusting the flow of a metering pump, the flow adjustment handwheel is rotated for adjustment and fixed with the handwheel locking bolt. The operation is too complicated. In addition, the handwheel locking bolt may be forgotten to be tightened after adjusting the flow, causing the adjustment handwheel to rotate due to external factors or self-generated factors, resulting in inaccurate metering of the metering pump. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a metering pump transmission device capable of adjusting internal flow, by improving the original flow regulating mechanism and adding a brake assembly, so that after adjusting the flow, it is no longer necessary to use a hand wheel to tighten the bolts for fixing.

[0007] The utility model provides the following technical solution: a metering pump transmission device capable of adjusting internal flow, comprising a metering pump body, a flow regulating mechanism being arranged on the metering pump body, and a symmetrically placed brake assembly being fixedly connected in the vertical direction of the flow regulating mechanism.

[0008] Furthermore, the flow regulating mechanism includes an outer rod connected to the connecting rod of the metering pump body, a sliding cavity is opened in the outer rod, a spring is fixedly connected to the inner wall of the sliding cavity, the output end of the spring is fixedly connected to the inner rod, the front end of the inner rod is fixedly connected to a flow regulating handwheel, and the surface of the flow regulating handwheel is fixedly connected to a cylindrical baffle.

[0009] Furthermore, a rubber ring is fixedly connected to the surface of the outer rod.

[0010] Furthermore, the brake assembly includes a fixed block fixed on the surface of the metering pump body, the surface of the fixed block is provided with a first groove, a rotating shaft is rotatably connected in the first groove, a connecting block is rotatably connected to the rotating shaft, a second groove arranged in parallel is provided on the surface of the connecting block, and a brake block is connected to the connecting block.

[0011] Furthermore, the brake block is arc-shaped and gradually decreases toward the front end.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] This metering pump transmission device that can adjust the internal flow improves the original flow regulating mechanism and adds a brake assembly, so that there is no need to use a handwheel to tighten the bolts for fixing, and the operation is simpler. At the same time, it can also avoid the flow regulating mechanism from rotating due to external reasons or internal reasons after the flow regulating mechanism is adjusted, thereby causing the flow regulation value to change and affecting the accuracy of the metering of the metering pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the flow regulating mechanism of the utility model;

[0016] Figure 3 The three-dimensional structure diagram of the brake assembly of the utility model is shown in FIG.

[0017] Figure 4 for Figure 1 Enlarged view of point A above.

[0018] In the figure: 1. metering pump body; 2. flow regulating mechanism; 201. outer rod; 202. sliding cavity; 203. spring; 204. inner rod; 205. flow regulating hand wheel; 206. cylindrical baffle; 3. brake assembly; 301. fixed block; 302. first groove; 303. rotating shaft; 304. connecting block; 305. second groove; 306. brake block; 4. rubber ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figures 1 to 4 A metering pump transmission device capable of adjusting internal flow comprises a metering pump body 1, on which a flow regulating mechanism 2 is arranged, and a symmetrically placed brake assembly 3 is fixedly connected in a vertical direction of the flow regulating mechanism 2.

[0021] The dust suppression spray device for landfill in the utility model is similar to the existing metering pump structure, such as the metering pump disclosed in the publication number CN214577684U. The main improvement of the utility model is that by improving the original flow regulating mechanism 2 and adding a brake assembly 3, it is no longer necessary to use a hand wheel to tighten the bolts for fixing, which makes the operation simpler. At the same time, it can also avoid that after the flow regulating mechanism 2 is adjusted, the flow regulating mechanism 2 rotates due to external reasons or its own reasons, resulting in inaccurate metering of the metering pump, such as Figures 1 to 4 As shown, the metering pump transmission device capable of adjusting the internal flow in the utility model is used. When the flow of the metering pump needs to be adjusted, the flow adjustment hand wheel 205 is first pulled outward, the outer rod 201 does not move, the inner rod 204 slides outward along the sliding cavity 202, the spring 203 is stretched, and at the same time, the cylindrical baffle 206 is away from the brake block 306, and the brake block 306 no longer plays a fixing role on the outer rod 201. At this time, the flow adjustment hand wheel 205 is turned to adjust the flow. After the flow is adjusted, the flow adjustment hand wheel 205 is released. 5. Under the action of the spring 203, the inner rod 204 moves inward along the sliding cavity 202, and the cylindrical baffle 206 also moves therewith until the cylindrical baffle 206 contacts the brake block 306, and applies pressure to the brake block 306 to press the brake block 306 on the rubber ring 4, making the fit more closely, thereby ensuring sufficient friction force to fix the flow regulating mechanism 2 and prevent it from rotating under the influence of external factors or its own factors, thereby causing the flow regulating value to change and affecting the accuracy of the metering pump.

