A negative pressure peristaltic pump

Abstract

The utility model relates to the technical field of peristaltic pumps, specifically a negative pressure peristaltic pump technology, including a housing, a roller, a roller bracket, a hose, a transmission shaft, and a power source; the roller, the roller bracket, and the hose are installed in the housing, the transmission shaft connects the roller bracket and the power source through the housing, the roller is installed at the end of the roller bracket, the roller bracket is driven by the power source through the transmission shaft to drive the roller to rotate and compress the hose to work; the housing is configured as a sealed cavity, a negative pressure port connected to the negative pressure source is provided on the sealed cavity, and the sealed cavity is in a negative pressure state when working. This solution allows the elasticity of the hose to recover extremely quickly under negative pressure conditions, the hose will not be misaligned due to fatigue, and the service life can be extended, and the suction force required by the hose can also be obtained by adjusting the negative pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of peristaltic pumps, in particular to a negative pressure peristaltic pump technology. Background Art

[0002] Peristaltic pumps are already widely used. The biggest problem in their use is that the hose deforms and loses its elasticity during long-term pressure, causing a decrease in flow rate, inaccurate metering, and even leakage. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a negative pressure peristaltic pump technical solution.

[0004] A negative pressure peristaltic pump comprises a shell, a roller, a roller bracket, a hose, a transmission shaft, and a power source. The roller, the roller bracket, and the hose are installed in the shell. The transmission shaft is connected to the roller bracket and the power source through the shell. The roller is installed at the end of the roller bracket. The roller bracket is driven by the power source through the transmission shaft to drive the roller to rotate and compress the hose to work. The shell is configured as a sealed cavity. The sealed cavity is provided with a port connected to the negative pressure source. The sealed cavity is in a negative pressure state when working.

[0005] Furthermore: a pressure regulating valve is arranged on the port connecting the sealed cavity and the negative pressure source.

[0006] Furthermore: a pressure gauge is arranged on the sealed cavity.

[0007] Furthermore, two hose connection seats are arranged on the sealed cavity to connect the hose in the sealed cavity with the delivery pipe outside the sealed cavity.

[0008] Furthermore: the transmission shaft and the housing are closed and connected via a seal.

[0009] Furthermore: the negative pressure in the sealed cavity cannot exceed the negative pressure value that the hose can withstand.

[0010] Furthermore, the roller supports and rollers in the sealing cavity are symmetrically distributed in at least two or more groups.

[0011] Furthermore: the medium in the sealed cavity can be liquid or gas phase.

[0012] Furthermore: the shell is provided with a panel, and the shell panel is provided with an observation hole.

[0013] Beneficial effects: The utility model enables the hose of the peristaltic pump to be used under negative pressure, which has the following beneficial effects:

[0014] 1. The elasticity of the hose recovers very quickly under negative pressure conditions;

[0015] 2. The hose will not lose alignment due to weakness;

[0016] 3. The suction force required by the hose can be obtained by adjusting the negative pressure value;

[0017] 4. The service life of the hose is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0019] In the figure: 100 power source, 101 transmission shaft; 102 sealing element; 200 shell back plate; 201 shell; 202 roller bracket; 203 sealing cavity; 204 roller; 205 hose; 206 shell panel; 207 bolt; 300 negative pressure gauge; 400 port for negative pressure source connection; 401 pressure regulating valve; 500 hose connecting seat; 501 connecting seat sealing nut; 600 hose straight-through; 601 hose straight-through outer end interface; 602 hose straight-through inner end interface; 700 delivery pipe; 800 delivery pipe clamp; 801 hose clamp; 900 observation hole. DETAILED DESCRIPTION

[0020] In order to make the technical solution of the utility model more clear, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0021] If the implementation of the Figure 1 As shown, in this embodiment, the transmission shaft 101 drives the roller bracket 202 to rotate under the drive of the power source 100, and the roller bracket 202 drives the roller 204 to rotate and squeeze the hose 205 to push the material. The hose 205 quickly recovers under the action of elastic tension and negative pressure to attract the material for replenishment, thereby completing the material transportation.

[0022] It should be noted that the above process is completed in the sealed cavity 203 under negative pressure;

[0023] Specifically, the housing back plate 200 is connected to the transmission shaft 101 via a seal 102, the housing 201 is screwed to the housing panel 206 via bolts 207 and is sealed and connected to the hose connection seat 500;

[0024] Specifically, the hose connection seat 500 is threadedly connected to the sealing nut 501, and the sealing nut 501 is threadedly connected to the hose straight-through 600; the hose connection seat 500, the sealing nut 501, and the hose straight-through 600 are symmetrically distributed at both ends of the housing 201; according to the driving direction, when one end is the input end, the other end is the output end;

[0025] Specifically, the hose 205 is connected to the hose straight-through inner end interface 602 and is fastened and sealed by the clamp 801, and the delivery pipe 700 is connected to the hose straight-through outer end interface 601 and is fastened and sealed by the clamp 800;

[0026] Specifically, a negative pressure gauge 300 is provided on the housing panel 206 for reading the negative pressure value in the sealed cavity 203;

[0027] Specifically, the housing panel 206 is provided with a port 400 connected to a negative pressure source, and the port 400 connected to the negative pressure source is provided with a pressure regulating valve 401, which can regulate the pressure within the negative pressure range that the hose 205 can withstand;

[0028] Specifically, an observation hole 900 is provided on the housing panel 206 for observing the operating conditions in the sealed cavity 203;

[0029] Specifically, the medium of the sealed cavity 203 is air.

[0030] In the above description and drawings, the description of the known structures and technologies is omitted, and only the part related to the utility model is shown instead of all. For ordinary technicians in this field, other embodiments can be obtained according to these descriptions and drawings without creative work, which should belong to the scope of the present invention.

Claims

1. A negative pressure peristaltic pump, comprising a housing, a roller, a roller bracket, a hose, a transmission shaft, and a power source, wherein the roller, the roller bracket, and the hose are installed in the housing, the transmission shaft connects the roller bracket and the power source through the housing, the roller is installed at the end of the roller bracket, the roller bracket is driven by the power source through the transmission shaft, thereby driving the roller to rotate and press the hose to work, characterized in that: The shell is configured as a sealed cavity, a port connected to a negative pressure source is provided on the sealed cavity, and the sealed cavity is in a negative pressure state during operation.

2. A negative pressure peristaltic pump according to claim 1, characterized in that: A pressure regulating valve is arranged on the port where the sealed cavity is connected to the negative pressure source.

3. A negative pressure peristaltic pump according to claim 1, characterized in that: A pressure gauge is arranged on the sealed cavity.

4. A negative pressure peristaltic pump according to claim 1, characterized in that: The sealed cavity is provided with two hose connection seats for connecting the hose in the sealed cavity with the delivery pipe outside the sealed cavity.

5. A negative pressure peristaltic pump according to claim 1, characterized in that: The transmission shaft and the housing are closed and connected via a sealing member.

6. A negative pressure peristaltic pump according to claim 1, characterized in that: The negative pressure in the sealed cavity cannot exceed the negative pressure value that the hose can withstand.

7. A negative pressure peristaltic pump according to claim 1, characterized in that: The roller supports and the rollers in the sealed cavity are symmetrically distributed in at least two or more groups.

8. A negative pressure peristaltic pump according to claim 1, characterized in that: The medium in the sealed cavity can be liquid or gas.

9. A negative pressure peristaltic pump according to claim 1, characterized in that: The shell is provided with a panel, and the shell panel is provided with an observation hole.

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