Single-link linkage dual valve body metering pump
A single-rod, metering pump technology, applied to the components, pumps, pump components, etc. of the pumping device for elastic fluids, can solve the problem of reducing the metering accuracy and stability of the metering pump, the wear of the plunger and the sealing components, reducing the problems such as the service life of the metering pump, to achieve the effect of improving the metering accuracy and stability, improving the sealing performance and prolonging the service life
Inactive Publication Date: 2016-09-07
天津内燃机研究所(天津摩托车技术中心) +1
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Problems solved by technology
However, the metering pump is easily affected by external conditions when absorbing liquid, such as liquid level height, air bubbles in the liquid, opening pressure of the one-way valve, etc., which reduces the metering accuracy and stability of the metering pump
In addition, there is usually a sealing assembly between the plunger and the pump head cylinder in the plunger metering pump. The pre-tightening force generated by the sealing assembly needs to be moderate in strength. If the pre-tightening force is too strong, it will easily accelerate the wear of the plunger and the sealing assembly. If it is too small, it will easily cause liquid leakage, and if the liquid remains on the surface of the plunger for a long time, it will easily cause corrosion and reduce the service life of the metering pump
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[0012] The following is attached figure 1 And attached figure 2 , to further illustrate the principle and structure of the present invention through embodiments. A metering pump with single-link linkage and double-valve bodies, its specific structure is as follows: cylinder 1 is fixed on cylinder body support 2, and is respectively connected with metering pump cylinder body support 7 and linkage plate 4 through guide rod 5 and cylinder plunger 3 connected. The upper ends of the A plunger 20 and the B plunger 8 are respectively fixed on the two ends of the linkage plate 4 and assembled into one body. The connection between the two plungers and the cylinder body is provided with a seal combination, including an upper cover 23, a seal ring 22 and a scraper seal 21, and the left and right sides of the A and B cylinders are respectively provided with a feed port 9, and the cylinder body A cylinder liner 19 and a B cylinder liner 10 are respectively connected with the plunger. ...
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The invention discloses a single-link linkage dual valve body metering pump, which is structured as such that an air cylinder 1 is fixed on a cylinder body holder 2 and connected with a metering pump cylinder body holder 7 and a linkage plate 4 respectively through a guide rod 5 and an air cylinder plunger 3. Upper ends of an A plunger 20 and a B plunger 8 are fixed at two ends of the linkage plate respectively to be assembled integrally in parallel. Connecting portions of the plungers with cylinder bodies are both provided with sealing combination. Left and right sides of the A cylinder body and the B cylinder body are provided with feed openings 9. Bottoms of an A cylinder sleeve 19 and a B cylinder sleeve 10 are connected respectively with an A one-way valve body 16 and a B one-way valve body 14. In the B one-way valve body, a B one-way valve assembly 11 is connected with the bottom of the B cylinder sleeve. In the A one-way valve body, an A valve seat 18 is connected with the bottom of the cylinder sleeve 19, and an A valve core 17 is connected on the A valve seat. The invention effectively prevents the leakage of the metering pump, improves the metering accuracy and stability, and extends the service life of the metering pump by adopting multi-stage sealing combination and a single-link linkage dual valve body structure.
Description
technical field [0001] The invention relates to a metering pump device, in particular to a single-link linkage double-valve body metering pump for metering and distributing fluid. Background technique [0002] Metering pump is a device for metering and pumping metering of fluid. It has great market demand and wide application in chemical industry, energy, machinery, papermaking, pharmaceutical and other fields. With the development of modern industrial technology, the requirements for measuring accuracy, working reliability, medium adaptability, corrosion resistance and service life of metering pumps are getting higher and higher. At present, metering pumps mainly include plunger metering pumps and diaphragm metering pumps. The flow rate of liquid is adjusted by controlling the frequency of reciprocating motion of the plunger or diaphragm. However, the metering pump is easily affected by external conditions when absorbing liquid, such as liquid level, air bubbles in the liq...
Claims
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Login to View More IPC IPC(8): F04B13/00F04B53/02F04B53/10F04B53/16
Inventor朱棣洪彬张健胡明胡菊吕顺雅
Owner天津内燃机研究所(天津摩托车技术中心)