[0022] like Figure 2As shown, the flow regulating mechanism 2 includes an outer rod 201 connected to the connecting rod of the metering pump body 1, a sliding cavity 202 is opened in the outer rod 201, a spring 203 is fixedly connected to the inner wall of the sliding cavity 202, the output end of the spring 203 is fixedly connected to the inner rod 204, the front end of the inner rod 204 is fixedly connected to the flow regulating hand wheel 205, and the surface of the flow regulating hand wheel 205 is fixedly connected to the cylindrical baffle 206.

[0023] Specifically, when it is necessary to adjust the flow of the metering pump, first pull the flow adjustment handwheel 205 outward, the outer rod 201 remains stationary, the inner rod 204 slides outward along the sliding cavity 202, the spring 203 is stretched, and at the same time, the cylindrical baffle 206 moves away from the brake block 306, and the brake block 306 no longer fixes the outer rod 201. At this time, turn the flow adjustment handwheel 205 to adjust the flow. After adjusting the flow, release the flow adjustment handwheel 205. Under the action of the spring 203, the inner rod 204 moves inward along the sliding cavity 202, and the cylindrical baffle 206 also moves therewith until the cylindrical baffle 206 contacts the brake block 306 and applies pressure to move the brake block 306, so that the brake block 306 is pressed on the rubber ring 4, and the fit is closer, thereby ensuring sufficient friction to fix the flow adjustment mechanism 2.

[0024] like Figure 2 As shown, a rubber ring 4 is fixedly connected to the surface of the outer rod 201 .

[0025] Specifically, the rubber material has good anti-slip properties and a large surface friction, while the surface of the outer rod 201 is relatively smooth. Adding the rubber ring 4 can improve the fixing effect of the brake block 306 on the flow regulating mechanism 2.

[0026] like Figure 3 As shown, the brake assembly 3 includes a fixed block 301 fixed on the surface of the metering pump body 1, the surface of the fixed block 301 is provided with a first groove 302, a rotating shaft 303 is rotatably connected in the first groove 302, a connecting block 304 is rotatably connected to the rotating shaft 303, a second groove 305 arranged in parallel is provided on the surface of the connecting block 304, and a brake block 306 is connected to the connecting block 304.

[0027] Specifically, when adjusting the flow rate, the flow adjustment hand wheel 205 is pulled, the spring 203 is stretched, and the cylindrical baffle 206 also moves and disengages from the brake block 306. At this time, the brake block 306 rotates downward around the rotating shaft 303 under the action of its own gravity, away from the rubber ring 4, and no longer fixes the flow adjustment mechanism 2, and the flow adjustment can be performed as needed. After the flow rate is adjusted, the flow adjustment hand wheel 205 is released, and the cylindrical baffle 206 moves inward under the action of the spring 203 until the cylindrical baffle 206 contacts the brake block 306, and the brake block 306 below is rotated upward with the rotating shaft 303 until it contacts the rubber ring 4, thereby fixing the flow adjustment mechanism 2. After the brake block 306 is worn, the screws can also be quickly unscrewed, the brake block 306 can be taken out of the second groove 305, and replaced.

[0028] like Figure 3 As shown, the brake block 306 is arc-shaped and gradually decreases toward the front end.

[0029] Specifically, when the flow is adjusted, when the cylindrical baffle 206 moves forward, the brake block 306 can rotate downward due to its own gravity. When the cylindrical baffle 206 is pulled back by the spring 203, it moves along the surface of the brake block 306 and drives the brake block 306 to rotate upward until it contacts the rubber ring 4.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A metering pump transmission device capable of adjusting internal flow, comprising a metering pump body (1), a flow regulating mechanism (2) being arranged on the metering pump body (1), characterized in that: The flow regulating mechanism (2) is fixedly connected in the vertical direction with a symmetrically placed brake assembly (3).

2. A metering pump transmission device capable of adjusting internal flow according to claim 1, characterized in that: The flow regulating mechanism (2) comprises an outer rod (201) connected to a connecting rod of a metering pump body (1); a sliding cavity (202) is provided in the outer rod (201); a spring (203) is fixedly connected to the inner wall of the sliding cavity (202); an output end of the spring (203) is fixedly connected to an inner rod (204); a flow regulating hand wheel (205) is fixedly connected to the front end of the inner rod (204); and a cylindrical baffle (206) is fixedly connected to the surface of the flow regulating hand wheel (205).

3. A metering pump transmission device capable of adjusting internal flow according to claim 2, characterized in that: A rubber ring (4) is fixedly connected to the surface of the outer rod (201).

4. A metering pump transmission device capable of adjusting internal flow according to claim 1, 2 or 3, characterized in that: The brake assembly (3) comprises a fixed block (301) fixed on the surface of the metering pump body (1); a first groove (302) is provided on the surface of the fixed block (301); a rotating shaft (303) is rotatably connected in the first groove (302); a connecting block (304) is rotatably connected to the rotating shaft (303); a second groove (305) arranged in parallel is provided on the surface of the connecting block (304); and a brake block (306) is connected to the connecting block (304).

5. A metering pump transmission device capable of adjusting internal flow according to claim 4, characterized in that: The brake block (306) is arc-shaped and gradually decreases toward the front end.

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